[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 * r1 _2 F1 H, W* V, S! A

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.! c3 s9 R$ k$ q  |2 B+ j/ X6 [
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How to identify Early Blight

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 # |! w7 J: ?! e

in color and form concentric rings, or a os.tvboxnow.com; t2 v* f. Q$ `\" ^' o$ a% Y7 N
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇9 O7 P$ N& g6 g) ~* W, C
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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.3 B( O% R4 [' b4 w1 ~. P

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How to identify Septoria Leaf Spot: i, {4 M) X/ x3 A. I' P

Symptoms of Septoria leaf spot also start 6 x8 v) m2 I+ [3 z% n# u
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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

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。# s) S# ^! Z5 D
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Small dark spots, the fruiting bodies of the fungus

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry

and dead. Stems can also become infected but
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infection of fruit is rare.

How to Prevent and Control Early Blight and

Septoria Leaf Spot公仔箱論壇+ T1 C( M+ Z( {5 c! O9 J3 Q; C
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Follow the 12 easy steps below to enjoy a 公仔箱論壇* D; S% B! c  W9 U! r
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb/ S, U/ k4 u6 t* O5 e; b

Weed your garden. Some weeds, : g# x0 b, d/ n# H: I

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇7 _9 e: k, g  Z8 ~& b2 c9 j8 y7 {. o5 d
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Rotate crop locations. Don’t tvb now,tvbnow,bttvb8 t' a8 b, I' m5 a1 N  K, F% w0 H

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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where tomatoes were grown.os.tvboxnow.com/ C6 f- \  N5 x( u- S8 F
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread 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。6 ~  ?, \, z: f+ c

fungus from the soil to your 公仔箱論壇' Z% `2 A) M5 m( n6 X* t

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。: S, r. B+ ^& F

Stake or cage plants to keep them 公仔箱論壇* G2 Y) `  B7 |3 F, V4 ^

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 # \7 |! d: \* t4 ~

space above the soil without any leaves. Do not use tvb now,tvbnow,bttvb4 F. f5 D1 o* i' Y% |
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overhead watering. os.tvboxnow.com/ D+ R) L9 X( L& G
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 4 @/ C* I- n, B7 i* A, [7 j! A3 w7 k
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 公仔箱論壇# J7 _' w3 r$ D  j1 p6 x
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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 公仔箱論壇5 \; d' Z7 h  l- p8 O3 k# }( x9 {

wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇! H- }. h3 Q: 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 1 c* P1 }6 p- u\" i. f8 `& }

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\" B\" u# c' ^5 w& u3 \

, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used
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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
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try

GreenCure.2 e/ x) {0 b+ t0 E& o6 y# |
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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。- c) R/ e8 a0 |* `
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb. V6 q- E3 R, {% J7 ?
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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,
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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 7 Q) @. s0 `7 O( E
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Septoria leaf spot infections will also help prevent late blight infections.

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