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008			110910s1986 th uu|m rtt 0| a1eng d
035			_a.b10177619
099		9	_aAIT Thesis no. AE-86-02
100	1		_aCaranguian, Lorenzo M.
245	1	0	_aCrop development and microclimate in wetland rice
260			_aBangkok : _bAsian Institute of Technology, _c1986
300			_a75 p.
490	1		_aThesis ; _vno. AE-86-02
500			_aA research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1986
520			_aIn 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.
650		0	_aRice _xPlanting
650		0	_aCrops and climate
700	1		_aJensen, Jens Raunso, _eChairperson
700	1		_aNielsen, Jens Moller, _eExamination Committee
700	1		_aRahman, Md. Ataur, _eExamination Committee
710	2		_aCIDA-BBDP, Canada, _eScholaship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. AE-86-02
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B19564
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