[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 ^6 v. o! E, B& M0 K! E: X
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas./ M/ u) R8 J4 U  B2 Z" ^( T0 Y  w

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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 # @& w* l  r( O7 [+ U

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown " E( `# m" G4 C

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, 5 S6 k- z2 f; Q

leaves may fall off. Extensive loss - Y& p: m1 H3 h* g
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.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。$ v8 ^" c2 i9 a7 G$ S& {

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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 公仔箱論壇* u" h% ?; G+ U
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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.
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Small dark spots, the fruiting bodies of the fungus公仔箱論壇$ n- Z\" ~' G3 c; P# l$ S

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 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 W2 c- h2 k/ r+ G: ^* }: K1 b( a
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and dead. Stems can also become infected but 公仔箱論壇* J9 r% ?# V$ i' f2 d7 g
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infection of fruit is rare.
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How to Prevent and Control Early Blight 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。# F* ?! v2 t; n+ }
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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, tvb now,tvbnow,bttvb2 \, q/ g$ a5 K

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.
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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 / F7 p2 d5 e# U! S$ C" T7 h

fungus from the soil to your
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plants.tvb now,tvbnow,bttvb& H5 U5 |6 ~! z" C) ^
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Stake or cage plants to keep them 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" J, q; v* f% N  I' _. h- A

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and * c3 x9 }) l3 S  ?3 _
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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
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overhead watering. 5.39.217.774 S, N4 h4 x+ a5 o% y& [
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 公仔箱論壇5 W$ _, V6 [! g; B1 g( o
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。: [* `1 \  O" I
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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 公仔箱論壇3 v# Z; Z+ L1 L: [; D" }* P

wet. Keep your plants happy and healthy. Weak and stressed 4 W% d4 f! e1 x$ g* y/ ?5 @$ a0 x

plants are more susceptible to disease.

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 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。7 g+ q; x* ]1 a3 _* g$ z

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 tvb now,tvbnow,bttvb9 t% k( N7 J6 h1 M3 k) z& T
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to remove diseased leaves should be disinfected before being used on a different plant.3 R# N) v+ C7 {: X- M2 x
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Spray plants to prevent and control the tvb now,tvbnow,bttvb. p; a) o. K4 n, d: I6 |4 `9 U

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb- E2 D, E  D8 e* Y; U* ]/ o

GreenCure.5.39.217.779 N% |5 f& E; |/ y3 S
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Late Blight on Tomato Plantstvb now,tvbnow,bttvb  t, c, |4 {# Q- o! j

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 ! Y8 f' N. |: g0 c% r& C5 Y

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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