SALINIDADE DA ÁGUA, FONTES DE NITROGÊNIO E BIOFERTILIZANTE BOVINO, NA FORMAÇÃO DE MUDAS DE JACA MOLE

Abstract

The jackfruit is an exotic, species from India and introduced in Brazil during the colonial period. Scientific information about their responses to salinity are still uncommon in the Brazilian and world literature. In this sense, the objective of this study was to evaluate the effects of electrical conductivity of irrigation water, nitrogen fertilizer and application of liquid cattle manure fermented in the formation of Artocarpus heterophyllus Lam seedlings diversity mole. The work was carried out on the screened greenhouse Universidade Federal da Paraíba, Areia county, Paraíba State, Brazil and treatments were arranged in a randomized block design using the factorial 5 x 3 x 2, corresponding to the levels of electrical conductivity of irrigation water (0.3; 1.0; 2.0; 3.0 and 4.0 dS m-1), nitrogen fertilization regarding absence and 150 mg dm-3 nitrogen in form of ammonia sulphate and urea in soil with and without fermented liquid bovine manure or bovine common biofertilizer on the substrate surface on the day of sowing and 30 days after seedling emergence. The variables analyzed were: electrical conductivity of aqueous extract 1:1 hydrogen potential (soil suspension/water), stem diameter, plant height, leaf number, leaf area, specific leaf area, leaf area ratio, dry mass of root, shoot and total dry matter, Dickson quality index and indices of chlorophyll a, b and total at 85 days after sowing. Increasing the salt concentration of irrigation water increased the salinity of the substrate and compromised biometric growth, biomass production and capacity clorofilática jacket