Download or read book Influence of Seed Characteristics on the Field Performance of Corn Under Conventional and No tillage Systems written by Lynn Marie Krepsky and published by . This book was released on 1989 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agronomy Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).

Download or read book Reduced Tillage Field Corn Zea Mays L Production in Manitoba written by David Alexander Wall and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted on field corn (Zea mays L.) under various conventional and reduced tillage cropping systems and straw management practices to determine the effect on soil physical properties, crop growth, development and yield. The performance of eight corn hybrids was evaluated under conventional and zero tillage to study the adaptability of hybrids to zero tillage cropping practices. Corn under zero tillage exhibited delays in emergence, silking and maturity, reduced plant populations, dry matter, plant height and grain yields. The negative effects of zero tillage on crop performance were attributed to poorer seed placement and lower soil temperatures. The lower soil temperatures and higher soil water content which occurred under zero tillage were attributed to the presence of a barley straw mulch on the soil surface. The performance of the corn grown under conventional tillage, in which the seedbed had been prepared the previous fall, was superior to all other treatments examined. The superior performance of the fall tillage treatment was considered to have resulted from improved seed placement and greater soil moisture. The removal of the barley straw mulch from the soil surface promoted earlier silking and maturity, increased plant heights, populations and grain yields in corn. The removal of the straw mulch resulted in increased soil temperatures relative to where the straw mulch had been retained. The eight hybrids examined exhibited similar responses to zero tillage during the growing season. At harvest, however, the hybrids exhibited a differential yield response to tillage. Four hybrids; Pioneer 3995, Pride R102, Pride R108 and Pickseed 2322 wee not affected by zero tillage, while the remaining hybrids; Pickseed 2111, Asgrow RX22, Pioneer 3992 and Funks G4065 exhibited reduced grain yields under the zero tillage treatment.

Download or read book Relationship of Corn Seed Vigor to Field Performance in No tillage Systems written by Dennis Alan Wickham and published by . This book was released on 1984 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Conventional Tillage Systems and No tillage Systems on Production of Corn Zea Mays L Oats Avena Sativa L and Alfalfa Medicago Sativa L written by Frank Daryl Morgan Anthony and published by . This book was released on 1984 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Cover Crops on Nutrient Dynamics and Soil Properties in Corn soybean Rotation in Southern Illinois written by Gurbir Singh and published by . This book was released on 2018 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn (Zea mays L.) and soybean ( Glycine max L.) production in the Midwest US can result in significant nutrient leaching to groundwater and surface waters, which contributes to eutrophication and hypoxia in the Gulf of Mexico. A promising strategy to control nutrient leaching and sediment runoff loss during winter fallow period is the use of cover crops (CCs). In southern Illinois, CCs are not widely adopted by farmers due to economic constraints and the lack of scientific data that supports benefits of incorporating CCs into the corn-soybean rotation. This doctoral dissertation addresses the critical question of the feasibility of the use of CCs in southern Illinois and is divided into three overarching research studies with different objectives divided into six research chapters. Research study 1 was a field experiment conducted from 2013 to 2017 to examine the effect of CCs (CC vs noCC) under two tillage systems [(no-tillage (NT) and conventional tillage (CT)] on aboveground plant attributes [dry matter yield, C:N ratio and nitrogen uptake (N uptake)], crop yields, available soil N content and N leaching in the vadose zone. The experimental layout was a randomized design with three rotations including corn-noCC-soybean-noCC [CncSnc], corn-cereal rye (Secale cereale L.) -soybean-hairy vetch (Vicia villosa R.) [CcrShv], and corn-cereal rye-soybean-oats+radish (Avena sativa L. + Raphanus sativus L.) [CcrSor] and two tillage systems. Soil samples collected after corn or soybean harvest and CC termination were analyzed for standard soil fertility parameters. Pan lysimeters installed below the 'A' horizon with depth varying from 22 to 30 cm were used for measuring soil solution nutrient concentration on weekly or biweekly basis depending on the precipitation. In NT system, the corn yield was 14% greater with CcrShv compared to CncSnc, whereas no significant difference existed in corn yield due to CC treatments within CT. Both CC treatments under NT reduced soybean yield by 24 to 27% compared to noCC. The rotations CcrShv and CcrSor with hairy vetch and oats+radish as preceding CCs resulted in 89% (37.73 vs 19.96 kg ha-1) and 68% (33.46 vs 19.96 kg ha-1) more nitrate-N (NO 3-N) leaching than the CncSnc during cash crop season 2015. During the CC season in spring 2016, cereal rye CC in CcrShv and CcrSor reduced the NO 3-N leaching by 84% (0.68 kg ha-1) and 78% (0.63 kg ha-1) compared to the CncSnc, respectively, under the CT system. Overall, our results indicated that the CT system had greater N leaching losses compared to NT system due to higher N availability in the tilled soil profile. The goal of the second research study was to understand the mechanisms of N cycling by CCs. We applied 15N labeled urea fertilizer (9.2% atom) to corn that followed hairy vetch and noCC in May 2017 to evaluate the contribution of fertilizer and soil organic matter to N leaching and quantify the 15N content of surface runoff after storm events. During the 2017 corn season, repeated soil samples were collected and analyzed for 15N fertilizer recovery in soil at three depths. 15N recovery was higher in the corn that had hairy vetch as the preceding CC than the corn that had noCC by 13.13 and 3.68 kg ha-1 on soil sampling events of 7 and 21 days after planting of corn, respectively, at the depth 15-30 cm. Overall, the cumulative loss of 15NO 3-N during corn season 2017 was

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reduced Tillage Field Corn Zea Mays L Production in Manitoba written by David Alexander Wall and published by . This book was released on 1982 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted on field corn (Zea mays L.) under various conventional and reduced tillage cropping systems and straw management practices to determine the effect on soil physical properties, crop growth, development and yield. The performance of eight corn hybrids was evaluated under conventional and zero tillage to study the adaptability of hybrids to zero tillage cropping practices. Corn under zero tillage exhibited delays in emergence, silking and maturity, reduced plant populations, dry matter, plant height and grain yields. The negative effects of zero tillage on crop performance were attributed to poorer seed placement and lower soil temperatures. The lower soil temperatures and higher soil water content which occurred under zero tillage were attributed to the presence of a barley straw mulch on the soil surface. The performance of the corn grown under conventional tillage, in which the seedbed had been prepared the previous fall, was superior to all other treatments examined. The superior performance of the fall tillage treatment was considered to have resulted from improved seed placement and greater soil moisture. The removal of the barley straw mulch from the soil surface promoted earlier silking and maturity, increased plant heights, populations and grain yields in corn. The removal of the straw mulch resulted in increased soil temperatures relative to where the straw mulch had been retained. The eight hybrids examined exhibited similar responses to zero tillage during the growing season. At harvest, however, the hybrids exhibited a differential yield response to tillage. Four hybrids; Pioneer 3995, Pride R102, Pride R108 and Pickseed 2322 wee not affected by zero tillage, while the remaining hybrids; Pickseed 2111, Asgrow RX22, Pioneer 3992 and Funks G4065 exhibited reduced grain yields under the zero tillage treatment.

Download or read book Journal of Production Agriculture written by and published by . This book was released on 1994 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production-oriented information for professional agriculturists.

Download or read book Agronomy News written by and published by . This book was released on 1997 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.

Download or read book Influence of Conventional and No tillage Systems at Different Fertilization Rates and Plant Densities on Corn Yields written by Jesus Alberto Riera and published by . This book was released on 1985 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Tillage and Herbicides on Corn Zea Mays L Production Net Return Weeds and Soil Properties written by Jun Zhang and published by . This book was released on 1992 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corn Zea Mays L Response to Nitrogen Application written by Eddie Ray Watson and published by . This book was released on 1986 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrindex written by and published by . This book was released on 1993 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Environment and Tillage System on the Establishment Development and Yield of Six Short season Corn Hybrids in Northern New York written by Ronald S. Monk and published by . This book was released on 1990 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Fertilizer Placement on Corn and Soybean Growth and Yield Under No tillage and Conventional Tillage Systems written by Saloum S. Sacko and published by . This book was released on 1983 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1987-10 with total page 1238 pages. Available in PDF, EPUB and Kindle. Book excerpt: