Temat: crop productivity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The impact of maize irrigation intervals and potassium fertiliser rates on mealybug populations, vegetative growth, and resulting yield
Autorzy:: Bakry, Moustafa M.S.
Aljedani, Dalal M.
Powiązania:: https://bibliotekanauki.pl/articles/28411627.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: agronomic practices
crop productivity
maize
mealybug
Phenacoccus solenopsis
potassium fertilization
Opis:: The mealybug, Phenacoccus solenopsis (Hemiptera: Coccomorpha: Pseudococcidae), is one of the main pests attacking maize plants in Egypt. Field trials were carried out in the maize field to assess the influence of irrigation periods and potassium fertiliser rates on the mealybug (P. solenopsis) population estimates, vegetative growth, resulting yield, and its components for the maize cultivar (‘Single-Hybrid 168 Yellow’) in the Luxor Governorate, Egypt. Results revealed that unfertilised plants irrigated every seven days had higher pest population densities than other treatments over the two seasons. The fertilised treatments at 114 kg K2O∙ha -1 that received water every 10 days had the smallest population of P. solenopsis in every season. Data during the two seasons (2021 and 2022) revealed that the maize to which potassium fertiliser was added by 114 kg K2O∙ha -1 and irrigated every 10 days had vegetative growth (plant height, diameter, and number of green leaves per plant), yield and its components (average ear length, ear weight, number of grains per ear, weight of 1000 grains, and grain yield) significantly increased as compared to those of the plants that were irrigated every 7 days and without adding fertiliser. A higher dose of potassium fertiliser reduces the infestation of P. solenopsis but causes an increment of maize vegetative growth. This affects the final yield. This information aids farmers in comprehending the good agronomic techniques of maize plants to decrease the infestation of mealybugs and increase the yield.
Źródło:: Journal of Water and Land Development; 2023, 58; 234--242
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Factors influencing farmers’ awareness and choice of adaptation strategies to climate change by smallholder crop farmers
Autorzy:: Mdoda, Lelethu
Powiązania:: https://bibliotekanauki.pl/articles/1891793.pdf
Data publikacji:: 2020-12-29
Wydawca:: Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:: Climate variability, awareness, crop productivity, adaptation strategies, Binary Model, Libode.
Opis:: Climate variability is a global phenomenon and its effects on agricultural productivity have been experienced by developing countries drastically. Climate differences such as high temperatures, drought and long seasons have led to a loss in food production through crop failure, water stress, and human disease outbreak. Therefore, this paper aims to investigate factors influencing farmers’ awareness and choice of adaptation strategies to climate variability by smallholder crop farmers in Libode, Eastern Cape Province, South Africa. Primary data were purposively collected from 120 smallholder crop farmers. Binary logistic regression was used to estimate factors influencing farmers’ awareness while Multinomial logistic regression was used to estimate the choice of adaptation strategies employed by crop farmers. Results showed that farmers have perceived climate change and have adapted to changing climatic conditions. The empirical results have showed that socio-economic factors such as years spent in school, land size, farm experience, and extension services affect farmers' awareness positively while age has a negative influence. Few farmers have adjusted their farming practices to account for the effects of climate change. Thus, the study identifies crop diversification and agroforestry as being the most promising strategies with benefits for farmers, the environment and future generations. The government should develop policies aimed at providing and enhancing farmers’ knowledge on climate change. Farmers are encouraged to form farm organizations and be active as to serve as a platform to share knowledge on indigenous and technological farming practices for effective climate change adaptation.
Źródło:: Journal of Agribusiness and Rural Development; 2020, 58, 4; 401-413
1899-5241
Pojawia się w:: Journal of Agribusiness and Rural Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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: 4.

Tytuł:: Implications of global warming on changing trends in crop productivity - a review
Autorzy:: Banerjee, S.
Banerjee, P.
Mukhopadhayay, A.
Powiązania:: https://bibliotekanauki.pl/articles/11606.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: global warming
climate change
trend
crop productivity
carbon dioxide
weather parameter
Opis:: Evidence of changes in weather parameters like ambient temperature, precipitation, wind flow, etc., are prominently visible across the world. These changes have been reported to effect global crop yield. This review compiles both direct and indirect effects of climate change on global crop productivity with highlights on existing local and global scenarios. As a conclusion, it may be stated that thorough understanding of agricultural techniques and analysis of global change factors is highly essential for achieving sustainable agricultural yield over the upcoming years.
Źródło:: International Letters of Natural Sciences; 2014, 06
2300-9675
Pojawia się w:: International Letters of Natural Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effects of peat and peat-zeolite substrates on quality, growth indices of cucumber seedlings and crop productivity
Autorzy:: Jankauskienė, J.
Brazaitytė, A.
Kairienė, V.V.
Zalatorius, V.
Powiązania:: https://bibliotekanauki.pl/articles/12315875.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: plant cultivation
cucumber
vegetable
seedling
crop productivity
peat-zeolite substrate
crop quality
growth index
growing medium
Opis:: The objective of this study was to evaluate the peat and zeolite mixtures substrates performance on cucumber seedling quality and crop yield. The research was carried out in a greenhouse covered with double polymeric film at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry. Cucumber seedlings were grown in different substrates: peat, peat + zeolite 1 : 1, peat + zeolite 2 : 1, peat + zeolite 3 : 1 and peat + zeolite 4 : 1. Cucumber seedlings grown in peat and zeolite substrates are shorter; the leaf area is smaller than that of the seedlings grown in peat alone. The dry mass of the aboveground part of these seedlings is lower (insignificant difference), however, the root mass is higher than those grown in peat alone. The addition of zeolite to peat substrate does not have any positive effect on the photosynthesis pigment content in cucumber seedling leaves. The physiological growth indices of the seedlings grown in peat-zeolite substrates were lower compared to those grown in peat. When zeolite is added to peat substrate, net assimilation rate is higher compared to those grown in peat. Higher yields (significant difference) were demonstrated by cucumbers, the seedlings of which had been grown in peat-zeolite substrates.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 161-170
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Satellite ET-based irrigation performance : Strategies to increase rainfed crops production in the lower Baro watershed, Ethiopia
Autorzy:: Befikadu Deneke, Fiseha
Shetty, Amba
Fufa, Fekadu
Powiązania:: https://bibliotekanauki.pl/articles/27312629.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: crop water productivity
evapotranspiration
irrigation performance
lower Baro
yield gap
Opis:: Satellite-based irrigation performance is a valuable tool for improving yields in irrigated areas across the world and requires adequate land for long-term development. This study aimed to increase irrigation performance and yield gap variation of rainfed crops using the database of FAO’s Water Productivity Open Access Portal (WaPOR) and the Global Yield Gap Atlas. The evapotranspiration (ET) performance of irrigation is expressed in equity (CV of ET), reliability, adequacy (CV of ET), and water productivity (kg∙m-3). The rainfed crops are interpreted in terms of metric tonnes/ha. Specifically, 20,325 km2 of suitable pastoral land across eight sub-classes was converted to rainfed rice, sugarcane, maize, and vegetable crops. Results showed that the R2 value was 0.97 at Baro Itang and -0.99 at Sor Metu, with the Baro Gambella sub-catchment having the largest yield gap of 4.435.2, 8.870.4, and 10.080∙106 kg when the yield increased by 1/3, 2/3, and 3/4. On the other hand, Gumero Gore had the smallest yield gap of 10,690, 29,700, and 33,750 kg, respectively. The management regime was 2.87, 0.87, and 0.35 kg∙m-3 for growers in the estate, farmer association, and individual, respectively. The study concludes that no single irrigation technique can be considered the best, and a thorough analysis of spatiotemporal variation of the irrigation performance indicators and the yield gap in the water-scarce lower Baro watershed is required.
Źródło:: Journal of Water and Land Development; 2023, 58; 53--61
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Produktywność uproszczonych zmianowań na glebie lekkiej
Produktivnost uproshhennykh zernovykh sevooborotov na ljogkojj pochve
Productivity of simplifed cereal crop rotations on light soil
Autorzy:: Romek, B.
Powiązania:: https://bibliotekanauki.pl/articles/799258.pdf
Data publikacji:: 1990
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: produkcyjnosc
zmianowanie
plony
gleba lekka
productivity
crop rotation
yield
light soil
Opis:: В 1973 - 1984 гг. был проведен опыт с целью определения возможности упрощения севооборотов на лёгкой почве. На основании полученных результатов установлено, что при применении упрощенной зернопропашной модели севооборота (картофель - рожь - рожь - рожь) можно получить в среднем близкие традиционному севообороту (картофель рожь - смесь зернобобовых растений - рожь) производительности зерно вых единиц/га. Для зернокормового севооборота и зерновой монокульту ры были получены в среднем на около 18 и 10% более низкие производственные эффекты по сравнению с традиционным севооборотом. Повышение доли ржи в севообороте с 50 до 75% привело к снижению среднего урожая на 43% в среднем для ротации культур в севообороте.
The respective experiments on the possibility of simplification of the crop rotations on a sandy soil were carried out in 1973 - 1984. The results obtained prove that the cereal - root crop rotation model (potatoe - rye - rye - rye) allowed to obtain an average yield of grain units similar to that in a traditional crop rotation (potatoe - rye - mixture of leguminous plants - rye). In the cereal-fodder crop rotation (mixture of leguminous plants - rye - rye - rye) and the cereal monoculture (oats - rye - rye - rye) the productivity were by about 18 and 10% lower compared to traditional crop rotation. Increase of winter rye in the crop rotation from 50 up to 75% caused a decrease of its average yield in the rotation by about 13%.
Źródło:: Zeszyty Problemowe Postępów Nauk Rolniczych; 1990, 376
0084-5477
Pojawia się w:: Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Irrigation and fertigation scheduling under drip irrigation for maize crop in sandy soil
Autorzy:: Ibrahim, M.M.
El-Baroudy, A.A.
Taha, A.M.
Powiązania:: https://bibliotekanauki.pl/articles/26207.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: irrigation
fertigation
drip irrigation
maize
yield
water productivity
crop
sandy soil
field experiment
Źródło:: International Agrophysics; 2016, 30, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Simulation of climate change impacts on grain sorghum production grown under free air CO2 enrichment
Autorzy:: Fu, T.
Ko, J.
Wall, G.W.
Pinter,Jr., P.J.
Kimball, B.A.
Ottman, M.J.
Kim, H.-Y.
Powiązania:: https://bibliotekanauki.pl/articles/26201.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: crop simulation
climate change
grain yield
sorghum
Sorghum bicolor
productivity
plant production
carbon dioxide
Źródło:: International Agrophysics; 2016, 30, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Produkcyjne i środowiskowe skutki różnych systemów gospodarowania
Productive and environmental consequences of different crop production systems
Autorzy:: Jończyk, K.
Kuś, J.
Stalenga, J.
Powiązania:: https://bibliotekanauki.pl/articles/238977.pdf
Data publikacji:: 2007
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: system gospodarowania
produkcyjność
ochrona środowiska
crop production system
environment protection
technology of field production
productivity
Opis:: Omówiono wyniki badań uzyskanych w latach 1997-2006 w Stacji Doświadczalnej IUNG-PIB w Osinach. Badania prowadzono w obiekcie doświadczalnym umożliwiającym w jednakowych warunkach siedliskowych porównywanie różnych systemów gospodarowania. Poddano analizie produkcyjność roślin oraz całych zmianowań w systemach: ekologicznym, konwencjonalnym intensywnym, integrowanym i monokulturze. Ocenę oddziaływań środowiskowych wykonano na podstawie analizy: zasobności gleby w składniki pokarmowe, bilansu azotu, zawartości azotu mineralnego w glebie i przesączach glebowych. Celem pracy była ocena skutków produkcyjnych i środowiskowych systemów gospodarowania różniących się poziomem intensywności organizacji i stosowanych technologii. Największą wydajność zmianowania stwierdzono w systemie integrowanym 61 j.zb., odpowiednio mniejszą w systemach: ekologicznym 60 j.zb., konwencjonalnym 57 j.zb. i monokulturze 47 j.zb. System ekologiczny, w porównaniu z pozostałymi sposobami gospodarowania, charakteryzował się najkorzystniejszymi wskaźnikami oceny środowiskowej: saldem bilansu N, koncentracją azotu mineralnego w glebie i przesączach glebowych, wymywaniem azotu.
Paper discussed the results of research conducted within 1997-2006 at Osiny Experimental Station, on an experimental object where different crop production systems were compared under similar habitat conditions. The study evaluated productivity of particular crops and the whole crop rotations in organic, conventional and integrated systems and in monoculture of winter wheat, as well as the environmental effects of these systems. Environmental part of the research included evaluation of soil fertility, nitrogen balance, mineral N concentration in soil and soil filtrates. Integrated and organic systems were characterized by the most productive crop rotations. Productivity of these systems amounted to 61 and 60 cereal units, respectively, whereas the productivity of monoculture was the lowest (47 cereal units). Nitrogen balance, mineral N concentration in soil and in soil filtrates appeared to be most environment friendly in the organic system.
Źródło:: Problemy Inżynierii Rolniczej; 2007, R. 15, nr 1 cz.2, 1 cz.2; 13-22
1231-0093
Pojawia się w:: Problemy Inżynierii Rolniczej
Dostawca treści:: Biblioteka Nauki

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