1Department of Soil Science and Agricultural Chemistry, Annamalainagar-608 002, Tamil Nadu, India
2Department of Microbiology, Annamlai University, Annamalainagar-608 002, Tamil Nadu, India
*Corresponding Author: D. Venkatakrishnan, Department of Soil Science and Agricultural Chemistry, Annamalainagar-608 002, Tamil Nadu, India. Emali: mahemasree@yahoo.co.in
Rice is a crucial food source for almost half of the world’s population and is one of the most significant food crops worldwide. Humic acids, which are naturally occurring compounds formed from decomposed organic matter, can enhance rice growth, yield and nutrient absorption when applied.
A field experiment conducted from July to September 2022 in Kadavacheri village, Chidambaram, Cuddalore district, examined the impact of foliar applications of Humic Plus and soil applications of Green Magic on the growth of the rice variety ASD16. The soil was a clay loam (Typic Haplusterts) with a pH of 7.50, electrical conductivity of 0.40 dSm-1 and medium organic carbon content (6.02 g kg-1). Nutrient analysis indicated low N availability (238.3 kg ha-1), medium P (12.40 kg ha-1) and high K levels (302.5 kg ha-1). Treatments included NPK fertilizer application alongside varying combinations of foliar sprays of Humic Plus at rates of 5, 7.5 and 10 ml ha-1 and soil application of Green Magic at 15 kg ha-1. The trial, which included an absolute control and the 100% recommended dose of fertilizer (150:50:50 kg ha-1), was arranged in a randomized block design and replicated three times.
The best treatment was much pronounced with foliar application of Humic plus @ 10 ml ha-1 at 30 DAT and soil application of Greenmagic@15 kg/ha was recorded plant height (107.7 cm), productive tillers/hill (19.09), no. of panicle m-2 (335.4), no. of grains/ panicle (138.5), panicle length (26.6 cm), grain and straw yield (7276 and 8648kg ha-1).
Grain yield, Green magic, Humic plus, Rice, Straw yield
