Crop development and microclimate in wetland rice | |
| Author | Caranguian, Lorenzo M. |
| Call Number | AIT Thesis no. AE-86-02 |
| Subject(s) | Rice--Planting Crops and climate |
| Note | A research study 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 | In this study, three different climatic environments to which rice was exposed were evaluated, and the corresponding effects they gave rise to on crop growth and development. Considering climate as the only limiting factor to crop growth and deve lopment in this study, an average diurnal temperature of 27 .2°, 28.51°, and 28.70 °C, and an average so lar radiation of 18.01, 18.21, and 17.96 MJ/sq. m/day resulted to an overall growth duration of 114, 117, and 124 days from seeding to harvesting for crops 1, 2, and 3, respectively. The "Accumulative Temperature Units " or "Degree Day" concept was found applicable to assess temperature's influence on growth duration. With this concept, growth durations decreased with temperature at a range of 20-29°, 20-30° , and 27-28 °C during the vegetative , reproductive and ripening stages, respectively. Rice is most critical to mini mum temperatures be low 20 °C during tillering. During the vegetative stage, solar radiation negatively correlates with yield and dry matte r production, but this has positive effects during the reproductive and ripening stages. Rice performs best in terms of its grain yield and yield components at an accumulated so lar radiation of 979 MJ/sq. m during the reproductive and ripening stages, and at an average diurnal temperature of 28 . 51 °C. |
| Year | 1986 |
| 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) | Jensen, Jens Raunso |
| Examination Committee(s) | Nielsen, Jens Moller ;Rahman, Md. Ataur |
| Scholarship Donor(s) | CIDA-BBDP, Canada |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1986 |