Optimization of Water Depletion Level and Nutrient Requirement in Drip-Irrigated High Dense Kinnow Orchard
Optimization of Water Depletion Level and Nutrient Requirement in Drip-Irrigated High Dense Kinnow Orchard
Habib Ullah Habib1, Malik Muhammad Akram2, Mujahid Ali1*, Tahir Mehmood3, Muhammad Manzoor4, Maqsood Ahmad3, Hasseb Ahsan1, Muhammad Mazhar Iqbal3, Malik Abdul Rehman5, Muhammad Mohsan1 and Ahsan Mohyo ud Din6
ABSTRACT
Citrus can behave differently at different water depletion levels, which can be evaluated by various growth attributes. The study aimed to optimize water depletion level and nutrient requirement in drip-irrigated high dense kinnow orchard. To study such changes present study was performed with kinnow under different water depletion levels and fertilizer levels. The research was conducted on Water Management Research Farm, Renala Khurd, Okara. Kinnow was given two water depletion levels 10% and 15% along with four NPK fertilizer levels 100%, 75%, 50%, 75% of percent recommended dose of fertilizer) of NPK were studied by using soluble fertilizers. Fertigation was applied through drip irrigation according to the schedule derived through Crop Watt. Kinnow plants showed significant results regarding plant canopy, plant height, the average weight of fruits, the weight of large size fruits, the weight of medium size, the weight of small size fruits, number of fruits per plant, number of small fruits per plant, number of medium-size fruits per plant, and number of large size fruits per plant. The maximum number of medium-size fruits (15%) was observed at 15% water depletion level with a 50% NPK level. However, the minimum number of medium-size fruits (11%) were seen at 10% water depletion level with 75% of recommended NPK. The maximum number of large-size fruits (14%) was observed at 15% water depletion level with 75% and 100% NPK level at par with the number of fruits (14%) at 10% water depletion level with 50% NPK and 100% NPK of recommended fertilizer level. However, the minimum number of large-size fruits (9%) was seen at 10% water depletion level with 25% of recommended NPK. 10% and 15% water depletion levels and 75% and 100% of recommended NPK performed better than other treatments under consideration.
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