Effect of different level of N, P and K on growth, yield and soil status of Guava under meadow orchard system

The present investigation “Standardization of N, P and K dose for meadow orchard system in guava” was carried out to evaluate effects of different doses of N, P and K on the growth, flowering, yield and quality parameters of Guava variety L-49 at Fruit Research Station, Lal Baug, CoH, JAU, Junagadh, during the years 2022-23 and 2023-24. 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 maximum plant height and maximum stem girth were recorded with treatment N3, P2 and K2. For yield and yield attributing parameters, maximum number of fruits/plant, fruit weight, fruit length, fruit diameter, yield/plant was recorded in treatment N3, P2 and K2. For soil nutrient status the highest available nitrogen in the soil was observed with the treatment N3. Highest available phosphorus (P2O5) in the soil was observed with the treatment P2. Highest available potash (K2O) in the soil was observed with the treatment K3. The interaction effect of nitrogen, phosphorus and potash showed that maximum plant height and stem girth (cm) was observed in N3P2. Maximum, number of fruits/plant, fruit weight, and yield/plant were observed in N3K2.