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 2 C" K4 ?3 N8 k. {公仔箱論壇, s- X0 i* F3 g4 ]/ e9 v) o& I
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb" ]' H& @* U$ s! ~
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How to identify Early Blight * Q6 [* L2 O; @4 ~0 b公仔箱論壇; k# F8 {' Q* N7 _) |
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to , q. @) _5 w7 K& W) F; o公仔箱論壇 + \ |, @$ @& Vnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 公仔箱論壇$ v. [/ n2 f7 B: N
0 M" n0 I. y( q, h- W8 X- k, w9 r9 fin color and form concentric rings, or a 2 ~5 U\" F! u4 k9 B; ?- X5.39.217.77:8898$ v( v7 |6 n8 s2 c
bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, " }: E- z' |; H4 a: |3 x公仔箱論壇 , i }3 `0 V* f e9 H9 a* q& ^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。leaves may fall off. Extensive loss + A+ A3 b4 b& M8 W Utvb now,tvbnow,bttvb0 Y( [8 t+ m r3 H
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.9 u! O; C5 r0 D, O& `/ N5 B
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# ?, C* e8 ], s$ q) S' v" E$ q9 D: NHow to identify Septoria Leaf Spot $ Y6 _ h2 K1 i0 ~5.39.217.77:8898tvb now,tvbnow,bttvb8 w# f0 z2 S- c, ]' U2 u! N
Symptoms of Septoria leaf spot also start 9 ~2 H( w3 h3 ^/ U! J5.39.217.77:8898 : C) o5 Z4 B0 ]- `/ J$ J: s5.39.217.77:8898on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change $ ` l- D; {+ D! d; S: i
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shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 公仔箱論壇7 Q6 l& v% N- [1 ~1 G- P
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。9 Z% t; E/ ^7 Y& n- ? Y: G
Small dark spots, the fruiting bodies of the fungustvb now,tvbnow,bttvb! P: G2 H& F& Z4 e4 Z$ l9 p
8 r8 X$ o. x' Xtvb now,tvbnow,bttvblike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 2 E7 R# {9 t5 a& S2 G% c k1 L5.39.217.77:8898 . R( P' O+ X( ^9 M7 m: g$ bTVBNOW 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。Rotate crop locations. Don’t G( D. o7 g9 Y7 i* X. n$ Ktvb now,tvbnow,bttvb公仔箱論壇$ y9 I+ o' [/ _4 O
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 5.39.217.77:8898. l# w1 ~4 [) g6 d1 z$ e
9 V y1 a. B! Y5 L4 pwhere tomatoes were grown. 7 T( m9 _$ [+ z. {8 P8 T+ Htvb now,tvbnow,bttvb8 l4 v4 u, G' S( t
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. 7 A1 M: {% @: T9 y* o4 a 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。Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of . ]: ~3 r" F4 }1 p2 t8 B8 |
4 ^% i. G1 Z4 {, _公仔箱論壇fungus from the soil to your + E6 m; {) y% |& u& d, _. S- r+ x5 g1 a- c% \7 k& r
plants.公仔箱論壇* A1 y$ @- s; ~6 B' E
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Stake or cage plants to keep them 6 u) G/ I+ m7 T& 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。 8 T' i0 b/ K3 d$ _/ _- c, w; F3 q公仔箱論壇off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and / L$ j1 ?4 g1 J. a
/ V$ `: ?/ A s% v' G- Y% u! Qcages. 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。$ x- ~& E# z* l" b" g& w
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。( B7 Q+ R( c9 z( h l- \
space above the soil without any leaves. Do not use & Q B0 u& U2 ` 5 N4 ~3 `0 h! h7 mTVBNOW 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。overhead watering. 2 C+ x5 ~, c0 N* a! E) UTVBNOW 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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 5.39.217.77:88984 C7 `4 z* @ ]9 s. ]! c1 ^8 ~
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 0 u, h0 X. }8 _7 [
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fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 4 p/ k. J. |: l) A( _4 y0 }, g3 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。3 G9 ?/ G4 a2 C6 `* i" L
wet. Keep your plants happy and healthy. Weak and stressed 4 M9 P( |1 X' e8 r公仔箱論壇 ! F$ }$ T, x: {; Tplants are more susceptible to disease.5.39.217.77:8898- |. w. V, k5 I3 @6 Q5 }, n
. F\" P\" g4 a, ~2 ctvb now,tvbnow,bttvb, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used * g7 c) c- d* j [公仔箱論壇/ a8 y/ G; h8 G5 K, L. L7 K
to remove diseased leaves should be disinfected before being used on a different plant.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。- e/ k/ z. O, |, R+ m; C
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。' G- m7 h( O/ d: F& z
Spray plants to prevent and control the + S( K5 E3 K9 K- A. Z/ E. K* b/ 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。 5 w4 c5 k5 B! P+ U' R! Z# ospread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 3 i. n( l7 S$ Y7 o8 Stvb now,tvbnow,bttvb7 P' ]: Z+ E/ b' o! W' P6 V9 p
GreenCure.公仔箱論壇( v3 c) c8 g7 h) ], j! Q4 u8 G7 q
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[/ n, o% `; K5 o) h公仔箱論壇Late Blight on Tomato Plants # V: w. y* ]( c' z5.39.217.77:8898公仔箱論壇- S( V7 c& Z7 v/ p/ i
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato # q8 O- f, I' u& w公仔箱論壇公仔箱論壇& ?* p) S! l# k+ L+ l) t5 @ plants in a garden. Once a tomato plant & |5 N/ F6 T; X: F: y+ gtvb now,tvbnow,bttvb 3 ?% B: P; h7 T' C C! e, xtvb now,tvbnow,bttvbis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 3 O# g5 i; p$ a, ~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。5.39.217.77:88989 }* `/ F& E8 z' U( `; D
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 blight5.39.217.77:8898\" j\" B# c/ W' |3 i. Q1 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。- [ {/ X' t. L2 v9 v! s' T( D* |4 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 O3 |/ q8 _6 b1 Z
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Septoria leaf spot infections will also help prevent late blight infections.
