| 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 |