[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 - C* Y+ H7 f, D. Z

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.公仔箱論壇& s& b$ D4 [6 t6 t
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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
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in color and form concentric rings, or a
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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 5.39.217.764 c* e( m! h- s9 l0 e
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.5.39.217.767 c# d) G4 o! ^) N9 y# R0 h; B" S
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How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start
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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. 5.39.217.763 H* v1 S* W$ d0 H- a

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
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and dead. Stems can also become infected but 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。/ ?- o  H8 I! d# r\" u

infection of fruit is rare.tvb now,tvbnow,bttvb1 O. g3 E- _+ Q, Z

How to Prevent and Control Early Blight and ; `( b0 }! ?9 k8 t, T2 s8 G. k
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Septoria Leaf Spot

Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.

Weed your garden. Some weeds, 1 w/ j( o$ d8 }$ |9 r! y! g

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。# S, w, q8 v+ A$ U

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 ( C" X3 [% Y, l7 B7 R

where tomatoes were grown.

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb) N- I: v+ ]$ f: G% g0 z3 h
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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plants.公仔箱論壇9 A2 [& h* v8 W5 I

Stake or cage plants to keep them ; }' l$ M1 f: {1 _" v* I

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and tvb now,tvbnow,bttvb' J' W& t) h- c3 ~4 Y
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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

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。% ~5 J7 ?- i2 f) D( g: R

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
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wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb! y+ i* f9 I6 D# X: [) e/ B3 b
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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
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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公仔箱論壇; R+ x. V7 w9 f  n# C; V

, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 5.39.217.76% }1 Y# ~% Z, O3 l' @
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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 5.39.217.76* i/ H- j# `& }
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try

GreenCure.5.39.217.76, O4 W. y3 |1 e4 {
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Late Blight on Tomato Plants
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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 tvb now,tvbnow,bttvb  D4 H4 J+ U6 x# w- L- M
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,

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 " W  E9 w: I. T
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Septoria leaf spot infections will also help prevent late blight infections.

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