Temat: wheat crop - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Land Suitability Assessment for Wheat Production Using Analytical Hierarchy Process and Parametric Method in Babylon Province
Autorzy:: Mohammed, Rafal J.
Suliman, Abdulhalim A.
Powiązania:: https://bibliotekanauki.pl/articles/27323842.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: land evolution
soil salinity
wheat
soil properties
crop variety
Opis:: This study was carried out to show the extent to which the land is productive due to the effect that climatic changes and the increase in population growth are the reasons that led to an increase in the demand for food, especially in developing countries. Therefore, a scientific way must assess the land suitability for growing crops. This research aimed to provide an integrated approach to the process of analyzing the suitability of agricultural lands for crop growth. Wheat in the Nile region of Babylon Governorate, was studied using the analytical hierarchy model (AHP) and compared with the parametric method and the actual crop in the field, as twelve soil criteria were determined (electrical conductivity, soil interaction, cation exchange capacity, exchangeable sodium ratio, soil texture, lime, gypsum, organic carbon, drainage, soil depth, slope, flooding) and three criteria were added in the AHP method due to their importance in Iraqi soils, which are (total nitrogen, availability phosphorus, crop variety). The results were extracted and showed that all the results of the study using the parametric method within the very unsuitable class for cultivation, N2, 72.5%, with an area of 37,734.07 hectares, and the unsuitable class, N1, 27.5%, with an area of 14,312.92 hectares, either by using the method. According to the analytical hierarchy process and giving varying importance to the soil criteria above, it was found that 37.5% are very suitable S1 with an area of 19517.62 hectares, 42.5% suitable for agriculture S2 with an area of 22119.97 hectares, and 20% moderately suitable S3 with an area of 10409.4 hectares. These results were similar to the agricultural reality of the regions under study.
Źródło:: Journal of Ecological Engineering; 2023, 24, 7; 75--87
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Deficit irrigation under water stress and salinity conditions: fao-aquacrop model
Autorzy:: Kale Celik, Sema
Powiązania:: https://bibliotekanauki.pl/articles/2131647.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:: aquacrop
crop yield
deficit irrigation
salinity
wheat
Opis:: In this research, estimation potential of Aquacrop model under deficit irrigation and salinity conditions were evaluated for winter wheat grown under arid and semi-arid climates. Five different irrigation strategies and irrigation water salinity levels (0.5, 5, 7.5, 10, 15 dS m-1 ) were taken with the model to estimate deficit irrigation and salinity scenarios. Wheat grain yield, biomass production and canopy cover were simulated under deficit and salinity stresses. According to estimation of the model; the deficit irrigation with water reduction of more than 75 % of full irrigation was applied at growth stages of wheat, revealed the significant reduction in grain yield, biomass and canopy cover as compared with full irrigation practice. The increase in irrigation water salinity caused a significant decrease in grain yield and biomass value. It was compared to the 0.5 dS m-1 salinity level, a low value of 3% was obtained for the 5 dS m-1 salinity level. Yield loss of 7.5, 10 and 15 dS m-1 salinity levels were found to be 18.97%, 42.5% and 85.6% respectively. Also, increasing irrigation water depth in saline treatments resulted in increased grain and biomass yield. For sustainable water management in agriculture area, using simulation model such as Aquacrop is useful tolls to estimate effect of applied water depth and quality of irrigation water on crop yield.
Źródło:: Infrastruktura i Ekologia Terenów Wiejskich; 2022, nr I/1; 96-106
1732-5587
Pojawia się w:: Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Drivers of Cereal Production Efficiency Improvement in Kazakhstan – the Case of the Kostanay Region
Autorzy:: Uteulin, Valentin
Zhientaev, Sansyzbay
Powiązania:: https://bibliotekanauki.pl/articles/2202149.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: cereal production
food security
crop yield
food insecurity
cereal crop
wheat
Opis:: The COVID-19 outbreak has seriously affected the global food security at a time when it was significantly compromised by the effects of climate change and armed conflicts. The impact of the pandemic and quarantine restrictions imposed in response to the deadly virus brought humanity face-to-face with a new threat – that of food insecurity – which contributed to a high social demand for state-of-the-art methods of improving the cereal production efficiency. The aim of the study is to develop and implement a methodological approach to enhancing the cereal production efficiency. The methodology of the study relies on time series that made it possible to determine the main trends in regional cereal production and make projections. Application of the suggested approach in the Kostanay region revealed that this region was among the key cereal producers in the country. In 2019, the region was affected by extreme weather, which caused a sharp decline in cereal production. The present study, however, projects large opportunities for cereal production growth in the region and a significant increase in cereal production in the future. In addition, the paper suggests the following action plan to improve efficiency of the cereal production sector in the Kostanay region: streamlining of state support arrangements for cereal producers; development of affordable crop insurance products; systemic steps to increase cereal yields; development of logistic infrastructure; comprehensive monitoring of cereal production to develop a system of rapid response to changes in the external environment.
Źródło:: Journal of Ecological Engineering; 2022, 23, 10; 1--10
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Środowiskowe i produkcyjne skutki przyorywania słomy – wyniki wieloletniego doświadczenia polowego
Environmental and production effects of straw incorporation – results of a long-term field experiment
Autorzy:: Smagacz, Janusz
Kopiński, Jerzy
Martyniuk, Stefan
Powiązania:: https://bibliotekanauki.pl/articles/2216495.pdf
Data publikacji:: 2022-11-04
Wydawca:: Centrum Doradztwa Rolniczego w Brwinowie. Oddział w Poznaniu
Tematy:: słoma
przyorywanie
próchnica
zmianowanie roślin
pszenica ozima
pszenżyto ozime
rzepak
plony
właściwości gleby
straw
incorporation
soil organic matter
crop rotation
winter wheat
winter triticale
rape
yields
soil properties
Opis:: Celem badań przedstawionych w niniejszym opracowaniu było poznanie długofalowych skutków środowiskowych i produkcyjnych różnej częstotliwości przyorywania słomy w zmianowaniu ozimin: rzepak-pszenica-pszenżyto. W wyniku wieloletniego (21 lat) nieprzyorywania słomy żadnej z roślin uprawianych w wymienionym zmianowaniu, zawartość w glebie próchnicy spadła z początkowej wartości 14,6 g∙kg-1 s.m. do 14,4 g∙kg1s.m. gleby, natomiast przyorywanie słomy jednej rośliny w zmianowaniu, czyli rzepaku, spowodowało zwiększenie zawartości próchnicy w badanej glebie do 15,0 g∙kg-1 s.m. gleby. Pozostawianie i przyorywanie słomy dwóch roślin w zmianowaniu, tj. rzepaku i pszenicy, przyczyniło się do jeszcze większego wzbogacenia gleby w próchnicę, a przyorywanie słomy wszystkich 3 gatunków roślin skutkowało największym przyrostem zawartości (do 16,2 g∙kg-1 s.m.) tego składnika w glebie. W przeprowadzonych badaniach nie stosowano wapnowania gleby i w efekcie jej odczyn we wszystkich obiektach doświadczalnych obniżył się z początkowej wartości pH 6,2 do pH 5,0 - 5,1, najprawdopodobniej na skutek wieloletniego stosowania nawozów mineralnych, a zwłaszcza stosunkowo wysokich dawek N pod rzepak. W porównaniu do wartości wyjściowych, zawartość przyswajalnego potasu (K2O) w glebie zwiększyła się, natomiast zmniejszyła się zawartość przyswajalnego fosforu (P2O5) i magnezu (Mg), zapewne w wyniku obniżenia się odczynu gleby. W omawianym doświadczeniu stosowanie słomy nie dało wyraźnych efektów nawozowych w postaci istotnych przyrostów plonów (w stosunku do obiektu bez słomy) ziarna badanych zbóż, tylko w przypadku rzepaku stwierdzono lepsze plonowanie tej rośliny wraz ze wzrostem częstotliwości przyorywania słomy w zmianowaniu. Uzyskane wyniki wskazują, że w trosce o dobry stan gleb, rolnicy prowadzący gospodarstwa bezinwentarzowe i stosujący uproszczone płodozmiany zbożowe, powinni przyorywać słomę co najmniej jednej rośliny, a najlepiej dwóch, bowiem prowadzi to do nagromadzania się w glebie próchnicy, która ma duży wpływ na biologiczne, chemiczne i fizyczne właściwości gleb.
The aim of this study was to analyze long-term environmental and production effects of the frequency of straw incorporation into the soil in the rotation of winter crops: rape-wheat-triticale. After 21 years of crop rotation with straw removal the SOM level in the soil decreased to 14.4 g∙kg-1 soil DM, compared to that in 1997 (14.6 g∙kg-1). However, when straw of one crop (rape) per rotation was incorporated the content of SOM increased to 15.0 g∙kg-1 soil DM, and to 15.6 and 16.0 g∙kg-1 when straw of two and three crops, respectively, was ploughed in. Straw retention had also a beneficial effect on the content of labile fractions of SOM (hot water extractable C and N). In this study no soil liming was applied which resulted in soil pH decrease from the initial pH 6.2 to pH 5.0-5.1 at the end of the experiment. In comparison to the initial values, the soil contained more available K2O and lower amounts of P2O5 and Mg, probably due to soil acidification. Grain yields and yield components of wheat and triticale were not significantly affected by straw incorporation, but in the case of rape seed yields increased with more frequent straw incorporation. The presented results indicate, that farmers practicing non-livestock farming or simplified cereal rotations in the care of soil quality should retain on the field and plough in straw of at least one crop, or preferably two crops per rotation, as it results in the accumulation soil organic matter and thus in the improvement of biological, chemical and physical soil properties.
Źródło:: Zagadnienia Doradztwa Rolniczego; 2022, 108, 2; 32-43
1232-3578
2719-8901
Pojawia się w:: Zagadnienia Doradztwa Rolniczego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Detection of barley- and wheat-specific forms of Wheat dwarf virus in their vector Psammotettix alienus by duplex PCR assay
Autorzy:: Trzmiel, K.
Klejdysz, T.
Powiązania:: https://bibliotekanauki.pl/articles/66781.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wheat dwarf virus
virus
cereal crop
detection
barley
Psammotettix alienus
Hemiptera
Auchenorrhyncha
Cicadellidae
leafhopper
duplex polymerase chain reaction
Opis:: Wheat dwarf virus (WDV) has been one of the most common viruses on cereal crops in Poland in the last years. This single stranded DNA virus is transmitted by the leafhopper spec, Psammotettix alienus (Dahlb.) in a persistent manner. It induces yellowing and streaking of leaves, dwarfing or even death of infected plants. The presence of barley- and wheat-specific forms of WDV (WDV-B and WDV-W) and their vector were previously reported in the country, however the literature data did not include any information on the infectivity of the vector in Poland. A duplex polymerase chain reaction (PCR) procedure was developed and optimized for simultaneous detection and differentiation of both forms in the vector. Two sets of primers amplify 734 bp and 483 bp specific fragments for WDV-W and WDV-B, respectively. The results were verified by a sequencing method. The studies were carried out on insect samples collected in autumn from four different locations in Greater Poland. The results confirmed the presence of WDV-W in the tested samples. They also suggested the concomitant of both forms of the virus in the vector. Additional studies to determine virus-vector relationships should be undertaken.
Źródło:: Journal of Plant Protection Research; 2018, 58, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Plant parasitic nematodes in the soil and roots of winter wheat grown in crop rotation and long-term monoculture
Autorzy:: Zaton, K.K.
Skwiercz, A.T.
Adamiak, E.
Szelagowska, P.
Hury, G.
Powiązania:: https://bibliotekanauki.pl/articles/66002.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: plant parasite
parasitic nematode
nematode
pathogenic fungi
cereal virus
soil
root
wheat
winter wheat
crop rotation
long-term monoculture
Opis:: The species structure of plant parasitic nematode populations from the rhizosphere of winter wheat grown with crop rotation or in 48-year-old monoculture was analyzed and compared. Dominating species: Bitylenchus dubius, Merlinius microdorus, Paratylenchus neglectus and Heterodera avenae, in monoculture plots, had higher populations than in crop rotation plots. Heterodera avenae eggs and larvae were infected by pathogenic fungi in 68% of the monoculture crops (vs. 65–66% of the cysts from crop rotation), 12–20% of Paratylenchus sp. specimens were colonized by bacteria, mainly by Bacillus penetrans. This study shows nematological changes occurring in long-term wheat breeding, thus providing additional information necessary to fight dangerous viral vectors of the examined cereal.
Źródło:: Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Quantitative evaluation of Fusarium species and crop quality traits in wheat varieties of northeastern Poland
Autorzy:: Iwaniuk, P.
Konecki, R.
Snarska, K.
Lozowicka, B.
Powiązania:: https://bibliotekanauki.pl/articles/66000.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: quantitative evaluation
Fusarium
fungi
filamentous fungi
crop quality
quantitative detection
wheat
plant cultivar
Polska
Opis:: This research was conducted to investigate the natural, quantitative composition of the most common Fusarium species directly in fields of northeastern Poland. The concentration of Fusarium spp. and grain quality traits (yield, 1,000 kernel weight, test weight, grain moisture, ergosterol content, protein content, gluten content and starch content) were compared in four wheat varieties (Mandaryna, Struna, Kandela and Arabella). Obtained results indicated a relation between grain moisture, test weight, ergosterol content, yield and fungi concentration. Protein, starch and gluten content was similar in all wheat varieties. Fusarium culmorum was the most common pathogen in Mandaryna and Struna and F. graminearum in Kandela and Arabella. Fusarium avenaceum and F. poae occurred in low amounts in all wheat varieties except Mandaryna. Fusarium oxysporum was found in comparable concentrations in Struna, Kandela and Arabella. Struna despite medium Fusarium spp. colonization possessed the most desirable grain quality compared to other varieties. We carried out real-time PCR detection of Fusarium spp. which is an efficient, cost effective and time saving method in evaluating the development of fungal diseases which are not visible in standard observations.
Źródło:: Journal of Plant Protection Research; 2018, 58, 4
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Effect of tillage practices on least limiting water range in Northwest India
Autorzy:: S. Kahlon, Meharban
Chawla, Karitika
Powiązania:: https://bibliotekanauki.pl/articles/973173.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: least limiting water range
tillage
maize
wheat
soil moisture
crop productivity
Opis:: Tillage practices affect mechanical and hydrological characteristics of soil and subsequently the least limiting water range. This quality indicator under the wheat-maize system of northwest India has not been studied yet. The treatments included four tillage modes, namely conventional tillage, no-tillage without residue, no-tillage with residue, and deep tillage as well as three irrigation regimes based on the irrigation water and pan evaporation ratio i.e. 1.2, 0.9, and 0.6. The experiment was conducted in a split plot design with three replications. At the end of cropping system, the mean least limiting water range (m3 m-3) was found to be highest in deep tillage (0.26) and lowest in no- tillage without residue (0.15). The field capacity was a limiting factor for the upper range of the least limiting water range beyond soil bulk density 1.41 Mg m-3 and after that 10% air filled porosity played a major role. However, for the lower range, the permanent wilting point was a critical factor beyond soil bulk density 1.50 Mg m-3 and thereafter, the penetration resistance at 2 MPa becomes a limiting factor. Thus, deep tillage under compaction and no-tillage with residue under water stress is appropriate practice for achieving maximum crop and water productivity.
Źródło:: International Agrophysics; 2017, 31, 2; 183-194
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Evaluation of the diversity of invertebrates assemblages in spring wheat cultivated in different crop production systems
Ocena różnorodności zgrupowań bezkręgowców w pszenicy jarej uprawianej w różnych systemach produkcji roślinnej
Autorzy:: Radzikowski, P.
Stalenga, J.
Feledyn-Szewczyk, B.
Powiązania:: https://bibliotekanauki.pl/articles/335346.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:: invertebrates
ecosystem services
spring wheat
crop production system
bezkręgowce
usługi ekosystemowe
pszenica jara
systemy produkcji roślinnej
Opis:: The aim of the study was to evaluate the diversity of invertebrate groups in spring wheat cultivated in different crop production systems. The field experiment was established in 1994 in experimental plot at Agricultural Experimental Station of IUNG-PIB Kępa in Osiny. The research was conducted in 2014-2016 on spring wheat fields in organic, conventional and integrated systems. At designated points in each year of research, biological material was collected, using two methods: sweep net and pitfall traps. The number of invertebrates in each order was determined and compared, as well as the variety of orders. Simpson's diversity index and Shannon-Wiener's index were used to assess their diversity. In spring wheat, about two times more spiders and pollinating insects were found in organic system than in conventional and integrated systems. Beetles (Coleoptera) were the dominant group of invertebrates in spring wheat in all crop production systems. The highest values of the Simpson and Shannon-Wiener’s diversity indexes calculated for invertebrate orders were recorded in the organic system, while the smallest in the integrated system.
Celem prowadzonych badań była ocena różnorodności zgrupowań bezkręgowców w pszenicy jarej uprawianej w różnych systemach produkcji roślinnej. Do przeprowadzenia badań wykorzystano doświadczenie polowe założone w 1994 r. w RZD IUNG-PIB Kępa w Osinach. Badania prowadzono w latach 2014-2016 na polach pszenicy jarej w systemie ekologicznym, konwencjonalnym oraz integrowanym. W wyznaczonych punktach w każdym roku badań zbierano materiał biologiczny czerpakiem entomologicznym oraz metodą pułapek ziemnych. Określono i porównano liczebność osobników bezkręgowców w poszczególnych rzędach, a także różnorodność rzędów. Do oceny wykorzystano wskaźnik różnorodności Simpsona oraz wskaźnik Shannona-Wienera. W pszenicy jarej uprawianej ekologicznie stwierdzono około dwa razy więcej pająków i owadów zapylających niż w systemach konwencjonalnym i integrowanym. Dominującą grupą organizmów bezkręgowych w pszenicy jarej we wszystkich systemach produkcji roślinnej były chrząszcze (Coleoptera). Najwyższe wartości wskaźników różnorodności Simpsona oraz Shannona-Wienera wyliczone dla rzędów bezkręgowców odnotowano w systemie ekologicznym, natomiast najmniejsze w systemie integrowanym.
Źródło:: Journal of Research and Applications in Agricultural Engineering; 2017, 62, 4; 107-113
1642-686X
2719-423X
Pojawia się w:: Journal of Research and Applications in Agricultural Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Wheat water use and yield under different salinity of irrigation water
Zużycie wody i plon pszenicy w warunkach różnego zasolenia wody stosowanej do nawodnień
Autorzy:: Abedinpour, M.
Powiązania:: https://bibliotekanauki.pl/articles/292283.pdf
Data publikacji:: 2017
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: crop coefficient
saline water
stress
wheat crop
stres
uprawa pszenicy
woda słona
współczynnik roślinny
Opis:: A field experiment was conducted for determination of crop coefficient (KC) and water stress coefficient (Ks) for wheat crop under different salinity levels, during 2015–2016. Complete randomized block design of five treatments were considered, i.e., 0.51 dS∙m^–1 (fresh water, FW) as a control treatment and other four saline water treatments (4, 6, 8 and 10 dS∙m^–1), for S₁, S₂, S₃ and S₄ with three replications. The results revealed that the water consumed by plants during the different crop growth stages follows the order of FW > S₁ > S₂ > S₃ > S₄ salinity levels. According to the obtained results, the calculated values of KC significantly differed from values released by FAO paper No 56 for the crops. The Ks values clearly differ from one stage to another because the salt accumulation in the root zone causes to reduction of total soil water potential (Ψ_t), therefore, the average values of water stress coefficient (Ks) follows this order; FW(1.0) = S₁(1.0) > S₂(1.0) > S₃(0.93) > S₄(0.82). Precise data of crop coefficient, which is required for regional scale irrigation management is lacking in developing countries. Thus, the estimated values of crop coefficient under different variables are essential to achieve the best management practice (BMP) in agriculture.
W latach 2015–2016 przeprowadzono polowy eksperyment w celu określenia współczynnika roślinnego (KC) i współczynnika stresu (Ks) dla pszenicy nawadnianej wodą o różnym zasoleniu. Eksperyment przeprowadzono metodą bloków losowych w pięciu wariantach zasolenia: 0,51 dS∙m^–1 (woda słodka FW jako kontrola) oraz 4, 6, 8 i 10 dS∙m^–1 odpowiednio dla wariantów S₁, S₂, S₃ i S₄, każdy w trzech powtórzeniach. Wyniki wskazują, że woda pobierana przez rośliny w różnych stadiach ich rozwoju układała się w malejącym porządku zasolenia FW > S₁ > S₂ > S₃ > S₄. Obliczone wartości współczynnika KC różniły się istotnie od wartości podanych dla upraw w biuletynie FAO nr 56. Wartości Ks różniły się znacząco między poszczególnymi stadiami, ponieważ kumulacja soli w strefie korzeniowej ograniczyła całkowity potencjał wody glebowej (Ψ_t). Z tego powodu średnie wartości współczynnika stresu (Ks) malały w porządku FW(1,0) = S₁(1,0) > S₂(1,0) > S₃(0,93) > S₄(0,82). W krajach rozwijających się brakuje dokładnych danych o współczynniku roślinnym, które są niezbędne w regionalnym zarządzaniu wodą do nawodnień. Dlatego wartości współczynnika oznaczone w różnych wariantach zasolenia są istotne dla osiągnięcia najlepszych praktyk w gospodarce rolnej.
Źródło:: Journal of Water and Land Development; 2017, 33; 3-9
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Nitrogen content and uptake by spring wheat and undersown Persian clover depending on plant density
Autorzy:: Wanic, M.
Mysliwiec, M.
Orzech, K.
Michalska, M.
Powiązania:: https://bibliotekanauki.pl/articles/1189783.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: nitrogen content
nitrogen uptake
wheat
spring wheat
undersowing
Persian clover
plant density
cover crop
Opis:: In 2010-2012, a pot experiment was conducted in order to assess the impact of a sowing method and density of spring wheat and Persian clover on their uptake and content of nitrogen in different parts of the plants. The plants were grown in the following variants: a mixture, pure sowing, higher density (recommended in agricultural practice) and density reduced by 20%. Observations were performed in the following wheat development growth stages (BBCH): leaf development (12-14), tillering (21-23), stem elongation (31-32), inflorescence emergence (54-56) and ripening (87-89). The experiment included determinations of dry matter in different parts of plants (aerial organs, roots) and of the nitrogen content in dry matter. Based on the results, the total nitrogen content was determined in both species. The data were also used to calculate nitrogen translocation from the wheat vegetative mass to grain, and to calculate selected competition indicators. It was demonstrated that - regardless of the density of plants - the nitrogen uptake by spring wheat and Persian clover in the mixed sowing was lower than in the pure sowing treatment. Mixed sowing caused a more limited nitrogen uptake by the aerial parts of both species than by their roots. No impact was demonstrated of the plant density on the nitrogen uptake by different parts of spring wheat. Persian clover in pots with the lower sowing density absorbed less nitrogen than in pots with the recommended density. Nitrogen translocation from the vegetative parts to the grain of spring wheat between the inflorescence emergence and ripening stages was more effective in the mixture than in the pure sown plants. In mixed sowing, after nitrogen uptake, wheat proved to be a stronger competitor than Persian clover during the whole plant growing period.
Źródło:: Journal of Elementology; 2016, 21, 1; 231-246
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Nitrogen content and uptake by spring wheat and undersown Persian clover depending on plant density
Autorzy:: Wanic, M.
Mysliwiec, M.
Orzech, K.
Michalska, M.
Powiązania:: https://bibliotekanauki.pl/articles/14801.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: nitrogen content
nitrogen uptake
wheat
spring wheat
undersowing
Persian clover
plant density
cover crop
Opis:: In 2010-2012, a pot experiment was conducted in order to assess the impact of a sowing method and density of spring wheat and Persian clover on their uptake and content of nitrogen in different parts of the plants. The plants were grown in the following variants: a mixture, pure sowing, higher density (recommended in agricultural practice) and density reduced by 20%. Observations were performed in the following wheat development growth stages (BBCH): leaf development (12-14), tillering (21-23), stem elongation (31-32), inflorescence emergence (54-56) and ripening (87-89). The experiment included determinations of dry matter in different parts of plants (aerial organs, roots) and of the nitrogen content in dry matter. Based on the results, the total nitrogen content was determined in both species. The data were also used to calculate nitrogen translocation from the wheat vegetative mass to grain, and to calculate selected competition indicators. It was demonstrated that - regardless of the density of plants - the nitrogen uptake by spring wheat and Persian clover in the mixed sowing was lower than in the pure sowing treatment. Mixed sowing caused a more limited nitrogen uptake by the aerial parts of both species than by their roots. No impact was demonstrated of the plant density on the nitrogen uptake by different parts of spring wheat. Persian clover in pots with the lower sowing density absorbed less nitrogen than in pots with the recommended density. Nitrogen translocation from the vegetative parts to the grain of spring wheat between the inflorescence emergence and ripening stages was more effective in the mixture than in the pure sown plants. In mixed sowing, after nitrogen uptake, wheat proved to be a stronger competitor than Persian clover during the whole plant growing period.
Źródło:: Journal of Elementology; 2016, 21, 1
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Response of Winter wheat cultivars to the environment and crop management in post-registration multi-environment trials (PDO)
Reakcja odmian pszenicy ozimej na środowisko i technologię uprawy na przykładzie Porejestrowego Doświadczalnictwa Odmianowego (PDO)
Autorzy:: Derejko, Adriana
Powiązania:: https://bibliotekanauki.pl/articles/460859.pdf
Data publikacji:: 2016-06
Wydawca:: Mazowieckie Biuro Planowania Regionalnego w Warszawie
Tematy:: statistical methods
cultivar x location interaction
cultivar x crop management intensities interaction
environment x crop management interaction
grain yield winter wheat
Post-Registration Variety Testing System (PDO)
COBORU
metody statystyczne
odmiana x lokalizacja interakcji
odmiana x zarządzanie uprawami o intensywnej interakcji
środowisko x zarządzanie interakcją upraw
odmiany pszenicy ozimej
Porejestrowe Doświadczalnictwo Odmianowe (PDO)
Opis:: In many works in the fields of agronomy, agriculture and biology, there is a need to study the impact of cultivar (genotype), agricultural technology (crop management intensities levels), and the locations (agro-ecostems or environment) on the yield of plants. Such studies in Poland allow PDOiR experiments. To be properly carried out the analysis of this data must be based on statistical methods based on the assumed purpose. Some studies examine the impact of the Locations on crop varieties and then examine the effect of GL (GxL) interaction (genotype x location). In other studies, the researchers want to know the impact of agricultural technology on crop varieties, eg. in only one location. In this situation we have to deal with the classification of cultivar x crop managements There are also studies conducted to examine the impact of both the Agro-ecostyems and agricultural technology. Many authors have compared the yield of old and modern cultivars in various locations or in different crop management intensity levels (Broncourt-Hulmel et al. 2003, Derejko et al. 2011, Mądry et al. 2011, 2012). In this case we are dealing with the classification of cultivar x crop managements x location. An example of such statistical analysis adjusted for 3-way classification data from “Post-Registration Variety Testing System (in Polish: Porejestrowe Doświadczalnictwo Odmianowe i Rolnicze – acronym: PDOiR)” experiments for grain yield of winter wheat has been presented in this work. However, this is not strictly statistical work. It is the thesis resulting from a series of field experiments in Poland, the benefits of this experiments and how useful it may be appropriately modifications statistical methods for inference from this data on grain yield of winter wheat (Triticum aestivum L). Few researches have been made to date on the development and adaptation of the currently used methods or development of new primarily by the complexity of the purposes of inference (Derejko et al. 2011). The problem is also insufficient knowledge and application, resulting in rather modest achievements by foreign scientists regarding the methodology. discussed In this thesis we have data from multi-factor series of experiments, planned in the split –block design and repeated both in one growing season and over time, is the publication of McIntosh 1983).
Praca ma charakter informacyjny dotyczący prowadzonej działalności, doświadczeń oraz wpływu na rozwój polskiego rolnictwa Porejestrowego Doświadczalnictwa Odmianowego (PDO). System ten pod względem metodycznym oraz merytorycznym koordynowany jest przez Centralny Ośrodek Badań Roślin Uprawnych (COBORU) z siedzibą w Słupii Wielkiej. W pracy przedstawione zostały główne zadania PDO oraz na czym polegają doświadczenia polowe prowadzone w ramach tego systemu. W celu zobrazowania metodyki statystycznej wykorzystywanej do analizy danych z PDO, został przedstawiony przykład doświadczenia z 28 odmianami pszenicy ozimej z serii L realizowanych w 8 stacjach badawczych (miejscowościach testowych) przy dwóch intensywnościach technologii uprawy. Analiza statystyczna obejmuje trójczynnikową analizę wariancji wykonaną w celu wykrycia wpływu efektów głównych i interakcyjnych na plon pszenicy ozimej. Dodatkowo została zastosowana wizualizacja graficzna w celu prostszej i efektywniejszej analizy otrzymanych wyników.
Źródło:: MAZOWSZE Studia Regionalne; 2016, 18; 181-196
1689-4774
Pojawia się w:: MAZOWSZE Studia Regionalne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Opredelenie korreljacionnojj svjazi mezhdu otdel'nymi geometricheskimi parametrami zeren razlichnykh kul'tur
Determination of correlation relationship between individual geometrical parameters of grains of different cultures
Autorzy:: Kuzminskijj, R.
Sokolovskijj, O.
Sheremeta, R.
Powiązania:: https://bibliotekanauki.pl/articles/77786.pdf
Data publikacji:: 2015
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: grain crop
wheat
rye
geometrical parameter
random variable
correlation analysis
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 4
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Effect of organic inputs on strength and stability of soil aggregates under rice-wheat rotation
Autorzy:: Das, B.
Chakraborty, D.
Singh, V.K.
Aggarwal, P.
Singh, R.
Dwivedi, B.S.
Powiązania:: https://bibliotekanauki.pl/articles/25472.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: tensile strength
stability
soil aggregate
rice
wheat
cereal crop rotation
Opis:: The study aims to elucidate the impact of organic inputs on strength and structural stability of aggregates in a sandy loam soil. Tensile strength, friability and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm), small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+clay size (<0.053) aggregates were evaluated in soils from a long-term experiment with rice-wheat rotation at Modipuram, India, with different sources and amounts of organic C inputs as partial substitution of N fertilizer. Addition of organic substrates significantly improved soil organic C contents, but the type and source of inputs had different impacts. Tensile strength of aggregates decreased and friability increased through organic inputs, with a maximum effect under green gram residue (rice)-farmyard manure (wheat) substitution. Higher macroaggregates in the crop residue- and farmyard manure-treated soils resulted in a higher aggregate mean weight diameter, which also had higher soil organic C contents. The bulk soil organic C had a strong relation with the mean weight diameter of aggregates, but the soil organic C content in all aggregate fractions was not necessarily effective for aggregate stability. The soil organic C content in large macroaggregates (2-8 mm) had a significant positive effect on aggregate stability, although a reverse effect was observed for aggregates <0.25 mm. Partial substitution of nitrogen by organic substrates improved aggregate properties and the soil organic C content in bulk soil and aggregate fractions, although the relative effect varied with the source and amount of the organic inputs.
Źródło:: International Agrophysics; 2014, 28, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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