Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/13856
Title: Efeito da profundidade e espaçamento de instalação de gotejadores no potencial hídrico das folhas de cafeeiro em solo argiloso
Other Titles: Effect of instalation depth and distance of drip emitter on coffee leaf water potential in a tropical soil
Authors: Barreto, Carlos Vinícius Garcia
Sakai, Emílio
Arruda, Flávio Bussmeyer
Pires, Regina Célia de Matos
Silva, Emerson Alves da
Keywords: Coffee science
Coffea arabica L.
Irrigação
Agricultural sciences
Biological sciences
Coffea canephora
Drip irrigation
Subsurface Drip Irrigation (SDI)
Leaf water potential
Gotejamento
Potencial de água
Issue Date: 2009
Citation: BARRETO, C. V. G. et al. Efeito da profundidade e espaçamento de instalação de gotejadores no potencial hídrico das folhas de cafeeiro em solo argiloso. Coffee Science, Lavras, v. 4, n. 2, p. 114-125, jul./dez. 2009.
Abstract: The objective of this work was to evaluate the performance of different configurations of subsurface drip irrigation (SDI) by measuring coffee (Coffeea arabica L.) leaf water potential. Six treatments of drip irrigation combining two drip emitters spaced at 0.50 and 0.80 m, with three drip placement depths: 0 cm (soil surface), 0.10 m and 0.20 cm. The combined treatments were: T1 (50 – 0), T2 (50 – 10), T3 (50 – 20), T4 (80 – 0), T5 (80 – 10) and T6 (80 – 20). Leaf water potential was measured using a Scholander pressure pump at predawn and during the day. Both surface drip irrigation treatments showed a lower predawn leaf water potential. The treatment that presented better performance with higher water potential values was T2. Another fact observed was that treatments with wider spacing between emitters (T4, T5 and T6) always presentd higher water stress than other treatments, mainly in the period when irrigation was suppressed (June, 25th to September, 14th).
URI: http://repositorio.ufla.br/jspui/handle/1/13856
http://www.coffeescience.ufla.br/index.php/Coffeescience/article/view/176
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