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Rice virus disease identification and control


, The seedling plants, regardless of 3n tiller disease,[link widoczny dla zalogowanych], early dead,[link widoczny dla zalogowanych], reduced tillering tillering disease is not heading or semi-pumping do not spike, or panicle emergence package, seriously affecting the real knot stone roller, spread by the black-tailed leafhopper. (B) Anti-Verticillium wilt of rice: leaf deformation is small, soft leaves of tillers are more qualitative. Described the incidence of serious seedling re-dwarf plant, whole plant yellowing. Increased tillering, root development can not be heading difference; the late tillering stage disease, in the main stem is no early symptoms or Tillering mild symptoms: strong but appears to heading hair panicle, panicle small, strong bad, and most are yellow dwarf tillering shrinkage,[link widoczny dla zalogowanych], poor root development. Also spread by the black-tailed leafhopper. (C) Common Dwarf Rice: diseased dwarf, tillering increase. Dark green leaves. Short, stiff leaves, leaf or leaf sheath on the show yellow-white spots and veins parallel to the dotted line,[link widoczny dla zalogowanych], before the old leaves on diseased leaves following the general shape does not appear typical symptoms, booting the performance of the late onset of symptoms in the flag leaf poor root development. Roots many, are in black-tailed leafhopper transmission, (d) control methods: (1) will mature into the same chip with planting rice. To reduce the transmission of leafhopper rice fields in different growth stages of the disease migration. (2) Select disease-resistant varieties, rice with the cut with the pick, do not stack Tanabe into the night to prevent the toxic rice leafhopper, broadcast seeding may be appropriate to increase density,[link widoczny dla zalogowanych], reduce disease losses. (3) 20% of leafhoppers per acre available in 100 ml of bulk EC. Water spray can also be used on 25% WP Carbaryl 21) 0 - 250 grams, or splashed water spray. Effective is better. Guichi Juan Town City Village, the two groups before the flush of summer ice-Man Code: 247100 tree branch in the tree pruning class producer, believe that the apple tree pruning techniques is difficult. Classification tree branches will be ranked, make things easy, clever set of formulas. You can master the application. To achieve a multiplier effect. (1) the backbone branch: All trees in two-story arrangement of 5-6, too Thinning. (Small and sparse canopy shape.) (2) of the old branches: leaving a sparse one. (3), whorled branches: a reduction of a leave-one-sparse. (4) competition branch: Every two to one, every three to remain a cut of a sparse one, four-interception second thinning every one second left, and so on. Stub for a very heavy cut. (5) leggy branches: Thinning. (6) vertical branch: Thinning, change the angle or very severe stub. (7) drooping branches: mopping the floor after the lift cut. ( parallel branches: one to every one. (9) rabbit ear sticks: one to leave a length of one or leave one. (ZO) chicken sticks: breaking buds update. Leaving a full bud. (11) Light Fruit Taiwan: Taiwan breaking updates. (12) whip branches: the central branch Thinning, and promote the system after injury. (13) fishbone branch: Reserved. Results after the retraction of the weak branches. (14) Mean branch: broken terminal bud. (15) cross-sticks: Thinning or retraction. (16) had dense branches: Thinning, keep branches away. (17) the results of branch: retention, excessive stub update. (1 Perennial sticks: retract branch office. Henan Jiyuan City Bowl Fruit Technology Promotion Center Wang Xianlong Post entropy: 454,650.18.