Agronomic Performance and Fruit Quality of Yellow Melon Fertilized With Doses of Nitrogen and Potassium

Abstract

The objective of this study was to evaluate the assimilated contents of mineral elements, yield characteristics and fruit quality of ‘Goldex’ yellow melon fertigated with different doses of nitrogen (N) and potassium (K) in two years of cultivation in the region of Apodi Plateau-CE. The design was randomized blocks in a 4x3 factorial scheme with four N doses (0%, 50%, 100%, 150% of the recommended dose) and three K doses (0%, 100%, 150% of the recommended dose). In the shoots of the melon plant, the highest levels of N (N Fert.) and K (K Fert.) fertilization promoted an increase in the assimilated N content up to 48 DAT and a reduction in the assimilated K content at the end of the cycle (62 DAT). The maximum shoot dry mass production was 3.23 t ha−1 with a fertilization of 150 and 100 kg ha−1 of N and K, respectively. The average marketable fruit yield obtained in the two years of cultivation was 34.68 t ha−1, reaching a maximum value of 40.28 t ha−1 under 150 kg ha−1 N and K fertilization. Total soluble solids increased as a function of the increase in N Fert. and K Fert., with a maximum value of 8.07 °Brix. The models indicated that the K Fert. factor was decisive in the increase of this variable. In future studies it is necessary to increase the concentrations of the two factors in order to optimize the maximum viability of yield and °Brix.

Efeito da urina de vaca no desenvolvimento e estado nutricional do rabanete ‘Vip Crimson’

“…A maior massa seca encontrada nas plantas adubadas com biofertilizante e fertilizante mineral está ligada aos nutrientes, principalmente o nitrogênio (MOREIRA et al, 2022).…”

Random amplified polymorphic DNA marker molecular and physiological characteristics in tomato plants induced by chemical mutagen

“…The addition of potassium up to a dose of 5 g in plants mutated with 0.3% and 0.5% EMS tended to increase the brix value of tomatoes. The addition of potassium had a greater effect on the variable value of brix or total dissolved solids (TSS) and gave a significant response [50]. The increase in sugar proved the significance of potassium on the process of biosynthesis and transfer of sugars throughout the plant body [51].…”