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ARS Home » Southeast Area » Dawson, Georgia » National Peanut Research Laboratory » Research » Publications at this Location » Publication #190593
Title: YIELD AND ECONOMIC SUSTAINABILITY OF REDUCED IRRIGATION CAPACITY ON THREE TILLAGE SYSTEMS IN THE SOUTHEASTERN COASTAL PLAIN

Author
item FAIRCLOTH, WILSON
item ROWLAND, DIANE
item Lamb, Marshall
item Balkcom, Kipling
item SULLIVAN, DANA
item NUTI, RUSSELL

Submitted to: Southern Conservation Tillage Systems Conference
Publication Type: Abstract Only
Publication Acceptance Date: 5/15/2005
Publication Date: 6/27/2005
Citation: -

Interpretive Summary: none required.

Technical Abstract: The interaction between reduced irrigation capacity and tillage, including the possible conservation of water with reduced tillage systems, is of vital interest to growers. A field study was initiated in the fall of 2001 to determine crop response under a simulated reduction in irrigation. Three tillage systems were replicated three times each under one of four irrigation levels (100% of a recommended amount, 66%, 33%, and 0% or dryland). Tillage systems were conventional tillage, wide-strip tillage and narrow-strip tillage. The test area was planted in triplicate, in a peanut-cotton-corn rotation, with each crop being present each year. Tillage was significant for peanut yield and net return at the 0% irrigation level only. No trend in yield was evident, however, net return was consistently high with narrow-strip tillage in all years. Irrigation, at any level greater than 0%, masked tillage effects in both yield and net return. These data confirm the suitability of peanut to conservation tillage practices, including both wide- and narrow-strip tillage.