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[生活小百科] 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
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! ]/ k. }. Y1 Wtvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.3 I7 ]1 E( |6 x$ H

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1 o+ v% Q2 v' M  ^www3.tvboxnow.comHow to identify Early Blighttvb now,tvbnow,bttvb$ l9 H5 A, \% g! I8 ~! I
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to : g$ k) `1 {6 u: ?$ g

# @; a" o- B) ]0 pnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown ( H0 q5 O8 l9 ?9 Q
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in color and form concentric rings, or a tvb now,tvbnow,bttvb6 f' G' E6 M& I, l+ B2 u. L\" x+ p

3 I# W0 s3 T8 w( T; c公仔箱論壇bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow,
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3 [( c/ v$ n) h0 l5 j1 LTVBNOW 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
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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% B+ G2 J2 m. [+ Itvb now,tvbnow,bttvbHow to identify Septoria Leaf Spot
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Symptoms 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
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2 ~$ b6 ]  J  B4 i% Ishape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center.
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1 @8 _$ C/ o2 F1 \  T5 r7 p( h$ ktvb now,tvbnow,bttvbSmall 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/ ^) R7 I6 A  J4 p# E

9 T( c5 o7 X& j( ltvb now,tvbnow,bttvbinfection of fruit
is rare.
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How to Prevent and Control Early Blight and www3.tvboxnow.com5 ]  V/ c6 d% q
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Septoria Leaf Spot
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( }/ ^7 ^1 k- x* ?6 UFollow the 12 easy steps below to enjoy a
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long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.www3.tvboxnow.com! f8 e" E2 j% A7 s

( ?  ?& m6 c5 e' J% u: v# N; f' pwww3.tvboxnow.comWeed your garden. Some weeds,
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7 r) N, d9 n! 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。like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.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。' U" z6 x, H1 [; t4 Q( b) u" A3 _

" k0 O/ U+ B6 j; b* R3 N7 tRotate crop locations. Don’t tvb now,tvbnow,bttvb, Q2 n1 O9 V' U; I' z

) |4 N/ t0 t; r9 Vwww3.tvboxnow.complant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 公仔箱論壇+ D" b; K  j0 F4 ~) D) m, W

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/ J- m5 u1 g6 ?  x4 Y/ f) nGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
9 O* U# |( r4 {' ACover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of www3.tvboxnow.com/ D3 w4 l3 i; k* F' ^6 O
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fungus from the soil to your
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) `/ N# D! Z9 p' F3 `6 ?plants.公仔箱論壇+ @6 v2 g* R* \$ _% _

- D8 N- X$ v6 ?% _$ c公仔箱論壇Stake or cage plants to keep them tvb now,tvbnow,bttvb6 C. t! l$ u; t

0 c# Y) s, A; n6 @$ P  Yoff 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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$ h5 a3 a' b  T# |$ e7 }* Jwww3.tvboxnow.comcages. 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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space above the soil without any leaves. Do not use www3.tvboxnow.com) w0 Y  m! A2 w

- K# g% B\" g% x- S% ~0 K0 j9 b. w\" E; 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。overhead watering
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Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
$ t7 B  @( z' Jtvb 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
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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 ) h8 _! e+ {1 }$ f4 r

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plants
are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the 公仔箱論壇7 r; s! E) j! X
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early 公仔箱論壇0 b" n- e' z. e3 u8 W7 U% s: A

% K! {- r4 L) f  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。enough. If a plant is heavily infected公仔箱論壇  O6 v% a; f3 x: ^
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, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 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。; t: B6 M* A. \- g: a! B

7 T# K0 n' j6 f3 D3 C; c; ktvb now,tvbnow,bttvbto remove diseased leaves should be disinfected before being used on a different plant.
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2 k" m! Q* {% R) k: W. p2 Ztvb now,tvbnow,bttvbSpray plants to prevent and control the 公仔箱論壇& }* t. O- I' j9 x+ u3 N

( j! s  `1 e8 F0 |www3.tvboxnow.comspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try 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。; J- O6 J4 ~8 ^- P+ e
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GreenCure.
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Late Blight on Tomato Plants
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% t& f6 z; v) b6 M8 j公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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# t9 |) {2 o. Z3 b5 I' A公仔箱論壇plants in a garden. Once a tomato plant tvb now,tvbnow,bttvb& n; d# H9 G" U8 ^
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
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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
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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& W6 X3 _9 o  i& y+ L7 B0 E+ Ktvb now,tvbnow,bttvbSeptoria leaf spot infections will also help prevent late blight infections.
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