Effects of sowing date and growth duration on growth and yield of groundnut in a Mediterranean-type environment in Turkey

Çalışkan, Sevgi; Çalışkan, Mehmet Emin; Arslan, Mehmet; Arıoğlu, Halis

doi:10.1016/j.fcr.2007.08.007

Cited by 65 publications

(60 citation statements)

References 21 publications

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“…Developing countries account for 97% of the world's groundnut area and 94% of the total production (FAOSTAT, 2010). However, groundnut yield in this part of the world and particularly in Africa is lower than the world average due to prevailing abiotic, biotic and socioeconomic factors (Pande et al, 2003;Upadhyaya et al, 2006;Caliskan et al, 2008).…”

Section: Introductionmentioning

confidence: 98%

Incidence of Aspergillus contamination of groundnut (Arachis hypogaea L.) in Eastern Ethiopia

Mohammed¹,

Chala²

2014

Afr. J. Microbiol. Res.

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The production of groundnut is constrained by several factors, among which is Aspergillus spp. In addition to causing quantitative losses, Aspergillus spp. produce highly toxic and carcinogenic chemical substances known as aflatoxins. This study was conducted with the objectives to (i) identify Aspergillus species associated with groundnuts, (ii) determine the frequency of seed contamination, and (iii) survey agro-ecological conditions related to groundnut contamination by Aspergillus spp. About 270 groundnut samples were collected from farmers' storage, fields and local markets of three districts that is, Babile, Darolabu and Gursum of Eastern Ethiopia for mycological analysis in the year 2010. Results of the mycological analysis suggested heavy infestation of groundnut samples by various molds including Aspergillus niger, Aspergillus flavus, Aspergillus ochraceus, Aspergillus parasiticus and Pencillium species. At the district level, the incidence of infected groundnut kernels ranged from 50 to 80%. Within the district kernel infection varied between 36.3 and 100%. The common Aspergillus symptoms (yellowing or chlorotic leaves, wilting, drying and brown or black mass covered by yellow or greenish spores) were also observed in groundnut fields. The current results were consistent with our earlier report of heavy aflatoxin contamination of groundnut from the same places, suggesting the urgent need to apply control measures against toxigenic fungi and associated mycotoxins.

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Section: Introductionmentioning

confidence: 98%

Incidence of Aspergillus contamination of groundnut (Arachis hypogaea L.) in Eastern Ethiopia

Mohammed¹,

Chala²

2014

Afr. J. Microbiol. Res.

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“…In most of Poland there occurs an increase in sunshine duration in May and August and a decrease in September; in spring in the southern and central parts of the country, in summer in the south-western part and in autumn in the central-western part of Poland (Kozminski and Michalska, 2004). A relationship between yields of crop plants as well as the course of growth and development on sunshine duration or intensity of solar radiation was shown by Makowiecki (1985), Lykowski (1984), Rao et al (1998), Caliskan et al (2008), Kumar et al (2008) and Kalbarczyk (2009). The effect of solar conditions on the quantity of yield of crop plants and on the course of growing is not strictly determined; thus, we can still search for their optimal use.…”

Section: Introductionmentioning

confidence: 87%

Risk of field cultivation of pickling cucumber caused by unfavorable sunshine duration conditions

Kalbarczyk

2011

Sci. agric. (Piracicaba, Braz.)

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Solar energy, accessible to plants during sunshine from the sunrise to the sunset is of key importance in productivity of agrocenoses. The aim of the work was to determine risk of pickling cucumber cultivation caused by an unfavorable course of sunshine duration in Poland on the basis of a 40-year research period . The research into the subject was undertaken due to frequent occurrence of sunshine deficiency in Poland and its high temporal and spatial variability. Effect of solar conditions described by sunshine duration in the five development stages on the quantity of the total and marketable yield of cucumber with consideration of a linear trend of an independent variable was determined by means of multiple regression analysis. The accuracy of the equations was evaluated on the basis of, among other things, determination coefficient, average relative forecast error and the indexes: mean bias error (MBE), mean absolute bias error (MABE) and root mean square error (RMSE). Cucumber (Cucumis sativus L.) yield was confirmed for the period from the end of emergence to the beginning of flowering and from the beginning of harvesting to the end of harvesting. Cucumber yield was lower by 18% than the multiannual average in the years 1966-2005 every 1.5-2 years -in the case of the occurrence of the shortage in the period from the end of emergence to the beginning of flowering and by 12-15% every 2-3 years in the period from the beginning of harvesting to the end of harvesting. In four years, out of the 40 considered ones, simultaneously in both cucumber development stages, unfavorable solar conditions occurred, causing reduction by at least 5% in the total yield of the plant in Poland, and in three years -the marketable yield. Key words: development, growth, reduction in yield, solar conditions Risco do cultivo de campo de pepino decapado causado por condições desfavoráveis de duração de brilho solar RESUMO: A disponibilidade de energia solar para as plantas desde o nascer ao por do sol é de fundamental importância para todo agronegócio. O objetivo deste trabalho foi determinar o risco da produção de pepino (Cucumis sativus L.) decapado causado pelo curso desfavorável de duração da radiação solar na Polônia, baseado em um período de 40 anos de pesquisa . A pesquisa foi realizada pelo fato da ocorrência frequente de deficiência de insolação na Polônia e sua alta variabilidade temporal e espacial. O efeito das condições solares descritas pela duração da insolação foi estudado em relação às produtividades total e comerciável de pepino, considerando uma tendência linear de uma variável independente. A precisão das equações foi avaliada com base no coeficiente de determinação, erro médio relativo de precisão e índices: erro médio de bias, erro médio absoluto de bias e raiz do erro médio quadrado. A produtividade foi analisada a partir da emergência até o início do florescimento e do inicio ao fim da colheita. A produtividade de pepino foi 18% menor em relação a media multianual dos anos 1966-2005 cada 1,5-2 anos -n...

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“…Plants sown late at sixth sowing date (15 th June) needed less HTU to reach maturity and harvesting stages (26192 and 31269) for both seasons, respectively. This might be due to the differences in photoperiod during growth stages at different sowing dates [3].…”

Section: Accumulated Helio-thermal (Htu) Units From Emergence Till Hamentioning

confidence: 99%

“…Agricultural processes, including planting dates, are factors influencing growth and production of peanut due to variations in temperatures and photoperiod from time to time, affecting most of the vital processes and seed development [2,3,4]. Potassium is a necessary nutrient for improving crop yield and quality owing to its role in the formation of bacterial nodes, the activation of more than 80 enzymes and its positive role in the transmission of assimilates [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Heat and Helio-Thermal Units Accumulation of Peanut as Affected by Planting Dates, Potassium and Calcium Spraying

2018

Adv. Environ. Biol

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Effects of sowing date and growth duration on growth and yield of groundnut in a Mediterranean-type environment in Turkey

Cited by 65 publications

References 21 publications

Incidence of Aspergillus contamination of groundnut (Arachis hypogaea L.) in Eastern Ethiopia

Incidence of Aspergillus contamination of groundnut (Arachis hypogaea L.) in Eastern Ethiopia

Risk of field cultivation of pickling cucumber caused by unfavorable sunshine duration conditions

Heat and Helio-Thermal Units Accumulation of Peanut as Affected by Planting Dates, Potassium and Calcium Spraying

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