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.