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A field experiment was conducted at Instructional Farm, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala from 2018 -2020 to standardize the nutrient level for yield improvement through fertigation and foliar nutrition in papaya cv. Surya. The experiment was carried out in randomised block design with four fertigation doses (75%, 100%, 125% and 150% recommended dose (RD) of N and K), three foliar sprays [19:19:19 (1.0%) (at bimonthly interval starting from 4 month after planting (MAP) to 16 MAP), (ZnSo4 (0.5%) and Borax (0.3%) (4 th , 8 th , 12 th and 16 th MAP)) and water spray (at bimonthly interval starting from 4 MAP to 16 MAP)], and two control treatments (KAU POP and organic POP (100% of RD of NPK as organic) replicated thrice. Application of 100% RD of N and K through fertigation at weekly interval from one MAP to 20 MAP with foliar application of 19:19:19 (1%) at bimonthly interval starting from 4 MAP to 16 MAP significantly improved the plant height, plant girth, number of leaves, number of fruits per plant, fruit weight and yield per plant in papaya cv. Surya. Also it was found that application of 100% RD of N and K through fertigation at weekly interval from one MAP to 20 MAP with foliar application of ZnSo4 (0.5%) and Borax (0.3%) at 4 th , 8 th , 12 th and 16 th MAP was on par with the above treatment on number of fruits per plant, fruit weight and yield per plant in papaya cv. Surya.

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