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A study of weed control in rainfed rice | |
Author | Sumarwono, Kristiyo |
Call Number | AIT Thesis no. AE-89-50 |
Subject(s) | Rice--Weed control |
Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science, School of Environment, Resources and Development |
Publisher | Asian Institute of Technology |
Abstract | This 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. |
Year | 1989 |
Type | Thesis |
School | School of Environment, Resources, and Development |
Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
Academic Program/FoS | Agricultural and Food Engineering (AE) |
Chairperson(s) | Waibel, Hermann ; |
Examination Committee(s) | Upasena, Selawa H. ;Gartner, Joseph A. ; |
Scholarship Donor(s) | The Government of Australia. ; |
Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1989 |