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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
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| 0 | PI 687328 | 'Impact' | Digitaria ciliaris (Retz.) Koeler | Oklahoma, United States | PVPO | | Not Available | 2018 | DEVELOPED | | | | | | Cultivar | Impact crabgrass [Digitaria ciliaris (Retz.) Keeler], was developed by the Noble Research Institute, LLC and released in 2016. Selections were made from 'Red River' by recurrent phenotypic selection for late flowering and high individual plant yield. In trials in Ardmore, OK during 2014 and 2015, Impact headed significantly later than Red River and the earlier maturing crabgrass cultivar Quick-n-Big. This later maturity produced numerically higher in vitro true dry matter digestibility than Red River and Quick-n-Big (69. 7% vs. 68.5% and 66.5%, respectively, across 11 harvests) and lower neutral detergent fiber (63.5% vs. 65.4%) than Quick-n-Big. In Oklahoma, there were no consistent differences in monthly or total dry matter yields when Impact was compared to Red River (Impact ranged from 9,150 to 19,746 kg ha, depending on year and location), but was higher in yield during most late season harvest dates (mid-July-early October) compared to Quick-n-Big. At Vashti, TX during 2014, Impact produced significantly more monthly forage and total dry matter yield than both Red River and Quick-n-Big. In Mississippi and Tennessee, cultivar yields were similar to Oklahoma results. Beef cattle demonstrated average daily gains of 0.95 kg and total season gains of 364 kg ha. Impact crabgrass should be broadly adapted as an annual warm season pasture throughout the south-central and southeastern USA. | 1963313 | PI 687328 |