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.公仔箱論壇+ P4 }. q6 o( w7 S
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. C; U# h, O8 |7 [5.39.217.76How 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 2 n- K1 _9 S: P2 ?* u4 J
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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。% {. Y5 p( l8 @' x$ Q' m! j
, z$ K8 I% y# d" n1 _0 Z$ Y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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leaves may fall off. Extensive loss
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Z1 F, j7 b! q( m$ e8 j& s公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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4 d7 ?0 \2 i- U8 M5 u1 kHow 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。, b7 A8 {6 X7 S' e
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Symptoms of Septoria leaf spot also start 公仔箱論壇$ R; P9 L0 W. L+ d0 G( J A
1 @5 w: |( t7 T) v, N& |0 A% 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。on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 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 ]7 U) V: ^2 f4 H
" V: T- R9 L O- y9 r8 P1 X公仔箱論壇shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. * n0 y! L& B. r1 J8 _$ E: d/ M1 }
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Small dark spots, the fruiting bodies of the fungus5.39.217.761 l# D9 w! {8 u, c% A
/ Z+ g& e\" p t% K3 i7 |; t4 h\" A, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb: Y& E+ w0 \6 |
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and dead. Stems can also become infected but
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infection of fruit is rare.公仔箱論壇; T* A+ z9 H, l1 }% j1 c0 R
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How to Prevent and Control Early Blight and
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; n9 \& D! V7 J! |% Q7 k8 _) Q5.39.217.76Septoria Leaf Spottvb now,tvbnow,bttvb6 [# \. ]* G2 N. c* V" Q( ~. B4 k, 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,
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7 A% |; R- s, y/ }! W5.39.217.76like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.) l. u; A8 I) C; ?4 r% b
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) C5 H6 p7 ?0 {0 l' L# N/ W$ p
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.0 \! H8 m- k: S+ d% R/ E+ Q7 ^. v
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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1 E4 S. ]. Q1 n* {, `. ztvb now,tvbnow,bttvbfungus from the soil to your
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plants.
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Stake or cage plants to keep them
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7 W0 r; _* a4 U% Y+ d. [. V, \tvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 5.39.217.761 k! t" o% D& \! _( y
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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 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。6 o c/ y* |; `0 z' @/ ?3 z! b" v K
) Z) s( I" Y( D& \5 g4 s公仔箱論壇space above the soil without any leaves. Do not use 公仔箱論壇% V\" ~. D. b1 r) u# x: }
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overhead watering. 公仔箱論壇; t# B) U, s$ e
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
3 _6 v( y) b5 J9 Q/ G公仔箱論壇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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" @7 n2 l* B7 B5.39.217.76fungus 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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wet. Keep your plants happy and healthy. Weak and stressed
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: w, J, R1 m$ h* ^9 Splants are more susceptible to disease.
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2 h0 r5 V/ X/ S) C+ d( d" }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。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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enough. If a plant is heavily infected1 i- a/ b; r# o$ P' W+ l\" y# r+ R
8 {$ c5 U7 g9 d9 {- rTVBNOW 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。, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used % E! D" U+ C% t# ~6 H+ N7 W
$ v S6 G/ j7 z1 X$ N w, Gto remove diseased leaves should be disinfected before being used on a different plant.8 k' ` O; A( @9 C
1 r+ U; u* k1 o! J+ z9 f公仔箱論壇Spray plants to prevent and control the 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。% D6 o' w/ a$ B/ R+ g
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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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。+ R# U% p4 i8 s( d/ 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
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1 D5 Z* g0 e% N d4 i7 Ztvb now,tvbnow,bttvbplants in a garden. Once a tomato plant 5.39.217.76$ }8 \, [! c( G3 q8 \, u
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇0 |1 C+ t* c+ ]. D2 W+ J. ^
2 U8 m6 B' \* T1 [0 `tvb now,tvbnow,bttvbwater-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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. U% d# `# p\" s 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. |
發表於 2019-4-13 05:03 PM
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