1 AIT Asian Institute of Technology

A study of weed control in rainfed rice

AuthorSumarwono, Kristiyo
Call NumberAIT Thesis no. AE-89-50
Subject(s)Rice--Weed control

NoteA thesis submitted in partial fulfillment of the requirement for the degree of Master of Science, School of Environment, Resources and Development
PublisherAsian Institute of Technology
AbstractThis study was conducted to find an appropriate weed control method in rice under rainfed condition s . The use of different rice varieties grown under different methods of planting and weed control treatments were evaluated . The u se of local variety KDM 105 planted in rows sowing with h and weeding increased yield by 24 % over the control. The application of butachlor a t the recommended rate reduced the population of grasses and sedges . The use of 2 ,4- D (dichlorophenoxy acetic acid ) at 21 days after sowing reduced the population of broadleaf weed, but was not effective against grasses and sedges . The local variety (KDM 105) performed better compared to improved variety (RD 23 ) in terms of grain yield, straw yield and number of panicles, however there was a higher percentage of weeds in the grain. Panicumreoens dominated the rice field. This was followed by broadleaf weeds such as Ipomoea aguatica , a nd Me lochia choncorifolia. While sedges were low in population.
Year1989
TypeThesis
SchoolSchool of Environment, Resources, and Development
DepartmentDepartment of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB))
Academic Program/FoSAgricultural and Food Engineering (AE)
Chairperson(s)Waibel, Hermann ;
Examination Committee(s)Upasena, Selawa H. ;Gartner, Joseph A. ;
Scholarship Donor(s)The Government of Australia. ;
DegreeThesis (M.Sc.) - Asian Institute of Technology, 1989


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