136 Nissanka, P.S and Bandara Thilak. 2003. Comparison of Pruductivity of System
of Rice Intensification and Conventional Rice Farming System in the Dry Zone Region of Sri lanka. Departement of Crop Science, Fakulty
of Agriculture, Univercity of Peradeniya, Peradeniya, Sri lanka. Proceedings of 4
th
International Crops Science Congress. 5 p. http:www.pdn.ac.lk
. Email, spnpdn.ac.lk.diakses
tanggal 10 Mei 2006.
Nour, M.A.; A.E. Abd El-Wahab; F.N. Mahrous. 1994. Effect of Water Stress at Different Growth Stage on Rice Yield and Constributing Variables.
Rice research and Training Center. Annual Agronomy Report. Nour, M.A. ; S.A. Ghanem ; A.E. Abd. El. Wahab and A.D. Bastawisi. 1996.
Behavior of Some Rice Cultivars Under Different Water Regimes. In Menofiya. J. Agric. Res 21 4 : 837 – 850.
Ober, E.S; Sharp, R.E, 1998. Proline Accumulation in Maize Zea mays L Primary Roots at Low Water Potensial. Plant Physiol. 105: 981-983.
Ohwaki Y, 1967. Growth of Rice Coleoptiles in Relation to Oxygen
Concentrations. Sci. Rep. Tohoku Univ. Ser. IV Biol. 33, 1-5.
Öpik H, 1973. Effect of Anaerobiosis on Respiratory Rate, Cytochrome Oxidase Activity and Mitochondrial Structures in Coleoptiles of Rice Oryza
sativa
L.. J. Cell Sci. 12, 725-739.
Pahruddin, A.; Maripul; dan Dida, R.P., 2004. Cara Tanam Padi Sistem Legowo Mendukung Usahatani Di Desa Bojong, Cikembar, Sukabumi. Buletin
Teknik Pertanian Vol. 9, Nomor 1, 2004
Patrick, JR W.H dan C.N Reddy. 1978. Chemical Changes in Rice Soil. In : Soils and Rice. Los Banos. Laguna. Philippines : The International Rice
Research Institute.
Ponnamperuma F.N, 1972. The Chemistry of Submerged Soils. Adv. Agron. 24,
29-96. Prasad ,P.V.D.; Potluri, S.D.F., 1999. Influence of Proline and Hydroxyproline on
Salt-Stresses Axillary Bud Cultures of Two Varieties of Potato Solanum tuberosum. In Vitro Cell Dev Biol Plant 32: 47-50.
Purba, D., 1993. Effect of Deep Water on Tiller and Yield of Rice. Tsukuba, Japan: TIATC JICA. pp. 61–74. Report of Experiments.
Quayyum, H.A.; Gomosta, A.R.; Hoque, M.Z. 1981. Effect of Seedling Age on Total Plant Elongation and Internode Elongation of Deep water Rice.
International Rice Research Newsletter 6 5: 9-10.
Universitas Sumatera Utara
137 Ranson S.L. and Parija B, 1964. Experiments on Growth in Length of Plant
Organs II. Some Effects of Depressed Oxygen Concentrations. Journal of Experimental Botany 6
, 80-93. Rafaralahy, S, 2002. An NGO Perspective on SRI and Its Origins in Madagascar.
Assessments of The System of Rice Intensification SRI :Proceeding of an International Conference held in Sanya, China, April 1-4 2002.
Ithaca NY : Cornell International Institute for Food, Agriculture and Development.
Raven JA., 1996. Into the Voids: The Distribution, Function, Development and
Maintenance of Gas Spaces in Plants. Annals of Botany 78: 137–142
.
Rhem. 1989. Handbuch der Landwirtschaft und Ernaehrung in den Entwicklungslaender. Ulmer Verlag, Stutteart. Hal 13-31.
Saab, IN and Sachs, MM. 1996. Plant Physiol 112:385-391. Samarajeewa P.K.; Barrero R.A.; Umeda-Hara C.; Kawai M., and Uchimiya H,
1999. Cortical Cell Death, Cell Proliferation, Macromolecular Movements and rTip1 expression Pattern in Roots of Rice Oryza
sativa
L. Under NaCl Stress. Planta 207, 354-361.
