{"title":"Pink Purslane (Portulaca pilosa) Control with Postemergence Herbicides","authors":"Nicholas J. Shay, E. Prostko","doi":"10.1017/wet.2024.28","DOIUrl":null,"url":null,"abstract":"\n Pink purslane is often ranked as one of the most troublesome weeds in vegetable production systems in Georgia. Pink purslane encroachment along the field edges and in-field of agronomic crops has recently increased. Postemergence (POST) herbicides are an effective component of agronomic crop weed management. However, little research has addressed pink purslane control in agronomic crops. Therefore, greenhouse and field studies were conducted from 2022 to 2023 in Tifton, Georgia, to evaluate the response of pink purslane to POST herbicides commonly used in agronomic crops. Greenhouse screening provided preliminary evidence whereby 13 of the 21 POST herbicides evaluated provided ≥ 80% above-ground biomass reductions. These 13 herbicides were then used for field studies. Results from the field studies, pooled across two locations, indicated only 3 of the 13 herbicides provided above-ground biomass reductions ≥ 70% compared to the non-treated control. These herbicides included atrazine at 1682 g ai ha-1, glufosinate at 656 g ai ha-1, and lactofen at 219 g ai ha-1 with 79%, 70%, and 83% biomass reduction, respectively (P < 0.05). This research suggests that many of the POST herbicides used in agronomic crops will not effectively control pink purslane. Thus, when trying to manage pink purslane with POST herbicides in agronomic crops, growers should plant crops/cultivars tolerant of either atrazine, glufosinate, and/or lactofen.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Weed Technology","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1017/wet.2024.28","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Pink purslane is often ranked as one of the most troublesome weeds in vegetable production systems in Georgia. Pink purslane encroachment along the field edges and in-field of agronomic crops has recently increased. Postemergence (POST) herbicides are an effective component of agronomic crop weed management. However, little research has addressed pink purslane control in agronomic crops. Therefore, greenhouse and field studies were conducted from 2022 to 2023 in Tifton, Georgia, to evaluate the response of pink purslane to POST herbicides commonly used in agronomic crops. Greenhouse screening provided preliminary evidence whereby 13 of the 21 POST herbicides evaluated provided ≥ 80% above-ground biomass reductions. These 13 herbicides were then used for field studies. Results from the field studies, pooled across two locations, indicated only 3 of the 13 herbicides provided above-ground biomass reductions ≥ 70% compared to the non-treated control. These herbicides included atrazine at 1682 g ai ha-1, glufosinate at 656 g ai ha-1, and lactofen at 219 g ai ha-1 with 79%, 70%, and 83% biomass reduction, respectively (P < 0.05). This research suggests that many of the POST herbicides used in agronomic crops will not effectively control pink purslane. Thus, when trying to manage pink purslane with POST herbicides in agronomic crops, growers should plant crops/cultivars tolerant of either atrazine, glufosinate, and/or lactofen.
期刊介绍:
Weed Technology publishes original research and scholarship in the form of peer-reviewed articles focused on understanding how weeds are managed.
The journal focuses on:
- Applied aspects concerning the management of weeds in agricultural systems
- Herbicides used to manage undesired vegetation, weed biology and control
- Weed/crop management systems
- Reports of new weed problems
-New technologies for weed management and special articles emphasizing technology transfer to improve weed control
-Articles dealing with plant growth regulators and management of undesired plant growth may also be accepted, provided there is clear relevance to weed science technology, e.g., turfgrass or woody plant management along rights-of-way, vegetation management in forest, aquatic, or other non-crop situations.
-Surveys, education, and extension topics related to weeds will also be considered