{"title":"除草剂在加州旱地多年生牧草上的应用提高了饲料产量和作物盖度","authors":"Josh Davy , Ryan Hill , Larry Forero","doi":"10.1016/j.rama.2025.07.009","DOIUrl":null,"url":null,"abstract":"<div><div>Summer dormant perennial grasses in the annual rangelands of California’s foothills must be managed to maintain productivity. Weed invasion can reduce forage quality and stand persistence and information is lacking on best practices for weed management. Trials were established to assess the effects of indaziflam, rimsulfuron, and aminopyralid herbicides on nine perennial grass species. Herbicide treatments were applied seven years after planting and effects on crop coverage and forage biomass production were evaluated for two growing seasons. Treatment effects on weed populations, perennial grass coverage, and forage biomass varied by planted species. Generally, medusahead invasion was promoted by rimsulfuron treatments, yellow star-thistle was only abundant in the unplanted control, and hare barley was reduced by aminopyralid and indaziflam treatments. The lowest perennial grass coverage was typically observed in the untreated control and the lowest biomass was typically associated with indaziflam treatments. Coverage of wheatgrass and orchard grass varieties was improved by indaziflam treatments. Coverage of Harding grass varieties tended to be greatest in plots treated with rimsulfuron and the highest overall biomass and coverage was achieved in \"Perla\" koleagrass treated with 70 g ai ha<sup>-1</sup> rimsulfuron. Aminopyralid treatments resulted in variable crop coverage effects, but often improved forage biomass through promotion of annual ryegrass.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"103 ","pages":"Pages 78-82"},"PeriodicalIF":2.4000,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Herbicide Applications in California Dryland Perennial Grasses Improve Forage Yield and Crop Coverage\",\"authors\":\"Josh Davy , Ryan Hill , Larry Forero\",\"doi\":\"10.1016/j.rama.2025.07.009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Summer dormant perennial grasses in the annual rangelands of California’s foothills must be managed to maintain productivity. Weed invasion can reduce forage quality and stand persistence and information is lacking on best practices for weed management. Trials were established to assess the effects of indaziflam, rimsulfuron, and aminopyralid herbicides on nine perennial grass species. Herbicide treatments were applied seven years after planting and effects on crop coverage and forage biomass production were evaluated for two growing seasons. Treatment effects on weed populations, perennial grass coverage, and forage biomass varied by planted species. Generally, medusahead invasion was promoted by rimsulfuron treatments, yellow star-thistle was only abundant in the unplanted control, and hare barley was reduced by aminopyralid and indaziflam treatments. The lowest perennial grass coverage was typically observed in the untreated control and the lowest biomass was typically associated with indaziflam treatments. Coverage of wheatgrass and orchard grass varieties was improved by indaziflam treatments. Coverage of Harding grass varieties tended to be greatest in plots treated with rimsulfuron and the highest overall biomass and coverage was achieved in \\\"Perla\\\" koleagrass treated with 70 g ai ha<sup>-1</sup> rimsulfuron. Aminopyralid treatments resulted in variable crop coverage effects, but often improved forage biomass through promotion of annual ryegrass.</div></div>\",\"PeriodicalId\":49634,\"journal\":{\"name\":\"Rangeland Ecology & Management\",\"volume\":\"103 \",\"pages\":\"Pages 78-82\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-08-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rangeland Ecology & Management\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S155074242500096X\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rangeland Ecology & Management","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S155074242500096X","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Herbicide Applications in California Dryland Perennial Grasses Improve Forage Yield and Crop Coverage
Summer dormant perennial grasses in the annual rangelands of California’s foothills must be managed to maintain productivity. Weed invasion can reduce forage quality and stand persistence and information is lacking on best practices for weed management. Trials were established to assess the effects of indaziflam, rimsulfuron, and aminopyralid herbicides on nine perennial grass species. Herbicide treatments were applied seven years after planting and effects on crop coverage and forage biomass production were evaluated for two growing seasons. Treatment effects on weed populations, perennial grass coverage, and forage biomass varied by planted species. Generally, medusahead invasion was promoted by rimsulfuron treatments, yellow star-thistle was only abundant in the unplanted control, and hare barley was reduced by aminopyralid and indaziflam treatments. The lowest perennial grass coverage was typically observed in the untreated control and the lowest biomass was typically associated with indaziflam treatments. Coverage of wheatgrass and orchard grass varieties was improved by indaziflam treatments. Coverage of Harding grass varieties tended to be greatest in plots treated with rimsulfuron and the highest overall biomass and coverage was achieved in "Perla" koleagrass treated with 70 g ai ha-1 rimsulfuron. Aminopyralid treatments resulted in variable crop coverage effects, but often improved forage biomass through promotion of annual ryegrass.
期刊介绍:
Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes.
Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.