Thermal requirement of pigeon pea varieties at different phenological stages under varied weather conditions

BS Bhalerao; DC Lokhande; BR Bobade

Thermal requirement of pigeon pea varieties at different phenological stages under varied weather conditions

Author(s):

BS Bhalerao, DC Lokhande and BR Bobade

Abstract:

An experiment was conducted on the farm of Department of Agricultural Meteorology, College of Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S)., during kharif 2017 entitled “Assessment of pigeon pea (Cajanus cajan L.) cultivars under varied weather conditions” to study the GDD, HTU and PTU requirement for different phenological stages of pigeon pea cultivars. The experiment was laid out in split plot design with three replications. The layout consisted of total 36 experimental units i.e. four dates of sowing in different Meteorological Weeks (MW) viz., D₁-25 MW, D₂-27 MW, D₃-29 MW and D₄-31 MW and three varieties (V) viz., V₁- BDN-711, V₂- BDN-716 and V₃- BSMR-736 with gross plot size 5.4 m x 5.0 m and net plot size 4.5 m x 4.0 m. The results revealed that among all the phenophases of pigeon pea, floral bud initiation to 50 per cent flowering (P₃) stage recorded higher values of GDD, HTU and PTU. Among the three varieties, BDN-711 performed better as compared to the remaining phenophases. The total GDD required during crop growth period was highest in D₁ (4188.8 ⁰Cd day^-1), followed by D₂ (3966.5⁰Cd day^-1), D₃ (3814.2 ⁰Cd day^-1) andD₄ (3620.7 ⁰Cd day^-1), respectively.

In case of varieties, GDD requirement of all the varieties during crop phenophases viz., BSMR-736 (4538.55 ⁰C), BDN-716 (4242.37 ⁰C) and BDN-711 (4036.0 ⁰C), respectively. HTU required during all phenophases was highest in D₁i.e. 26060.8⁰C day hour as compared to remaining dates of sowing. In case of varieties, BSMR-736 required highest total HTU i.e. 27962.86 ⁰C day hour, as compared to other varieties. PTU required during all phenophases was highest in D₁ i.e. 49264.09 ⁰C day hour, as compared to remaining treatments. In case of varieties, BSMR-736 required highest total PTU i.e. 53293.92 ⁰C day hour, as compared to other three varieties. It might be due to genotypical differences in crop duration and yield.

Pages: 1425-1428 | 971 Views 470 Downloads

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Journal of Pharmacognosy and Phytochemistry

How to cite this article:

BS Bhalerao, DC Lokhande and BR Bobade. Thermal requirement of pigeon pea varieties at different phenological stages under varied weather conditions. J Pharmacogn Phytochem 2020;9(2):1425-1428.

Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

Vol. 9, Issue 2 (2020)

Thermal requirement of pigeon pea varieties at different phenological stages under varied weather conditions

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