Author(s):

Snehal G Kanade, DW Thawal and SN Hasabnis

Abstract: The field experiment entitled “Growth of soybean (Glycine max (L.) Merrill) influenced by canopy temperature and humidity under different sowing dates” was conducted during kharif seasons of 2013 and 2014 at Department of Agricultural Meteorology Farm, Centre of Advanced Faculty Training in Agricultural Meteorology (CAFT), College of Agriculture, The canopy temperature (24.80⁰C) was lower at (S₁-24^th MW) as compared to delayed sowing (S₄-30^th MW) (24.80⁰C) and canopy humidity (93 and 89%), respectively. The canopy temperature (24.39⁰C) was lower at protected condition (Lambda cyhalothrin 5EC @ 1.0 ml l^-1) as compared to unprotected condition. The canopy temperature (24.80⁰C) was lower at (V₂-KDS-344) as compared to variety (V₁-JS-335), The canopy temperature (24.800C) was lower at (S₁-24^th MW) as compared to delayed sowing (S₄-30^th MW) (24.80⁰C) and canopy humidity (93 and 89%), respectively. It was observed that mean canopy humidity (%) remained between 87% to 92% across the total growing period of the crop. Application of Lambda cyhalothrin 5EC @ 1.0 ml l^-1 for two different varieties under four sowing windows produced significantly higher values of growth characters i.e. plant height (60.96), number of branches plant^-1 (8.94), leaf are plant^-1 (14.80dm²), dry matter accumulation (18.04) resulting in significant increase in pod numbers and grain yield during both the year as compared to unprotected conditions and delayed sowing windows.

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