EFFECT OF GRADED LEVELS OF NITROGEN, PHOSPHORUS AND POTASSIUM ON GROWTH. FRUITING AND YIELD OF BOTTLE GOURD (Lagenaria siceraria Stand. L.) CV. SAMRAT.
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Date
1993-06-30
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MAHATMA PHULE KRISHI VIDYAPEETH RAHURI. DIST. AHMEDNAGAR. MAHARASHTRA.
Abstract
The present investigation was conducted during the summer season of 1992 at the Instructional-cum-Research orchard, Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar [Maharashtra] with a view to find out the optimum dose of fertilizers for recently released bottle gourd cv. "Samrat' under local conditions. The fertilizer treatments consisted of four levels [0, 50, 100, 150 kg per hectare] of nitrogen and three levels [0,50,100 kg per hectare] each of phosphorus and potassium. Thus, there were 36 treatment combinations replicated thrice in factorial Randomised Block Design. The results obtained in respect of vine growth, fruiting and yield response as influenced by various treatments revealed that the increase in growth with different levels of N was not linear. However, all the three levels were significantly superior to control. The lower level of phosphorus and potassium [50 kg/ha each] significantly increased the growth of vine. Comparatively lesser growth was observed at higher levels than that observed with lower levels. The yield attributing characters such as number of male and female flowers, size, weight, volume and rind thickness of fruit were significantly increased with higher levels of nitrogen application in comparisoin with no applicaiton. The maximum number of fruits and highest total yield of 49.853 tonnes/ha was obtained with 50 kg each of phosphorus and potassium per hectare. There was reduction in all yield attributing characters with higher [100 kg/ha] dose of both phosphours and potassium. The maximum fruit yield [49.853 tonne/ha.] was recorded when N,P and K were applied in combinaiton of 150:50:50 kg/ha respectivley. The fruit maturity was delayed with nitrogen application while it was slightly reduced at higher level [100 kg/ha] of phosphorous and potassium application. Bottle gourd cv. "Samrat' showed a significantquadratic response to N,P and K fertilization. The optimum dose worked out was a combination of 135 kg N, 50 kg P and 58 Kg K/ha under the soil and climatic conditions of Rahuri [Western Maharashtra] for bottle gourd cv. 'Samrat'.
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