{"id":952,"date":"2024-07-26T15:32:37","date_gmt":"2024-07-26T08:32:37","guid":{"rendered":"https:\/\/bacte.vn\/benh-tuyen-trung-hai-re-cam-chanh\/"},"modified":"2025-09-22T15:55:46","modified_gmt":"2025-09-22T08:55:46","slug":"benh-tuyen-trung-hai-re-cam-chanh","status":"publish","type":"post","link":"https:\/\/bacte.vn\/en\/benh-tuyen-trung-hai-re-cam-chanh\/","title":{"rendered":"B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam chanh"},"content":{"rendered":"

B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam chanh<\/b><\/strong><\/h1>\n
\"tuy\u1ebfn
Tuy\u1ebfn tr\u00f9ng h\u1ea1i c\u00e2y cam chanh<\/figcaption><\/figure>\n

T\u00ean khoa h\u1ecdc:\u00a0<\/b><\/strong>Tylenchulus semipenetrans<\/p>\n

B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5<\/strong> cam chanh Tylenchus semipenetrans s\u1ed1ng \u1edf trong \u0111\u1ea5t v\u00e0 t\u1ea5n c\u00f4ng r\u1ec5 c\u00e2y, khi\u1ebfn cho r\u1ec5 c\u00e2y b\u1ecb c\u1ee9ng, nhanh ch\u00f3ng th\u1ed1i \u0111en v\u00e0 ch\u1ebft. Do b\u1ed9 r\u1ec5 \u0111\u00e3 b\u1ecb ph\u00e1 hu\u1ef7 n\u00ean c\u00e2y kh\u00f4ng h\u1ea5p thu \u0111\u01b0\u1ee3c n\u01b0\u1edbc v\u00e0 ch\u1ea5t dinh d\u01b0\u1ee1ng.<\/p>\n

L\u00e1 c\u00e2y s\u1ebd chuy\u1ec3n v\u00e0ng, l\u00e1 nh\u1ecf xo\u1eafn l\u1ea1i v\u00e0 b\u1eaft \u0111\u1ea7u r\u1ee5ng h\u00e0ng lo\u1ea1t.<\/p>\n

Tuy\u1ebfn tr\u00f9ng g\u00e2y h\u1ea1i m\u1ea1nh nh\u1ea5t v\u00e0o m\u00f9a m\u01b0a, khi m\u00e0 \u0111\u1ed9 \u1ea9m trong \u0111\u1ea5t cao khi\u1ebfn tuy\u1ebfn tr\u00f9ng d\u1ec5 d\u00e0ng sinh s\u00f4i v\u00e0 c\u00e1c d\u00f2ng n\u01b0\u1edbc mang tuy\u1ebfn tr\u00f9ng di chuy\u1ec3n kh\u1eafp v\u01b0\u1eddn c\u00e2y.<\/p>\n

1. Tri\u1ec7u ch\u1ee9ng<\/b><\/strong><\/h2>\n

B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam chanh ch\u00fang x\u00e2m nh\u1eadp m\u1ed9t n\u1eeda ph\u00eda tr\u01b0\u1edbc c\u01a1 th\u1ec3 v\u00e0o r\u1ec5, ph\u1ea7n sau th\u00e2n tuy\u1ebfn tr\u00f9ng v\u1eabn n\u1eb1m b\u00ean ngo\u00e0i m\u00f4 r\u1ec5.<\/p>\n

V\u00e0 ph\u00e1t tri\u1ec3n ph\u00ecnh to h\u01a1n so v\u1edbi ph\u1ea7n \u0111\u1ea7u.<\/p>\n

Ch\u00fang th\u1ef1c hi\u1ec7n ki\u1ec3u b\u00e1n n\u1ed9i k\u00fd sinh t\u1ea1i ch\u1ed7 t\u1ea1o ra c\u00e1c t\u1ebf b\u00e0o sung ph\u1ed3ng xung quanh v\u00f9ng ch\u00fang k\u00fd sinh, l\u00e0m r\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng.<\/p>\n

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2. Nguy\u00ean nh\u00e2n g\u00e2y b\u1ec7nh<\/b><\/strong><\/h2>\n

B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam<\/strong> chanh do tuy\u1ebfn tr\u00f9ng Tylenchulus semipenetrans Cobb, 1913.<\/p>\n

Con c\u00e1i d\u00e0i 0,5 mm, kho\u1ea3ng c\u00e1ch l\u1ed7 giao ph\u1ed1i n\u1eb1m g\u1ea7n l\u1ed7 b\u00e0i ti\u1ebft (V = 90%).<\/p>\n

Tuy\u1ebfn tr\u00f9ng con tu\u1ed5i 2 d\u00e0i 0,28 – 0,34 mm. Con \u0111\u1ef1c d\u00e0i 0,30 – 0,41 mm, kim ch\u00edch h\u00fat d\u00e0i 11 \u00b5m.<\/p>\n

Theo Eroshenko et al. (1985), tr\u00ean m\u1eabu c\u1ee7a Vi\u1ec7t Nam, con c\u00e1i c\u00f3 chi\u1ec1u d\u00e0i t\u1eeb 0,4 – 0,5 mm, chi\u1ec1u d\u00e0i kim ch\u00edch h\u00fat l\u00e0 11,5 – 13\u00a0\u00b5m.<\/p>\n

3. \u0110\u1eb7c \u0111i\u1ec3m ph\u00e1t sinh ph\u00e1t tri\u1ec3n<\/b><\/strong><\/h2>\n

B\u1ec7nh Tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam ,…con c\u00e1i k\u00fd sinh tr\u00ean r\u1ec5 v\u00e0 h\u00ecnh th\u00e0nh c\u00e1 th\u1ec3 c\u00e1i, \u1edf nhi\u1ec7t \u0111\u1ed9 24\u00b0C ch\u00fang ho\u00e0n th\u00e0nh m\u1ed9t chu k\u1ef3 s\u1ed1ng v\u1edbi 6 – 8 l\u1ea7n ph\u00e2n chia.<\/p>\n

Nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a tuy\u1ebfn tr\u00f9ng 17,6 – 26\u00b0C.<\/p>\n

S\u1ed1 l\u01b0\u1ee3ng tuy\u1ebfn tr\u00f9ng t\u0103ng trong kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 t\u1eeb 20 – 31\u00b0C v\u00e0 cao nh\u1ea5t l\u00e0 \u1edf 25\u00b0C.<\/p>\n

\u0110i\u1ec1u ki\u1ec7n pH th\u00edch h\u1ee3p cho tuy\u1ebfn tr\u00f9ng t\u1eeb 6,0 – 8,0.<\/p>\n

V\u00f2ng \u0111\u1eddi c\u1ee7a tuy\u1ebfn tr\u00f9ng c\u00f2n ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o m\u00f9a v\u1ee5 trong n\u0103m v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t b\u1ecb thay \u0111\u1ed5i<\/p>\n

Ch\u00fang c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh 1, 2 chu k\u00ec ph\u00e1t tri\u1ec3n trong th\u1eddi gian sinh tr\u01b0\u1edfng trong n\u0103m c\u1ee7a c\u00e2y cam v\u00e0o c\u00e1c l\u1ee9a ra l\u1ed9c<\/p>\n

\u0110\u1eb7c bi\u1ec7t giai \u0111o\u1ea1n ra l\u1ed9c xu\u00e2n th\u00ec m\u1eadt \u0111\u1ed9 tuy\u1ebfn tr\u00f9ng t\u0103ng cao khi chuy\u1ec3n m\u00f9a.<\/p>\n

Khi tuy\u1ebfn tr\u00f9ng x\u00e2m nh\u1eadp v\u00e0o r\u1ec5 l\u00e0m cho r\u1ec5 b\u1ecb th\u00e2m \u0111en b\u00e1m \u0111\u1ea7y \u0111\u1ea5t, l\u00e0m gi\u1ea3m s\u1ee9c ch\u1ecbu r\u00e9t c\u1ee7a c\u00e2y v\u00e0 ph\u1ea9m ch\u1ea5t k\u00e9m. B\u1ec7nh tuy\u1ebfn tr\u00f9ng h\u1ea1i r\u1ec5 cam<\/strong> chanh c\u00f3 nhi\u1ec1u ch\u1ee7ng kh\u00e1c nhau.<\/p>\n

\u0110i\u1ec1u ki\u1ec7n ngo\u1ea1i c\u1ea3nh \u1ea3nh h\u01b0\u1edfng t\u1edbi m\u1eadt \u0111\u1ed9 tuy\u1ebfn tr\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng g\u00e2y h\u1ea1i r\u1ea5t r\u00f5 r\u1ec7t:<\/h3>\n

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