Crescimento, produtividade e qualidade de raízes de rabanete cultivadas sob diferentes fontes e doses de adubos orgânicos
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Data
2006-03-01
Autores
Costa, Caciana C [UNESP]
Oliveira, Cristina D de [UNESP]
Silva, César José da [UNESP]
Timossi, Paulo César [UNESP]
Leite, Izabel Cristina [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Brasileira de Horticultura
Resumo
Avaliou-se o efeito da aplicação de doses de húmus de minhoca e de esterco bovino no crescimento de rabanete (Raphanus sativus L.), cultivar Crimson Giant, de agosto a setembro de 2002. Fez-se semeadura direta do rabanete com desbaste nove dias após, para adequar ao espaçamento de 0,20 x 0,08 m. Utilizou-se delineamento de blocos ao acaso, com sete tratamentos (15; 30 e 45 t ha-1 de húmus de minhoca e esterco bovino curtido, além do controle sem adição de fertilizante), em três repetições. Houve maior acúmulo de massa seca nas folhas em relação aos demais órgãos da planta, com acúmulo contínuo até os 13 dias após a semeadura, com posterior redução, quando ocorreu o desenvolvimento da raiz. As doses e fontes de adubos orgânicos aplicados pouco influenciaram no crescimento e nas produtividades total e comercial de raízes. O húmus de minhoca apresentou a menor porcentagem de raízes rachadas e isoporizadas nas doses de 9,2 e 20,4 t ha-1, respectivamente. A dose de esterco bovino, de 21,3 t ha-1 promoveu a maior porcentagem de raízes rachadas e a de 45 t ha-1 proporcionou redução em relação à de 15 t ha-1.
This experiment was carried out in Jaboticabal, São Paulo State, Brazil, between August and September 2002, to evaluate the effect of different vermicompost doses and cattle manure on growth, yield and quality of radish roots (Raphanus sativus L.), cultivar Crimson Giant. Direct sowing of the radish was followed by thinning nine days after, adjusting the spacing to 0.20 x 0.08 m. A randomized blocks experimental design was used, with seven treatments (15; 30 and 45 t ha-1 of earthworm humus or cattle manure, and a control without fertilizer addition), in three replications. There was higher dry mass accumulation in the leaves than in other organs, with continuous accumulation until 13 days after sowing, with further reduction, when the root development occurred. Doses and sources of organic fertilization slightly influenced growth, total productivity and quality of commercial roots. Earthworm humus reduced the percentage of cracked and spongeous roots in the doses of 9.2 and 20.4 t ha-1, respectively. Doses of 21.3 t ha-1 of cattle manure promoted the highest percentage of cracked roots, while the dose of 45 t ha-1 reduced this percentage, when compared to the use of 15 t ha-1.
This experiment was carried out in Jaboticabal, São Paulo State, Brazil, between August and September 2002, to evaluate the effect of different vermicompost doses and cattle manure on growth, yield and quality of radish roots (Raphanus sativus L.), cultivar Crimson Giant. Direct sowing of the radish was followed by thinning nine days after, adjusting the spacing to 0.20 x 0.08 m. A randomized blocks experimental design was used, with seven treatments (15; 30 and 45 t ha-1 of earthworm humus or cattle manure, and a control without fertilizer addition), in three replications. There was higher dry mass accumulation in the leaves than in other organs, with continuous accumulation until 13 days after sowing, with further reduction, when the root development occurred. Doses and sources of organic fertilization slightly influenced growth, total productivity and quality of commercial roots. Earthworm humus reduced the percentage of cracked and spongeous roots in the doses of 9.2 and 20.4 t ha-1, respectively. Doses of 21.3 t ha-1 of cattle manure promoted the highest percentage of cracked roots, while the dose of 45 t ha-1 reduced this percentage, when compared to the use of 15 t ha-1.
Descrição
Palavras-chave
Raphanus sativus L., organic fertilization, Growth, production, physiologic disturbances, Raphanus sativus L., Adubação orgânica, Desenvolvimento, Produção, Distúrbio fisiológico
Como citar
Horticultura Brasileira. Associação Brasileira de Horticultura, v. 24, n. 1, p. 118-122, 2006.