Effect of different level of N, P and K on flowering, yield and quality of Guava under meadow orchard system

Abstract

The present investigation carried out to evaluate effects of doses of N, P and K on the growth, flowering, yield and fruit quality of Guava variety L-49 at Fruit Research Station, Lalbaug, CoH, JAU, Junagadh, during the years 2022-23 and 2023-24 in meadow orchard. The experiment was laid out in RBD with Factorial concept consisting three levels of nitrogen N1:30, N2:60 and N3:90 g/plant, two levels of phosphorus P1:15 and P2:30 g/plant and three levels of potash K1:15, K2:30 and K3:45 g/plant. The results revealed that the minimum days to first flowering, days from flowering to fruit set and days to first harvest were recorded with treatment N2, P2 and K2, while highest number of flowers/shoot was recorded with N3, P2 and K2. For yield and yield attributing parameters, the highest fruit set, number of fruits/shoot, fruit weight, yield/plant was recorded in treatment N3, P2 and K2. For quality parameters, maximum TSS, ascorbic acid content and total sugar was recorded in N2, P2 and K2. The interaction effect of nitrogen, phosphorus and potash showed that maximum fruit weight and yield (kg/plant) were observed in N3K2. While, maximum TSS and Total Sugar were found in in N2K2.