Refinar búsqueda
Resultados 111-120 de 173
Modelo analogico electrico para estimar velocidad de infiltracion del agua en suelos con cinco diferentes porcentajes de arcilla.
1978
Diaz Rosales C.E. | Valle Florencia H. del
Orificios sumergidos ajustables y tapas de lona para control y medicion del agua de riego en la parcela
1978
Ho Chau, Raul | Olsen, Edwin C
Irrigacao da cultura da cana de acucar a diferentes niveis de agua do solo [Saccharum spp; Absorcao; Evapotranspiracao].
1978
Cambuim F.A. | Lima J.F.W.F.
Trampas de agua para determinar la altura y periodicidad del vuelo de Empoasca kraemeri Ross & Moore, 1975 (Homoptera, Thyphlocibidae) Texto completo
1978
Modelo analogico-electronico para estimar la velocidad de infiltracion del agua en suelos con cinco diferentes porcentages de arcilla.
1978
Diaz Rosales C.E.
Locacao e perfuracao de pocos tubulares, em areas carstificadas, visando a obtencao de agua para irrigacao [Minas Gerais; Brasil].
1978
Bruno C.R.M.
Un metodo de suministro continuo de agua a baja tension para plantas en potes en invernadero o invernaculos [riego].
1978
Gorrin H A.
Solucion analitica de la ecuacion de flujo para el caso de la evaporacion [de agua] desde un suelo desnudo.
1978
Gurovich L.A. | Araya J.
EFECTO DEL AGUA NEGRA DE RIEGO Y DE LA FERTILIZACION NITRO - FOSFORICA SOBRE EL RENDIMIENTO DE FORRAJE EN AVENA Texto completo
1978
HERNANDEZ CHAVEZ JOSE LUIS ALFREDO | SIN
Agua del suelo y aereación en la producción de frijol rojo. 1 Succión máxima media de humedad del suelo Texto completo
1978
Grain and aerial dry matter production and the number of pods per plant were found to be maximum in the '27-R' cultivar of Phaseolus vulgaris L, a red bean grown in the tropics, when the maximum soil moisture suction was 0.8 bars at 5 cm depth or 0.6 bars at 15 cm depth. The experiment was carried out in 26 liter pots of fumigated soil in a greenhouse at CATIE, Turrialba, Costa Rica, with plant spacing similar to field conditions. When the maximum suctions were greater or lesser than the optimum yield value, there was a reduction in yield. It was found that grain production loss per unit bar of suction change when the cyclic maximum suctions were less than the optimum value, were 15 times greater than the rate of production loss when the values were greater than the optimum. No disease nor pest problems were encountered during the study. Potential evapotranspiration increased to a maximum at the eight week and subsequently decreased. Evapotranspiration decreased with increasing maximum suction.
Mostrar más [+] Menos [-]