Effect of rejuvenation pruning and nitrogen levels on leaf nutrient status of old and senile apricot (Prunus armeniaca L.) cv. new castle trees

The present investigation was carried out in old and senile apricot trees in the experimental orchard of the Department of Fruit Science, UHF, Nauni, Solan during 2011 to 2014. The experiment comprised of factorial combination of pruning severities (20%, 40% and 60% heading back of main scaffolds) and three levels of nitrogen dose (500, 625 and 750 g/tree). These experimental trees were given rejuvenation treatments for the first time in 2011.