Análise de crescimento e produção de três variedades de mandioca (manihot esculenta, Crantz) consorciadas com feijão de porco (canavalia ensiformis DC)

Abstract

It was accomplished a study concern growth analyzing and production of three varieties of cassava((Manihot esculenta, Crantz)planted in arranging with pig‟s beans (Canavalia ensiformis, DC), in the physic base of Technologic Nuclei of Engineer Rural, of the Agronomy course from University State of Maranhão, in the city of São Luís, located at 44 18‟ W longitude and 20 30‟ S latitude, in a soil classified as ARGISSOIL RED-YELLOW Dystrophic Tb Arenic A moderate, texture middle sand phase tropical forest dicótilo palmacea, according Brazilian System Classification Soil. The aim it was analyze the growth and production of three Manihots varieties, arranged in two systems of planting, the monocultive traditional system and the arranged with Canavalia ensiformis, to get the knowledge of the nature of inners controls of cultivars about the interactions plant-soilatmosphere. The area leaf index (AIF), for both varieties as long systems, presented behavior equals, however, until 180 days after planting, the value increased. When gets 210 days after planting decreased. The traditional systems it was the best significant effect to this parameter, suggesting the occurrence of interespecífic competition for the arranged planting. The assimilatory liquid tax (ALT) presented significance effect to the Manihots “Pão” in the traditional system. The Leaf Area Reason (LAR) expressed significant effect for the interections, being that Manihot „Pão” and Manihot “Rosa” doesn‟t presented differences, in the interaction variety X arrange planting, moreover the interaction system planting relationship the variety, it was verified the best significance in the traditional planting, variety independently. The production of tuberoses roots it wasn‟t influenced by the varieties neither by the systems planting adopted. This way, it could make a recommend of planting of both varieties, as traditional system as arranged planting. To the production biomass aerial (feeding), it could make a suggestion about the use of Manihot “Pão” for has presented significance answer to area leaf index, that have a strictly relationship with the best leaf area. This way could have more green mass for the production in use of feeding animal.