the present research was conducted to study the effect of irrigation treatments on growth indices, yield, and water use efficiency of long green pepper (capsicum annuum l.) at the research greenhouse of shahrekord university. this experiment was done in a clay-loam soil using randomized design with four treatments i.e. 40%, 60%, 80%, and 100 percent of water requirement and three replications, ...

estimating and determining of rice water requirement, being the main cultivate of rasht region, is crucial for devoting water to this region. equations which are used to calculate the reference evapotranspiration (et0) are not match to all climatic conditions, due to their empirical bases. so, it is necessary to clarify proper methods for each region. crop coefficient (kc) is also the main para...

unsustainable harvesting of agricultural water resources in the province of kerman, has caused an annual average of one-meter drop in ground water levels. surface irrigation methods in pistachio trees have low efficiency because of inherent characteristics and its incorrect application, as well as low access to water resource in pistachio regions. therefore under the current critical condition,...

the purpose of this study is evaluation and improvement of production functions to estimate alfalfa yields under different deficit irrigations conditions and determination of “production of yield - water use” in qazvin plain. this investigation was applied by factorial experiment in a randomized complete block design with four water treatments including e4, e3, e2, and e1, respectively, equal t...

coriandrum sativum l. is one of the most important plants compared to the other herbs and medicinal plants as a planted covered area in kermanshah province. for a suitable irrigation management programming, the awareness of crop coefficient and water requirement in different plant stages is essential. the ratio of actual evapotranspiration to reference crop evapotranspiration is defined as crop...

Determining the Quinoa Water Requirement and Plant Response Coefficients to Stress in Different Growth Stages Khuzestan Climate

soil unsaturated zone is one of the important parts of hydrological cycle that has an especial role in agricultural water resources management. the objective of this research was to determine the amount of root water uptake under simultaneous water, salinity, and nitrogen stresses as prevailing conditions in arid and semi-arid regions. to do so, the experiment was conducted with four quantitati...