Population dynamics of weeds in oil palm (Elaeis guineensis Jacq.) circle weeding area affected by herbicide application

International Conference on Agriculture, Environment, and Food Security

农业科学;生态环境科学

Sidik, S.^1 ; Purba, E.^1 ; Yakub, E.N.^1

Department of Agrotechnology, Faculty of Agriculture, Universitas Sumatera Utara, Medan

20155, Indonesia^1

关键词: Block designs;    Dry weight;    Elaeis guineensis;    Glyphosates;    Herbicide application;    Manual weeding;    Weed seedbank;    Weed species;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/122/1/012069/pdf
DOI  :  10.1088/1755-1315/122/1/012069

来源: IOP

【 摘 要 】

Weed problems in oil palm field were mainly overcomed by herbicide application. The application certain herbicides may lead to rapid population dynamic of certain species due to their different response to herbicides. Some species may less susceptible to certain herbicide whereas other species more susceptible. The objective of this study was to determine the population dynamic of weed species in circle weeding of oil palm in Serdang Bedagai, North Sumatra. Six treatments using glyphosate singly and mixture compared with manual weeding were evaluated for weed control. The treatments were arranged in a randomized block design with four replicates. Each treatment consisted of four circle weedings. The results showed that glyphosate 720 g a.i/ha + indaziflam 50 g a.i/hareduced seedbank and regrowth of weeds. Up to 12 weeks after application glyphosate 720 g a.i/ha + indaziflam 50 g a.i/ha is 29.46% total weeds dry weight compared to manual weeding. The effect of herbicide application on changes on the weed composition and weed seedbank are affected by the characteristic of herbicides and weed response to herbicide application.