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[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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, Q) Q( ^# P" A! Ktvb now,tvbnow,bttvbcan 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 Blight
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7 g" Q9 S& R; {  p& v: h公仔箱論壇Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 1 _  X4 [. E7 P2 I- G+ q+ c

7 E6 J/ |. _* \' S! b! y1 ]. QTVBNOW 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。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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* p6 l* S$ Y  a. l$ Uos.tvboxnow.comin color and form concentric rings, or a tvb now,tvbnow,bttvb3 b4 G9 E( B, _6 S. p
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bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow,
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9 h2 n/ P  w" Z4 m5 uTVBNOW 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。leaves may fall off. Extensive loss ' \5 O6 w, _2 d& U8 U4 [
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.tvb now,tvbnow,bttvb* ?/ X" ^8 z' J, g; T
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# t( I2 T0 d1 {% o5 J% p' V) @5 rtvb now,tvbnow,bttvbHow 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。$ M3 }& C/ k& l

/ S9 p- H5 l5 u* O& a4 j* H$ \. xSymptoms of Septoria leaf spot also start
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- B1 j9 I! G9 ]& u. Q& ctvb now,tvbnow,bttvbon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change : [# @* Q: m. \% y( q& {2 }( [* u

1 R3 @; X! Z+ g$ u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.   {' B2 P$ ^; i/ Q' q
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Small dark spots, the fruiting bodies of the fungus6 U2 U  ?( I' P
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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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  B. j  f, m* E* f8 `/ X9 a2 dos.tvboxnow.comand dead. Stems can also become infected but
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- a1 l* b$ n# v, f( TTVBNOW 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。infection of fruit
is rare.tvb now,tvbnow,bttvb( F' H# i; F- O6 j* v' m& `& B" S; d

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7 W1 p& u6 K% KTVBNOW 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。How to Prevent and Control Early Blight and
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$ K1 M$ P+ w) h7 los.tvboxnow.comSeptoria Leaf Spot
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Follow the 12 easy steps below to enjoy a & C; o) D4 b2 e8 C; ?

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of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.) L% i$ c0 {  Y: i& \

: R& c9 E8 }" n; j; Etvb now,tvbnow,bttvbWeed your garden. Some weeds, 公仔箱論壇. a# ]: b! J3 S% w8 R+ v0 E
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.3 p% X: z' W1 K2 Z! [/ I
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Rotate crop locations. Don’t 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# U6 C3 y! b7 @
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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.公仔箱論壇( I3 |( r8 A& `7 g( F$ o$ R

$ E* f6 B3 u+ k0 D6 Z# `: R公仔箱論壇Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
9 f( V, `" ~" _2 gTVBNOW 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 ; R( R# d* ^7 V* s2 b

" v/ \% [7 J; @. Atvb now,tvbnow,bttvbfungus from the soil to your
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& ]4 U. h5 X7 L! `$ @/ H7 Kplants.' N' ~- k7 O3 \0 O- I3 ^9 ]6 ?. ^4 N

$ h" @$ D: [% ?$ q! T4 [os.tvboxnow.comStake or cage plants to keep them
6 N. e. p( q* o& ?4 z- i! C3 N公仔箱論壇
# m4 r5 D1 h3 _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。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 & T/ x2 g$ D2 s6 x
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space above the soil without any leaves. Do not use
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) k% w  j  N2 H: C( u+ S\" r0 Uoverhead watering
.
0 u; j; T/ F3 B8 K" Qtvb now,tvbnow,bttvbAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
& y( ~7 t6 r( M9 `$ HConsider 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  j; ~, {- M1 S# j7 u- c* ]% [

, P; X8 `; z- Z8 f3 ?4 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。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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/ y# z2 S, a0 y$ b8 X* H公仔箱論壇wet. Keep your plants happy and healthy. Weak and stressed
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are more susceptible to disease.os.tvboxnow.com2 r) m/ |2 s+ i2 r, n' b/ ~, I
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Remove and destroy or throw away diseased leaves, both off the
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plant 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
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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 公仔箱論壇* K3 V# Y7 ~# b
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to remove diseased leaves should be disinfected before being used on a different plant.1 U( _5 S4 k- m7 ?; k

* }( R( W5 |4 q, y$ ~Spray plants to prevent and control the 公仔箱論壇* n5 X# j' {/ I\" \

& I* N, l4 F* {\" {  K% h- C) K2 M. uos.tvboxnow.comspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try 2 Q# D# _3 ?; e7 r
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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 " H5 t, L8 l+ n( `& v. ~6 ?
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plants in a garden. Once a tomato plant
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' z5 q/ f: ^4 J( d+ Ktvb now,tvbnow,bttvbis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb8 j+ m0 @* C( P" S
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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 blighttvb now,tvbnow,bttvb, h6 P8 K\" z- r$ A
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇; E& U7 H" o3 M+ M6 e) l

$ S7 H' Y) a/ U2 |& T6 Dos.tvboxnow.comSeptoria leaf spot infections will also help prevent late blight infections.
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