Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Effect of post emergence herbicides on weed growth and yield of irrigated maize.

Abstract

A field experiment was conducted to study the effect of post emergence herbicides on weed growth and yield of irrigated maize at Regional Agricultural Research Station Vijaypura, during kharif 2014. Results revealed that, next to the weed free check (6.65 t ha-1), Atrazine 50% WP @ 1.0 kg a.i./ha as pre emergence followed by one hand weeding with inter culturing at 40-45 DAS recorded higher grain yield (6.14 t ha-1) and straw yield (6.87 t ha-1) and this was followed by Topramezone 33.6% SC @ 33.6 g a.i./ha +MSO adjuvant as post emergence at 20-25 DAS due to improvement in yield attributing characters like cob length, cob girth and grain weight per cob. Next to the weed free check, lower total weed population m-2 (1.73), weed dry weight m-2 (6.56 g) and higher weed control efficiency (86.88%) were recorded with Atrazine 50% WP @ 1.0 kg a.i./ha as pre emergence followed by one HW with IC at 40-45 DAS and which was followed by post emergence application of Topramezone 33.6% SC @ 33.6 g a.i./ha +MSO adjuvant at 20-25 DAS (2.93, 9.19 g and 74.22%, respectively).