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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.) C  ~# t+ h7 D" L: A! k8 B, A' {
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How to identify Early 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。4 P( I- X" D7 e, @$ B

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! a' C% L, c. D! }- P. S, h
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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 , g4 b3 p0 m; V1 W% z% C# \

in color and form concentric rings, or a 公仔箱論壇& q1 U6 W\" t$ d3 o# c

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb6 ?! O( D, g" X6 z4 |+ w- s: Z
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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。$ ^( B/ C# D; N* A2 b

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

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 " ^' x5 L8 m7 G% O- P$ X) Z
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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. 7 q# ]6 F* ]+ f) Z+ y

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。- f  A( R: x6 Q
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infection of fruit is rare.公仔箱論壇1 ~, |$ q& T% g( ?

How to Prevent and Control Early Blight and

Septoria Leaf Spot
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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 ?9 x0 v4 F. |\" k( z* J! B

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

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.

Rotate crop locations. Don’t 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。- y% s+ Z  d: R1 @

plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in 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。6 X5 }$ W8 z' l0 P

where tomatoes were grown.

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.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。  C& ^/ |; J* q$ U
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb. I. u+ ]0 e9 e- e4 A) A* G
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fungus from the soil to your & @0 R. d: X9 G% D+ m

plants.+ f9 [2 q4 X8 p
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- Y( k& L# {7 w# {  e0 u
Stake or cage plants to keep them tvb now,tvbnow,bttvb# h! q; x2 O+ M
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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。, @, l; c7 K  b0 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 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 ?/ M$ B5 l  N# r: v

space above the soil without any leaves. Do not use # \0 [: u5 A9 n8 O, ?
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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 tvb now,tvbnow,bttvb! m0 K$ x, c! Z# C( B

wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb5 N% f\" @! t3 d8 Y/ `; @
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plants are more susceptible to disease.公仔箱論壇( [# @  z# ^2 K5 a

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 5.39.217.77:8898% O6 @* O; g6 l3 }
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enough. If a plant is heavily infected) z2 Y, f9 H3 C! |4 i: |6 i8 S7 b

, 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.

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 # L# g4 K- Y! Z5 [. j
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Late Blight on Tomato PlantsTVBNOW 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 r2 Q. H  K! P: R& H9 O
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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plants in a garden. Once a tomato plant 5.39.217.77:8898- N, V/ j7 D3 K, h) S, ]+ j

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
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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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