[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.www.tvboxnow.com5 y, e6 c; O. O( Z& S0 Z) ?

How to identify Early Blight
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to www.tvboxnow.com% F* s2 Y/ \) |: x2 h5 z  W

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。$ I' c$ m( [# @

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 tvb now,tvbnow,bttvb; I; R, ?. x6 l

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.7 _, v2 k' F: a
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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.

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 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。, }' v0 D  |; [- {# x

and dead. Stems can also become infected but 公仔箱論壇# P8 W# y4 @9 ^2 j6 C; u
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infection of fruit is rare.www.tvboxnow.com4 [6 [& p! P" G- U/ \
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How to Prevent and Control Early Blight and

Septoria Leaf Spottvb now,tvbnow,bttvb2 ?/ m  A$ a& a$ ]
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Follow the 12 easy steps below to enjoy a
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds, 1 h8 m- W1 p1 L# O& @

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.tvb now,tvbnow,bttvb0 |& A4 s3 \8 c+ d& t# q

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 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& g  [+ j; ?5 I) C6 k

where tomatoes were grown.3 K( |9 a8 a. ?/ {

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb; g0 p% ~4 j( n. U3 n9 e( d
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of www.tvboxnow.com2 V( E4 @  O! ~% [# z) U0 T
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fungus from the soil to your
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plants.1 g* Z+ H3 l; x( h3 g% l# @
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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 www.tvboxnow.com# X9 }4 }0 {* A' R. s( W) c  V
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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
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space above the soil without any leaves. Do not use 5 W5 P; ?2 _\" |' l4 }
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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. 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 }$ `& F! s- R$ J( o  x0 I
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 . c* f. b" D9 Z" A) T, W% F

wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb6 ~( Q! O/ Z( H1 E6 c) S

plants are more susceptible to disease.公仔箱論壇1 D  l, R4 I1 S8 O2 u. J
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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

enough. If a plant is heavily infectedwww.tvboxnow.com7 z7 [1 I1 n; T
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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 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。# }% j9 M2 z7 T/ E$ W+ m

to remove diseased leaves should be disinfected before being used on a different plant.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+ O" k5 ], z' _4 C# S
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Spray plants to prevent and control the

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try " Q% J" A9 `3 R3 D4 s" s. d" y
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GreenCure.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。9 U' I5 r* g0 n/ @9 X

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Late Blight on Tomato Plants  S* z# c+ f' }, a0 ^" }
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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。5 x: i2 J* ^0 X- Y$ Y8 k! `
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plants in a garden. Once a tomato plant tvb now,tvbnow,bttvb$ b. G6 i4 r& O: ]% p$ E$ z2 a

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。" n5 Q, y/ P( j) 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公仔箱論壇7 E( l) _: X+ E* d0 L+ t
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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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