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BORON CONTENT IN IRRIGATION WATER AND ITS EFFECT IN GYPSIFEROUS SOILS CONTENT OF BORON IN UPPER TIGRIS TERRACE | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 2014, Issue 2, 2009, Pages 0-0 | ||
| Authors | ||
| K. A. Saliem; A. A. Al-Falahi | ||
| Abstract | ||
| A sample area of 70000 hectares in gypsiferous soils of upper Tigris Terrace at Salahaddin governorate located in the eastern of Tiger River between Samarra and Al-Dour regions. The goal of this study to investigate on Boron content in the surface irrigation water (Tigirs river) and underground water (wells water) which have been used to irrigate crops in the area and its effect on soil boron content and behavior in the irrigated area for relatively long term. The results have shown that the concentration of boron in the surface irrigation water was relatively low (0.08 mg B.L-1), and this irrigation water is suitable for irrigating all agriculture crops. Meanwhile the result of investigation on boron in underground water showed that the concentration of boron was relatively high (0.51-1.93) with an average of 1.04 mg.L-1, and this concentration is sufficient to supply most of the crops with their requirement from boron. In the same time this level of boron perhaps has negative effect on the sensitive crops to boron. The boron content in irrigated soils have shown an increase with increasing of boron in irrigation water. The average boron content in uncultivated soils was 0.340 mg.L-1. However, the average boron content of the soil irrigated with Tigris water was 0.587 mg.L-1. This indicated the accumulation of boron in soil with time with an increase of 73% in boron. Moreover the average of boron in soil irrigated with underground water was 1.937 mg.L-1 which was 470% more than the boron in uncultivated soil. Kinetic experiments showed that boron release from soil increased at the first 24 hrs and this mechanism of boron release became slower with the rest of time. On the bases of the results we do not recommend using fertilizer containing B in these areas, particularly to the crops irrigated with underground water. | ||
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