Effect of graded level of nitrogen and phosphorus on yield, quality and total uptake of calendula

Abstract

This research was conducted to investigate the effect of graded level of N and P on yield, quality and uptake of calendula, during winter season at Horticulture Section, College of Agriculture, Nagpur. Using different levels and combination of nitrogen and phosphorus for evaluate the yield, quality and uptake of calendula. The Experiment was laid out in factorial in randomized block design with sixteen treatments (each treatment with 3 replications). The results of present investigation revealed that, application of 100 kg ha-1 N and 50 kg ha-1 P produced significantly maximum shelf life, vase life of flower and oil content in flower with respect to quality parameters which were at par with the results obtained with the application of 125 kg ha-1 N and 75 kg ha-1 P. Total uptake of nitrogen, phosphorus, potassium in flower and plant of calendula maximum in treatment combination N3P3 i.e. 125 kg ha-1 N and 75 kg ha-1 P. The interaction effects revealed that, they were significant in respect to number of flowers plant-1, flower yield q ha-1, oil content in flower and total NPK uptake of calendula. For these parameters, the best treatment combination was 100 kg N kg ha-1 + 50 P kg ha-1 and 125 N kg ha-1 + 75 P kg ha-1.