[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 6 a; m' s& v' \) X- A

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.5.39.217.77+ |' {0 t1 n* p3 B8 ]+ t9 N
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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 tvb now,tvbnow,bttvb9 C; e0 @9 ]- m% |6 [' W

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,
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leaves may fall off. Extensive loss

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.tvb now,tvbnow,bttvb$ U8 w4 z2 C2 a4 x! U

How to identify Septoria Leaf Spot2 n8 f3 q/ [4 T% ?/ P% I2 ~

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. * y' l3 F2 `7 j5 @$ C7 r" j, e

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
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and dead. Stems can also become infected but
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infection of fruit is rare.

How to Prevent and Control Early Blight and ! W% d. D' q; Y( y+ ~
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Septoria Leaf Spot公仔箱論壇, n6 j* f9 ~9 w$ G0 v$ p* P
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Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.; o% ?  |. F( @' z. M$ i6 }/ {. ^

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

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.7 y; l6 Q' R/ n& Q0 Y
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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。4 f$ K  T- y" p3 |8 }% X
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 3 Z' n- a4 I3 N; y8 I
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fungus from the soil to your

plants.

Stake or cage plants to keep them 5.39.217.777 @+ K+ N  _4 q4 I! j+ m+ a

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。8 O0 _! n$ [: ^- a" {8 c( e
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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 ; R( [; Y# Q, _+ [7 c
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space above the soil without any leaves. Do not use

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. 9 c9 O4 S7 E' G9 Z
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 公仔箱論壇" B% M. s4 s2 [0 j% \' U; ?4 H2 |
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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( ]. i2 s" w- f# s
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wet. Keep your plants happy and healthy. Weak and stressed

plants are more susceptible to disease.5.39.217.778 k8 h6 E) Z8 X! t

Remove and destroy or throw away diseased leaves, both off the 9 r2 _7 w; H% Z, D: y\" W

plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 5.39.217.77. D6 [; g, t7 B: ]4 U

enough. If a plant is heavily infected  K  V1 K7 g, q1 F: v) R7 n+ @  t' R

, 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.
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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 tvb now,tvbnow,bttvb4 m2 F4 R/ q* u" `: r
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GreenCure.6 }% M) ?9 d0 c- g. u
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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
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plants in a garden. Once a tomato plant
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 1 E- W4 Z- X1 l/ m
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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 blight5.39.217.773 S- x% @0 N4 y\" p( ?/ k' p( q, S

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and ' }1 Y4 ^1 K( L3 \9 B
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Septoria leaf spot infections will also help prevent late blight infections.

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