[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
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can 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
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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 2 `/ w# U8 ?  [& C# o
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newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, : i" V0 E' M. ?( T7 X# P

! M- i7 _7 E6 T, bleaves 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.www3.tvboxnow.com1 Z$ G* W7 B" }) j% w
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. J8 ?+ b, A; swww3.tvboxnow.comHow to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start
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2 l# E; h% [6 i) Lwww3.tvboxnow.comon 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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9 H/ D: C0 L, O* c3 p8 V8 kTVBNOW 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。shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. www3.tvboxnow.com$ \& R& Z% u( G3 B0 |3 l/ _( w

6 b- X* B8 N% g3 c6 }& \) Itvb 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 www3.tvboxnow.com" ~# m/ D& Y2 s6 E
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and dead. Stems can also become infected but 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 s8 F! T# J% V
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infection of fruit is rare.tvb now,tvbnow,bttvb" c( s! I9 j. b" o& C/ a& v0 |3 z
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How to Prevent and Control Early Blight and
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9 j+ X% y\" E' s3 z) |www3.tvboxnow.comSeptoria Leaf SpotTVBNOW 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 i& w' l& t6 O$ |3 X5 L
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Follow the 12 easy steps below to enjoy a
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- B/ t( m/ L# L, |. z% ]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。long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.  N; N( g4 w2 @1 A8 `

9 T, }6 U; c: v; p3 M, jwww3.tvboxnow.comWeed your garden. Some weeds, 6 r2 Z1 K* R$ D+ j
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇6 _% O) N: n) k+ v; s! F
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Rotate crop locations. Don’t 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。( F0 O, n, Y2 W: y0 |( j
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plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
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6 b8 t0 Z4 @0 m+ v3 S% `+ P" p0 fwhere tomatoes were grown.
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
; ]' p$ g$ X; Z; A( `公仔箱論壇Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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plants.
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Stake or cage plants to keep them & x8 B+ K4 G5 U
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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。. r' K4 G" l7 I7 I! ]
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cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of tvb now,tvbnow,bttvb9 T* s* q( v  b2 C: Z8 r

$ v  d; e/ s* p% _' J+ `space above the soil without any leaves. Do not use 7 _0 o+ A' c$ g6 o, w+ f
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overhead watering. www3.tvboxnow.com2 U( Z( e- i" O' l+ O
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
9 O' X% x- D$ u1 b* A  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。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
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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
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plants are more susceptible to disease.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 M7 ?  X) U& N; w& I
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Remove and destroy or throw away diseased leaves, both off the www3.tvboxnow.com. k3 _+ m8 O\" L0 c' I8 a
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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( F0 X6 l2 }- v. K4 R* |www3.tvboxnow.comenough. If a plant is heavily infected公仔箱論壇+ {  m& h. j4 f( s9 y9 R

  Z7 h9 a' r# N- e: 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。, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used tvb now,tvbnow,bttvb" w( \+ m# F$ l- I
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to remove diseased leaves should be disinfected before being used on a different plant.
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Spray plants to prevent and control the + g& P. t6 \; |
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb2 @$ u/ a$ P$ M% A2 I' q1 |

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( S6 k8 W+ h9 T# c& e公仔箱論壇Late Blight on Tomato Plants
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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。) g# B8 d- C# L* l' d

- y; E4 ]' S% Z- x5 Z% rtvb now,tvbnow,bttvbplants in a garden. Once a tomato 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。3 r. K8 M9 t& ^2 @+ L
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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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3 O6 g$ b' D3 g( w  e" k, O; b2 I& 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。Septoria leaf spot infections will also help prevent late blight infections.