Under well-watered conditions, on a poor sandy soil, drip-irrigated S-7 Pima produced 3.1 ba/ac, which is 87% of the 3.6 ba/ac produced by Acala Maxxa. Under stressed conditions with drip irrigation, on a good sandy soil, the Pima produced only 2.5 ba/ac, or 73% of the 3.4 ba/ac produced by the Maxxa. Pima is more sensitive to moisture stress than Maxxa. Furrow irrigated treatments were over-watered, and had lower yields. Water-run gypsum improved infiltration. Pima roots did not penetrate the soil as fast as Maxxa roots.