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 7 k# h5 H2 o- k+ m " D4 h4 F5 B6 {$ u: S+ {! ? Mtvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. 5 d/ t1 K* p$ p8 k0 u公仔箱論壇tvb now,tvbnow,bttvb6 d4 i* O x. E6 q. J7 Y4 e
$ B0 c G5 y4 lHow to identify Early Blight K1 Q: G' O4 W# _ L; k7 ^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。 8 W0 T: B5 P1 p- z; f3 ?+ E5.39.217.77:8898Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to , z+ O4 a3 [) C" F ; j% J% F8 n- J' {1 n2 Btvb now,tvbnow,bttvbnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown + U6 d% B+ [4 I! h4 q: ~! K W公仔箱論壇 9 t$ r7 K, \/ T' g0 g4 @) Ztvb now,tvbnow,bttvbin color and form concentric rings, or a - i h6 h/ k7 @* G0 d5 W
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, , S% X( i8 f" h1 r6 q% ftvb now,tvbnow,bttvb2 z" M/ n) O5 X. 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。- `0 ?6 @+ i6 X4 N
* m* K9 }% E( z! G5.39.217.77:8898of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇' v) }, w: s S- N
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How to identify Septoria Leaf Spot - k- I1 P' b. ]+ j+ ?7 L4 j0 w3 utvb now,tvbnow,bttvb- ]0 O" T0 k8 M( W1 z) l |
Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb M- h$ c$ e! g6 i2 X$ }2 X7 ~
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on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5.39.217.77:8898/ C) {& M+ S' \3 q- j, e6 M6 w
" r5 P& I# [0 u( \) ptvb now,tvbnow,bttvbshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. # `2 D; @+ U b: D/ n公仔箱論壇8 {, D5 d9 g3 d" ^
Small dark spots, the fruiting bodies of the fungusTVBNOW 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 g7 j1 W2 H6 P
tvb now,tvbnow,bttvb8 V' I- E& D; ? U5 a , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry ) p" U$ v. D7 v9 w" \4 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。 u0 o: @; M& P7 z" O
and dead. Stems can also become infected but \" J, p5 Z' @& d7 f5 l6 m$ V
6 \) ?& }6 o" e! _5 q. \3 @Weed your garden. Some weeds, @. Z# N+ w4 S, @6 b8 G0 B7 U! B7 d5.39.217.77:8898tvb now,tvbnow,bttvb: U1 i. R6 T+ D, h, u& R
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. / u! s% d, W! b7 @, O' w4 zTVBNOW 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。tvb now,tvbnow,bttvb6 i/ U7 J X# X. P% E Rotate crop locations. Don’t / ~% H; d$ C2 `+ h x/ Z : ~+ Q2 l1 ]8 s8 U# H/ g; t5.39.217.77:8898plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas $ Z9 K: O& M# y& k公仔箱論壇 5 I) ~: Z' g0 J9 ?, ^, Ztvb now,tvbnow,bttvbwhere tomatoes were grown.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。$ s0 y8 j9 X8 y4 o0 q5 F; L( R
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。6 H- v$ i5 N) s/ U% X. M% q% L; o9 I
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. ' _ Q$ q' [# g7 D: H oCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of ' m9 K6 E/ F3 `
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fungus from the soil to your ) q/ ~% d9 v- I# |- H6 j" v 4 e) \5 q" _- M* K5.39.217.77:8898plants. - _1 ?9 x& B8 g, q6 H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。+ z, D" s7 m' N8 B! T( N% k0 r4 ^- p
Stake or cage plants to keep them - \# S0 m# D/ K7 K8 hTVBNOW 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。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。6 ?6 J6 D5 v, y
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 5.39.217.77:8898$ }5 P" R" q3 _( J2 [& h
$ r& Q8 y2 m ]0 ~# T# g0 }cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 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。* M3 u! }2 u& s- [9 M
+ T% S, W8 L" E! F* C" G7 Ktvb now,tvbnow,bttvbspace above the soil without any leaves. Do not use ( Q1 a+ b0 x# X6 i0 E' r
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overhead watering. 5.39.217.77:8898; U' Y+ ~5 W# S# A; e
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. $ o* Z& K" W% f; U: q+ _4 N- N3 Wtvb now,tvbnow,bttvbConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow 6 [. i+ S; v0 t' I+ _4 l1 G4 | : o0 D4 i' E5 ~+ t- Z6 e5.39.217.77:8898fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are ! [) V2 ]+ O2 n' w: ^9 u, M" j2 C$ M) m! Y! M2 |
wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb# O' i6 v. {2 M: P, o7 n# w
3 o% h# G- N J( g) v7 ?tvb now,tvbnow,bttvb + m7 j& \! S# _$ Y! d: S" Z3 t% Y5.39.217.77:8898Late Blight on Tomato Plants # q1 N Z9 M; O, X! k7 i5 ~, N公仔箱論壇 9 D- S- W% w3 }( b" y2 ]tvb now,tvbnow,bttvbLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 5.39.217.77:8898( R% t$ F5 ? a% ?4 t& T/ y
tvb now,tvbnow,bttvb- ^! ^2 x6 {$ S$ l plants in a garden. Once a tomato plant ; T6 w- R: w$ G4 Q2 f - e& L5 C% {% p2 his infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, - Y1 A9 q0 w5 i& {, Y; j
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water-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/ q$ _, f; ]5 V2 s0 [* M8 y& Q0 W: A
, f( n: @* f/ `: | can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and tvb now,tvbnow,bttvb: m+ ^1 d& q5 e" t; o2 t* u
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Septoria leaf spot infections will also help prevent late blight infections.
