1 AIT Asian Institute of Technology

Water drainage effects at late tillering on paddy yield and nutrient availability in low land soil

AuthorHa Hoc Ngo
Call NumberAIT Thesis no.AE-81-05
Subject(s)Plant-water relationships
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
PublisherAsian Institute of Technology
AbstractThe 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.
Year1981
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)Eppendorfer, W.H.
Examination Committee(s)Olesen, Svend Elsnab ; Apichart Anukularmphai
Scholarship Donor(s)Government of Belgium
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1981


Usage Metrics
View Detail0
Read PDF0
Download PDF0