A pot experiment was conducted at the greenhouse of Fac. of Agric., MansouraUniversity during the successive winter seasons of 2009/ 2010. This work aimed to evaluate the effect of different nitrogen levels in the presence of (Na -Molybdate (10ppm), boron (50ppm) , Na -salsalate (10ppm) and Ascorbic acid (250ppm)) asfoliar application on yield and chemical composition of lettuce (lactuca sativa, L., CV, balady) vegetables. As fore soil used in this investigation ; 24 treatments were arranged in a split- split block design with three replicates, which were the simple possible combination among two sources of N fertilizers (ammonium nitrate 33.5%N and ammonium sulfate 20.5%N ) three levels of N application (100, 125 % and 150%) of recommended doses(RD) and four treatments of foliar spraying (Na -Molybdate (10ppm), boron (50ppm) , Na -salsalate (10ppm) and Ascorbic acid (250ppm))) The obtained results can be summarized as follow:
Spraying of micronutrients and antioxidants either in a single form or in combination with mineral fertilization led to a positive effect on the growth and yield of lettuce plants.
The accumulation of nitrate and nitrite in lettuce fresh leaves increased as the level of mineral fertilizers increased. Foliar (Na -Molybdate (10ppm), boron (50ppm) , Na -salsalate (10ppm) and Ascorbic acid (250ppm)) resulted in pronounces decrease in the values of NO3-N and NO2-N in lettuce plant.
Under the same condition of this investigation, it could be recommended that; soil addition of N fertilizers at the rate of 100% from the recommended doses for lettuce plant coupled with foliar application of Molybdate-Na is considered as the optimum treatment for producing a safe yield of lettuce plant.
Taha, A. A., Mosa, A. A., & Ahmed, S. A. (2011). ROLE OF MICRONUTRIENTS AND ANTIOXIDANTS APPLICATION IN STIMULATING GROWTH AND YIELD OF FRESH EDIBLE VEGETABLES. Journal of Soil Sciences and Agricultural Engineering, 2(2), 251-263. doi: 10.21608/jssae.2011.55430
MLA
A. A. Taha; A. A. Mosa; Shahd A. Ahmed. "ROLE OF MICRONUTRIENTS AND ANTIOXIDANTS APPLICATION IN STIMULATING GROWTH AND YIELD OF FRESH EDIBLE VEGETABLES", Journal of Soil Sciences and Agricultural Engineering, 2, 2, 2011, 251-263. doi: 10.21608/jssae.2011.55430
HARVARD
Taha, A. A., Mosa, A. A., Ahmed, S. A. (2011). 'ROLE OF MICRONUTRIENTS AND ANTIOXIDANTS APPLICATION IN STIMULATING GROWTH AND YIELD OF FRESH EDIBLE VEGETABLES', Journal of Soil Sciences and Agricultural Engineering, 2(2), pp. 251-263. doi: 10.21608/jssae.2011.55430
VANCOUVER
Taha, A. A., Mosa, A. A., Ahmed, S. A. ROLE OF MICRONUTRIENTS AND ANTIOXIDANTS APPLICATION IN STIMULATING GROWTH AND YIELD OF FRESH EDIBLE VEGETABLES. Journal of Soil Sciences and Agricultural Engineering, 2011; 2(2): 251-263. doi: 10.21608/jssae.2011.55430
)
View on SCiNiTO