Effect of irrigation scheduling, conjunctive use of water sources and fertilizer levels on yield and water productivity of groundnut (Arachis hypogaea)

Verma, O.; Das, M.; Kumar, A.; Sethi, R.; Singandhupe, R.; Rautaray, S.; Mandal, K.

Indian Journal of Agronomy 60(4): 576-580

2015


ISSN/ISBN: 0537-197X
Accession: 066183681

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Abstract
A field experiment was conducted for 2 consecutive years 2008-09 and 2009-10 at Deras, Mendhasal, Odisha, to study the effect of conjunctive use of water sources and fertilizer levels on yield and water use of winter (rabi) season groundnut (Arachis hypogaea L.). The treatments included 3 levels of conjunctive use of water [C-1-(2 irrigations through canal water only, C-2-2 irrigations with canal water + 1 irrigation with ground water and C-3-2 irrigations with canal and 2 irrigations with ground water)] and 5 fertilizer treatments, [(F-0, no NPK; F-1, 100% NPK (20, 40 and 40 kg/ha as N, P2O5 and K2O), F-2, sugarcane trash bio-compost (STBC) alone (1 t/ha); F-3, 75% NPK + sugarcane trash bio-compost (0.25 t/ha) and F-4, 50% NPK+ sugarcane trash bio-compost (0.50 t/ha)]. Pod and haulm yields of groundnut were significantly increased with conjunctive-use of water sources (ground and canal water) compared to canal water irrigation alone. The increase in pod yield was 45.3% and haulm yield 40.3% with conjunctive use of 2 irrigations through canal and 2 irrigations through ground water over 2 irrigations with canal water. This treatment also gave the maximum gross returns ((SIC)47,714/ha), net returns ((SIC)35,166/ha) and benefit: cost ratio (2.80). With application of 75% NPK + STBC (0.25 t/ha) 70.3% and 73.4% increase in pod and haulm yields was observed compared to the control (no fertilizer application). The highest water use (434 mm), water-use efficiency (5.06 kg/ha-mm) and benefit: cost ratio (3.11) were recorded with application of 75% NPK + STBC (0.25 t/ha).