Challenges in bermudagrass production in the southeastern USA  

作　　者：Lisa L.Baxter William F.Anderson Roger N.Gates Esteban F.Rios Justin C.Burt 

机构地区：[1]Department of Crop and Soil Science,University of Georgia,Tifton,Georgia,USA [2]Crop Genetics and Breeding Research Unit,USDA-ARS,Tifton,Georgia,USA [3]Technical Advisor,Southeast Agriseeds,Rome,Georgia,USA [4]Forage Breeding and Genetics,Agronomy Department,University of Florida,Gainesville,Florida,USA

出　　处：《Grassland Research》2024年第2期123-131,共9页草地研究（英文）

基　　金：National Institute of Food and Agriculture,Grant/Award Number:2017-70005-27089;Georgia Seed Development;Georgia Beef Commission。

摘　　要：Bermudagrass(Cynodon dactylon(L.)Pers.)is one of the primary perennial forages in the southeastern USA.Newer hybrid cultivars have superior production and nutritive value compared to common ecotypes.However,there are many challenges facing bermudagrass production in the region.First,the bermudagrass stem maggot(BSM;Atherigona reversura Villeneuve)has severely damaged bermudagrass throughout the region.Strategically timed pyrethroid applications significantly reduce adult BSM populations,but efforts are needed to develop integrated pest management plans.Second,an increasing number of producers are noting challenges with green-up following winter dormancy.This may be attributed to disease,unbalanced soil fertility,and weed pressure.Perhaps one of the most limiting factors for continued production is the deficit of sprigs and trained personnel to sprig hybrid bermudagrasses.This research is critically important as the need for cold-tolerant bermudagrass is increasing as tall fescue(Lolium arundinaceum(Schreb.)S.J.Darbyshire)is declining due to changes in temperature and precipitation throughout the northern parts of the region.Plant breeders are investigating hybrid bermudagrass at latitudes>35°with respect to freeze or cold tolerance.Despite the many challenges facing hybrid bermudagrass in the southeastern USA,researchers are working to ensure its persistence,productivity,and availability for the future.

关 键 词：bermudagrass stem maggot cold tolerance CYNODON green-up HAY 

分 类 号：S812[农业科学—草业科学]