Effect of Different Nitrogen Fertilizers on Leaf Micronutrients in Apple (Malus domestica Borkh)

Aims: To judge the effect of various nitrogen beginnings on leaf micronutrients of apple in container sophistication studies and field studies.Study Design: The experiment was spent money in a Completely Randomized Design factorial in container studies and in a Randomized Block Design factorial in field studies.Place and Duration of Study: The marijuana culture experiment was completed activity at the exploratory farm of Department of Soil Science and Water Management, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) and field experiment was completed activity at Krishi Vigyan Kendra, Rohru, Shimla (H.P.) and Horticultural Research Station, Seobagh, Kullu (H.P.) in 2016 and 2017.Methodology: Experiments were held of fourteen situations and each treatment was copied three occasions, bearing individual plant under each copy. Calculated amount of fertilizers was added in the soil at appropriate period and leaf samples were composed for decision of leaf micronutrients. Copper (Cu), iron (Fe), manganese (Mn), metallic mineral (Zn) chapters were determined by utilizing nuclear assimilation spectrophotometer and boron (B) was supposed by utilizing Azomethine- H method.Results: In marijuana education studies, Cu was 14.96 and 15.05 ppm, Fe was 188.71 and 194.48 ppm, Zn was 31.52 and 32.51 ppm and 64.83 and 65.09 ppm in 2016 and 2017, individually. The topmost B content was written under urea unique application (35.64 and 35.48 ppm in 2016 and 2017, individually). In field studies, Mn was 76.48 and 78.16 ppm at Seobagh and 83.23 and 85.15 ppm at Rohru, Fe was 218.25 and 225.15 ppm at Seobagh and 235.64 and 247.18 ppm at Rohru, Cu was 16.83 and 17.02 ppm at Seobagh and 17.87 and 18.03 ppm at Rohru, Zn was 39.40 and 40.84 ppm at Seobagh and 39.28 and 41.16 ppm at Rohru in 2016 and 2017, individually. At Seobagh the chief B content in leaves was written under urea unique application (37.87 ppm) in 2016 and under the situation 12:32:16 + calcium nitrate (38.14 ppm) in 2017, while at Rohru topmost B content was under urea unique request (33.56 ppm) in 2016 and under calcium nitrate situation (30.36 ppm) in 2017.Conclusion: Leaf micronutrients (Fe, Cu, Mn, Zn and B) were significantly touched on request of nitrogen fertilizers and were the chief under urea unique request and were found to have a direct connection accompanying the decline in pH of the soils.

Please read full article - https://journalijpss.com/index.php/IJPSS/article/view/2882