Caracterização do sistema radicular do cafeeiro conilon sob irrigação localizada
Data
2017-02-24
Autores
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Editor
Universidade Federal do Espírito Santo
Resumo
O cafeeiro é uma cultura de grande importância econômica no Brasil, para garantir altas produtividades e rentabilidade o manejo da irrigação se torna importante. O conhecimento do sistema radicular da cultura é de suma importância para a determinação correta da lâmina de irrigação. Diante disso, objetivou-se caracterizar o sistema radicular do cafeeiro Conilon sob irrigação localizada. O experimento foi realizado em três manejos de irrigação com aplicação de lâminas de 10, 3 e 5 mm, em São Mateus-ES, em um delineamento inteiramente casualizado em parcela subdividida 4 x 6, sendo quatro pontos em relação à planta e seis faixas de profundidade, com cinco repetições. Sendo dois na linha e sete na entre linha com distância entre si de 0,20 m. E na entre linha do cafeeiro em parcela subdividida 5 x 6, sendo cinco pontos em relação à planta e seis faixas de profundidade, com cinco repetições. Foram avaliados volume, área superficial, comprimento e diâmetro de raiz. O cafeeiro Conilon no manejo com lâmina de irrigação de 10 mm apresentou 67,4% do volume de raiz e 68,0% de área superficial, já com lâmina de 3 mm todos os dias, as plantas apresentaram 74,5% e 64,5% do volume e área superficial de raiz e no manejo com lâmina de 5 mm duas vezes na semana, apresentou 75,4% e 70,2% do volume e área superficial de raiz, em todos os manejos concentrados até a profundidade de 0,30 m. O maior comprimento e diâmetro de raiz foi encontrado na faixa de profundidade superficial do solo, diminuindo em profundidade. O cafeeiro apresentou 57,5% do volume de raiz para o manejo com 10 mm, e 70,5% do volume de raiz para o manejo com 3 e 5 mm. A área superficial de raiz foi de 53,9%, 69% e 66,4%, para os manejos com 10, 3 e 5 mm, respectivamente.
Coffee is a crop of great economic importance in Brazil, to ensure high productivity and profitability irrigation management becomes important. The knowledge of the root system of the crop is of extreme importance for the correct determination of the irrigation blade. The objective of this study was to characterize the root system of the Conilon coffee plant under localized irrigation. The experiment was carried out in three irrigation management with 10, 3 and 5 mm slides in São Mateus-ES, in a completely randomized design in subdivided plot 4 x 6, being four points in relation to the plant and six bands of Depth, with five replicates. Being two in the line and seven in the line with distance of each other of 0.20 m. And in the interweave of the coffee tree in a plot subdivided 5 x 6, being five points in relation to the plant and six depth bands, with five replications. Volume, surface area, length and root diameter were evaluated. The coffee tree Conilon in the management with a 10 mm irrigation blade, presented 67.4% of the root volume and 68.0% of the surface area, already with a leaf blade of 3 mm every day, the plants presented 74.5% and 64.5% of the volume and root surface area and in the 5 mm blade management twice weekly presented 75.4% and 70.2% of the volume and root surface area, in all managements concentrated to the depth of 0.30 m. The largest root length and diameter were found in the soil surface depth range, decreasing in depth. The coffee tree presented 57.5% of the root volume for the management with 10 mm, and 70.5% of the root volume for handling with 3 and 5 mm. The root surface area was 53.9%, 69% and 66.4% for the treatments with 10, 3 and 5 mm respectively.
Coffee is a crop of great economic importance in Brazil, to ensure high productivity and profitability irrigation management becomes important. The knowledge of the root system of the crop is of extreme importance for the correct determination of the irrigation blade. The objective of this study was to characterize the root system of the Conilon coffee plant under localized irrigation. The experiment was carried out in three irrigation management with 10, 3 and 5 mm slides in São Mateus-ES, in a completely randomized design in subdivided plot 4 x 6, being four points in relation to the plant and six bands of Depth, with five replicates. Being two in the line and seven in the line with distance of each other of 0.20 m. And in the interweave of the coffee tree in a plot subdivided 5 x 6, being five points in relation to the plant and six depth bands, with five replications. Volume, surface area, length and root diameter were evaluated. The coffee tree Conilon in the management with a 10 mm irrigation blade, presented 67.4% of the root volume and 68.0% of the surface area, already with a leaf blade of 3 mm every day, the plants presented 74.5% and 64.5% of the volume and root surface area and in the 5 mm blade management twice weekly presented 75.4% and 70.2% of the volume and root surface area, in all managements concentrated to the depth of 0.30 m. The largest root length and diameter were found in the soil surface depth range, decreasing in depth. The coffee tree presented 57.5% of the root volume for the management with 10 mm, and 70.5% of the root volume for handling with 3 and 5 mm. The root surface area was 53.9%, 69% and 66.4% for the treatments with 10, 3 and 5 mm respectively.
Descrição
Tese de Doutorado defendida na Universidade Federal do Espírito Santo.
Palavras-chave
Café conilon, Recursos hídricos, Gotejamento, Solos – umidade
Citação
SOUZA, J. M. Caracterização do sistema radicular do cafeeiro conilon sob irrigação localizada . 2017. 74 f. Tese (Doutorado em Produção Vegetal) - Universidade Federal do Espírito Santo, Alegre. 2017.