Atributos químicos do solo em sistemas de adubação orgânica de café conilon
Data
2013-10
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Editor
Editora UFLA
Resumo
A produção de café conilon em sistemas de manejo orgânico tem aumentado no estado do Espírito Santo, no entanto, informações sobre o impacto desse manejo nas características químicas do solo são poucas e inconclusivas.Objetivou- se, neste trabalho, avaliar o efeito de manejos de adubação orgânica sobre atributos químicos de solo, em agroecossistema de café conilon. Em uma lavoura localizada no município de Linhares-ES, foi montado, experimento em delineamento de blocos casualizados com distribuição fatorial 2 x 2 x 5, com três repetições, sendo os fatores: dois compostos orgânicos; presença e ausência de leguminosa; e cinco proporções de cada composto (0; 25; 50; 75; e 100%) em substituição à adubação mineral recomendada. Cada repetição foi composta por uma parcela de 30 plantas de café, sendo 12 úteis centrais. Os compostos foram: composto 1, preparado com capim- elefante e palha-de-café na proporção 1:1 (v:v); e composto 2, preparado com capim-elefante, palha-de-café e cama-de-frango na proporção 2:1:1 (v:v:v). A leguminosa utilizada foi o feijão-de-porco, semeada nas entrelinhas dos cafeeiros. Com a utilização de 100% do composto 1 e composto 2, o pH atingiu valores de 6,5 e 6,3, respectivamente em relação ao pH 4,8, obtido com a adubação mineral. As médias obtidas para a soma de bases (SB) acompanharam o comportamento das bases trocáveis (Ca, Mg e K) do solo, ou seja, aumentaram de forma linear (p<0,10), com o aumento das proporções dos compostos. A adubação com compostos orgânicos é uma alternativa para melhorar a fertilidade do solo no agroecossistema de café conilon.
The production of Conilon in organic systems has increased in the state of Espírito Santo, however, information on the impact of management on soil chemical characteristics are few and inconclusive. The aim of this study was to evaluate the effect of organic management fertilization on chemical properties of soil in agroecossystem conilon. On a farm in the municipality of Linhares, state of Espirito Santo, was mounted experiment in randomized complete block design with factorial distribution 2 x 2 x 5, with three replications, with factors: two organic compounds, presence and absence of legumes and five proportions of each compound (0, 25, 50, 75, and 100%) in replacement of mineral fertilization recommended. Each replication consisted of a plot of 30 plants of coffee, with 12 working stations. The compounds were: compound 1, prepared with elephant grass and straw-de-café in the ratio 1:1 (v: v) and compound 2, prepared with elephant grass thatched-of-coffee and bed-of- chicken in the ratio 2:1:1 (v: v: v). The legume used was the bean-to-pig, sown between the rows of coffee trees. With the use of 100% of compound 1 and compound 2, the pH reached values of 6.5 and 6.3 respectively compared to pH 4.8 obtained with the mineral fertilizer. he means for the sum of bases (SB) followed the behavior of the exchangeable cations (Ca, Mg and K) of the soil that is linearly increased (p <0.10) with increasing proportions of the compounds. The fertilization with organic compounds is an alternative to improve soil fertility in agroecosystems of conilon.
The production of Conilon in organic systems has increased in the state of Espírito Santo, however, information on the impact of management on soil chemical characteristics are few and inconclusive. The aim of this study was to evaluate the effect of organic management fertilization on chemical properties of soil in agroecossystem conilon. On a farm in the municipality of Linhares, state of Espirito Santo, was mounted experiment in randomized complete block design with factorial distribution 2 x 2 x 5, with three replications, with factors: two organic compounds, presence and absence of legumes and five proportions of each compound (0, 25, 50, 75, and 100%) in replacement of mineral fertilization recommended. Each replication consisted of a plot of 30 plants of coffee, with 12 working stations. The compounds were: compound 1, prepared with elephant grass and straw-de-café in the ratio 1:1 (v: v) and compound 2, prepared with elephant grass thatched-of-coffee and bed-of- chicken in the ratio 2:1:1 (v: v: v). The legume used was the bean-to-pig, sown between the rows of coffee trees. With the use of 100% of compound 1 and compound 2, the pH reached values of 6.5 and 6.3 respectively compared to pH 4.8 obtained with the mineral fertilizer. he means for the sum of bases (SB) followed the behavior of the exchangeable cations (Ca, Mg and K) of the soil that is linearly increased (p <0.10) with increasing proportions of the compounds. The fertilization with organic compounds is an alternative to improve soil fertility in agroecosystems of conilon.
Descrição
Palavras-chave
Coffea canephora, Compostagem, Relação C/N, Argissolo, Acidez do solo
Citação
SILVA, V. M. et al. Atributos químicos do solo em sistemas de adubação orgânica de café conilon. Coffee Science, Lavras, v. 8, n. 4, p. 469-477, out./dez. 2013.