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Technics for Corn Production ;n Southern Provinces of Vietnam 439Table 1Corn production, yield and cultivated areas of Northern and Southern parts ofVietnam and of some southern provinces in 1992 and 1995.Production Yield Area(1000 tons) (tIha) (1000 ha)1992 1995 1992 1995 1992 1995Whole country 747.9 1177.2 1.56 2.11 478.0 556.8Northern part 519.4 703.9 1.52 1.88 333.9 373.5Southern part 228.5 473.3 1.65 2.58 138.1 183.8Dong Nai Provo 54.6 182.6 1.59 2.95 34.4 62.0An Giang Provo 14.9 57.8 3.31 6.63 4.5 8.8DacLac Provo 44.5 50.6 2.55 2.59 17.5 19.5Lam Dong Prov. 26.4 42.9 1.99 3.55 13.2 12.1Table 2 Dry grain yield and some agronomic characters of newly introduced openpollinated corn varieties tested in Hung Loc Station (DongNai province) from 1961to]964).Variety OriginGrowing Dry grain yield (tlha)% to rainperiod MeanLocal Color(days) 1961 1962 1963 1964Rocamex SouthV520 Amer.95-105 1.9 3.3 3.6 5.1 3.6 171 WhiteBlancoSouthAmer.93-105 2.1 3.9 3.5 4.4 3.5 167 WhiteZorcaCentralAmer.90-98 2.4 3.7 3.6 3.5 3.3 157 YellowGuatemalagoldenThailand 92-98 1.7 3.3 3.0 3.4 3.0 142 YellowAmarilloSouthAmer.93-98 1.8 3.5 2.7 - 2.7 128 YellowPDMS6SouthAmer.93-98 1.5 3.4 2.6 2.8 2.6 124 YellowLocal flint(ck)Vietnam 79-91 1.8 2.1 2.1 2.5 2.1 100 Yellow