| Author | Ha Hoc Ngo |
| Call Number | AIT Thesis no.AE-81-05 |
| Subject(s) | Plant-water relationships
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The present thesis reports water drainage effects at later tillering
on paddy yield and nutrient availability in low land soil in the Red River Delta, VIET-NAM. The 3-season experiments (1978-1980) indicated that with
10-20 t farm yard manure/ha, slight and heavy drainage enriched the root zone with available N, P and K and thus increased rice grain yield by 0.27-0.50 t/ha and 0.31-0.66 t/ha, respectively, and increased
water use efficiency compared with that of continuous flooding. Drainage at late tillering prevented excessive vegetative growth and regulated
competition for assimilates between vegetative and reproductive organs of rice plants at the beginning of the reproductive phase, resulting in a favourable condition for rice grain yield formation. But, if no basal fertilizers are used drainage even was harmful as rice grain yield was
significantly reduced compared with continuous flooding. |
| Year | 1981 |
| 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) | Eppendorfer, W.H.
; |
| Examination Committee(s) | Olesen, Svend Elsnab ;Apichart Anukularmphai; |
| Scholarship Donor(s) | Government of Belgium; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1981 |