土木環境工学ジャーナル

Improving Chemigation Systems Efficiency Under Arid Conditions Based on Weighing-Points Technique

Abstract

Yasser E Arafa *,Khaled A Shalabi

Although, chemigation systems is usually used to ensure stable productivity of crop-unit area and improve yieldquality, but on the other hands, it represent a serious problem for applying such systems, as well as, its impact on either yield production and attributed quality parameters or agricultural physical resources. The abovementioned, corresponded problems could be avoided, even and even so, good management practices had been considered for all parts of chemigation systems, i.e. irrigation systems; water and agro-chemical injecting equipment; soil management and crop considerations. Management of a chemigation system requires a highly-qualitative database of the available resources and corresponding field status and conditions. Therefore, for solving the abovementioned problems, weighing-points technique may play a crucial role and can be an effective tool which can be used efficiently. Hereby, the aim of this study was to build, verify and validate a proto type-rule of weighing-point technique for managing chemigation systems under arid ecosystem conditions of Egyptian agriculture. Results indicated that there was a highly significant correlation degrees ranging from 86.39 up to 95% of the observed field data vs estimated one response to the variants in chemigation management. Hereby, weighing point technique has an integrity to observe a good chemigation practices in such extreme cases ad anticipated variables and qualifiers.