Tài liệu Bảo Vệ Thực Vật miễn phí Trang 7

* Tập quán sinh sống và cách gây hại: Ngài vũ hóa, bắt cặp và đẻ trứng vào ban đêm, ban ngày ẩn nấp. Ngài bị thu hút mạnh bởi ánh sáng đèn, nhất là ngài cái. Ngài cái thường đẻ trứng ở các ruộng lúa hoặc mạ có màu xanh đậm, ...

3 2. Biện pháp quản lý hại côn trùng hại trên cây hoa kiểng 3.Thực hành 6 Chương 6: Phương pháp đánh giá côn trùng hại ngoài đồng 1. Phương pháp điều tra 2. Các chỉ tiêu theo dõi và công thức tính 3.Thực hành 5 1 4 Ôn thi 1 1 Thi kết thúc ...

Uỷ Ban Nhân Dân Tỉnh Đồng Tháp‌‌ Trường Cao Đẳng Cộng Đồng Đồng Tháp‌ Giáo Trình‌‌‌‌‌‌‌‌‌‌‌ Mô Đun: Côn Trùng Chuyên Khoa Nghề: Bảo Vệ Thực Vật‌‌ Trình Độ: Cao Đẳng (Ban ...

Many people confuse plant nutrition with plant fertilization. Plant nutrition refers to the needs and uses of the basic chemical elements in the plant. Fertilization is the term used when these materials are supplied to the environment around the plant. A lot must happen before a chemical element ...

Be inverted and swished in a bucket of tepid (lukewarm) water. To prevent loss of soil, cover it with aluminum foil or plastic wrap. Large plants can be hosed down gently, or upper and lower surfaces of leaves can be wiped with a soft, wet cloth. Large plants can also be rinsed in a tepid shower. ...

- But don’t leave them for more than a day or two, or you’ll have purple, moldy peaches. C. Jar method - For a few tomatoes - Assemble the jars and remove the lids. - Put in one ripening banana per jar. - Put in two to four medium-sized green tomatoes per jar. Do not overfill the jar, or the ...

II. Transplanting method using machine Figure 2. Paddy plants transplanted by transplanting machine (Photo: http://www.hamco.vn/ban-tin-hamco) The use of machine for transplanting brings control to the space between the plants and the number of seedlings in the processes. The usual cultivation ...

4. Symptoms such as leaf yellowing or browning are also nutrient deficiencies. 5. Nutrient deficiencies affects fruits, leaves and flowers. 6. Nutrient deficiencies may be accompanied by stunted growth and poor flowering or fruiting. Task 2: Read part 5.1 and answer the following questions. 1/ Why ...

(Photo: urbanext.illinois.edu/roses/disease.cfm) It is unusual to see the insects at work, but they make their presence known by the perfectly round holes cut near the edges of the leaves. These leaf pieces are used to make egg partitions inside their burrows. The damage they cause is strictly ...

Attracted to fruit trees. They are treated with chemical formulations sprayed onto the tree during a fixed period from anticipated harvest time, which varies widely by product. Common insecticides use on fruit trees include: Carbaryl, Malathion, Metaldehyde, Azadirachtin, Permethrin and Pyrethrins. ...