[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 ' d, Q+ P$ A- Y; q: ?+ W8 M9 ?

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.www2.tvboxnow.com, `" S" ^: C" r  o6 T2 A( ]# x

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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 1 t3 V  K: d3 y: Z
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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 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。2 f' [6 o\" m\" Y
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb1 M" U% e3 W* O) E9 I

leaves may fall off. Extensive loss ) o5 j) H: o- W: N) D5 e2 w

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公仔箱論壇+ U- D( A& l8 t9 y2 p8 o

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
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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. tvb now,tvbnow,bttvb% k* @( C% J' \/ u8 V( \
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Small dark spots, the fruiting bodies of the fungustvb now,tvbnow,bttvb$ o5 ?& X4 a$ R; o8 M+ f- r( t6 E
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry www2.tvboxnow.com6 C% R: L3 X3 g+ N2 s
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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。* I+ c' h% o. g  {) Z) p

infection of fruit is rare.
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How to Prevent and Control Early Blight and 3 |\" [2 |: v\" o9 B- k
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Septoria Leaf Spottvb now,tvbnow,bttvb! x7 A4 g  o8 G& L

Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds,

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇9 d9 D6 }  I- ^6 [' J$ @

Rotate crop locations. Don’t $ @0 v  U" D+ [

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.

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 公仔箱論壇. w: [: T- \' }6 I( W) S1 r5 {+ j

fungus from the soil to your 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。& [+ _; @+ ^* v& h

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 - R+ f! E7 Q6 F" h% p- ~: ?

cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of
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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。) f9 @- ^8 ~( E+ L
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overhead watering. www2.tvboxnow.com7 a5 I+ j3 _! I) I6 ]' T( T
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. www2.tvboxnow.com, c! z) \* ]5 X" ?( v, s
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 tvb now,tvbnow,bttvb# g& [" z3 P& N# c+ b
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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 8 I3 u$ Y4 _4 ?  \8 |: S

wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇7 ~$ s$ I# K& F5 H4 ?
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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
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。, X  v: E\" `) e1 U
plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early

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." b1 Q0 y) C9 M) Z

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
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GreenCure.

Late Blight on Tomato Plants

Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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。: ^3 V# ^( x+ ~2 D2 ]
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,
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 T, q$ L6 _& k* e
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 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 G1 `- s1 W6 c1 i! l

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

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