'Fertilizer usage' diaporamas de présentation

z Fixed and variable costs are adapted from Pitts et al. 2002.

Table 3. Estimated irrigation and fertilizer costs ($) for 100-acres drip irrigated tomato using a constant irrigation operating pressure (OP), and reduced OP using an adjustable pressure regulator or two preset pressure regulators. z Fixed and variable costs are adapted from Pitts et al. 2002.

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