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標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

作者: 6t6t 時間: 2019-4-13 05:03 PM 標題: 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 4 o5 i9 |5 f# e7 y' Q  c) J7 |

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

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
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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 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' z: f  i. f" Y; u! G& d5 k- s

in color and form concentric rings, or a + c4 A$ I- z8 E. s! B
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, " I1 {: a3 B9 F5 w# Q# E
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leaves may fall off. Extensive loss
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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 SpotTVBNOW 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。. m. _3 c9 W5 t0 }8 Y1 G
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Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb* N& E8 p% D* X1 C! d  b4 N: Z: X) B  O
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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 B$ a  E9 H7 i/ G( Z% ?- V+ b
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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.

Small dark spots, the fruiting bodies of the fungus: }- O' p( ]* k% J5 J, Q
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry + h* ~; ~5 _! V! O% s! I/ O/ t6 c. H

and dead. Stems can also become infected but

infection of fruit is rare.tvb now,tvbnow,bttvb: u6 v: w; K% d# j4 C

How to Prevent and Control Early Blight and

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.

Weed your garden. Some weeds, + g# `3 ]8 R% ?

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants., R, O4 T. }9 ]9 }" D

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。2 ^9 B8 L8 n! H7 q% H

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

fungus from the soil to your + p5 T0 W6 |2 a* m

plants.9 b$ y8 y  }4 i* T' t

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) u! G# a! h( Y& ]/ x

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

overhead watering. 5.39.217.77:88983 ^% N2 s2 i% P4 f
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. tvb now,tvbnow,bttvb$ f5 S  u; x, v9 L9 Y4 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 公仔箱論壇% o6 Y  N6 h, \$ G0 ]) p& k! s
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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 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 P8 ~: q# E7 D& g9 h

wet. Keep your plants happy and healthy. Weak and stressed # U! O0 C) W2 _- I8 t& [
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plants are more susceptible to disease.: k  h/ q2 l) j$ \* C! k

Remove and destroy or throw away diseased leaves, both off the 8 T) l' ]\" m* Z2 G\" P; m1 P
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb1 K  g5 e; {. I3 X9 X
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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 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 I( _% F% d) y) ^% h

to remove diseased leaves should be disinfected before being used on a different plant.
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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 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 {0 i. A0 o/ ^1 E- a- N% q
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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。* J" u" p' F; ~( J

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

plants in a garden. Once a tomato plant 5.39.217.77:8898* x: ^. L4 ?8 T% Z
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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

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

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