| Author | Aye, Tin Maung |
| Call Number | AIT Thesis no. AE-94-38 |
| Subject(s) | Corn--Fertilizers
|
| Note | A Thesis submitted in partial fulfillment of the requirements of the Degree of Master of
Science, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | In a field trial on an acid sulphate soil, green manures gliricidia and leucaena, animal
manures fresh goat manure and composted goat manure, and urea were applied as an N source
for maize (Zea mays L. KTX 3501) at the rates of 25 and 50 kg N ha-1
• Growth of maize was
determined largely by elevation of the plot. Elevation determined the degree of water-logging
after irrigation. Crop growth and yield was strongly correlated with elevation. None of the N
materials applied at 25 kg N ha- 1 supplied enough N to the crop to influence yield. Gliricidia
and fresh goat manures at 50 kg N ha·1 resulted in growth and yield responses in maize similar
to the response to added urea. Gliricidia applied at 50 kg N ha-1 increased plant height, dry
matter accumulation, dry matter yield and N yield of maize compared with no N application.
There were no significant affects of any material at either rate of application on net N
mineralization, apparent N recovery or soil total N at harvest. Chemical constituents of manures
such as concentration of N, lignin, polyphenol, and ratio of C:N, lignin:N, polyphenol:N, and
lignin+polyphenol:N neither correlated with total dry matter yield nor with net N mineralization
and apparent N recovery. The practice of using green manure as an alternative source of N
fertilizer for maize is possible on acid sulphate soils in Thailand. |
| Year | 1994 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Murali, N. S.
|
| Examination Committee(s) | Upasena, Selawa H. ;Little, David C. ;Myers, R.J.K.
|
| Scholarship Donor(s) | Government of Japan |
| Degree | Thesis (M.Sc) - Asian Institute of Technology, 1994 |