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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) b, H: @- i4 C/ }# C' V5.39.217.77:8898can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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$ E; }# {7 B. r0 J% JHow to identify Early Blight公仔箱論壇9 G/ K4 g C# \2 _: w7 G
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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 5.39.217.77:88989 W/ A* m6 u: n; @
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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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% T( I7 z @/ T0 o# N公仔箱論壇in color and form concentric rings, or a
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
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) i! b! x4 Z( A- Q公仔箱論壇leaves may fall off. Extensive loss
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/ o2 p4 V1 E0 V. G0 K6 p" p0 jTVBNOW 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。of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇7 r3 v2 L) Q/ z. V- ]; |5 P
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! q1 Y! t \1 z# ?" r7 [公仔箱論壇How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start % k" |% `; m: x8 H) H" O6 r- \
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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
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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.
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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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K9 v, F6 E: b: Xand dead. Stems can also become infected but C. F- ?8 N. ^
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infection of fruit is rare.
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2 w; A6 W% p: Q' }* i7 I% NHow to Prevent and Control Early Blight and 公仔箱論壇- ~( w( i; {- { v0 `+ s
& A* J5 h8 o; f) WSeptoria Leaf Spot$ L% x$ \/ ]3 n! T! X7 H
. L% S( Z+ ^7 N& P( T# Y% vFollow the 12 easy steps below to enjoy a . P6 V9 \* H/ S7 u E/ Z
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇) y' I" Z1 B. U6 p
, @, _1 x# j/ m q( A公仔箱論壇Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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9 X# d6 e" L0 D# P# @; V/ ^/ wTVBNOW 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。Rotate crop locations. Don’t 公仔箱論壇6 z4 B* v& U9 w+ \
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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 0 s* R' |& s- A, y. f
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
* [0 q+ U5 \5 a _# vTVBNOW 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。Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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9 S$ u# N( C$ {! C# a8 t/ l6 @) J$ lTVBNOW 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。fungus from the soil to your 8 w. U9 l) D9 j9 ?
4 @! f' l I3 i9 k9 ztvb now,tvbnow,bttvbplants.
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2 Q( o* x0 t5 V9 s5.39.217.77:8898Stake 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
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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
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\" Q6 W6 \& L. V s& \0 W0 \# s& otvb now,tvbnow,bttvboverhead watering. 5.39.217.77:8898/ T# x9 f- D$ y5 _+ p
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
, u9 m- \8 i5 X* {/ U9 w5.39.217.77:8898Consider 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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( X! i2 O* c3 c# a9 ]" {, b2 v公仔箱論壇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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# ], D' S/ O O$ B+ U4 M$ V% B3 ftvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed % t; S1 ?* R# S0 i- z2 W
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plants are more susceptible to disease.
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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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! ~7 Y. k. z. Z# \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。enough. If a plant is heavily infected5.39.217.77:8898\" q3 s\" L! [2 M9 [6 E1 u
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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 * M% e" e4 r6 N) u9 I
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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
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 8 ~; `+ w r% i& U8 n j
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GreenCure.公仔箱論壇- t: i% ~. B1 X# }7 [
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/ X$ l F) [) v( Ltvb now,tvbnow,bttvbLate 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 tvb now,tvbnow,bttvb8 m y. ?! P8 q
" Z7 l, B* z7 m3 n' {: d- F+ K" I8 vtvb now,tvbnow,bttvbplants in a garden. Once a tomato plant
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2 Y' [) ?6 {' y. p4 fis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 3 |2 K3 M9 i) V8 x' Q! L2 E) b
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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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$ M* {7 X; x3 w/ X; K9 x7 }5.39.217.77:8898 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 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。8 z9 G- S& J) H9 D# \. Q
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Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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