Abstract

Research Article 

Evaluation of different post-emergence herbicides in chickpea (Cicer arietenum L.)

Indrajeet Kumar Niranjan, Shashank Tyagi^*, Birendra Kumar and Amit Kumar Pradhan

Department of Agronomy, Bihar Agricultural College, Sabour, Bhagalpur, Bihar-813210, India  

*Corresponding author e-mail: drshashank_tyagi@rediffmail.com

(Received: 01/05/2020; Revised: 15/05/2020; Accepted: 01/06/2020)

ABSTRACT

A field experiment was conducted during rabi season of 2018-2019 at research farm of Bihar Agricultural University, Sabour, Bhagalpur to assess the effect of various post-emergence herbicides in chickpea. The results indicated that among different herbicides, post-emergence application of imazethapyr + imazamox @ 60 g a.i. ha-1 at 20 days after sowing recorded significantly lowest weed density & weed dry weight at 60 days after sowing and highest weed control efficiency at harvest, which was statistically at par with quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing. As a consequence of effective weed control, quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing recorded significantly highest grain yield, straw yield and harvest index which was significantly superior over hand weeding twice at 30 and 50 days after sowing. In weedy check, uncontrolled weed growth caused significant reduction in grain yield of chickpea. Net returns and B:C ratio was found maximum with quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing which was significantly superior over weedy check. 

Key words: Chickpea, Economics, Post emergence herbicide, Weed flora, Yield