Ecofarming: Selecting Corn and Grain Sorghum Hybrids, Planting Dates, and Planting Rates in a Winter Wheat--Row Crop--Fallow Rotation PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Features the full text of "Ecofarming: Selecting Corn and Grain Sorghum Hybrids, Planting Dates, and Planting Rates in a Winter Wheat--Row Crop--Fallow Rotation," written by R.N. Klein, G.A. Wicks, and P.T. Nordquist and presented online by the Cooperative Extension within the Institute of Agriculture and Natural Resources of the University of Nebraska at Lincoln. Discusses selecting corn and sorghum hybrids and factors that affect yield and plant populations.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Features the full text of "Ecofarming: Selecting Corn and Grain Sorghum Hybrids, Planting Dates, and Planting Rates in a Winter Wheat--Row Crop--Fallow Rotation," written by R.N. Klein, G.A. Wicks, and P.T. Nordquist and presented online by the Cooperative Extension within the Institute of Agriculture and Natural Resources of the University of Nebraska at Lincoln. Discusses selecting corn and sorghum hybrids and factors that affect yield and plant populations.
Author: Bandiougou Diawara Publisher: ISBN: Category : Languages : en Pages :
Book Description
In Kansas, productivity of grain sorghum [Sorghum bicolor (L.) Moench] is affected by weather conditions at planting and during pollination. Planting date management and selection of hybrid maturity group can help to avoid severe environmental stresses during these sensitive stages. The hypothesis of the study was that late May planting improves grain sorghum yield, growth and development compared with late June planting. The objectives of this research were to investigate the influence of planting dates on growth, development, and yield of different grain sorghum hybrids, and to determine the optimal planting date and hybrid combination for maximum biomass and grains production. Three sorghum hybrids (early, medium, and late maturing) were planted in late May and late June without irrigation in Kansas at Manhattan/Ashland Bottom Research Station, and Hutchinson in 2010; and at Manhattan/North Farm and Hutchinson in 2011. Data on leaf area index, dry matter production, harvest index, yield and yield components were collected. Grain yield and yield components were influenced by planting date depending on environmental conditions. At Manhattan (2010), greater grain yield, number of heads per plant, harvest index, and leaf-area were obtained with late-June planting compared with late May planting, while at Hutchinson (2010) greater yield was obtained with late May planting for all hybrids. The yield component most affected at Hutchinson was the number of kernels panicle-1 and plant density. Late-May planting was favorable for late maturing hybrid (P84G62) in all locations. However, the yield of early maturing hybrid (DKS 28-05) and medium maturing hybrid (DKS 37-07) was less affected by delayed planting. The effects of planting dates on growth, development, and yield of grain sorghum hybrids were found to be variable among hybrid maturity groups and locations.
Author: Alassane Maiga Publisher: ISBN: Category : Languages : en Pages :
Book Description
Sorghum [Sorghum bicolor (L.) Moench] is a relatively drought- and heat-tolerant cereal crop. Global demand and consumption of agricultural crops for food, feed, and fuel is increasing at a rapid pace. To satisfy the growing worldwide demand for grain, production practices must be well optimized and managed. The objectives of the present study were: to optimize sorghum production by determining the best management practices (planting date, row spacing, seeding rate, hybrid maturity) for growth and yield, to evaluate the agronomic responsiveness of grain sorghum genotypes to nitrogen (N) fertilizer and to develop a partial financial budget to N fertilizer application based on best management practices. In order to meet these objectives, field experiments were conducted in 2009, 2010 and 2011 at Manhattan, Belleville, Ottawa, Hutchinson, Hays, at KSU Experiment Stations and Salina, and Randolph at Private Farms. Results indicated that early planting date (late May) and narrow row spacing (25 cm) providing the most equidistant spacing, produced better plant growth, light interception, yield components (number of grains per panicle, 300-grain weight), and biological yield. Results indicated that with increasing N rate, there was a proportional increase in chlorophyll SPAD meter reading, leaf color scores and number of green leaves. There was a significant difference among hybrids for N uptake, NUE and grain yield. However, there was no effect of N and no interaction between N and hybrid on grain yield. Over all, the genotypes with high NUE also had higher grain yield. Economic analysis using partial budget indicated that all N levels had positive gross benefit greater than control at all locations. However, the response varied across locations. Our research has shown that sorghum responds to changing management practices and opportunities exist to increase grain yield by optimizing planting date, seeding rate, row spacing, N application and selection of genotypes.
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Author: Library of Congress. Exchange and Gift Division
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Author: Soil and Water Conservation Society (U.S.)
Author: Larry Gene Heatherly
Author: Paul W. Unger
Author: Bandiougou Diawara
Author: Alassane Maiga
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