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035 _a.b10260948
099 9 _aAIT Thesis no. 1237
100 0 _aSumalee Anupotmontree
245 1 0 _aEvaluation of nutritional status of paddy
260 _aBangkok :
_bAsian Institute of Technology,
_c1977
300 _a71 p.
490 1 _aThesis ;
_vno. 1237
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand
502 _aThesis (M.Sc. ) - Asian Institute of Technology, 1977
520 _aThe use of plant analysis as an aid in diagnosing nutritional disorders in rice has been proved a reliable method. A field experiment with paddy in the Central Plain of Thailand was designed to study the distribution of N, P, K, Na, Ca, Mg, Fe, Mn, Zn and Cu in rice plant parts periodically when grown under various combination rates of N and P application. The aim was to develop methods of quantitative diagnosis of the nutritional status of the young plant and prognosis of final yield, based on concentrations of nutrients at a fixed dry matter weight level of aerial parts of the plant and reference values for absolute and relative optimal concentration of the various nutrients. The development of the method followed the same principles as used in a recently developed fertilization system in Europe. ~he relationships be tween: (1) concentrations of various nutrients and dry matter weight of the plant, (2) grain yield at maturity and concentrations of various nutrients of the young plant, (3) concentrations of various nutrients and N concentration, and (4) concentrations of various nutrients and P concentration were taken into consideration. The similarity of the curves in these relationships with those found in various crops in Europe, indicated the possibility of transferring the European fertilization system to paddy cultivation in Southeast Asia.
650 0 _aRice research
650 0 _aPlants
_xNutrition
700 1 _aNielsen, Jens Moller,
_eChairperson
700 0 _aPaiboon Prabuzdham,
_eExamination Committee
710 2 _aHolmberg, Soren,
_eExamination Committee
710 2 _aGovernment of the United Kingdom,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. 1237
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B23392
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