[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.tvb now,tvbnow,bttvb- r9 D- _. |4 ?2 A' k. O
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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
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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

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,

leaves may fall off. Extensive loss 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 o" G& {* @7 h% L9 \" V

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。4 o! x) \& K) O) J/ d) i; M0 o

Symptoms of Septoria leaf spot also start 公仔箱論壇  i; z6 q+ b3 B

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. ; I  f( Z1 o5 x3 C! F) X9 V

Small dark spots, the fruiting bodies of the fungusTVBNOW 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。; O' g  L/ P! C1 `% S5 v

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry % f  p. D' g1 o: R- {

and dead. Stems can also become infected but

infection of fruit is rare.tvb now,tvbnow,bttvb* [* a5 ]" _' w! d
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How to Prevent and Control Early Blight and + v$ b# B$ i1 g+ k/ F% R& A: ?

Septoria Leaf Spot公仔箱論壇6 {8 E/ [6 T; T# N) V: ]5 L

Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.. Z  @8 U. `/ i) O3 e- t
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Weed your garden. Some weeds, - }  H) S. B& R9 y9 _

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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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 , Z3 F3 R$ C3 E+ ^- `/ y; L+ ~
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where tomatoes were grown.; ?% z8 k6 q* i
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.; @9 L- f  k1 ]3 F0 W
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 公仔箱論壇. B$ O; \$ A  m; R. X# X

plants.+ \2 W4 z, W# k- B* }% J5 G

Stake or cage plants to keep them ' o4 Y9 _" |- x+ }8 s

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and / J1 l3 O# A# B: W3 }

cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 公仔箱論壇. C6 t5 p- p0 `- a8 G. T

space above the soil without any leaves. Do not use
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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. ; ^: V, z& r* \/ D
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+ t% o% M+ {7 Z. e+ R3 j

fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are * L/ e2 K6 \: w
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wet. Keep your plants happy and healthy. Weak and stressed

plants are more susceptible to disease.

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 公仔箱論壇- F3 U* e3 J* ]) n
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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 tvb now,tvbnow,bttvb# v: f. o8 G4 ]1 W1 C, N
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to remove diseased leaves should be disinfected before being used on a different plant.

Spray plants to prevent and control the ! p% k, m9 y3 I# c% t) k) }$ d
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try ' |, M6 x" x! e

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。0 J* N3 S, h3 `* |* k; h
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- Y. J, ]" K/ T
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Late Blight on Tomato Plants

Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb  C; Y: u! a8 o  M9 m9 v

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,

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 5.39.217.76* p* s8 f1 N6 I; `! F8 w3 T6 B4 e
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Septoria leaf spot infections will also help prevent late blight infections.

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