[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.

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How to identify Early Blight" p, @8 `7 C5 x% g& r% i. C

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
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in color and form concentric rings, or a 公仔箱論壇  ]% C7 `6 ~7 w

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
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leaves may fall off. Extensive loss

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
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Symptoms of Septoria leaf spot also start

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.
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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/ V/ N. V/ |: u# N$ M2 t4 R5 o6 j
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infection of fruit is rare.
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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 ?5 f7 k% V, P5 R8 V( C* p' Y
How to Prevent and Control Early Blight and
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Septoria Leaf Spot
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。" O8 P( ^& A' k' L$ J4 z
Follow the 12 easy steps below to enjoy a 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。' B. A: Y0 ]4 n# S$ D# H  ~

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds, tvb now,tvbnow,bttvb- [' L% s8 y" B' S; a! c$ f
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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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。: e8 H1 r, n2 E! T- e- A! Q+ f
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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 ) e+ m' w. H  O; N. h0 Q
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where tomatoes were grown.4 f1 m* G1 ?% V$ `
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。1 v7 d2 ~8 N0 f% V! m) h- O
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5.39.217.76& }6 j5 A0 u2 Q7 Q
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。3 C- B- \% ]; L- \' G

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。& T0 L0 D5 y9 A/ V6 V4 Z+ Q9 r' K9 z
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plants.

Stake or cage plants to keep them ' R0 `( |6 Y; [# ]9 o
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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 ' C' Z6 B3 {/ T5 U! W/ F

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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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。2 L, |( O% u\" I

overhead watering.
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
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 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。' @% K8 M) Z1 Y9 }

fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 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, k' X2 ]! A0 @+ J4 b
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wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇3 Z: F; c9 L  K. S5 m) ~
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plants are more susceptible to disease.公仔箱論壇2 l" P5 w, s0 @" y; \/ e! w
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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

, 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.5.39.217.764 X% I2 p& a* T& S  e, z

Spray plants to prevent and control the

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 5 m% L# O! ]! x4 z5 ?

GreenCure.公仔箱論壇1 n- H3 b& a' [0 P
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Late Blight on Tomato Plants

Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato

plants in a garden. Once a tomato plant 4 F6 Q6 Y% K! b6 [& S
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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) \* u/ |' Y2 y7 E% {

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇  ?6 k* i( X( ~4 R1 j6 b7 W" R

Septoria leaf spot infections will also help prevent late blight infections.

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