[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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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb" p8 [( |- j* R2 e( m" S
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How to identify Early Blight5.39.217.77. G2 e2 V1 s8 C5 `) f  P, I9 _9 W1 u; {
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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
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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 2 `4 m/ K: D/ S. Q

in color and form concentric rings, or a
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,

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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How to identify Septoria Leaf Spot) }! j7 [2 ]5 |/ {9 k: r
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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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shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center.

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。5 {2 P1 [/ q+ @+ ^/ L# R\" o! P7 n

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 公仔箱論壇3 U* [7 H9 J% W  G9 {0 E4 w
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and dead. Stems can also become infected but 公仔箱論壇, i$ R; ]9 p, e
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infection of fruit is rare.3 G3 `4 U3 n4 V! F& i0 U8 O
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How to Prevent and Control Early Blight and

Septoria Leaf Spot公仔箱論壇% n; N0 |- y6 L) ]8 A5 P$ R  c+ A
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Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.7 T" @4 R4 _  O" o3 t5 O
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Rotate crop locations. Don’t tvb now,tvbnow,bttvb9 V+ s# P8 q# q8 D& h# ?2 Y; O; W
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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 5.39.217.77* Q4 d, L- o/ B- K8 e+ t) g! h! ~

where 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。" A' l" c% A% _- r& `- o
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.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。/ Q" ]5 b' s( K% C
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 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。- c0 m3 {9 Q, P9 ]3 o6 H
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plants.
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Stake or cage plants to keep them 公仔箱論壇( f% t6 u& k" d+ \  C/ U( I* @4 e
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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
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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

space above the soil without any leaves. Do not use 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 q' O$ ~: Y+ z; V  X, o2 m
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overhead watering. tvb now,tvbnow,bttvb# c/ S' C' q% e5 I4 ^" z- T; [
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your 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。' j1 g8 s7 ]' a& l
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 5.39.217.77% K/ ?  P# E7 Z4 G: x. E
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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 1 x9 r# v3 }! C9 P

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。% t3 c, Q7 u8 F
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Remove and destroy or throw away diseased leaves, both off the

plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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enough. If a plant is heavily infected
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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

to remove diseased leaves should be disinfected before being used on a different plant.) N7 u& D* R& p# H( P! k2 p

Spray plants to prevent and control the
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb, f" r: H9 v& g3 U- W' {1 I; G

GreenCure.5.39.217.77) F' S' e' B1 ~$ E( W; j8 _
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Late Blight on Tomato Plants公仔箱論壇" F" p- b& E3 Q# \0 T

Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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plants in a garden. Once a tomato plant

is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇' B6 c3 }' e9 f3 h  O! V# x9 `
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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公仔箱論壇5 W, _5 W) G/ L. ]
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight 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。, k# K  t. p6 E0 B2 P
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Septoria leaf spot infections will also help prevent late blight infections.

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