HEAT UNIT EFFICIENCY OF GROUNDNUT VARIETIES IN SCATTERED PLANTING WITH VARIOUS FERTILITY LEVELS

Abstract

A field experiment was conducted during kharif seasons of 2009 and 2010 on effect of four growing environments

(20^th April, 15^th May, 9^th June and 4^th July) and four fertility levels (0, 20 N:40 P₂O₅, 30N:60 P₂O₅ and 40N:80 P₂O₅ kg /ha) on various agronomic traits of two varieties (HNG 10 and TG 37A) of groundnut under semi-arid region of Rajasthan. Semi-spreading variety HNG 10 had yields i.e. pod, kernel, haulm and biological yield were also statistically at par with each other from 20^th April to 9^th June sowing while days to maturity reduced significantly with delay sowing. Variety TG 37A sown at 4^th July had significantly higher yields at 4^th July sowing. However, in 9^th June sowing had significantly higher heat unit efficiency than all three sowing. Significantly higher yields were recorded in 30 kg N60 kg P₂O₅/ ha which were statistically at par with 40 kg N-80 kg P₂O₅/ ha.