Abstract
Two surface irrigation methods on three crop fields (border irrigated alfalfa and small grain and furrow-irrigated potatoes) in southeast Idaho were tested to determine their effects on the parameters of the Kostiakov equation. A double-ring infiltrometer was used to measure the water intake rate of soil for the border irrigated fields. The furrow-irrigated fields were tested by both double-ring infiltrometer and inflow-outflow methods. The border-irrigated fields showed higher values of the intercept of the Kostiakov equation than the furrow-irrigated fields for a given soil. This means that the border-irrigated fields have a higher initial intake rate than that of the furrow-irrigated fields. The intercepts obtained by the inflow-outflow method were lower than that by the double-ring infiltrometer but the exponents were statistically not different.
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