Influence of Pruning Intensity and Pruning Frequency on Reproductive Attributes and Leaf C/N Ratio in Sardar Guava

摘要

Investigations were carried out in the New Orchard of Department of Horticulture, Punjab Agricultural University, Ludhiana. Pruning intensities consisted of removal of shoot tip to 0, 2nd, 4th, 6th, 8th and 10th node. Pruning frequency comprised regular and alternate year pruning. The results of investigation revealed that duration of flowering exhibited a significant decline with the increased severity of pruning. Regular pruning significantly shortened the duration of flowering. However, the highest fruit yield was obtained in trees subjected to 6-node pruning intensity. Interaction between pruning intensity and pruning frequency showed that 6-node regular pruning treatment emerged as the best treatment with respect to fruit yield. There was a significant increase in leaf C/N ratio with the enhanced severity of pruning during both the years. Regular pruning surpassed alternate pruning by registering superior C/N ratio. The interaction effect of pruning intensity and pruning frequency was found significant and regular pruning to 10 nodes recorded the highest C/N ratio.