W.R. DeTar and L.F. Elliott
OBJECTIVES: To evaluate various subsurface dripperlines for use with cotton on a very sandy soil, by measuring uniformity of emergence, plant growth characteristics, yields, and changes in flow rates.
PROCEDURES: Table 1 shows the various combinations of tubing types, depth of placement, emitter spacing, discharge rate, and wall thickness for some of the companies that felt that their product was suitable for subsurface drip irrigation of cotton.
W.C. Hofmann, L.M. Carter, P.E. Keeley, and L.F. Elliott J.H. Chesson, R.J. Thullen, D. Ballard, and N. Goodell
OBJECTIVES: To develop the criteria for ‘best practice’ cotton production systems. To test experimental component subsystems and the interrelationship of cotton production subsystems including rotational crops. To demonstrate for technology transfer ‘best practice’ systems.
PROCEDURE: Four systems were identified for inclusion in a field study resulting from a factorial of two systems categories: row spacing and tillage. The ‘best practice’ row spacing was selected as 30 inch as compared…
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OBJECTIVES: To compare drip and furrow irrigation by measuring
the emergence, plant growth characteristics, yield, rate of plant die-off, and water use of Acala cotton on very sandy soil with a great deal of pressure from nematodes and Fusarium wilt.
PROCEDURES: This experiment was started in the Spring of 1989 on a 0.4-ha plot of uniform loamy sand soil.