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ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Wind Erosion and Water Conservation Research Research Publications at this Location





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Title:   Author  item
                                            Gitz, Dennisitem
                                            Baker, Jeffreyitem
                                            Mahan, Jamesitem
                                            Payton, Paxton
  Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 10/5/2008
                                    Publication  Date: 10/8/2008
                                    Citation: Gitz, D.C., Baker, J.T., Mahan, J.R., Payton, P.R. 2008. Field validation of a metabolically based dynamic cotton seedling emergence model[abstract]. ASA-CSSA-SSSA Joint Annual Meeting. Houston, Texas. October 5-9, 2008. Paper No. 645-4Interpretive Summary:
                                Technical Abstract: A model for cotton seedling emergence based upon enzyme kinetics of malate synthase (MaGi) was evaluated in the field. Cotton (Gossyptim hirsuitum) cvars. FM958, DP 444, FM 800, and PM 2145 were planted weekly at a depth of 5 cm in fields at Big Spring and Lubbock TX. Soil temperatures at seed depth, and seedling emergence were recorded. Time to 50% emergence was calculated and compared to predicted emergence using both MaGi and a commonly employed degree day model based on heat unit accumulation (DD 60). Modeled time to emergence using DD 60 and MaGi were comparable to field values.


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