RESIDUAL TOXICITY OF METRIBUZIN BASED HERBICIDE MIXTURES APPLIED IN WHEAT ON SUCCEEDING FODDER MAIZE
SARITA RANI, SURESH KUMAR* AND V. S. HOODA
Department of Agronomy
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : sureshsilla@gmail.com)
(Received : 25 July 2017; Accepted : 6 September 2017)
SUMMARY
A field experiment was conducted during 2014-15 and 2015-16 at Research Farm, CCS Haryana Agricultural University, Hisar, Haryana (India) in a semi-arid climate to study the residual effect of metribuzin based herbicide mixtures applied in wheat on the biomass production of succeeding fodder maize. The experiment was laid out in split plot design with three replications. The treatments consisting of five varieties of wheat viz., WH 1105, HD 2967, DPW 621-50, WH 1124 and DBW 17 in main plots and six weed management practices i. e. Metribuzin (210 g/ha), metribuzin+fenoxaprop (150+100 g/ ha), metribuzin+pinoxaden (150+40 g/ha), metribuzin+clodinafop (150+45 g/ha), weed free and weedy check in sub-plots. All the herbicide treatments were applied at 35 days after sowing (DAS) of wheat. Fodder maize was planted after the harvest of wheat crop to study the residual effect of herbicides. The results revealed that neither the varieties nor the herbicides/weed management practices had any influence on the number of plants at 15 and 45 DAS, plant height at 30 and 45 DAS and above ground biomass of maize at 45 DAS. Further, no visual symptom of any residual toxicity was observed in the fodder maize plants.
Key words: Wheat, maize, residual effect, clodinafop, metribuzin, pinoxaden, fenoxaprop