{"id":3233,"date":"2024-10-04T08:40:42","date_gmt":"2024-10-04T01:40:42","guid":{"rendered":"https:\/\/vietgiaminh.com.vn\/?p=3233"},"modified":"2025-03-20T14:21:49","modified_gmt":"2025-03-20T07:21:49","slug":"phong-tru-benh-vang-la-thoi-re-o-sau-rieng","status":"publish","type":"post","link":"https:\/\/vietgiaminh.com.vn\/en\/phong-tru-benh-vang-la-thoi-re-o-sau-rieng\/","title":{"rendered":"PH\u00d2NG TR\u1eea B\u1ec6NH V\u00c0NG L\u00c1 TH\u1ed0I R\u1ec4 \u1ede S\u1ea6U RI\u00caNG"},"content":{"rendered":"

B\u1ec7nh v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 \u1edf c\u00e2y s\u1ea7u ri\u00eang l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o \u0111\u00e1ng c\u1ea7n l\u01b0u \u00fd trong qu\u00e1 tr\u00ecnh ch\u0103m s\u00f3c c\u00e2y. C\u00e2y s\u1ea7u ri\u00eang l\u00e0 lo\u1ea1i c\u00e2y \u0103n tr\u00e1i c\u00f3 nguy c\u01a1 b\u1ecb nhi\u1ec1u lo\u1ea1i b\u1ec7nh h\u1ea1i t\u1ea5n c\u00f4ng do nh\u1ea1y c\u1ea3m v\u1edbi m\u00f4i tr\u01b0\u1eddng. Ch\u00ednh v\u00ec v\u1eady trong qu\u00e1 tr\u00ecnh tr\u1ed3ng v\u00e0 ch\u0103m s\u00f3c c\u00e2y s\u1ea7u ri\u00eang, b\u00e0 con c\u1ea7n th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra v\u00e0 quan s\u00e1t c\u00e1c bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e2y \u0111\u1ec3 ph\u00e1t hi\u1ec7n b\u1ec7nh v\u00e0 ph\u00f2ng tr\u1eeb k\u1ecbp th\u1eddi. Hi\u1ec7n t\u01b0\u1ee3ng v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 tr\u00ean c\u00e2y s\u1ea7u ri\u00eang c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o c\u00e2y b\u1ecb thi\u1ebfu dinh d\u01b0\u1ee1ng ho\u1eb7c \u0111ang m\u1eafc b\u1ec7nh.<\/span><\/p>\n

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Ph\u00f2ng tr\u1eeb b\u1ec7nh v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 \u1edf S\u1ea7u ri\u00eang<\/em><\/span><\/figcaption><\/figure>\n

Nguy\u00ean nh\u00e2n g\u00e2y b\u1ec7nh v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 \u1edf c\u00e2y s\u1ea7u ri\u00eang<\/b><\/h2>\n

Hi\u1ec7n t\u01b0\u1ee3ng v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 s\u1ea7u ri\u00eang x\u1ea3y ra do s\u1ef1 x\u00e2m nhi\u1ec5m c\u1ee7a nhi\u1ec1u lo\u1ea1i n\u1ea5m b\u1ec7nh nh\u01b0 Pythium<\/a>; Fusarium<\/a>; Phytophthora<\/a> g\u00e2y ra l\u00e0 ch\u1ee7 y\u1ebfu. C\u00e1c b\u00e0o t\u1eed b\u1ec7nh t\u1ed3n t\u1ea1i trong \u0111\u1ea5t, x\u00e2m nh\u1eadp v\u00e0 t\u1ea5n c\u00f4ng v\u00e0o b\u1ed9 r\u1ec5 c\u00e2y tr\u1ed3ng khi\u1ebfn c\u00e2y nhi\u1ec5m b\u1ec7nh.\u00a0\u00a0<\/span><\/p>\n

Tuy\u1ebfn tr\u00f9ng ho\u1eb7c n\u1ea5m Phytophthora spp x\u00e2m nh\u1eadp t\u1ea1o ra c\u00e1c v\u1ebft th\u01b0\u01a1ng ho\u1eb7c l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng mi\u1ec5n d\u1ecbch c\u1ee7a b\u1ed9 r\u1ec5, t\u1eeb \u0111\u00f3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho n\u1ea5m Fusarium solani x\u00e2m nh\u1eadp g\u00e2y h\u1ea1i.<\/span><\/p>\n

L\u00e1 v\u00e0ng do thi\u1ebfu nhi\u1ec1u nguy\u00ean t\u1ed1 nh\u01b0 Nit\u01a1, S\u1eaft (Fe), Magie (Mg) c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 th\u1ecbt l\u00e1 m\u00e0u v\u00e0ng, g\u00e2n l\u00e1 m\u00e0u xanh, l\u00e1 kh\u00f4ng b\u1ecb r\u1ee7, c\u00e2y kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng, kh\u00f4ng b\u1ecb th\u1ed1i r\u1ec5, th\u1ed1i g\u1ed1c<\/span><\/p>\n

B\u1ec7nh h\u1ea1i n\u00e0y xu\u1ea5t hi\u1ec7n nhi\u1ec1u v\u00e0o m\u00f9a m\u01b0a, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf c\u00e1c khu v\u1ef1c \u0111\u1ea5t tr\u0169ng, \u1ee9 \u0111\u1ecdng n\u01b0\u1edbc. B\u1ec7nh s\u1ebd tr\u1edf n\u1eb7ng v\u00e0o \u0111\u1ea7u m\u00f9a n\u1eafng.\u00a0<\/span><\/p>\n

Nguy\u00ean nh\u00e2n gi\u00e1n ti\u1ebfp g\u00e2y ra b\u1ec7nh v\u00e0ng l\u00e1 th\u1ed1i r\u1ec5 l\u00e0 do:\u00a0\u00a0<\/span><\/p>\n