[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 ( q& J3 ~. V: l0 [$ O$ R1 [

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.7 E% W0 o0 ^  _3 C7 o  R. k9 s' a4 W

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 公仔箱論壇- L5 L( f7 w; l3 n' B

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown

in color and form concentric rings, or a 公仔箱論壇4 u( B- @; L3 G1 E

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb+ x9 L/ P8 p4 k4 d/ t9 T& Z

leaves may fall off. Extensive loss . C- `& ]# C0 c4 ?/ S
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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 Spot! v6 \0 e2 Y# K0 ?" Z) u* r
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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 公仔箱論壇: z- Y' E7 [4 C# R% L; ~
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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. www.tvboxnow.com: P9 G# m  \8 w. ]5 w- x) U

Small dark spots, the fruiting bodies of the fungus公仔箱論壇. _0 e. F% }+ ~; A& l! u; ?\" W
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, 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.
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How to Prevent and Control Early Blight and

Septoria Leaf Spot" a1 }2 |# Q" b, T! O0 t
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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。5 F* N8 G! c0 j$ _9 Y$ Z
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds,   y& I# x4 B* i1 W9 V5 y
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.www.tvboxnow.com" [5 C  p  r* F7 j2 r% G5 ]
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Rotate crop locations. Don’t $ t  W- z$ ]' `/ J  f$ b; D- `
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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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where 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.
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of

fungus from the soil to your
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plants.tvb now,tvbnow,bttvb$ _0 q6 y8 X$ f/ O/ c

Stake or cage plants to keep them
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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 www.tvboxnow.com( _5 X6 R. S+ J! `& n0 f  b
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space above the soil without any leaves. Do not use 7 E$ v8 D! C8 @' i0 [. ~! |
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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
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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 ( U) P# M4 l) M$ Q3 i
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wet. Keep your plants happy and healthy. Weak and stressed 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 `; H: }) p$ g/ a
公仔箱論壇# [\" G3 F& D+ J# [) \6 i, k
plants are more susceptible to disease.公仔箱論壇3 l8 x, I' n- y+ M! k3 c7 [3 Z

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 . ~: N* l8 [, m: H# ~- ?
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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.www.tvboxnow.com) z5 F% l" |) u6 Y
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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 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% l  V! Y. U
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GreenCure.www.tvboxnow.com1 Y2 ?; G! h1 K+ A# t
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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 $ C4 u% Z" O- I  d/ B

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, www.tvboxnow.com4 b; d8 }' M9 B3 f: T( w
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 p9 ~' r% k+ c% X1 ~1 z5 T% q! y
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

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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