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No Till and Tillage Under Subsurface Drip Irrigation

Juan Enciso, Bryan Unruh, Steve Sturtz and Warren Multer


 
ABSTRACT

Subsurface Drip Irrigation is the preferred irrigation method when water is limited because of its ability to spread a small irrigation depth uniformly over a great surface area. The main objective of this paper was to study the effect of no till and reduced tillage with Subsurface Drip Irrigation Systems. The experiment consisted of 10 plots. Each treatment was replicated 5 times. Each plot had an area of 0.57 acres, consisting of 4 rows spaced at 40 inches and with a row length of 1820 ft. The cost of the tillage practices for the no till was $65.5 and $59.85 for the reduced tillage. The cotton lint yield was 1065 lbs/acre for the no till and 986 lbs/acre for the reduced tillage. There was no statistical difference on yield and final income for the two treatments. This experiment needs to be continued for two more years to observe changes in physical properties and water retention between the soil. The gypsum blocks can not be used to monitor soil moisture content through the end of the season in these deficit irrigation conditions, because the soil reached almost permanent wilting point on July 28 th of 2000, at a depth of 2 ft.





Reprinted from Proceedings of the 2001 Beltwide Cotton Conferences pp. 299 - 301
©National Cotton Council, Memphis TN

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Document last modified XXXXXX, XXX XX 2001