| Author | Vasanthan, Sumithrai |
| Call Number | AIT Thesis no. AE-89-59 |
| Subject(s) | Corn--Fertilizers
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree
of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A field experiment with maize was conducted in ALWDP field
of Asian Institute of Technology, Bangkok during January - April
1989. Combinations of three levels of Nitrogen with three levels
Phosphorus were given at planting time and later top dressings
were done.
The above ground part of the plants were sampled and analyzed for N and P during the growth period and after having corrected the concentration of these nutrients to a fixed Dry Matter
weight level of 5 g per plant, these data formed the basis of the
development of quantitative evaluation and control of young maize
plant.
The results obtained from this experiment showed similarity
·of results with Krishda (1988) and Lawongsa (1 979 ) . New areas
were covered by this present study in the correction model thus
widening this model. Further , preliminary diagnosis and yield
prognosis models were developed. A good agreement between
predicted and experiment a 11 y obtained y i e 1 d showed the
reliability and correctness of the models.
Even with three plants per hill, good cobs and high yield
were obtained at higher level of fertilizer application . These
results encourage for further studies to determine the maximum
plant population which can give higher yield with good quality.
Maximum grain yield obtained in this study was 6. 9 t/ha
(Treatment : Basal - 200 N & lOOP kg/ha, Today 400 N & 340 P
kg/ha) . No yield was obtained in the plants which did not have P
application. |
| 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) | Nielsen, Jens Moller
; |
| Examination Committee(s) | Loof, Rainer ;Goto, A. ;Murty, V.V.N ; |
| Scholarship Donor(s) | The Government of Denmark. ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1989 |