Soil and foliar application of humic acid on productivity of groundnut(<em>Arachis hypogea</em> L.)

Abstract

A field experiment was conducted at the Agricultural Research Station, Nipani, University of Agricultural Sciences, Dharwad during kharif 2018 to study the effect of soil and foliar application of humic acid (HA) on productivity of groundnut. Combined application of 30 kg HA ha-1 to soil as basal followed by foliar spray of 2 per cent HA at 45 days after sowing (DAS) along with recommended dose of fertilizers (RDF) recorded significantly higher plant height (21.06 cm), number of branches per plant (8.53), total dry matter production per plant (29.67 g) at harvest, number of pods per plant (21.1), pod weight per plant (19.9 g), pod (2802 kg ha-1), haulm (3924 kg ha-1) and kernel yield (1971 kg ha-1) as compared to RDF alone (21.06 cm, 8.53, 29.67 g, 15.3, 13.6 g, 2319 kg ha-1, 3273 kg ha-1 and 1536 kg ha-1, respectively).