Rice development and some soil parameters as influenced by nitrogen application | |
| Author | Kittichai Krataithong |
| Call Number | AIT RSPR no. AE-85-03 |
| Subject(s) | Soils--Nitrogen content Plant-soil relationships Rice |
| Note | A Research Study 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 | The influences of nitrogen fertilizer on rice development and some soil parameters was studied by cultivating rice with 5 different rates of nitrogen fertilizer: 0, 30, 60, 90 and 120 kgN/ha. Rice Responded well to increasing nitrogen levels, as plant height, number of tillers, dry mater yields, nitrogen concentration and nitrogen uptake of rice increased. Grain yield (14% M.C.) increased from 3.41 t/ha without N to 6.96 t/ha with 120 kg N/ha. Nitrogen concentration of rice plants from 18 to 74 days after transplanting varied between 2.64 and o.53, of straw at harvesting between 0.53 and 0.65 and of grain between 1.06 and 1.15% of dry matter. The different levels of nitrogen applied did not affect the pH or electrical conductivity of soil and water. Increasing the level of nitrogen application increased the nitrogen content in soil. Ammonium and nitrate -N content of soil varied between 0.76 and 3.08 and between 0.40 and 1.72 mg/100g soil respectively. The nitrogen concentration in plant and soil decreased with time after transplanting. |
| Year | 1985 |
| Type | Research Study Project Report (RSPR) |
| 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) | Eppendorfer, W.H. |
| Examination Committee(s) | Jensen, Jens Raunso ;Apisit Eiumnoh |
| Scholarship Donor(s) | US/ASEAN |
| Degree | Research Studies Project Report (M. Sc.) - Asian Institute of Technology, 1985 |