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ROLE OF ORGANIC WASTES IN REDUCING THE EFFECT OF SALINE WATER IN CERTAIN CHEMICALS AND AVAILABILITY OF NPK | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 41, Issue 1, 2010, Pages 133-141 | ||
| Authors | ||
| Khamees A. Juayir; Mahmod H. Mnajd; Musa F.Yasin | ||
| Abstract | ||
| To study the effect of different organic wastes and method of application to reduce effects of Salty Water on certain chemical properties of Soil Irrigated by Salty Water and the availability of N,P ,K. A field experiment was conducted in a clay loam Soil in the spring season / 2007 with a randomized complete block design in a factorial experiment to study two main factors: 1- sources of wastes: control (AO), sheep wastes (A), wastes of poultry (B) and wheat hay (C). 2- method of application: direct application to Soil (S), indirect, application by passing Drainage Water through organic wastes (W). The plots were Irrigated with Drainage Water (EC = 4.15 dS.m-1) by surface Irrlgation. Soil samples were taken at the end of experiment at depth of 0-30 cm to determine EC , pH, SAR and available N,P and K. The results showed that organic wastes reduced the EC and pH. However, sheep wastes had the best in reducing EC with a percentage of 7.80% , "and the indirect addition of wastes (W) was significantly superior in reducing EC with a percentage of 6.26%. While the CS treatment was' significantly superior in redueing the e.H of percentage 5.30/0. Poultry wastes were superior in the available nitrogen and phosphorus (258.3 , 19.4 mg. kg-1 Soil respectively), while the direct addition increase available potassium (142.16 mg.kg' Soil) and the indirect addition (W) gave the best available nitrogen (244.8 mg.kg-1Soll), From these results we conclude that addition of different sources of organic wastes reduced the EC , pH and SAR and increased available N,P,K. The indirect addition of wastes is better than the indirect addition, so recommend to use organic wastes at the indirect addition to reduce the effects of Salty Water which is use for Irrigation. | ||
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