A STUDY ON THE EFFECTS OF TWO IRRIGATION SYSTEMS AND THE REUSE OF DRAINAGE WATER ON CORN AND SUNFLOWER YIELD

Abstract

Due to scarcity of fresh water at the end of canals. There is choice for the farmer to use another types of water for irrigation such as agricultural drainage water, which is available for him. Many areas use drainage water for irrigation such as El-Wady and Kafr El-Sheikh. A field experiment was carried out during summer season of 1997 in North ofEl-Tahrir district, El-Bohaira Governorate. To study the individual and interaction effect of irrigation water salinity, irrigation systems and applied water volume on salt content and distribution of loamy sand soil, soil moisture content and distribution, crop yield, vegetative growth and water use efficiency of corn and sunflower crops. The experiment was laid out in split plot design with three replicates. The experiment included the following factors: Irrigation systems: There are two different irrigation systems as follows: 1- Flood irrigation 2- Drip irrigation Applied water volume: Three different amounts of applied water volumes for two crops (corn and sunflower) under both irrigation systems (drip and surface) were used as follows: Under flood irrigation, the amounts were 2066.4, 2755.2 and 3444 m 3/season, for corn plant and they were 2314.2, 3087 and 3855.6 m 3/season, for sunflower plant.