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Book The Evaluation of Different Maturity Corn Hybrids and Plant Populations Under Irrigation and Dryland on Two Contrasting Soil Types

Download or read book The Evaluation of Different Maturity Corn Hybrids and Plant Populations Under Irrigation and Dryland on Two Contrasting Soil Types written by Anton John Bockholt and published by . This book was released on 1958 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Corn Grain Yield and Plant Characteristics in Two Water Environments

Download or read book Corn Grain Yield and Plant Characteristics in Two Water Environments written by Brian James Frank and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn (Zea mays L.) yields are often reduced by limited pumping capacity of irrigation wells drawing from the High Plains Aquifer. As a result of decreased well capacities in this region, many irrigation systems no longer have the ability to meet peak irrigation (water) needs during the growing season. The purpose of this study was to measure easily identifiable plant characteristics of corn hybrids and relate those characteristics with the ability to maintain yield under water-limited conditions. This study involved measuring several plant characteristics of 18 corn hybrids grown under irrigated and dryland conditions near Tribune, KS during the growing seasons of 2005, 2006, and 2007. During each year, hot and dry conditions occurred during silking which resulted in large differences, and many poor yields, in the dryland plots. The number of days and growing degree days (GDD) to initiation of silking were the variables most strongly correlated with grain yield in the dryland environment. The shorter the time it took to reach initiation of silking the greater the grain yield. The number of days, or the GDD, to initiation of silking in irrigated environments did not have a significant correlation with corn grain yield. Other characteristics including canopy temperature, PAR (photosynthetically active radiation), color, leaf angle, number of internodes, number of leaves, and leaf N had no significant correlation with corn grain yield for either dryland or irrigated environments in 2005 and 2006. In this study using hybrids with maturity ratings between 98 and 118 d, there were no significant differences in grain yield in the irrigated environment. In the dryland environment, the hybrids used (98 0́3 118 d) in this study resulted in a decrease in grain yield with an increase in maturity. By considering the maturity of a hybrid, a producer will potentially be able to better select a variety that will perform well in a growing season with potential or likely severe water cutbacks as a result of limited water supply or reduced well capacity.

Book How Plant Populations Affect Yields of Corn Hybrids

Download or read book How Plant Populations Affect Yields of Corn Hybrids written by R. L. Vanderlip and published by . This book was released on 1968 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Influence of Planting Date Hybrid Maturity and Plant Population on Production and Quality of Irrigated and Non irrigated Corn for Silage

Download or read book Influence of Planting Date Hybrid Maturity and Plant Population on Production and Quality of Irrigated and Non irrigated Corn for Silage written by D. G. Cummins and published by . This book was released on 1975 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn was grown in the Coastal Plain at Midville, Georgia in 1970, 1971, and 1972 to (1) compare silage production and quality when planted at a normal date (mid-April) with that planted late to coincide with wheat harvest (June 1 ), and (2) to determine how hybrid maturity, plant population, and irrigation influence the response to planting date. The results cam be summarized as follow... 1. Highest mean dry forage yields were obtained from the normal planting date compared to the late date. The use of either short-or full-season hybrids, higher plant population, or irrigation did not over-come the yield loss due to late planting. 2. Forage quality measured by in vitro dry matter digestibility (IVDMD) was higher for the normal planting date as compared to the late date. This was due to higher ear and lower stalk percentages in the early planted forage. IVDMD decreased with increased plant populations at the late planting date in the irrigated experimental due to an increase in stalk content. Ear content was higher in the short-season hybrid and did not decrease as the population increased as compared to the full-season hybrid. 3. Although not copared statistically, mean yields and IVDMD were higher in the irrigated experiment than the non-irrigated experiment. These results indicate that altering management pratices did not improve production and quality of late planted corn to a level comparable to the normal planting date.

Book Dissertation Abstracts International

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1982 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Corn and Grain Sorghum Comparison

Download or read book Corn and Grain Sorghum Comparison written by Yared Assefa and published by Academic Press. This book was released on 2013-12-16 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn and grain sorghum (Sorghum bicolor subsp. bicolor L) are among the top cereal crops world wide, and both are key for global food security. Similarities between the two crops, particularly their adaptation for warm-season grain production, pose an opportunity for comparisons to inform appropriate cropping decisions. This book provides a comprehensive review of the similarities and differences between corn and grain sorghum. It compares corn and sorghum crops in areas such as morphology, physiology, phenology, yield, resource use and efficiency, and impact of both crops in different cropping systems. Producers, researchers and extension agents in search of reliable scientific information will find this in-depth comparison of crops with potential fit in dryland and irrigations cropping systems particularly valuable. - Presents a wide range of points of comparison - Offers important insights for crop decision making

Book Evaluation of Hybrids Planting Dates and Planting Densities on Corn Growth and Yield Under Rainfed Systems in Mississippi

Download or read book Evaluation of Hybrids Planting Dates and Planting Densities on Corn Growth and Yield Under Rainfed Systems in Mississippi written by Matthew W. Hock and published by . This book was released on 2015 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved hybrid genetics and more efficient farming techniques have increased corn (Zea mays L.) production and grain yields for Mid-South farmers. Early planting is one technique to mitigate heat and drought stress that negatively influence grain production. The first objective was: a) determine the effect of early planting on grain yield, b) to determine the effects on physiological characteristics and c) determine if some hybrids are better suited for early planting. Data suggest there were yield advantages for early planted treatments. Starkville 2014 yields exhibited the greatest reduction of .80 Mg ha-1 for each week that planting was delayed. A second objective was: a) determine optimum plant density when planting early, b) determine population effects on physiological characteristics, and c) determine hybrid responses. Hybrids were evaluated at seeding rates ranging from 49,400 to 98,800 plants ha-1. Corn grain yield was maximized at 86, 450 to 98,800 plants ha-1.

Book Maturity Ratings for Corn Hybrids in Minnesota 1954 55

Download or read book Maturity Ratings for Corn Hybrids in Minnesota 1954 55 written by E. H. Rinke and published by . This book was released on 1957 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Plant Populations of the Different Maturity Groups of Corn in Performance Testing

Download or read book Plant Populations of the Different Maturity Groups of Corn in Performance Testing written by Firooz Mirbagheri and published by . This book was released on 1979 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Bibliography of Agriculture

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1974 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Performance of Early maturing Corn Hybrids at Different Plant Populations

Download or read book Performance of Early maturing Corn Hybrids at Different Plant Populations written by Jaime Parra and published by . This book was released on 1984 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Developing Drought and Low N tolerant Maize

Download or read book Developing Drought and Low N tolerant Maize written by G. O. Edmeades and published by CIMMYT. This book was released on 1996 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incidence and intensity of drought and low N stresss in the tropics; Case studies strategies for crop production under drought and low n stresses in the tropics; Stress physology and identification of secondary traits; Physiology of low nitrogen stress; Breeding for tolerance to drought and low n stresses; General breeding strategies for stress tolerance; Progress in breeding drought tolerance; Progress in breeding low nitrogen tolerance; Experimental design and software.