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Background: Dolichos bean Dolichos lablab (Roxb.) (L) Var. typicus is one of the most important leguminous vegetable crops cultivated in tropical plains of India. The mature and immature pods are rich in protein, minerals and vitamins. Most of the pole types of dolichos beans are photosensitive in nature, suited for growing in specific season like kharif and not productive when grown in summer season. Different cultivars of Dolichos bean require different seasons for getting maximum yield. With this background, studies on seasonal influence on growth and yield of dolichos bean genotypes were carried out. Methods: An experiment was conducted to assess the effect of season and genotypes in Dolichos bean. The experiment was laid out in factorial randomized block design with nine treatment combinations and four replications. In this study, three genotypes of dolichos bean viz., CO 1, Dbp-3 and Dbp-4 were sown during kharif, rabi and winter seasons. Result: The main and interaction effects on genotypes and season of sowing had a significant influence on green pod yield, crude fibre, crude protein and total dry matter production. The genotype Dbp-3 sown during kharif season recorded the highest values for green pod yield (23.43 t.ha-1), crude protein (5.99%), dry matter production at various stages of growth (65.9, 254.3, 305.8, 359.2, 389.8 and 418.0 g.plant-1 at 30, 60,90,120,150,180 days after sowing respectively) and it was significantly different from all other treatments. The same treatment i.e., genotype Dbp-3 sown during kharif season was recorded the lowest amount of crude fibre content (1.53%).
Venkatesan et al. (Wed,) studied this question.
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