|Title:||Soybean Yields Response to Planting Dates and Climatic Factors||Other Titles:||栽培期及氣象因子對大豆產量之影響||Authors:||Chwen-Ming Yang
|Keywords:||Soybean;Yield;Planting date;Climatic factor;Seed size;Genolype;大豆;產量;栽植期;氣象因子;種子大小;基因型||Issue Date:||16-Nov-1995||Publisher:||中華農業氣象學會||Journal Volume:||3||Journal Issue:||1||Start page/Pages:||9-16||Source:||中華農業氣象||Abstract:||
Yield and seed quality of soybean varied significantly in response to planting dales in Taiwan, but little research has been conducted to compare and clarify such differences. This study was carried out to clear up the variations of soybean yields from an annual cultivation at Wufeng, Taiwan, on a loamy soil. Twelve crops of soybeans (Glycine max. L.) with four genotypes, Kaohsiung selected 1 (KS1), Kaohsiung 2 (K2), Kaohsiung 3 (K3) and Kaohsiung selected 10 (KS10), were planted at density of 250,000 plants ha'1 each month in 1994. Climatic conditions during the growing periods indicated that all twelve growing periods were unique and distinctly different. The tested soybeans showed a significant response to planting date, genotype, and planting date-genotype interaction in grain and seed yields. There was, however, no consistent trend of planting date effect on yields. Results revealed that seed yields increase with the increasing of grain yields in soybeans. The 100- seed weight did not changed dramatically to planting dates as compared to yields. However, there was an uneven distribution of seed size in the tested genotypes to annual cultivation. The regression analyses showed that changes of grain and seed yields and 100-seed weight had correlation with climatic factors. Base on these results, soybean yields appeared to be varied greatly owing to planting date effect. The distribution of seed size was also affected by planting date. This variability was due partly to genotypic characteristics and climatic variations.
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