Author(s):

Harshad Thakur, K Bhanu Rekha, Yogesh Y Giri and SN Sudhakar Babu

Abstract: An experiment was conducted during <em>kharif</em> 2012 to find the effect of humic and fulvic acid on growth as well as yield traits of sunflower (DRSH- 1) at the college farm, college of agriculture, Rajendranagar, Hyderabad. The results indicated that combined application of RDF + humic acid granules @ 12.5 kg ha^-1 (basal) significantly influenced stem girth, SPAD chlorophyll meter readings, head diameter and thousand seed. Central unfilled diameter was significantly influenced by different treatments. Application of RDF alone recorded higher central unfilled diameter (2.0 cm). Lowest central unfilled diameter was recorded with RDF + soil application of 12.5 kg ha^-1 humic acid granules.

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