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O feijao-caupi responde bem a adubacao orgânica, aumentando sua produtividade quando o solo e adubado com estercos de animais, compostos orgânicos, humus de minhoca e biofertilizante. Assim, objetivou-se avaliar o acumulo de massa seca do feijao-caupi em funcao de diferentes quantidades de humus de minhoca incorporadas ao solo e biofertilizantes orgânicos nas condicoes do semiarido nordestino. O experimento foi conduzido em condicoes de campo, na Universidade Estadual da Paraiba, em delineamento experimental em blocos completos casualizados, no esquema fatorial 4 x 2, com 5 repeticoes. O primeiro fator correspondeu a quatro quantidades de humus de minhoca incorporadas ao solo (0,0; 0,5; 1,0 e 1,5 kg m -1 ) e o segundo fator, duas adubacoes via foliar na forma liquida (biofertilizante comum e humus de minhoca). Avaliaram-se os rendimentos de massa seca da: folha, caule, raiz, parte aera, total e da relacao parte/aerea. Nao houve interacao significativa entre os fatores tratamentos testados para nenhuma das caracteristicas avaliadas. O maior acumulo de massa seca do feijao-caupi foi registrado com a incorporacao ao solo de 0,14 Kg m -1 de humus de minhoca. Em termos de valores absolutos, o biofertilizante comum proporcionou maior massa seca do feijao-caupi. Dry matter accumulation in cowpea under organic fertilization Abstract : Cowpea responds well to organic fertilization, increasing its productivity when the soil is fertilized with animal manures, organic compounds, earthworm humus and biofertilizer. Thus, the objective of this research was to evaluate the dry mass accumulation of cowpea as a function of different amounts of earthworm humus incorporated in the soil and organic biofertilizers under the conditions of the northeastern semi-arid region. The experiment was conducted under field conditions, at Universidade Estaudal da Paraiba, in a randomized complete block design, in the 4 x 2 factorial scheme, with 5 replications. The first factor corresponded to four quantities of earthworm humus (0.0, 0.5, 1.0 and 1.5 kg m -1 ) and the second factor, two leaf fertilization in the liquid form (common biofertilizer and earthworm humus). The dry mass yields of leaf, stem, root, aera, total and part/air ratio were evaluated. There was no significant interaction between the factors treatments tested for any of the characteristics evaluated. The highest dry mass accumulation of cowpea was recorded with soil incorporation of 0.14 kg m -1 of worm humus. In terms of absolute values, the common biofertilizer provided a higher dry mass of cowpea.

Acúmulo de massa seca em feijão-caupi sob adubação orgânica