The determinants of the technical efficiency (TE) of adopters and non-adopters of soil and water conservation (SWC) technologies in the upper Rwizi micro-catchment of south-western Uganda are compared using cross-sectional survey data from 246 smallholder farmers. A Cobb-Douglas stochastic production frontier and a probit selection model fitted to generate inverse Mills ratios for adopters and ...

Drylands functioning depends on water fluxes and the retention of resources. The restoration degraded areas should mimic natural arrangement vegetation in landscape a source-sink pattern. Reintroducing key woody seedlings through planting is major concern ecological as these often exceed degradation thresholds ecosystem functions are limited. However, it not clear how might determine performanc...

Date:_____________________________________ iii PREFACE In 1998 I graduated from the University of California, Davis with a Bachelor of Science degree in Wildlife, Fisheries, and Conservation Biology. During my last year at Davis, I decided that I wanted to spend some time working and living abroad in a completely different culture from the one I had grown up in. The Peace Corps Masters Internat...

Understanding the soil moisture behavior in relation to land use tropical Andean mountain catchments is essential for comprehending water fluxes, ecohydrological relations and hydrological dynamics this understudied ecosystem. Soils are a key factor of these ecosystems, especially reference level regulation anthropogenic activities that can alter interactions, generate physical, chemical biolog...

ABSTRACT- The aim of this study is economic analysis of supplemental irrigation (SI) for rain-fed fig trees in the south of Iran, with and without micro-catchment water harvesting systems (MCWHS). Under no MCWHS, by decreasing about 55 % of applied water, the fig yield decreased about 28% and net income increased twice compared with the maximum yield condition. In general, the ...