Effect of nitrogen on leaf mineral nutrient status, growth and fruiting in peach

Abstract

The highest leaf N was noted where maximum N was applied. However, every higher dose resulted in increasing N contents in leaves. A decreasing trend was observed in case of P and K levels with increasing doses of N. In case of mi-cronutrients, the levels of Zn and Mn indicated fairly positive correlation with the increasing levels of N. There were fluctuating results in case of Fe, B and Co. Tree height, spread, trunk circumference, flowering intensity, fruit set, fruit weight and fruit yield were found to be directly associated with the N content in leaves. Thus 450 g N and 200 g each of P2O5 and K2O/tree to 5-year-old onwards trees is recommended as it gives optimum status of nutrients in leaves. These doses are good for tree height, spread, flowering, fruit set and fruit yield.