[生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants

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Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but 公仔箱論壇8 x/ e. ?- v& l: ~( V6 x

! B6 a: p+ u! e7 gcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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How to identify Early Blight# r+ {( J5 z! j& i: _

4 ~" J  s% z. E$ H+ c" etvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to   z2 p) _, U8 X

) J+ Z0 W+ F" f公仔箱論壇newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown www2.tvboxnow.com& ^8 o1 ~% E2 m: |$ K

: ^& _% n% b/ u  ~% j0 ~/ PTVBNOW 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。in color and form concentric rings, or a
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7 m, P3 b# x3 c! mtvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇$ m9 ~; Y- i$ b
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leaves may fall off. Extensive loss www2.tvboxnow.com$ o5 r1 P0 W* m$ ^
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.www2.tvboxnow.com8 V6 W2 ~5 c+ z' |  X, n" |3 A
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( i! O1 v( Y# G4 u1 |& h9 _0 F. ^公仔箱論壇How to identify Septoria Leaf Spot公仔箱論壇" Z! d0 I2 R% X1 a

  l/ K$ i" Y4 A* z$ E: TSymptoms of Septoria leaf spot also start
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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 www2.tvboxnow.com1 f: w# A9 p8 ?% E
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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. 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。; Y/ Q, o% v, z# s2 n( U
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Small dark spots, the fruiting bodies of the fungus
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
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and dead. Stems can also become infected but tvb now,tvbnow,bttvb# L$ O9 y0 z9 O, T

1 Z  C\" {+ X5 W  w2 ^6 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。infection of fruit is rare.
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& Z: N' D# W! i, [$ {& x公仔箱論壇How to Prevent and Control Early Blight and
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Septoria Leaf Spot
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1 p4 `& n0 G  ^' B% _4 Gtvb now,tvbnow,bttvbFollow the 12 easy steps below to enjoy a 9 `7 n, j$ H! T& o5 X
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.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 f' ^7 I  b! K" j
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Weed your garden. Some weeds, www2.tvboxnow.com% Z; C1 N; S/ o# |! N& R, I3 F

; |- N8 A- B7 {' {" n1 Q公仔箱論壇like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇" [$ V, j) I$ Z) u( Y4 n' z

3 M4 |( I. Y+ ^& R! i7 H公仔箱論壇Rotate crop locations. Don’t
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" r; g* V/ [8 Wwww2.tvboxnow.complant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas ) h* X4 }( e4 N9 x% ]3 M1 E- F
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where tomatoes were grown.6 K2 o  B, X8 g( X1 E) J5 ^

/ y' N8 |4 I2 `- I& \+ O% VGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb+ q  \" g7 ^/ }# [
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb% p0 N  P  {1 F1 M4 n3 r

, F% d  W8 m. e; v5 R( Gwww2.tvboxnow.comfungus from the soil to your tvb now,tvbnow,bttvb1 ]5 X* O, N& E# y: U2 P0 U0 u; s
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plants.
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Stake or cage plants to keep them , l# V7 L8 A: v* {' N

( S# n2 ]9 ?; L6 W8 ]. Ioff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and
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' |6 T+ D, B. U, L4 V7 t公仔箱論壇cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of
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9 V- r4 n% c& rwww2.tvboxnow.comspace above the soil without any leaves. Do not use ' a7 M/ ^* Y4 z- J
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overhead watering. + M. V5 n, ~% c$ A2 o
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
7 N4 @0 o3 x, V& B+ d* P* VConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow
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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
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wet. Keep your plants happy and healthy. Weak and stressed $ J* B8 R$ Z& K4 s1 [/ }

: L' d* ?3 n* \www2.tvboxnow.complants are more susceptible to disease.' B/ t5 \4 f8 o
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Remove and destroy or throw away diseased leaves, both off the
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early * n* u3 ?: l+ z0 E

9 x+ a; u, @* G" {. [3 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。enough. If a plant is heavily infected
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1 A  Y# X: z7 k# Wtvb now,tvbnow,bttvb, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 公仔箱論壇8 N( Z' W  q1 C! [0 e

0 J/ E9 K) D# Z. I5 `3 r! }to remove diseased leaves should be disinfected before being used on a different plant.7 R. h3 K0 i- h; E: q
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Spray plants to prevent and control the . S% u  m: z. y\" p9 U0 x$ y

# x  b8 T! P\" kspread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 公仔箱論壇$ @6 a% ?, Z: V

4 C5 @8 L. n7 U4 Z6 M; `) l公仔箱論壇GreenCure.公仔箱論壇0 l! Y3 C5 m5 F3 s
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Late Blight on Tomato PlantsTVBNOW 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。* C4 f# S. E0 c- Y& ^: q) w+ I
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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。; o3 `* [  T  B6 C# ?: u

! N2 }6 Y1 H- x5 T2 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。plants in a garden. Once a tomato plant
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb) \$ h$ N+ f! _& D' K; H# F

5 P  g( z% T. _5 ]% h5 R6 o公仔箱論壇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 blightwww2.tvboxnow.com; [1 L, _( B8 C8 b. [

6 ^. o; `2 s! B can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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$ j$ M  h7 l; K3 x4 wSeptoria leaf spot infections will also help prevent late blight infections.