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Cassava is considered as the 3^rd rank of food crops in Vietnam. The total cultivated area and productivity of cassava have significantly increased up to now. Fresh cassava root production roughly obtained 9 million tones annually. Average cassava productivity gained 16 t /ha including  3.36 t of its root peels (RPs) as its by-products.

Nanjing Agricultural University

Supervised by Professor Wan Jianmin

Rice (Oryza sativa L.) is the staple food for more than 50% of the world’s population，although insect pests are the major biotic constraints to production of this crop.

Ngoc Tan Nguyen, , Neng-Wen Lo, , Sing-Ping Chuang, Ya-Lan Jian, and Jyh-Cherng Ju

Depar tment of Animal Science, National Chung Hsing University, 250 Kuok uang Road, Taichung 402, Taiwan, ROC,

Agricultural Biotechnology Center, Inst itute of Agricultural Sciences for Southern Vietnam, 121 Nguyen Binh Khiem

The study aims at determining the apparent digestibility energy and amino acid in Yorkshire pig at different stages such as gilt, pregnant sow, lactating sow, young boar and working boar.

A thesis submitted for the Doctor of Philosophy degree

at the University of New England, Armidale, NSW, Australia

November, 2011

The most important research findings relate to 1) the importance of vertical integration under contract farming from in agriculture in general and shrimp production in particular; 2) the shrimp production in the world, especially in Vietnam; 3) the flow of shrimp in MRD and farmers production affectivity; 4) the vertical integration of farmers under contract farming form with a providing of social and technical barriers that affect ability of farmers to integrate in the shrimp value chain;

The study aims at determining the pathogen causing ratoon stunt disease (RSD) via morphological, biochemical and molecular properties, and suggesting the appropriate management especially in seed multiplication.

In SC medium plus nalidixic acid at 10µg/ml, the colony diameters obtained 0.19 mm (varied from 0.09 mm to 0.30 mm) withouth pigment or with lightly white colour.Catalase reaction was positive but negative oxydase and red methyl reactions

Ea Sup district, Dak Lak province is mountainous area, where there are being settled by many ethnic minority people. Cereal cultivation is the main production with rice accounting for 50% of cultivated area which has varied from 11 to 14 thousand ha in recent years.

Drought stress that causes a significant reduction in maize productitivity, addresses the unpreditable forecast on incidence, severity level and occurrence frequences. Therefore, drought tolerance breeding on maize hybrids has always become an interest subject to be discussed. Otherwise, planting density and fertilizer levels are considered as the key factors to mainly affect maize productivity. Optimum planting density and appropriaate fertilizer application are essential to offer desirable grain yield.

Information on new findings of the doctoral thesis: Title of the research “Studying the growth, development capacities and technical measures to increase yields, qualities of some exotic orchid cultivars (Cattleya, Dendrobium, Oncidium) for Northern Vietnam” (PhD. Thesis: Hoang Xuan Lam)

Dong Nam Bo (DNB) (South-eastern Region) is considered as one of the most favorable areas in the country to promote desirable crops, which are intensively grown for export purpose. Rubber, coffee, black pepper, cashew nut, maize, groundnut, and vegetable have been developed successfully.

P deficiency is considered as an important limitation of crop productivity. The lowland rice areas of Southern Vietnam as Fluvisols, Acrisols have been emphasized to be investigated how to improve the problem.

Information on new findings of the doctoral thesis: ” Research and application of molecule markers in breeding salt-tolerant Bacthom 7 rice variety”. PhD. Thesis Dong Thi Kim Cuc

Information on new findings of the doctoral thesis: Title of the research “Study on biological characteristics and technology of spawn production, cultivation of the King oyster mushroom ((Pleurotus eryngii) and Yunzhi mushroom (Trametes versicolor) in Vietnam”. Nguyen Thi Bich Thuy

Information on new findings of the doctoral thesis:  Title of the thesis.” Studying on potassium balance for sugarcane in Lam Son sugarcane belt, Thanh Hoa province”. PhD. Thesis.  Pham Thi Thanh Huong

Information on new findings of the doctoral thesis: Title of the research :”Study on rice breeding for brown planthopper resistance using molecular markers”. PhD. Thesis. Phung Ton Quyen

Information on new findings of the doctoral thesis: Thesis’s title: “Study on breeding of medium maturity maize hybrids with high yield for the Southeast and the Central Highland of Vietnam”. PhD. Thesis. Vu Ngoc Quy