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標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

作者: 6t6t 時間: 2019-4-13 05:03 PM 標題: 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.tvb now,tvbnow,bttvb; \* f! P+ d+ w! \$ H
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How to identify Early Blight5.39.217.77:8898! J" p% e' C- X5 g$ F* [
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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 ! \6 J* Z2 [8 C: t
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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 2 A% W9 H; `, V

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, 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。4 r( u7 B* X9 D- n
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leaves may fall off. Extensive loss 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 |- h; t% V. a  r
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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.

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 5.39.217.77:8898$ i. d/ S6 \) @  P

and dead. Stems can also become infected but

infection of fruit is rare.; n: Q" u) k2 l" E% q5 ^( x
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How to Prevent and Control Early Blight and

Septoria Leaf Spot

Follow the 12 easy steps below to enjoy a 5.39.217.77:8898, E. w' X. L9 j6 c7 ^
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5.39.217.77:88982 x: u/ R4 l7 r  U+ e

Weed your garden. Some weeds, 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 w! _7 \  @0 B4 z

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.

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
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where tomatoes were grown.公仔箱論壇4 o6 z/ Y+ m# U5 _0 S5 s4 I; ^$ |
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇4 E8 c$ T, L) V
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

plants.
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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 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。0 u6 o8 x0 t% _# {" d# Z

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

overhead watering. 0 m' Z. ?! A4 ]! R
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 5.39.217.77:8898' x. A# y5 y8 J- N( U0 P
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 5 N2 G$ @7 A# ]: w9 {1 S1 P4 o- N

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,bttvb$ X8 U" ]9 E" k* E+ n4 Y1 K

wet. Keep your plants happy and healthy. Weak and stressed

plants are more susceptible to disease.$ j# m0 A7 t/ o! u, I- p

Remove and destroy or throw away diseased leaves, both off the 5.39.217.77:8898. T. M( x- y( x+ s

plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb+ v$ b* A. p, l! h3 {$ Y8 _' s" v
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enough. If a plant is heavily infected
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, 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
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 X! |* r& C# F+ z5 F0 O* M
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try

GreenCure.
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Late Blight on Tomato Plants1 X2 ]& a" O5 F

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

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 blightTVBNOW 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。. H+ D1 V4 f, G7 E/ v# W2 ]  S
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and % u; h( f( S1 b/ j6 p% s

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

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