[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 & t1 J, S, q8 i! Q! Z  \

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.

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How to identify Early 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。, x/ m% h3 j# ?. V4 ^4 z
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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 * x8 s4 @% h. g% R7 C

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown

in color and form concentric rings, or a 5.39.217.77! i) V# d; Y) O9 y5 J
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, / Z9 p6 K( L: b3 p, ]9 g
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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.公仔箱論壇# d: O% V/ d+ @; I/ A# b( L: i& C

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。/ G/ {0 ~" m, N7 i/ L0 `
How to identify Septoria Leaf Spot( h* |/ ]  A; H& Z9 @4 a1 B) f

Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb( L2 z+ b4 I. X0 _' t9 y6 t
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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 7 Z8 Y* h; g/ M6 ~; r( ~

shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 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 R) M$ ~; w
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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

and dead. Stems can also become infected but
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infection of fruit is rare.
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How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb3 L8 p0 I& t  f% g# {2 A

Septoria Leaf Spottvb now,tvbnow,bttvb+ g) m: A! c3 q2 h8 A

Follow the 12 easy steps below to enjoy a 5.39.217.771 P% I9 `( [5 Z$ a; e. P
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.

Weed your garden. Some weeds, ! g3 P" L; y. L; H. h; ?. ~! ]. j

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 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。, {. b: r/ |2 D! `, \) ^! F6 |

fungus from the soil to your 5.39.217.77' X$ E8 _0 e; B  z
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plants.

Stake or cage plants to keep them tvb now,tvbnow,bttvb  x2 r5 x, x9 \' i3 N" `
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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 公仔箱論壇3 s0 z2 ]8 |8 X$ l9 T- L

cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of tvb now,tvbnow,bttvb! O7 u7 x6 I( F$ ]/ c- U

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.
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 5.39.217.77" a# k$ h( Q  a5 H8 b, N: _& O

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 l6 p& u; G  n0 x# x; N

wet. Keep your plants happy and healthy. Weak and stressed \" {2 e2 [' x0 h+ o/ H6 _2 G
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。! x7 @6 j( F# {& H# w/ t
plants are more susceptible to disease.* g2 ^) T4 O4 M# }. G, p& n  f1 y
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Remove and destroy or throw away diseased leaves, both off the 公仔箱論壇! m6 X) ]$ g2 W4 q+ @

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+ F4 g4 g1 ^4 ?\" e
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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.5.39.217.77- T$ G- x# b3 {. h( I

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 公仔箱論壇1 e; [" E5 i+ Q9 s6 P

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 5.39.217.779 {* a% }$ X2 Y+ S: W+ d5 W
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plants in a garden. Once a tomato plant 5.39.217.77- r/ m+ p$ D7 A3 r; R! s0 @, \

is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.779 ]7 l4 w) R* B( p0 O

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。- h- Y! z' |\" S; ]/ \+ w3 y

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and

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

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