Methyl isothiocyanate (MITC) generators, such as metam sodium (Met-Na), are used for soil fumigation of agricultural land. The ban on the fumigant methyl bromide has resulted in greater use of MITC generators. To understand the efficacy of MITC, it is necessary to assess its generation and disappearance kinetics when Met-Na is applied to soil. This study evaluated the movement of water and dist...

In subsurface irrigation systems in desert areas, the wetting front transport pattern allows determination of flow and timing. this study, an indoor experiment on aeolian sandy soil is designed, vertical horizontal movement distances under different flows are obtained. The dimensional analysis method was used to perform a experimental data. An empirical setting distance estimation model, which ...

The vadose zone plays a significant role during artificial recharge via the infiltration basin. Its thickness, lithology, heterogeneity, among others greatly affect efficiency. main objective of this research is to establish and impacts basin features factors on water distributions. In work, an ideal conceptual model was considered, mathematical models were built using HYDRUS (2D/3D) software p...

در این مقاله یک مدل ریاضی برای مسئله سیستم تولیدی همکارانه ساخت بر اساس سفارش با رعایت انصاف تخصیص بار‌های تولید طراحی شده است. اهداف اصلی مدل، کمینه‌سازی هزینه‌‌های کل و حداکثر استفاده از منابع به‌منظور عادلانه شرایط عدم­قطعیت کنترل پارامتر‌های غیرقطعی روش برنامه‌ریزی فازی ‌شده نتایج نشان می‌دهد افزایش نرخ عدم‌قطعیت، می­یابد. ازآنجاکه ظرفیت کارخانه‌ها ثابت است، مقدار تقاضا، هر کارخانه نیز می­ی...

Salt accumulation within the root zone significantly effects plant growth and development in arid semi-arid regions. Today, use of low-quality irrigation water agricultural production is increasing rapidly, because continuous depletion pollution resources. This means more salt transferred to soil profile. It great importance predetermine practices for sustainable crop production. For this purpo...

Despite increasing use of pressurized irrigation methods, most projects worldwide still involve surface systems. Accurate estimation the amount infiltrating water and its spatial distribution in soil is great importance design management furrow Moment analysis has previously been applied to describe subsurface using input data from numerical simulations rather than field measured data, assuming...

Enhanced water use efficiency (WUE) is the key to sustainable agriculture in arid regions. The installation of capillary barriers (CB) has been suggested as one potential solutions. CB effects are observed between two soil layers with distinctly different hydraulic properties. A helps retain upper, relatively fine-textured layer, suppressing losses by deep drainage. However, retaining a shallow...

This study investigated the moisture distribution characteristics of a soil wetting body under different influencing factors to inform design and management moistube irrigation system. A mathematical model movement was established based on Hydrus-2D software. The suitability simulation verified by laboratory experiments. Numerical simulations were carried out with investigate influence texture,...