Đề tài thu thập được đầy đủ các thông tin về thực trạng sản xuất, tiêu thụ cây mạch môn từ các hộ gia đình và các cơ quan chuyên ngành nông nghiệp tại hai tỉnh Phú Thọ và Yên Bái. Đồng thời, thu thập, trồng bảo quản và theo dõi 10 mẫu giống cây mạch môn. Đánh giá một số chỉ tiêu hình thái, sinh trưở...
|
The root-knot nematode Meloidogyne incognita is a widely distributed disease of the tomatoes around Hanoi. The effect of bio-fertilizer (HC5.3) and bio-agents (WEHG, BAEM, Agrispon and Sincosin) on nematode population changes in different tomato varieties was studied. When compared with non-organic ...
|
Artifical innoculation of the seven bacterial leaf blight (BLB) isolates from Northern Vietnam onto the...
|
A study on effect of combined NPK application on Arabica coffee in Huong Hoa, Quang Tri was carried out in 2000 – 2001. Different combinations of NPK mineral fertilizers significally influenced the growth and development characters and bean yield of...
|
Groundnut leafroller Archips asiaticus (Walsingham) is a lepidopteran (Tortricidae family) and has a medium size. Eggs are laid in clusters about 23-101 eggs each. Eggs are spherical with pale yellow color at first, then become dark yellow....
|
Agronomic scientists accept standard error for almost characters at 1 percent, 5 percent or 10 percent. In the present experiment with soybean it was found that the standard error depended on stability of the characters and sample size....
|
A diallel experiment involving nine inbred lines: T13, T14, T15, T16, T17, T18, T19, T20 and
T21 selected by the National Maize Research Institute in autumn - winter crop season 2002 and in
spring season 2003. The software Diallel was employed to evaluate the combining ability (CA) of
the yield trai...
|
Over 20 species of natunally occurring insect - specific bacteria have been isolated from the
soil, insects and plants, but only a few have been studied intensively. Much attention has been
given to Bacillus thuringiensis,...
|
Cayenne pineple is characterized by high yield potential and therefore, it is now promoted to
develop in Vietnam. To meet the requirements of vegetatively propagated materials for...
|
Seven inbred lines. viz. VN1, VN2, VN3, VN4, VN5, VN6, VN7 selected by the National
Maize Research Institute were topcrossed to two lines, A10 and A20 introduced from India as
testers in 2002 spring cropping season. Topcross perogeny was evaluated in autumn-winter
season in the same year....
|
The paper briefly presents the results in 2000-2001 on fruit formation and development of Robusta coffee investigated on three ripening groups: early, medium and late. Fruit dropping of Robusta coffee depended on the variety groups and highest rate of fruit drop was observed for the early ripening g...
|
Thrips palmi Karny are the most important pests on vegetable crops, it is a serious pests during hot season low rainfall. However, research about this insect pest was scarce. To solve control pest problem and reconize the indigenuos natural enemies of this pest, this research was carried out to surv...
|
Effects of culture media and Metalaxyl chemical treatment on growth and
development of Phytophthora infestans (Mont.) de Bary on tomato and potato
Ngô Hải Xuyên, Hoàng Văn...
|
Postharvest losses of mangoes Namdokmai were assessed in Bangkok, Thailand. Fungi causing mango postharvest diseases were isolated as Colletotrichum gloeosporioides, Lasiodiplodia theobromae, Dothiorella sp., D. dominicana, D. mangiferae and Phomopsis mangiferae, Aspergillus sp., A. niger and Penici...
|
A series of tomato hybrids (F1 ) was tested to identify hybrid combination with enhanced quality of products and fruit setting ability at high temperature. Evaluation results showed that most of hybrids were heat tolerant under hot and humid conditions in spring - summer season. Most of the hybrids ...
|
Treatment with three levels of Ethrel (0.1%, 0.3% and 0.6%) was conducted to determine its effect on defoliation and flushing of persimmon cv. Thach That. Ethrel induced abscission of leaves and stimulated flushing of Thach That persimmon earlier and more uniform than the control (water). Treatment ...
|
Determination of optimal planting density for soybean cultivar D140
grown in the Red River Delta...
|
Cóc Thái Lan (Spondias cytherea Sonn.) thuộc họ Anacardiacae là loại cây ăn quả có đặc điểm rất dễ trồng, ít sâu bệnh, cho nhiều trái, trồng khoảng 18-20 tháng là thu hoạch và đầu ra luôn thuận lợi. Cây thấp (khoảng 1,5m- 2m) nhưng tán rộng, thích nghi tốt với các loại đất. Ưu điểm nữa của cóc Thái ...
|
Hầu hết nông dân trồng cây có múi đều biết bệnh vàng lá gân xanh (VLGX), vì bệnh nầy đã tàn phá gây thất thu nghiệm trọng nhiều vườn cây có múi (CCM) trong những năm qua. Bệnh do vi khuẩn (Liberobacter asiaticum) gây ra, nhưng cho đến nay chưa có giống kháng và cũng chưa có thuốc trị hữu hiệu bệnh n...
|
Nông dân Đồng Bằng Sông Cửu Long thường xuyên phải đối mặt với sự đổ ngã của lúa nhất là trong mùa mưa. Đổ ngã làm giảm năng suất lúa (trên 10%), ảnh hưởng đến chất lượng gạo và gây khó khăn trong thu hoạch nhất là thu hoạch bằng máy. Lúa ngã ảnh hưởng đến quang hợp, quá trình tạo hột bị đình trệ do...
|
|