[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
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.$ a- o$ @0 ]- l) I' P

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How to identify Early Blighttvb now,tvbnow,bttvb2 ^( }. d) ?( v

Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 公仔箱論壇4 ~0 A/ F. S' v* U

in color and form concentric rings, or a tvb now,tvbnow,bttvb& J) b\" s' y- O$ y$ {& c0 p; ^  g

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,   A, n0 f- W: Z' ?4 z
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leaves may fall off. Extensive loss tvb now,tvbnow,bttvb+ K( c9 _6 s; k

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
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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

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
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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

infection of fruit is rare.

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How to Prevent and Control Early Blight and 3 |, C! H8 k\" J$ I2 @  h% C
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Septoria Leaf Spot
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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.
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Weed your garden. Some weeds, tvb now,tvbnow,bttvb+ d) ?% h2 O8 B  m7 g/ X# p. x
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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
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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

where tomatoes were grown.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。) E+ _& D. q# [+ g5 J# S

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
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fungus from the soil to your

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Stake or cage plants to keep them , `% ?+ l: w2 e+ Y. V! ]! d6 ]; K

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and
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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. tvb now,tvbnow,bttvb: `9 z$ k0 s3 S: F( K( U& s
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
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wet. Keep your plants happy and healthy. Weak and stressed

plants are more susceptible to disease.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 A/ V2 L8 L4 R, G. T! `+ Z
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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
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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 os.tvboxnow.com" x. [3 h2 y7 F& P

to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇5 Q6 p1 A' o7 R6 G

Spray plants to prevent and control the

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb" g8 ?8 U' t% W) I! U: ?

GreenCure.

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Late Blight on Tomato Plants
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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

is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 8 H1 @# c6 ^( I9 b+ u! `' k

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。, D+ E8 W+ k5 R+ G9 z, s. j6 {1 U
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and tvb now,tvbnow,bttvb; G, @  D/ `+ I

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

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