Studies to prediction of soil moisture constants and other properties rather than direct measurements were never dwindle importance. Models derived from obtained easily. Therefore, in this study focused on the predictability some constants, whose determination was often difficult time-consuming, penetration resistance measurements. In improvement alternative models for estimation constants; add...

In this study, the electrical conductivity and physical properties of loamy soil samples with various additives is determined. The meter was used to obtain some standard methods have been adopted other properties. It observed that combined NPK had highest least coming from (control). concluded raises soil. This goes forth show a measure amount salts in (salinity soil), which an important indica...

Inverse solution techniques currently used for estimating unsaturated soil hydraulic functions from laboratory outflow experiments use cumulative outflow only in combination with initial and final soil water pressure head values. Additional soil water information is needed to improve the estimation procedure and to minimize uniqueness problems. It was the objective of this study to experimental...

Plant metabolic activity in arid and semi-arid environments is largely tied to episodic precipitation events or ‘‘pulses’’. The ability of plants to take up and utilize rain pulses during the growing season in these water-limited ecosystems is determined in part by pulse timing, intensity and amount, and by hydrological properties of the soil that translate precipitation into plant-available so...

Inverse linear relationships between soil strength and yield in Coastal Plain soils that have subsurface genetic hard layers have previously been developed for corn (Zea mays L.), soybean (Glycine max L. Merr.), and wheat (Triticum aestivum L.) grown under management systems that include annual or biannual non-inversion deep tillage. In a field study in the southeastern Coastal Plains of the US...