INFLUENCE OF IRRIGATION WATER TYPES AND ORGANIC MANURES ON RICE PRODUCTION

A field experiment was conducted at Research Farm of Agronomy Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt for a period of one year (2014) to find out the effect of irrigation water types and organic manures on some soil chemical properties and yield of rice crop (Var., 104). A strip plot design was used with three replications, the irrigation water types (I) were industrial wastewater, agricultural drainage water and normal irrigation water. The organic manures (T) consisted of FYM, compost, and FYM + compost, These treatments were given in rate of 5 and 2 t fed-1. The plants without treatments were served as a control. The results illustrate that, the soil pH was decreased while soil EC was increased significantly due to using industrial and agricultural drainage water in combination with organic manure treatments. The highest soil pH was recorded by the treatments I1T2 (7.62), I3T4 (7.66) and I2T4 (7.35) at vegetative, tillering and harvest stages, respectively. The treatments I1T4, I2T4 and I1T2 recorded the highest soil EC (ppm) at vegetative (522), tillering (291) and harvest (394) stages, respectively. The obtained data illustrate that, using of normal irrigation water (I3) combined with addition of FYM + Compost @ recommended doses (T4) recorded the highest (5416 kg fed-1) grain yield  of rice crop followed by I3T3 (4415 kg fed-1), I2T4 (4292 kg fed-1), I3T2 (4195 kg fed-1) and I3T1 (4050 kg fed-1). Also, under use of different irrigation water, the addition of compost @ 2 t fed-1 (T3) was found to be superior than application of FYM @ 5 t fed-1 (T2) in registering the highest grain and straw yield of rice crop.