International Journal of Agriculture, Environment and Biotechnology
  • Year: 2021
  • Volume: 14
  • Issue: 2

Weed Dynamics of Hybrid Rice under the Influence of Fertilizer Levels and Weed Management Practices

  • Author:
  • Polagani Nagarjuna*, R.S. Singh, G. Adhilakshmi
  • Total Page Count: 4
  • Published Online: Sep 3, 2022
  • Page Number: 165 to 168

Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India

*Corresponding author: pol.nag143@gmail.com (ORCID ID: 0000-0002-3319-6869)

Online published on 3 September, 2022.

Abstract

A field experiment entitled “Weed Dynamics of Hybrid Rice under the Influence of fertilizer Levels and Weed Management Practices” was conducted during the Kharif season of 2017 at the Research Farm, TCA, Dholi, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur (BIHAR). The experiment was laid out in a split-plot design with twelve treatments. Among different levels of fertilizer, application of 100 % RDF recorded a minimum number of weeds/m2 (58.36/m2), weed dry weight production (73.12 g/m2), and weed growth rate (0.024 g/m2/day). In the case of weed management practices, Hand weeding (twice) was found to be the most efficient weed control (71.32%), a minimum number of weeds/m2(25.11/m2), weed dry weight production (21.12 g/m2) and weed growth rate (0.011 g/m2/day) but the minimum weed index (45.87%) was observed in weedy check.

• Application of 100% RDF and Hand weeding (twice) recorded a minimum number of weeds/m2.

• Weed dry weight production and weed growth rate.

• Hand weeding (twice) was found higher weed control efficiency over the weedy check.

Keywords

Weed control efficiency, Weed index, RDF, Hand weeding and weedy check