Kalaivanan, D., Selvakumar, G., & Hebbar, S. S. . . (2020). Effects of varying N, P and K concentrations on growth, biomass, yield and nutritional quality of zucchini squash grown under open and polyhouse soilless culture. Indian Journal of Horticulture, 77(03), 496–502. https://doi.org/10.5958/0974-0112.2020.00071.7