[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.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。. m: T/ k! h2 H2 [; |
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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

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 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。. D+ s7 e: d6 f7 `
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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.

How to identify Septoria 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。1 w7 U, z$ h: i! U8 D3 Q
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Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb+ i: j1 e9 j0 @  O- f: Y

on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change * t  e6 b# Y, g- N7 @* ^

shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 公仔箱論壇, U% w& E8 A6 }

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 % b! d# S5 z* c# v8 e" T% c8 [
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and dead. Stems can also become infected but / X* v; A! c3 L3 j. u6 x5 i* y8 m
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infection of fruit is rare.
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How to Prevent and Control Early Blight and 8 Q; w8 g; |1 o- P0 y
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Septoria Leaf Spot公仔箱論壇' ^- c7 g7 w- r* N! w, y9 z

Follow the 12 easy steps below to enjoy a 5 X! b8 P8 `\" n, ?

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb* g% B5 X, Q9 N& g- e6 O# w
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Weed your garden. Some weeds, 公仔箱論壇( M: N1 p/ C& S1 y1 D1 V  c# q
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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。' ~' x  c. [7 a. P' M! E: f+ z

Rotate crop locations. Don’t tvb now,tvbnow,bttvb' Z' ?' C' C- W, a, }; f9 P* N
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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 公仔箱論壇* M% @4 u6 X0 l; L' A- I
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where tomatoes were grown.

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇; f. c- \- r* m$ P) A! F
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。" H0 u5 `$ j+ c
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fungus from the soil to your

plants." ^* s7 K6 E! [# g. |, v

Stake or cage plants to keep them

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 公仔箱論壇' D8 @$ C, z; d

space above the soil without any leaves. Do not use
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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 ) f, b: U7 [/ [" y& T5 @  w7 W
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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 tvb now,tvbnow,bttvb8 R2 N  g, Q7 ?. s

wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb4 p* C3 H) l, M( p* s4 I
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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* S+ _: b% r5 M8 P, z9 H

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.

Spray plants to prevent and control the 5.39.217.77& l( d+ ^' f- g$ l. ~5 ~+ ]! w
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 3 Y- P' U) a9 F: K9 V) d

GreenCure.
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Late Blight on Tomato Plants5.39.217.77- i+ t! t* {3 c# T) P- u3 o9 h
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 5.39.217.77" s- T$ f; S3 E8 n; u( Z/ W
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plants in a garden. Once a tomato plant 6 z* E% T, _! A# `
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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

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

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