Em4885 irrigation management practices to protect ground water
Em4885 irrigation management practices to protect ground water
Em4885 irrigation management practices to protect ground water
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Deep percolation<br />
15<br />
CHAPTER 4<br />
FIGURE 4-4. Depiction of <strong>irrigation</strong> resulting in good distribution uniformity but poor <strong>irrigation</strong> efficiency<br />
In summary, Figures 4-1 through 4-4 demonstrate that:<br />
Depth of soil moisture<br />
Depth of actual app<br />
1. Improved <strong>irrigation</strong> system hardware may result in higher distribution uniformity and also<br />
make it easier <strong>to</strong> achieve higher application efficiency.<br />
2. But, achieving high application efficiency ultimately depends on the <strong>management</strong> of<br />
the system.<br />
An important corollary <strong>to</strong> the preceding is that if the entire field was assumed <strong>to</strong> be sufficiently<br />
wet during an <strong>irrigation</strong>, including that <strong>water</strong> required for leaching, then the distribution uniformity<br />
is the upper limit of application efficiency. It then follows that the first concern when improving<br />
<strong>irrigation</strong> system performance is the distribution uniformity.
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