Author:
SACHIN K S,DASS ANCHAL,DHAR SHIVA,RAJANNA G A,SINGH TEEKAM,SUDHISHRI S,KUSHWAHA H L,KHANNA MANOJ
Abstract
A field experiment was conducted during rainy (kharif) seasons of 2020 and 2021 at research farm of ICAR-IARI, New Delhi to study the effect of precision nutrient and irrigation management on growth and productivity of soybean [Glycine max (L.) Merr.] under system of crop intensification (SCI). The study was carried out in a split-plot design and replicated thrice. The main-plot included 3 irrigation practices, I1, [standard flood irrigation at 50% DASM (FI)] and sprinkler (Spr); I2 (Spr 80% ETc); I3 (Spr 60% ETc) and sub-plots having 5 precision nutrient management (PNM) practices, viz. PNM1 [SCI protocol]; PNM2 [RDF, Basal dose incorporated (50% N, full dose of P and K)]; PNM3 [RDF, Basal dose point placement (BDP) (50% N, full dose of P and K)]; PNM4 [75% RDF, BDP (50% N, full dose of P & K)] and PNM5 [50% RDF, BDP (50% N, full P and K)] and 1 absolute control with conventional practice. Further, for PNM2-PNM5 remaining 50% N was supplied through SPAD assisted top-dressing. PNM and irrigation practices improved the plant height and number of branches of soybean. Spr 80% ETc recorded significantly higher crop growth indices, viz. CGR (9.13 g/m2/day), RGR (31.48 mg/g/day), NAR (16.47 mg/cm2/day) and LAI (2.02 cm2/plant) over FI at 60–90 DAS. Root attributes also improved under SCI over control. The mean grain yield was significantly higher in Spr 80% ETc (2.50 tonnes/ha) over FI. Similarly, PNM3 recorded significantly higher mean grain yield (2.44 tonnes/ha) over PNM5. Overall, precision nutrition and irrigation enhanced the soybean growth and yield under SCI, hence could be propounded in the soybean growing regions.
Publisher
Indian Council of Agricultural Research, Directorate of Knowledge Management in Agriculture
Subject
Agronomy and Crop Science
Reference23 articles.
1. Allen R G, Pereira L S, Raes D and Smith M 1998. Crop Evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. FAO, Rome 300(9).
2. Anonymus. 2014. Four decades of STCR research-Cropwise recommendations, pp. 272. Indian Institute of Soil Science, Bhopal, Madhya Pradesh.
3. Banjara T R, Bohra J S, Kumar S, Singh T, Shori A and Prajapat K. 2022. Sustainable alternative crop rotations to the irrigated rice-wheat cropping system of Indo-Gangetic Plains of India. Archives of Agronomy and Soil Science 68(11): 1568–85.
4. Begum A, Aminul I, Quazi M A, Anwarul I and Moshiur R. 2015. Effect of nitrogen and phosphorus on the growth and yield performance of soybean. Research in Agriculture Livestock and Fisheries 2(1): 35–42.
5. Choudhary H R, Sharma O P, Yadav L R and Choudhary G L. 2011. Effect of organic sources and chemical fertilizers on productivity of mungbean. Journal of Food Legumes 24(4): 324–26.