[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.公仔箱論壇# j! b3 k( l0 z) Z3 q9 ]

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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 5.39.217.776 x* s5 }* Z9 z0 y4 V( w

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 5.39.217.77. J9 C4 a2 P5 l3 K+ `5 }

in color and form concentric rings, or a

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,

leaves may fall off. Extensive loss 3 g$ u& h" f; N; C) e9 u; o# [

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( R/ x/ _6 |& d$ `7 m& i
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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
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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 fungus' X+ T0 x& {, r9 d. D, E) E# U- `
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, 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/ X- i# w) ?, I- N  W& v8 a0 e
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and dead. Stems can also become infected but
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infection of fruit is rare.  X' h6 e" r5 K/ t
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How to Prevent and Control Early Blight and
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Septoria Leaf Spot

Follow the 12 easy steps below to enjoy a 0 y3 q$ }. H3 E  N/ l9 a9 L

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.
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Rotate crop locations. Don’t
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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

where tomatoes were grown.5.39.217.77* x; F. f# c$ g6 w. M9 t

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 5.39.217.77; b! V) _/ \  h1 `$ b  X

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。+ p+ i  d2 Z+ W+ y
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plants.5.39.217.771 R$ q& v. x2 m. }) }

Stake or cage plants to keep them 5.39.217.772 o* c6 q% g# z/ \3 o: g# F
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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 公仔箱論壇) L' t8 n% v' r: L, O4 S
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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 tvb now,tvbnow,bttvb% W2 R7 \; ~# ?8 C* H' y9 a: H* ~

space above the soil without any leaves. Do not use % K0 Q0 C1 ]# m. h9 B4 ~
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overhead watering. . F) h9 N. j4 }; U
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。5 h1 a. F* P2 z# ?% j
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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 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  T# E) A! V: t5 k
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wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇! f' I\" A8 z- Y& n) s7 N; O

plants are more susceptible to disease.4 Q: k  @7 u, {# h! S( N

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 , }7 ~% _4 g! c2 Q7 l* B

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

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

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try ; Q! `3 ^2 e# I1 w4 H

GreenCure.

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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 公仔箱論壇  s7 H* Q- F! u( M* B2 \% Z5 D% X
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plants in a garden. Once a tomato plant tvb now,tvbnow,bttvb# c5 j+ y# N$ c/ K) X

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

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