Two field experiments were conducted at the experimental farm Agriculture Research Station, Desert Research Center, at El-Qantara, North Sinai Governorate, Egypt, during 2015/2016 and 2016/2017 seasons, to investigate the effect of three seeding rates (400, 500 and 600 seeds/m2), three belcocel rates (sprayed plants by tap water, belcocel at a rate of 750 cm3/fed once added and 375 cm3 twice added) and four nitrogen fertilizer rates (0, 70, 90 and 110 kg N/fed) on yield and yield components of wheat . A split- split plot design with three replications was used. Sowing wheat plants at seeding rate of 600 seeds/m2 gave the highest number of spikes/m2, spike length, number of grains/spike, grain yield/feddan and straw yield/feddan as compared with other seeding rates in both seasons, as well as harvest index in first season. Spraying wheat plant with belcocel at the rate of 375 cm3/feddan twice at 21 and 40 days from sowing date gave the highest values of number of spikes/m2, spike length, number of grains/spike, 1000 grains weight, grain yield/feddan, straw yield/feddan and harvest index in both seasons .Increasing nitrogen fertilizer up to 90 kg N/feddan significantly increased number of spike/m2, spike length, number of grains/spike,1000 grain weight, grain yield/feddan, strew yield/feddan, harvest index, in both seasons. Sowing wheat plants with seeding rate of 600 seeds/m2, sprayed by belcocel twice at the rate of 375 cm3/feddan and fertilized by nitrogen at the rate of 90 kg N/feddan gave the highest number of spikes/m2, spike length, number of grains/spike, grain yield/feddan, straw yield/feddan, harvest index as compared with all other treatments in both seasons.
Two field experiments were conducted at the experimental farm Agriculture Research Station, Desert Research Center, at El-Qantara, North Sinai Governorate, Egypt, during 2015/2016 and 2016/2017 seasons, to investigate the effect of three seeding rates (400, 500 and 600 seeds/m2), three belcocel rates (sprayed plants by tap water, belcocel at a rate of 750 cm3/fed once added and 375 cm3 twice added) and four nitrogen fertilizer rates (0, 70, 90 and 110 kg N/fed) on yield and yield components of wheat . A split- split plot design with three replications was used. Sowing wheat plants at seeding rate of 600 seeds/m2 gave the highest number of spikes/m2, spike length, number of grains/spike, grain yield/feddan and straw yield/feddan as compared with other seeding rates in both seasons, as well as harvest index in first season. Spraying wheat plant with belcocel at the rate of 375 cm3/feddan twice at 21 and 40 days from sowing date gave the highest values of number of spikes/m2, spike length, number of grains/spike, 1000 grains weight, grain yield/feddan, straw yield/feddan and harvest index in both seasons .Increasing nitrogen fertilizer up to 90 kg N/feddan significantly increased number of spike/m2, spike length, number of grains/spike,1000 grain weight, grain yield/feddan, strew yield/feddan, harvest index, in both seasons. Sowing wheat plants with seeding rate of 600 seeds/m2, sprayed by belcocel twice at the rate of 375 cm3/feddan and fertilized by nitrogen at the rate of 90 kg N/feddan gave the highest number of spikes/m2, spike length, number of grains/spike, grain yield/feddan, straw yield/feddan, harvest index as compared with all other treatments in both seasons.