|Johnson, Wiley - Carroll|
Submitted to: Southern Conservation Tillage for Sustainable Agriculture Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 8/26/1999
Publication Date: N/A
Citation: Brenneman, T.B., Baker, S.H., Johnson, W.C., Johnson, A.W., Sumner, D.R. 1999. Effects of tillage systems on peanut diseases, yield, and fungicide performance in a peanut-cotton rotation [abstract]. Proceedings of the 22nd Annual Southern Conservation Tillage Conference for Sustainable Agriculture. p. 10. Interpretive Summary:
Technical Abstract: Studies were conducted from 1994 to 1998 on the effect of tillage systems in a peanut-cotton rotation on peanut diseases, weed species composition, yield, and fungicide performance. Tillage systems were conventional deep-turn, strip-till in a rye stubble, and strip-till in a previous years crop debris. Split-plots were peanut treated or nontreated with flutolanil lfor stem-rot control. Flutolanil reduced stem-rot incidence 70 to 80% compared to nontreated plots. In nontreated plots, there was no difference in stem-rot incidence in peanut among tillage treatments. The conventional till system had greater levels of spotted wilt in peanut, verifying earlier observations that peanut grown in reduced tillage systems had less spotted wilt than peanut grown in the conventional-till system. Weed species composition differed among tillage systems in both crops, with more intensive weed control efforts needed in plots with reduced tillage. Although weeds were successfully controlled, costs of successfully controlling weeds in continuous reduced tillage systems were significantly greater than in the conventional-till system. Neither cotton nor peanut yields differed among tillage systems. Flutolanil increased peanut yields by 47% compared to the nontreated control.