Influence of herbicides and their mixtures on growth, yield attributes productivity and economics of wheat

Abstract

Weed infestation is one of the major biotic factors limiting wheat production and productivity due to absence of well management options. Herbicides have increasingly become a key component on crop production system since offers easiest, cheapest and timely weed management option. Reduction in herbicide usage without compromising yields can lead to less environment harm and lower production cost. In order to control the broad-leaf weeds infestation in wheat, evaluation of herbicides and their mixtures were tested in a field experiment in CCS Haryana Agricultural University Research Farm area. Results promised that among herbicides and their mixtures aclonifen 500 + diflufenican 100 SC @ 1750 + 1750 g/ha and closely followed by halauxifen-methyl + florasulam + carfentrazone + surfactant @ 24.99 + 50 + 750 g/ha with maximum growth and yield attributes, biological, straw and grain yield, harvest index and weed control efficiency while minimum grain yield and weed control efficiency were recorded with application of 2,4-D NA (80 WP) and 2,4-D Ester (38 EC) @ 625 and 1316 g/ha. Hence highest net returns (Rs. 65,733 ha-1) and B: C (1.82) recorded by application of aclonifen 500 + diflufenican 100 SC which were 0.13, 4.6 and 3.4 per cent higher than weed free and 47.1, 193.7 and 41.1 per cent higher than weedy check, respectively.