Incorporação de materiais vegetais associada à solarização e produtos biológicos na sobrevivência de fusarium solani e no desenvolvimento do meloeiro.

Abstract

The objective of this work was to evaluate the effect of solarization associated with the incorporation of plant materials and biological products on the survival of F. solani and on the melon development. The experiment was conducted in a greenhouse at the Agricultural Center of the Federal University of the Semi-Arid-UFERSA, in the city of Mossoró-RN with melon plants, 'Goldex' cultivar. Two identical experiments were carried out at different times. A completely randomized design with nine treatments and five replications was used: Incorporation of cabbage (Brassica oleracea var. Capitata) associated with soil solarization; Incorporation of castor bean (Ricinus communis L.) associated with soil solarization; ALD-18® commercial product (Fertiliza Chemical); Commercial products Compost Aid® + Active® (Alltech); Incorporation of cabbage (Brassica oleracea var. Capitata) associated with soil solarization and commercial product ALD-18® (Fertiliza Chemical); Incorporation of cabbage (Brassica oleracea var. Capitata) associated with soil solarization and commercial products Compost Aid® + Active® (Alltech); Incorporation of castor bean (Ricinus communis L.) associated with soil solarization and commercial product ALD-18® (Fertiliza Chemical); Incorporation of castor bean (Ricinus communis L.) associated with soil solarization and commercial products Compost Aid® + Active® (Altech Group); Solo (witness). The survival of the fungus at 50 days after transplanting (DAT) of the seedlings and growth variables (stem diameter, plant height and leaf number at 20, 30 and 40 DAT of the seedlings were evaluated. At the end of the experiment the fresh and dry mass of the aerial parts and the roots of the melon plants were analyzed. The treatment that provided the lowest survival of F. solani was R + PF + S, where cabbage was associated with the simulation of the soil solarization and application of the ALD-18® product. The association of the techniques of green fertilization, mainly castor bean, with the incorporation of commercial biological products and solarization allowed better development of melon plants in all evaluated periods. The soil solarization + the use of biological products ALD-18® (Fertiliza Chemical) and Compost Aid® + Active® (Alltech Group), without the incorporation of vegetal materials, did not reduce the survival of F. solani nor favor the development of the melon.