標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁] 作者: 6t6t 時間: 2019-4-13 05:03 PM 標題: Early Blight and Septoria Leaf Spot on Tomato Plants
Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but % H" y$ {3 d/ K- [: \9 U% V8 A9 }5.39.217.77 4 o. b! g4 \( _3 N/ m2 K; r$ s8 Lcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.. D) P! B1 q# M- w/ P5 x$ L; k) y
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How to identify Early Blight ( X4 p4 T+ O; z" @5.39.217.773 \5 T2 M6 X2 G% i9 v+ t% R
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ' |! ]2 Q3 ], i5 H* u" X% @公仔箱論壇TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。0 [" f6 i1 H3 Y8 Z( p- b* m
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown tvb now,tvbnow,bttvb0 P4 b" M- l' x( j' H4 N3 `
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in color and form concentric rings, or a 5.39.217.77# z4 W& J2 n1 r f, X& ~/ l
6 u% i# p, c8 _2 htvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, . [7 E# Z& Z7 f; p5 P公仔箱論壇tvb now,tvbnow,bttvb) N, Y' P' c9 E2 _$ M5 p, W' N4 d leaves may fall off. Extensive loss TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。* N: t" B' S0 S3 @' R/ B7 l$ f
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。/ Q: X4 m0 H* Q- i
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. $ d% Y- r( W) T1 r5.39.217.77- _- f% G- c6 ~) r3 e0 b6 t& j
- o/ p) B+ S- v2 t0 V( u4 K$ s公仔箱論壇How to identify Septoria Leaf Spot $ t1 [" {: p' v3 g6 |1 J7 H# V3 _1 \$ \+ f/ `
Symptoms of Septoria leaf spot also start J) b. M2 E7 `3 g. }7 gtvb now,tvbnow,bttvb + ^4 F1 ^1 s8 U7 I& ytvb now,tvbnow,bttvbon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change tvb now,tvbnow,bttvb: Z/ ^; r; u. I0 |& G
$ e0 l- O$ i; U1 O% S5.39.217.77shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 5.39.217.77. f+ P* n; ^7 {: A/ ^/ J8 y9 o5 m
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Small dark spots, the fruiting bodies of the fungus * q/ J$ y6 w' i; {, l: t; dTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。7 G2 {2 V, k& G, ^8 { r6 U , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 公仔箱論壇# c N7 o" l* P4 Z8 l" Q$ j7 ?
" O' H! J2 z' Q' Xtvb now,tvbnow,bttvbWeed your garden. Some weeds, 5.39.217.77" t3 Y' d6 W, ]: p
# ?% [7 o' N& ?0 I$ B; jTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.5.39.217.778 T" r8 s. {& m" e9 ^
" s& R+ y5 {+ M% M公仔箱論壇Rotate crop locations. Don’t . q6 p, z/ [, ? , r1 o8 d0 D! @6 ~公仔箱論壇plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 5.39.217.77% R( h( l# \$ ]( M$ R
$ _6 N O q; ^ J* w) [' ~1 t2 Ztvb now,tvbnow,bttvbwhere tomatoes were grown. , F* C) R; S$ a公仔箱論壇% a6 n c ?* B! r2 R* Y
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. 2 \6 h) Z* i6 E9 q, Z' L5.39.217.77Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 9 G: M% `1 q' E+ V" S, @' w! Q# E- vTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。 6 O6 t3 i# M* c2 k1 A4 D; |TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。fungus from the soil to your TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。# Z2 a: s+ r9 e& Z4 S5 {
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plants. ! K, [/ \0 H; E8 z, nTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。 H) W( V; d. s. {) S! G+ x
Stake or cage plants to keep them 7 n, I$ I- [3 C9 \6 c7 c/ Z5 ` ) d( r& m; h# T* I1 cTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。3 q- w% e' `, L# X
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2 L4 X, u( e0 y' e6 r, m
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 7 z: Z7 R+ t; k% f c# d公仔箱論壇) W$ h( {0 ~+ G1 ~
space above the soil without any leaves. Do not use $ u/ C/ ]. W, ^\" V8 w; i
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overhead watering. # o) I* M& b8 S- _( ]. b6 h' w5.39.217.77Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. # i9 N3 I6 {4 P, g E% P' E
Consider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow , {; g/ N- ~7 _$ N4 P. c7 g# W/ a8 b* {! }( G
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 9 t% p5 g$ \. F+ _- F5 q1 m/ ^
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wet. Keep your plants happy and healthy. Weak and stressed TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。3 Y! |* x# c5 `8 f& q( o
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。0 v; k# p5 M( N2 q
plants are more susceptible to disease. & Q5 {9 }+ z- `5 i4 C- L- o" ~1 Gtvb now,tvbnow,bttvb# _4 V* H4 J- k. N0 U3 X7 C
Remove and destroy or throw away diseased leaves, both off the . m$ E* e8 S$ f. F& ? E3 C' u; F: T$ P- D' _
plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb8 Z4 B" P& I. F4 g# F
1 c2 l, `' w/ O% g/ t8 otvb now,tvbnow,bttvbLate Blight on Tomato Plants . X* j5 X) u- }) H# t9 l3 N7 Y8 b公仔箱論壇4 S! J5 {% v; b$ `; r( e, O
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2 ^8 O/ I, x+ N5 v* X: C& @
* T, e" _# y& H/ q1 s9 t5.39.217.77plants in a garden. Once a tomato plant 5.39.217.77. _8 G* [" P/ \, t3 L: E
% ?1 f o4 w1 j3 iTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 8 I4 i6 o! Y' C2 `% S- E0 ~ # I: z1 p' T+ C5 b1 E: gwater-soaked spots on leaves and stems that grow and turn dark brown or gray. A white downy growth may develop on the underside of infected leaves. Late blight/ D( f3 `& g6 o! |: I+ H
4 v% B, N+ Q& U c+ Q; h; ^1 u2 ~ can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 5 b4 n" |5 p& a5 O2 V( f; Vtvb now,tvbnow,bttvb / u! t! \7 E7 h6 |Septoria leaf spot infections will also help prevent late blight infections.
