Author(s):

GB Raut, PK Waghmare and DS Bankar

Abstract: The field experiment was conducted on experimental farm Department of Agronomy, College of Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, during kharif season 2017, entitled “Studies on relationship between crop growth, yield and physical environment within the crop canopy of Sesame (Sesamum indicum L.) under different weather conditions”. An experiment was conducted in randomize block design with six replications. Treatment under study were four sowing dates in kharif season i.e. D₁ (23^rd MW), D₂ (25^th MW), D₃ (27^th MW) and D₄ (29^th MW), and one variety AKT-64. The results found that all the biometric observations and yield contributing characters such as total number of capsules plant^-1, seed yield (kg/ha^-1), straw yield (kg/ha^-1) and biological yield (kg/ha^-1),) significantly highest yield in sown in D₂ (25^th MW) followed by D₁ (23^rd MW). Sowing at D₂ (25^th MW) found superior over the rest of treatments with production of highest grain yield (440.8 kg/ha^-1) followed by sowing in first sowing date D₁ (23^rd MW) (386.3 kg/ha^-1), third sowing date D₃ (27^th MW) (317.8 kg/ha^-1) and lowest grain yield was observed in fourth sowing date D₄ (29^th MW) (237.2 kg/ha^-1). The highest GDD was observed in D₁ 23^th MW sowing date i.e. 2755.5 ⁰C day. HTU was observed highest in D₁ 23^th MW i.e. 14298.4 0C day/hr. PTU was highest in D¹ 23^th MW i.e. 35069.0 0C day/hr. PTI observed during total crop growth period was highest in D₁ 23^th MW i.e. 26.7 ⁰C as compare to remaining treatments. HUE was highest in D₂ 23^th MW observed during total crop growth period. In case of date of sowing the highest GDD, HTU, PTU, PTI in D₁ 23^th MW and HUE was highest in D₂ 25^th MW.

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