in this study, a model of optimal allocation of subsidy was developed based on the microeconomic optimization theory. the model was evaluated by applying to premium subsidy allocation to the cereal crops’ (corn, rain fed barley and wheat, and irrigated barley and wheat) insurance in iran. in developing the model, it was assumed that, policymaker on behalf of society, follows a social utility ma...

Harvest and post-harvest operations constitute principal constraints to rice production, especially in irrigated systems, because of the larger yield that has to be handled. Post-harvest crop losses of up to 35% have been reported and attributed to inefficiency of manual threshing of rice by small-scale farmers. This leads to poor grain quality and rejection of locally produced rice. The Africa...

Biophysical simulation models (e.g. APSIM) using historical rainfall data are increasingly being used to provide yield and other data on crop rotations in various regions of Australia. However, to analyse the economics of these rotations it is desirable to incorporate the other main driver of profitability, price variation. Because the context was that APSIM was being used to simulate an existi...

Globally and in the United States, agriculture is the major user not only of water but also of land. This paper compares trends in aggregate and per capita water and land use by the agricultural sector in the United States and the world during the 20 century. It finds that although cropland use per capita has been declining in both areas since the early 1900s, agricultural water use per capita ...

The use of Precision Agriculture systems is in its infancy in Greece, because of the high fragmented land and the adherence of farmers to traditional farming methods. This paper presents the design, implementation and performance evaluation of an integrated agricultural monitoring and irrigation system using energy-autonomous wireless sensors and actuators. Monitoring and irrigation of the fiel...

Description: Support to smallholder irrigation agriculture by virtue of establishing smalland medium-scale irrigation perimeters along the Eastern and South-Eastern slopes of Mt Kenya. In the first two phases (phase III ongoing, phase IV under preparation) approx. 2,700 smallholder farmers benefited from the establishment of 1,785 hectares of newly irrigated land (6 perimeters with altogether 4...

This study aims to investigate the effects of an optimized sowing calendar for wheat over a surface irrigation scheme in semi-arid region Haouz (Morocco) on water requirements, crop growth and development yield. For that, scenario-based simulation approach based covariance matrix adaptation–evolution strategy (CMA-ES) was proposed optimize both spatiotemporal distribution dates schedules, then ...

An assessment of the potential impact of climate change and the concurrent increase of atmospheric carbon dioxide (CO2) concentration on eastern Washington State agriculture was conducted. Climate projections from four selected general circulation models (GCM) were chosen to evaluate impacts for the periods 20102039, 2030-2059 and 2070-2099, identified as 2020, 2040, and 2080 scenarios, respect...