Mathematical Model for Maximizing Irrigation Water Benefits

Abstract

Predicting impact of alternative management for enhancing the influence of soil parameters and water management on crop production is concerning in scientific community. This paper emphasis on the soil moisture behaviour at different profiles and their relation with soil temperature and dripper's discharge using a two boxes with diminution (1m X 1m X 1m) for cultivate  Fenugreek (Trigonella foenum-graecum L.,Fam. Fabaceae) under sandy soil texture with test a two factors. First factor is the timing of irrigation (IRR1) at the morning and (IRR2) at the evening . Second factor is adding compost (C1) (6 ton/fed) and (C2) without compost. Experiment found out that the yield recorded highest production under C1 by 847% comparing with C2 without significant influence for the timing of irrigation. Moreover; using Robust Methods to determent the mathematical relationship with different parameter [soil temperature(C°) for different depths and water quantity (L/day) ] to estimate the ratio of soil moisture. Furthermore; using (matrix) Cramer’s method to predict any of these parameters by know one parameter.

Keywords: soil temperature, soil moisture, timing of irrigation and mathematic relationship.