• Deepa
• suruchi tyagi
• Y.V.Singh

An experiment was conducted at Agricultural Research Farm, Indian Agricultural Research Institute, New Delhi on "Efficacy of integrated nutrient management on productivity and uptake of wheat (Triticum aestivum L.) " during rabi season of 2014-15 and 2015-16. The experiment was laid out in split plot design with two biofertilizer viz. No biofertilizer and Azotobacter, two levels of herbicides, viz. no herbicide, Clodinafop-propargyl application in main plot and three times of nitrogen application, viz. Chemical fertilizer (recommended dose of urea), Natural fertilizer + chemical fertilizer (50:50) and Natural fertilizer +chemical fertilizer (25:75) in sub plot treatment three replications. The results of the experiment indicated that inoculation of Azotobacter resulted higher number of grains per spike (58.06 and 60.85) and grain weight (6.71 and 6.89 g) which was significantly more than uninoculated plants. The 1000 seed weight of wheat significantly increased with the application of Azotobacter. The highest seed yield (45.77 and 46.72 q/ha) was recorded with Azotobacter application which was significantly higher than uninoculated control (38.98 and 46.72 q/ha) during 2014-15 and 2015-16, respectively. Similarly straw, biological yield and harvest index of the crop was also improved significantly with Azotobacter application as compared to control. The growth attributes i.e. plant height and dry matter accumulation were found higher in Clodinafop – Propargyl 60 g ha-1 at 30 DAS while least growth attributes was recorded under untreated control during both the years. The treated plots exhibited significantly higher number of grains per spike (57.14 and 59.87), grain weight per spike (7.05 and 7.23 g) and 1000-grain weight than no weedicide control during respective years. The application of Clodinafop – Propargyl 60 g ha-1 at 30 produced significantly higher (45.15 and 46.62 q/ha) grain yield than untreated plots (36.59 and 40.57 q/ha). The combined application of 75% N by urea along with 25% natural fertilizer increased the number of effective tillers m-2, number of grains per spike, length of spike and the test weight. The combined application of 25% N applied by natural fertilizers + 75 N through urea registered highest (44.47 and 45.94 q/ha) grain yield of wheat during 2014-15 and 2015-16 of study which was significantly higher than the treatments where 50% N through natural + 50% through urea fertilizers were applied. The maximum N uptake by seed (79.83 and 81.85 kg/ha), straw (31.35 and 32.35 kg/ha) and total N uptake (111.07 and 114.15 kg/ha) was recorded under Azotobacter treated plants. The weedicide Clodinafop-propargyl applied crop recorded higher N uptake by seed (78.13 and 80.65 kg/ha) and straw (30.31 and 31.10 kg/ha) and total (108.44 and 111.44 kg/ha) and nitrogen applied through natural fertilizer (25%) + through urea (75%) recorded significantly higher nitrogen uptake through seed (78.17 and 81.41 kg/ha), straw (31.64 and 32.51 kg/ha) and total N uptake (109.81 and 113.99 kg/ha) during 2014-15 and 2015-16, respectively

clodinafop-propargyl, Azotobacter

"Efficacy of integrated nutrient management on productivity, uptake and economics of wheat (Triticum aestivum L.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.695-703, MAY-2018, Available :http://www.jetir.org/papers/JETIR1903G99.pdf

"Efficacy of integrated nutrient management on productivity, uptake and economics of wheat (Triticum aestivum L.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp695-703, MAY-2018, Available at : http://www.jetir.org/papers/JETIR1903G99.pdf