International Journal of Agricultural Sciences

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Effect of Different Nitrogen Levels Through Neem Coated Urea and Calcium Sprays on Leaf and Soil NPK and Ca Status and Phytotoxicity in Peach


Affiliations
1 Krishi Vigyan Kendra (ICAR-VPKAS), Kafligair, Bageshwar (Uttarakhand), India
2 Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar, U.S. Nagar (Uttarakhand), India
3 ICAR- VPKAS, Almora (Uttarakhand), India
     

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A two year investigation was conducted at Krishi Vigyan Kendra (ICAR- VPKAS), Kafligair- Bageshwar during 2016 and 2017 in peach cv. RED JUNE with ten treatments viz., 375 g N per tree + 0.5 % CaCl2 (T1), 375 g N tree-1 + 1.0 % CaCl2 (T2), 375 g N tree-1 + 1.5 % CaCl2 (T3), 500 g N tree-1 + 0.5 % CaCl2 (T4), 500 g N tree-1 + 1.0 % CaCl2 (T5), 500 g N tree-1 + 1.5 % CaCl2 (T6), 625 g N tree-1 + 0.5 % CaCl2 (T7), 625 g N tree-1 + 1.0 % CaCl2 (T8), 625 g N tree-1 + 1.5 % CaCl2 (T9), 500g N tree-1 + Water spray (T10 control). The source of nitrogen fertilization was neem coated urea. The experimental findings revealed that maximum leaf nitrogen content was estimated under T9 (3.721% and 3.838% in 2016 and 2017, respectively), while maximum leaf phosphorus content was estimated under T1 (0.450%) in first and T3 (0.456%) in second year. During both the years, the maximum leaf potassium content was estimated under T2 (2.096% and 2.110% in 2016 and 2017, respectively). The highest leaf calcium content was estimated under T3 (1.735% in 2016 and 1.744% in 2017). Irrespective of nitrogen fertilization levels, highest calcium chloride concentration (1.5%) resulted in phytotoxicity which was evident by marginal leaf scorching. Significant differences for available soil nitrogen were found, while other studied nutrients did not differ significantly.

Keywords

Nitrogen Levels, Neem Coated Urea, Calcium Chloride, Leaf, Soil Nutrient Status.
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  • Effect of Different Nitrogen Levels Through Neem Coated Urea and Calcium Sprays on Leaf and Soil NPK and Ca Status and Phytotoxicity in Peach

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Authors

Kamal K. Pande
Krishi Vigyan Kendra (ICAR-VPKAS), Kafligair, Bageshwar (Uttarakhand), India
D. C. Dimri
Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar, U.S. Nagar (Uttarakhand), India
Sanjay Kumar
ICAR- VPKAS, Almora (Uttarakhand), India

Abstract


A two year investigation was conducted at Krishi Vigyan Kendra (ICAR- VPKAS), Kafligair- Bageshwar during 2016 and 2017 in peach cv. RED JUNE with ten treatments viz., 375 g N per tree + 0.5 % CaCl2 (T1), 375 g N tree-1 + 1.0 % CaCl2 (T2), 375 g N tree-1 + 1.5 % CaCl2 (T3), 500 g N tree-1 + 0.5 % CaCl2 (T4), 500 g N tree-1 + 1.0 % CaCl2 (T5), 500 g N tree-1 + 1.5 % CaCl2 (T6), 625 g N tree-1 + 0.5 % CaCl2 (T7), 625 g N tree-1 + 1.0 % CaCl2 (T8), 625 g N tree-1 + 1.5 % CaCl2 (T9), 500g N tree-1 + Water spray (T10 control). The source of nitrogen fertilization was neem coated urea. The experimental findings revealed that maximum leaf nitrogen content was estimated under T9 (3.721% and 3.838% in 2016 and 2017, respectively), while maximum leaf phosphorus content was estimated under T1 (0.450%) in first and T3 (0.456%) in second year. During both the years, the maximum leaf potassium content was estimated under T2 (2.096% and 2.110% in 2016 and 2017, respectively). The highest leaf calcium content was estimated under T3 (1.735% in 2016 and 1.744% in 2017). Irrespective of nitrogen fertilization levels, highest calcium chloride concentration (1.5%) resulted in phytotoxicity which was evident by marginal leaf scorching. Significant differences for available soil nitrogen were found, while other studied nutrients did not differ significantly.

Keywords


Nitrogen Levels, Neem Coated Urea, Calcium Chloride, Leaf, Soil Nutrient Status.

References