DIRECT AND RESIDUAL EFFECT OF HERBICIDES, PHOSPHATE SOLUBILIZERS USED IN WHEAT ON THE PRODUCTIVITY AND PROFITABILITY OF WHEAT (TRITICUM AESTIVUM L.)—FODDER MAIZE (ZEA MAYS) SYSTEM

Abstract

A field experiment was conducted at Instructional Farm, Rajsthan College of Agriculture, Udaipur. The results indicated that pendimethalin being at par with other herbicides, produced the highest grain (47.2 q/ha) and biological (110.5 q/ha) yields closely followed by isoproturon. However, maximum net return (Rs 33073 /ha) and B:C ratio (3.60) were obtained from isoproturon. Phosphorus fertilization at 45 kg P2O5/ha significantly enhanced the yield as well as net return (Rs. 31467/ha) and B:C ratio (3.20) over 30 kg P2O5/ha. Seed inoculation with PSB had significant positive effect on wheat yields, net return (Rs. 31336/ha) and B: C ratio (3.18) as compared to no inoculation. Fodder yield and economics of maize was not influenced significantly due to herbicides applied in preceding wheat crop. Application of 60 kg P2O5/ha to preceding wheat crop had significant residual effect and produced higher green fodder yield (5.9%), net return (Rs. 19526/ha) and B: C ratio as compared to 30 kg P2O5/ha. Further, system productivity as wheat equivalent yield, net return and B: C ratio was also influenced significantly due to use of herbicides, phosphorus and PSB in wheat.