Maize hybrid response to tillage under irrigated and dryland conditions

Abstract

Wilhelm, W.W., Hinze, M.R. and Gardner, C.O., 1991. Maize hybrid response to tillage under irrigated and dryland conditions. Field Crops Res., 26: 57-66.The popularity of reduced-tillage cropping systems has emphasized the need to determine if maize (Zea mays L.) developed under conventional tillage systems (moldboard plow, disk, and harrow) is readily adaptable to conservation production systems (greater than 30% residue cover after planting). Past research has indicated that crops grown under conservation production systems are subjected to cooler and wetter soil conditions than crops grown with conventional tillage practices. Information is needed to determine if a significant interaction exists between tillage and hybrid in maize. Field experiments were conducted in 1982 and 1983 near Lincoln, Nebraska, U.S.A., on an Abruptic Argiaquo11 and in 1983 near Gothenburg, Nebraska, U.S.A., on a Typic Haplustoll under dryland and irrigated conditions, respectively, to evaluate the response of eight hybrids to several tillage practices. Tillage practices studied were moldboard plow, tandem disk, and no-tillage. Tillage practice had a significant effect on only plant emergence at Lincoln during 1983 and dry matter production at Lincoln in 1982 and Gothenburg in 1983. Hybrids differed in plant population at harvest, rate of phenological development, leaf area and dry matter production, and grain yield. A significant till a g e~ hybrid interaction was observed for dry-matter prduction at the tasseling stage at Lincoln during 1983; however, no significant interactions were observed for grain-yield among the hybrids and tillage systems investigated. Results indicate that for the adapted hybrids tested, relative grain-yield comparisons will be maintained with both conservation and conventional tillage practices.

Response of Some Maize Cultivars to Nitrogen Fertilization Under Two Farming Systems

“…The negative effects associated with no-tillage system may be due to the bad soil conditions, which may affect crop growth. These results agreed those obtained by Wilhelm et al (1991) and Sherif et al (1995) .…”

“…Stat., Fac. Agric., Cairo Univ., Giza, Egypt, during 2000 and2001 seasons, to study the effect of nitrogen fertilizer levels on growth, yield and yield components of some maize (Zea mays L.) cultivars grown under two farming systems. The soil texture was clay loam and its chemical analysis is shown in Table (A).…”

“…Sherif et al (1995) found that no-tillage treatments reduced grain yield as compared with conventional tillage. Wilhelm et al (1991) found that tillage practice had a significant effect on plant emergence and on dry matter production. Norwood and Currie (1998) found that maize yields were increased by reduced tillage and no-tillage in 3 out of 4 years whereas they increased sorghum yields in only 1 year.…”

“…Stat., Fac. Agric.,Cairo Univ., during 2000 and2001 seasons to study the effect of nitrogen fertilizer levels on growth, yield and yield components of some maize cultivars under two farming systems. Data revealed that number of days to emergence, plant height, ear height, yield and its components of no-tillage system (NT) were lower than those of conventional system (CT).…”