Productivity of French bean genotypes as influenced by microclimatic modifications
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Date
2023
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Punjab Agricultural University
Abstract
Modification of microclimate is a measure factor that can affect growth and productivity of French bean. A study conducted at Ludhiana, Punjab, India to find out the effect of microclimatic modifications on production of French bean. The two experiments were conducted during winter and spring. It comprised of four treatments: open conditions, whole season covered (with polythene sheet), covered at vegetative stage (with polythene sheet) and covered at reproductive stage (with polythene sheet) during winter season. On the other hand, treatments during spring season were: open conditions, whole season covered (with shade net), covered at vegetative stage (with shade net) and covered at reproductive stage (with shade net). Two cultivars; FBP-1 and Kentucky Wonder were used during both the experimental seasons. During both the seasons, high chlorophyll content, more vegetation growth and reproductive was observed that contributed to higher yield. Higher pod yield (167.0 q/ha) was obtained from whole season cover conditions as compared to open conditions (130.7 q/ha) during winter season. However, during spring season overall yield was less due to rise in temperature as compared to winter season but among the studied treatments under spring season, yield was higher (94.8 q/ha) under covered conditions than in open conditions (56.3 q/ha). Apart from this, Agrometeorological indices i.e., GDD (861oC days) and PTU (9133 oC day hour) were also higher under covered conditions during whole season. On the other hand, value of GDD (1027oC day) and PTU (12257oC day hour) was higher under covered condition during reproductive stage only. Besides these, radiation use efficiency was also higher under covered conditions (18.5 g/MJ and 5.2 g/MJ)) during both seasons. The study concludes that among the cultivars, FBP-1 (168.8 q/ha), performed better than Kentucky Wonder (128.7q/ha) and the analysis of growth, yield attributes and agrometeorological indices, revealed that the winter season is the best season as compared to spring season.
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Komal Rani (2023). Productivity of French bean genotypes as influenced by microclimatic modifications (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.