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SHOOTGRO emphasizes the development and growth of the shoot apex of small-grain cereals such as winter and spring wheat (Triticum aestivum L.) and spring barley (Hordeum vulgare L.). To better incorporate the variability typical in the field, up to six cohorts, or age classes, of plants are followed using a daily time step. Within each plant of a cohort, the appearance of each tiller is simulated, and for each culm (main stem and tillers), the phenological growth stage and appearance, growth, and senescence/abortion of each leaf, internode, spikelet, floret, kernel, rachis, and chaff is simulated. The model has been evaluated under conditions from the Great Plains, Pacific Northwest, South Africa, Italy, and England.
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OMB 0518 - 0032 (02/2022)
According to the Paperwork Reduction Act of 1995, an agency cannot conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a valid OMB control number. The valid OMB control number for this information collection is 0518-0032. The time required to complete this information is estimated to vary from one to five minutes with an average of three minutes per response, including time for reviewing instructions, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Agriculture, Clearance Officer, OIRM, Room 404-W, Washington, DC 20250, and to the Office of Information and Regulatory Affairs, Office of Management and Budget.