Effect of Microclimatic Parameters at Different Sowing Dates on Capsule Production of Sesame (Sesamum indicum L.) in a Tropical Humid Region |
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| Authors: | R Nath P K Chakraborty A Chakraborty |
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| Institution: | Authors' addresses: Lecturers in Agronomy and Reader in Agricultural Meteorology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, Pin-741 235, West Bengal, India |
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| Abstract: | An experiment was conducted during the summer seasons of 1993 and 1994 on sesame ( Sesamum indicum L.) to study the effect of certain meteorological parameters on the capsule production efficiency of the main stem and branches of sesame cultivars at different sowing dates in alluvial (Entisol) soil of the tropical humid region in West Bengal, India. The highest capsule production by the main stem and the first, second and third primary branches in accrocentric order was observed for the crop sown on 19 February. The number of capsules on the main stem was reduced by 70.51 and 34.98 % when the crop was sown on 21 March and 28 April, respectively. The humidity profile at 50 days after emergence (DAE) and photosynthetically active radiation (PAR) at 70 DAE had direct positive effects on main stem capsule production. The variations of 38, 21 and 56 % in main stem contribution to capsule production might be explained by the temperature profile, relative humidity and PAR, respectively. Thecultivar Rama produced higher numbers of capsules in branches than Kanke-1 and B-67 at all times of sowing. |
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| Keywords: | Capsule production path analysis photosynthetically active radiation relative humidity sesame sowing dates temperature |
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