Journal
AGRICULTURE-BASEL
Volume 11, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/agriculture11050413
Keywords
soybean; sowing date; yield; day length; temperature; development; vegetation period; vegetative and generative stage
Categories
Funding
- Ministry of Agriculture and Rural Development
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Soybean is a plant sensitive to weather changes, with sowing dates playing a crucial role in its development and yield. Delaying the sowing date can shorten the growth period and affect the yield. It is important to pay special attention to selecting proper sowing dates and breeding varieties adapted to local conditions.
Soybean is a thermophilic and photophilic plant very sensitive to weather course during the vegetation period. This trait limits soybean cultivation in higher latitude countries. This field study aimed to evaluate the effects of three sowing dates on the development, the duration of vegetative and generative stages, and the yield of two soybean cultivars (Lissabon and Merlin) under conditions in south-western Poland in the years 2016-2019. The sowing date determines the temperature and the day length available for soybean plants, influencing development and yield. Delaying the sowing date by 20 days in relation to the earliest (16-21.04) resulted in the shortening of the length of the vegetative development by 12 days and the shortening of the entire vegetation period by 14 days. The delayed sowing date (06-19.05) under the conditions of south-western Poland (Lower Silesia) contributed to a significant decrease in yield. Lissabon produced greater soybean yield than Merlin. Special attention should be paid to proper seed sowing dates in soybean agriculture practice. It is necessary to breed soybean genotypes adapted to day length and thermal conditions of the cultivation area to achieve the maximum seed yield.
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