Effect of planting date on growth, development, and yield of grain sorghum hybrids

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dc.contributor.author Diawara, Bandiougou
dc.date.accessioned 2012-06-19T17:19:08Z
dc.date.available 2012-06-19T17:19:08Z
dc.date.issued 2012-06-19
dc.identifier.uri http://hdl.handle.net/2097/13944
dc.description.abstract 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. en_US
dc.description.sponsorship INTSORMIL, USAID Mali mission, Malian government, Malian Institute of Rurale Economy, Kansas State University Department of Agronomy en_US
dc.language.iso en_US en_US
dc.publisher Kansas State University en
dc.subject Sorghum en_US
dc.subject Hybrid en_US
dc.subject Planting date en_US
dc.subject Growth en_US
dc.title Effect of planting date on growth, development, and yield of grain sorghum hybrids en_US
dc.type Thesis en_US
dc.description.degree Master of Science en_US
dc.description.level Masters en_US
dc.description.department Department of Agronomy en_US
dc.description.advisor Scott A. Staggenborg en_US
dc.subject.umi Agronomy (0285) en_US
dc.date.published 2012 en_US
dc.date.graduationmonth August en_US

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