To verify the possibility of apply the variations of isotope, deuterium and oxygen-18 concentrations it soil-plant-atmosphere system this study was carried out. It was shown that it is possible to use the correlations between ...

The purpose of this study was to assess surface runoff for three soils from the brejo paraibano region by using the methodology of the Simplified Model for Determining Surface Runoff propossed by MILLAR & LIU (1977). ...

The effect of four reclamation methods and Wo tillage treatments on the production and yield components of rice was studied in an alluvial soil with sodium problems. The tillage treatments consisted of traditional plowing ...

The hydric balance was based in seven -year data obtained a t the UEP/Barreiras Weather Station. The e va p o tra n sp ira tio n was c a lc u la te d by the Hargreaves method and the evaporation by the class A tank with ...

Sprinkler irrigation systems are widely used in Brazil due mainly to their economy and adaptability to rough topography. The objetive of this work was to develop a method to estimate the maximum number of sprinklers on a ...

In order to obtain, under the soil and climate conditions of the Cerrados of the Federal District, a soil moisture level suitable for the cultivation of carrots (Daucus carota L.) in the active development phase of the ...

In brial realized in the area at the Experimental Stati on of Gorutuba Irrigation Project, was studied the effect of four water blades applied each 2 days, on drip irrigation system on the characteristics of mature fruit ...

This work relates basic resources for the implantation of hydro-agricultural projects in four regions of the State of Rio Grande do Sul, based on a frequencial study of irrigation ne oessities. The period of agronomia ...