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|Gopu Balraj, T N Balamohan, P Soman and P Jeyakumar|
|A field experiment was conducted on mango ( Mangifera indica L.) cv. Alphonso under Ultra High Density Planting (UHDP) to study the changes in the nutrient composition in leaves after pruning. Leaf nutrients i.e., N, P and K analysed at different stages of plant growth varied significantly due to pruning. The highest nitrogen content was registered by T 1 at vegetative stage, T 5 (50% removal of past seasons growth and tipping) at flowering stage and T 2 (Light pruning) at harvest stage. The highest phosphorus content was observed at vegetative stage by T 1 , at flowering by T 2 (Light pruning) and at harvest stage by T 4 (Heavy pruning). The highest potassium content was observed at vegetative stage by T 5 at flowering by T 4 and at harvest stage by T 3 (Moderate pruning). The C:N ratio was the maximum in control plants at vegetative, flowering stages and at harvest stage, the treatment T 6 (Total removal of past seasons growth) recorded the maximum C:N ratio in leaves and shoots.|
Gopu Balraj is doing his Ph.D. (Fruit Science) in Horticultural College and Research Institute, Tamil Nadu Agricultural University, India. He is presently working on crop regulation in mango under Ultra High Density Planting.
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