Yield and its attributes as affected by planting dates in soybean (Glycinemax) varieties

Citation
Vs. Bhatia et al., Yield and its attributes as affected by planting dates in soybean (Glycinemax) varieties, I J AGR SCI, 69(10), 1999, pp. 696-699
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Agriculture/Agronomy
Journal title
INDIAN JOURNAL OF AGRICULTURAL SCIENCES
ISSN journal
0019-5022 → ACNP
Volume
69
Issue
10
Year of publication
1999
Pages
696 - 699
Database
ISI
SICI code
0019-5022(199910)69:10<696:YAIAAA>2.0.ZU;2-L
Abstract
A field study was conducted for 2 years during 1992-93 to find out the geno typic response in terms of yield and its attributes and to assess the suita bility of varieties under varying planting dates. The experiment comprised of 5 planting dates and 12 predominant soybean (Glycine mm (L.) Merr.) vari eties. Significant differences were obtained for yield and most of the yiel d attributes among planting dates and among varieties. Early planting by 20 June was found to be the most appropriate for high seed yield (1 666 kg/ha ) across years and varieties. In subsequent plantings of 30 June; 10, 20 an d 30 July, there were yield reduction of 4.8, 8.5, 28.1 and 39.7% respectiv ely. Suitable soybean varieties, viz 'JS 335','NRC 2' and 'JS 71-05' were i dentified to give high soybean yield across all planting dates and years. T he reduction in seed yield due to late plantings was mainly due to the comb ined effect of reduced total biomas, pods/plants, plant height, number of b ranches, 100 seed weight, days to flowering and days to maturity.