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A Correlation Study of different Fertigation Doses and Foliar Sprays on Yield of Papaya Variety Surya

Author: Karishma Sebastian, Bindu B. and Sajitha Rani T.

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Abstract

A field experiment on papaya variety Surya with different doses of fertigation and micronutrient foliar sprays was conducted during the period 2018 – 2020 at Instructional Farm, College of Agriculture, Vellayani, Thiruvananthapuram. The experiment was laid out in randomised block design with combination of four fertigation doses of 75%, 100%, 125% and 150% RDF of N and K and three foliar sprays (1% 19:19:19, 0.5% ZnSO4 + 0.3% borax and water spray) which where compared with soil application of recommended dose of NPK (control 1) and soil application of NPK plant-1 year-1 based on soil test data as organic manures as combination of FYM, poultry manure and vermicompost in the ratio of 2:1:1 (control 2). The correlation coefficients indicate the presence of inherent association between various characters under study. The study revealed that the number of fruits per plant had very highly positive, significant correlation and very dependable relationship with yield (r=0.991), plant height (r=0.976), plant girth (r=0.955), number of leaves (r=0.979), leaf area index (r=0.986), fruit set percentage (r=0.990), fruit weight (r=0.974), fruit length (r=0.983), fruit girth (r=0.977) and flesh thickness (r=0.972).

Keywords

Borax, correlation, fertigation, foliar sprays, ZnSO4

Conclusion

The findings of the study revealed that application of 100% RD of N and K through fertigation at weekly interval from one MAP to 20 MAP and foliar sprays of 1.0% 19:19:19 at bimonthly interval starting from 4 MAP to 16 MAP (T4) along with basal application of 850g rock phosphate and 15 kg FYM improved the biometric and yield parameters in papaya variety Surya and can be recommended for commercial papaya cultivation. The correlation analysis revealed a significantly superior and highly positive correlations between various parameters under study.

References

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How to cite this article

Karishma Sebastian, Bindu B. and Sajitha Rani T. (2024). A Correlation Study of different Fertigation Doses and Foliar Sprays on Yield of Papaya Variety Surya. Biological Forum – An International Journal, 16(1): 53-58.