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Wyświetlanie 1-5 z 5
Tytuł:
The effect of mineral fertilization on fungi colonizing potato (Solanum tuberosum L.) tubers after harvest and after storage
Wpływ nawożenia mineralnego na grzyby zasiedlające bulwy ziemniaka (Solanum tuberosum L.) po zbiorze i po okresie przechowywania
Autorzy:
Cwalina-Ambroziak, B.
Bogucka, B.
Powiązania:
https://bibliotekanauki.pl/articles/27689.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
mineral fertilization
fungi
colonization
potato
Solanum tuberosum
tuber
harvest
storage
foliar fertilization
Opis:
The paper presents the results of a three-year exact experiment conducted in Bałcyny, in which a late potato cultivar, Jasia, was grown. The objective of the study was to determine the effect of different levels of mineral fertilization: A (N 80 kg ha-1 P 80 kg ha-1 K120 kg ha-1) and B (N 120 kg ha-1 P 144 kg ha-1 K156 kg ha-1), and foliar fertilization (Basfoliar 12-4-6, ADOB Mn and Solubor DF) on the quantitative and qualitative composition of fungal populations colonizing potato tubers. Fungi were isolated immediately after harvest and after a five-month storage period. After seven days of incubation, fungal colonies were transferred onto agar slants for microscopic identification. Over the entire experimental period, more pathogenic fungi were obtained from potato tubers analyzed after storage (62.9% of the total fungal population after storage) than from those analyzed immediately after harvest (39.1%), and the greatest number of fungi was reported in 2004. Rhizoctonia solani was isolated most frequently, followed by Colletotrichum coccodes and Alternaria alternata. Pathogens of the genus Fusarium and the species Helminthosporium solani were not numerous. In the treatment A with soil mineral fertilization with lower NPK rates, larger numbers of pathogenic fungi were noted in 2004 after harvest and after five-month storage, and in 2005 after harvest. At the remaining dates of analysis, pathogens were more frequently isolated from potato tubers in experimental variant B with higher NPK rates. Immediately after harvest, the highest number of pathogenic fungi was isolated in the treatment with foliar application of ADOB Mn and Basfoliar 12-4-6. After five-month storage, pathogens most often colonized potato tubers in experimental variant B with foliar application of Solubor DF, Solubor DF and ADOB Mn, and in experimental variant A with a combination of fertilizers. In the other fertilization variants, including in the control treatment, the population size of pathogenic agents remained at a similar level.
W pracy przedstawiono wyniki trzyletniego doświadczenia ścisłego w Bałcynach z uprawą późnej odmiany ziemniaka Jasia. Badano wpływ poziomów nawożenia mineralnego: A (N 80 kg ha-1 P 80 kg ha-1 K120 kg ha-1) i B (N 120 kg ha-1 P 144 kg ha-1 K156 kg ha-1), a także nawożenia dolistnego (Basfoliar 12-4-6, ADOB Mn i Solubor DF) na skład ilościowy i jakościowy grzybów zasiedlających bulwy ziemniaka. Izolacje grzybów prowadzono bezpośrednio po zbiorze bulw i po 5-miesięcznym okresie przechowywania. Wyrosłe po 7-dniowym okresie inkubacji kolonie grzybów przeszczepiano na skosy agarowe w celu późniejszej identyfikacji mikroskopowej. Podczas całego okresu badań więcej grzybów chorobotwórczych otrzymano z bulw ziemniaka analizowanych po przechowywaniu niż z bulw po zbiorze, a największy ich udział zanotowano w 2004 r. Wśród nich najczęściej izolowanym był gatunek Rhizoctonia solani, rzadziej Colletotrichum coccodes i Alternaria alternata. Patogeny z rodzaju Fusarium oraz gatunek Helminthosporium solani wyosobniano nielicznie. Przeważającą liczebność patogenów w kombinacji z nawożeniem mineralnym doglebowym z niższą dawką NPK zanotowano w 2004 r. w obu terminach po zbiorze i przechowywaniu oraz w 2005 r. po zbiorze. W pozostałych analizowanych terminach patogeny częściej izolowano z bulw w kombinacji z wyższą dawką NPK. Najwięcej patogenów z bulw po zbiorze uzyskano w kombinacji z zastosowanym nawozem dolistnym ADOB Mn i Basfoliar 12-4-6 łącznie. Po przechowywaniu natomiast patogeny najczęściej kolonizowały bulwy w kombinacji B z nawożeniem dolistnym Solubor DF, Solubor DF i ADOB Mn łącznie oraz w kombinacji A z łącznym stosowaniem nawozów. Liczebność sprawców chorób bulw w pozostałych kombinacjach nawozowych, w tym kontrolnej, kształtowała się na zbliżonym poziomie.
Źródło:
Acta Agrobotanica; 2009, 62, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Do small-scale gaps in calcareous grassland swards facilitate seedling establishment?
Autorzy:
Baba, W
Kompala-Baba, A.
Powiązania:
https://bibliotekanauki.pl/articles/57390.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
generative reproduction
grassland
Polska
calcareous grassland
gap colonization
seedling
phenology
plant ecology
germination
Opis:
In this study we analyzed gaps originated in different seasons of the year vs. places of close vegetation in calcareous grasslands in terms of their suitability for seedling germination and establishment. Gaps, irrespective of the time of their origin, significantly promoted seedling emergence as compared with close swards. However, the season of gap creation influenced the rate of seedling germination/emergence. Seedlings occurred more frequently in autumn and spring gaps than in the summer ones. The highest mean number of seedlings and of their species were noted in autumn openings. However, the subsequent survival of seedlings in autumn gaps was low. On the contrary, in spring gaps juveniles occurred with the significantly highest mean number, frequency and species richness. The above results pointed to the positive, although very limited role of artificially created gaps as places favouring seedlings establishment.
Źródło:
Acta Societatis Botanicorum Poloniae; 2005, 74, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of irrigation and foliar fertilization on the colonization of American ginseng (Panax quinquefolium L.) diseased parts by different micro-organisms
Wpływ nawadniania i nawożenia dolistnego na zasiedlanie chorych organów żeńszenia (Panax quinquefolium L.) przez różne mikroorganizmy
Autorzy:
Pastucha, A.
Kolodziej, B.
Powiązania:
https://bibliotekanauki.pl/articles/28241.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
irrigation
foliar fertilization
colonization
American ginseng
Panax quinquefolium
diseased part
microorganism
fungi
fungi-like organism
plant disease
Opis:
Field studies on the health of American ginseng cultivated in the Lublin district on poor sandy soil were conducted in the years 2004-2006. The studies involved treatment combinations with irrigation and without irrigation as well as foliar fertilization with Alkalin PK and Resistim of American ginseng plants. Mycological analysis was made of diseased ginseng parts with the aim of determining the quantitative and qualitative composition of fungi-like organisms and fungi threatening the cultivation of this plant. Fungi from the genera of Cylindrocarpon, Fusarium and the following species Alternaria alternata, , Rhizoctonia solani, Sclerotinia sclerotiorum, as well as fungi-like organisms: Pythium irregulare and Phytophthora sp., were isolated from the infected parts of ginseng. The smallest number of fungi was isolated from the plants growing on the plots without irrigation and those where foliar application with Alkalin PK was applied.
Źródło:
Acta Agrobotanica; 2010, 63, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flora and habitat of potato pits on kame hills in North-Eastern Poland
Autorzy:
Kwiatkowska-Falinska, A J
Falinski, J.B.
Powiązania:
https://bibliotekanauki.pl/articles/56754.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Polska
ruderal flora
botany
habitat
kame hill
potato pit
Hacki village
Bielska Plain
kame area
colonization history
flora
Opis:
The research was carried out in north-eastern Poland in the vicinity of the village of Haćki (52°50’00’’N; 23°11’20’’E). This area is distinguished by an exceptionally numerous agglomeration of kames (10). Previous archaeological and soil research showed that kames have been inhabited by man from the iron age, and that the following stages of colonization are reflected in three levels of fossil soils. In modern times local people use the base of kames for the storage of potatoes over the winter. The potato pits are a cultural curiosity found only in this area. They are dug out in the cohesive, fine-grained substratum, which is the building material of kames, down to 1.5-2 m deep. Research plots (16) with a surface area of about 2-5 m2 were established in the potato pits in 1990. In the summer of the same year 16 phytosociological surveys were performed and soil samples taken. The investigated habitats are characterized by very low humidity. The concentration of carbon in the samples from potato pits dug out at the foot of a kame hill (the site of a settlement in the past) results probably from the occurrence of soil from the Roman period. At the present time the pits are covered by poor ruderal flora (approx. 10 species in one phytosociological survey). It is distinguished from other communities of such type by a low participation of species occurring in the xerothermic grasslands.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Are hermaphrodites better adapted to the colonization process in trioecious populations of Salix myrsinifolia?
Autorzy:
Mirski, P.
Brzosko, E.
Powiązania:
https://bibliotekanauki.pl/articles/56794.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
trioecious plant
hermaphroditism
colonization
trioecious population
Salix myrsinifolia
subdioecy
polygamic system
plant gender
size structure
sexual dimorphism
sex ratio
Opis:
In trioecious plant populations, the role of hermaphroditism is often uncertain. We investigated the advantages of hermaphroditism in the dioecious shrub Salix myrsinifolia. The sex ratio of 30 S. myrsinifolia populations in northeastern Poland (secondary range) and Lithuania (primary range) was investigated in 2010-2011. Measures of reproductive (number of catkins, number of flowers in catkins) and vegetative traits (height, diameter, number of shoots, vitality) were taken and compared among sexual morphs. In two populations, measurements collected 14 years prior on marked individuals were used to determine the rate of changes in height, crown diameter and survivorship rates. We found trioecy mostly in the secondary part of the range with an average share of hermaphrodites reaching 21% in the trioecious populations. The sex ratio varied between populations, but tended mostly towards female domination. Several traits differed significantly among sexes. The characteristics of hermaphrodites were often intermediate between males and females and provided no evidence for the higher competitive abilities of hermaphrodites. We concluded that the possible gain of hermaphroditism in the colonization process is restricted to reproduction. We consider hermaphroditism in S. myrsinifolia as an equilibrium between the allocation of resources for growth and reproduction in unstable conditions on the margins of the range.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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