Enhancing melon production and quality through the application of 'Lithothamnium'

Abstract

ABSTRACT In Brazil, melon production is distinguished by its superior quality. One of the major challenges in this sector lies in the use of fertilizers, particularly due to import dependencies. In this context, Lithothamnium, a seaweed derivative that supplies calcium and magnesium and enhances the physical, chemical, and biological properties of the soil, presents a viable solution. This study aimed to assess the impact of varying doses (whole [W] or fractional [F]), intervals, and application modes of Lithothamnium on melon yield and quality. The experimental investigation was carried out at Fazenda Dina - Dinamarca Industrial Agrícola, located in Mossoró, Brazil. An experimental design consisting of randomized blocks with 11 treatments and four replications was implemented. Melons were harvested 75 days post-sowing. Results revealed no significant differences for most variables as per the Scott Knott test (5% probability). However, noteworthy statistical differences were observed concerning productivity, peel thickness, pulp firmness, pH, and total sugar content. All treatments involving the use of Lithothamnium demonstrated an increase in productivity (25.6 to 29.8 t ha-1) and peel thickness (0.80 to 1.02 cm). In terms of pulp firmness, treatments using Lithothamnium in nanoparticle form and as a concentrated suspension with application times of 10-20-30 and 30-50 exhibited higher values (25.66 to 27.81 N). Except for the micronized powder variant, all Lithothamnium treatments yielded the highest pH values (6.84 to 6.94). Total sugar content was found to be highest in treatments T3, T4, and T5 (11.58%, 12.50%, and 11.78%, respectively).