Efeito de diferentes níveis de tensão de umidade no solo sobre a produção do trigo
Keywords:
consumo aparente, produção trigo, irrigação necessária, tensão umidade, rendimento médioAbstract
The effect of varying levels of soil moisture on the production of wheat was studied using soil moisture tension of 0.5, 1.0, 3.0 and 9.0 atmospheres in addition to the natural level.
The soil moisture tension was measured using the COLMAN method with cells placed at a depth of 12 cm in the center of each plot. Two irrigations of 20 mm each were made to the entire experimental area immediately after planting, to assure uniform germination of the seeds. Other irrigations of 30 mm were made when the soil moisture tension reached a predetermined level.
References
BRASIL - Instituto Brasileiro de Geografia e Estatística. Anuário Estatístico do Brasil. Rio de Janeiro, 1970. 772 p.
COLMAN, E.A. Soil moisture meter and cells. Instruction Manual MC-300 A. Soil Test, Inc. 1970. 18 p.
JUSSIAU, P.H. - El Trigo. Traduction y adaptacion por MOLINA, R. I. Madrid, S.d. Editorial Tecnos, S.A. Valverde. 131 p.
KELLEY, O. J. A rapid method of calibrating various instruments for measuring soil moisture in situ. Soil Set. 58:433-440. 1944.
PERRIN, J.H. Técnica da cultura do trigo. Belo Horizonte, Seção de Fomento Agricola Federal, 1951. 100 p.
PRIMAVESI, A.B. 4 cultura do trigo. São Paulo, Edições Me- lhoramento, s.d. 91 p. (Criação e Lav. no 25).
ROBINS, J.S. & C. E., DOMINGO. Moisture and nitrogen effects on irrigated spring wheat. Agronomy Journal, 54 (2). 135-138. 1962.
