Crop weather relationship in pigeonpea (Cajanas cajan L.)

Publication Date : 28/05/2015


Author(s) :

mekala ratnam , Dr S.Rajamani , Dr M.Sreekanth , Dr E. Narayana .


Volume/Issue :
Volume 1
,
Issue 5
(05 - 2015)



Abstract :

A field experiment was conducted at Regional Agricultural Research Station, Lam farm, Guntur, Andhra Pradesh, to study the crop weather relationship in pigeonpea under Krisha agro climatic conditions of Andhra Pradesh during kharif and rabi 2014-15 with two newly developed redgram genotypes viz., LRG 52 and LRG 104. The two varieties were sown from 2nd FN of June to 1st FN of October, total sowings adopted were eight at fortnightly intervals. The crop sown on 2nd FN of June received maximum rainfall and maximum temperature followed by sowings during 1st and 2nd FN of July and the lowest with 1st FN of October. Maximum sunshine hours (5.7 hrsd-1) recorded with 1st FN of October sowing, whereas early sowings received comparatively low sunshine hours. Due to variation in agro-climatic environment under different sowing windows, days to 50 % flowering, plant height, number of pods plant-1, yield were affected greatly. Weather parameters viz., total rainfall received with plant yield, maxuimum temperature with days to 50 % flowering, maximum number of sunshine hours day-1 with number of pods plant-1 and plant yield were found positive significant correlation, with the two newly developed redgram genotypes.


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