introduction: the area under cultivation and yield of crops are affected by various factors, some of which are controllable and some others are uncontrollable. controllable factors are divided into two types of price and non-price factors. among the price factors, prices of agricultural products and inputs play an important role in expanding the cultivation area. uncontrollable factors also hav...

The article describes the technical condition of irrigation networks Talas district Zhambyl region and analyzes indicators its impact on dynamics changes in area ​​irrigated land. Based data field work carried out recent years statistics, areas irrigated arable land is shown, factors affecting reduction are identified. lands have a very convenient water supply sewerage system, but due to fact t...

Agricultural productivity has increased in the Texas High Plains at the cost of declining water tables, putting at risk the sustainability of the Ogallala Aquifer as a principal source of water for irrigated agriculture. This has led area producers to seek alternative practices that can increase water use efficiency (WUE) through more careful management of water. One potential way of improving ...

The biggest water demand is in the agricultural sector. This great need caused by irrigation system with continuous inundation (conventional). One of water-saving methods System Rice Intensification (SRI) method. SRI method giving done intermittently. obstacles to application a source. dam one sources whose availability relatively easy manage, making it suitable for applications using study aim...

The objective of the current study was to investigate the role of waste stabilization ponds (WSP) and wastewater-irrigated sites for the production of mosquitoes of medical importance. Mosquito larvae were collected fortnightly from July 2001 to June 2002 in Faisalabad, Pakistan. In total, 3,132 water samples from WSP and irrigated areas yielded 606,053 Culex larvae of five species. In addition...

This paper aims to achieve an economic feasibility and life cycle assessment of three different olive cultivation systems in the Mediterranean area through joint use environmental indicators, order identify key elements optimize their performance a lower impact. Three management were analysed by distinguishing Treatment 1—Fully Irrigated, 2—Partially 3—Non-Irrigated, which conducted levels irri...

This study was designed to evaluate the effect on root dentin microhardness of 2.5% and 6% sodium hypochlorite solutions for various irrigation periods. Forty-two bovine roots were divided into seven groups. The control group was irrigated with saline. The experimental samples were continuously irrigated with 2.5% or 6% NaOCl for 5, 10, or 20 min. Microhardness was measured at depths of 500 mum...

This paper looks at differences in spatial and temporal variation of rice yields in China and Brazil. We find that rice yields in China have converged over time and that rice production has become more and more homogeneous. In contrast, rice yields in Brazil have diverged over time, primarily due to variations in upland rice yields. Three hypotheses are put forward to explain the different beha...