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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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- H0 \% _1 e4 x' K1 U: `can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.www1.tvboxnow.com0 A; |4 c7 }- x' N7 x

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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 tvb now,tvbnow,bttvb& ]% P, b$ J) @' n, |" L

( R0 L" T0 b1 twww1.tvboxnow.comnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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& U# Q3 E$ [4 t2 d$ g. H) \- Q. xwww1.tvboxnow.comin color and form concentric rings, or a 公仔箱論壇4 d0 l0 E$ R\" \; Q
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bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, ( A1 V& I! w: G( l# p$ z/ D3 z

- T8 C8 H& o: fTVBNOW 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 $ O. ~* m5 J( o" [0 p4 ~3 R

4 b! E7 ^; h6 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。of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.: g4 e2 m' Y/ a! O

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% w- ^$ F# ]2 owww1.tvboxnow.comHow to identify Septoria Leaf Spot4 G5 [  I6 o' g3 T$ r6 a; [

4 U  T2 E6 m$ b) N" m# RSymptoms of Septoria leaf spot also start www1.tvboxnow.com8 [9 D: g2 B2 U( u- v6 K2 {  q

% X% ~" `. B  j' ]% L, Kon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change
+ D1 b0 X3 j; ~& {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。
: |3 X6 S0 \/ PTVBNOW 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。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 fungus2 `  f- U$ v1 a7 k

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb& ?6 E4 U/ p" W! y+ E& z
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and dead. Stems can also become infected but
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infection of fruit
is rare.www1.tvboxnow.com& ]0 O; F) ^1 R2 x+ Y' r
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) ]# f# \  W% E" c7 R% \) gtvb now,tvbnow,bttvbHow to Prevent and Control Early Blight and
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Septoria Leaf Spot
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 I- t& a) u& a$ X8 t1 I

: d7 h$ C5 D. g! J; T9 Z# Ztvb now,tvbnow,bttvbFollow the 12 easy steps below to enjoy a
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) h/ ^  _! c5 R2 V; {\" L\" T* 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。long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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' s( c& Q7 O- B' X: x% S7 [* J' dwww1.tvboxnow.comWeed your garden. Some weeds, 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。( l& T( ?) P& l" O
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  _/ \* e) |/ ]: S1 {
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 ( f- l* {/ L+ X' u
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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 www1.tvboxnow.com$ W4 K" R0 F  d" V6 s1 B

1 p+ ~. g4 K% X# D/ `. K; XTVBNOW 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。where tomatoes were grown.
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- o  F4 L4 g, G  q" e4 itvb now,tvbnow,bttvbGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
3 I! s7 E. ^: d9 A, ^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。Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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) G; H( H( V, G8 C( L8 ^7 ?fungus from the soil to your 公仔箱論壇# H% r$ ~5 q3 M' c5 V$ b5 E
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plants.
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Stake or cage plants to keep them www1.tvboxnow.com  g5 Z! e) n! Z0 _
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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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/ D6 J) S8 X# n2 Q公仔箱論壇cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of $ @! U1 P! ], q  V
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space above the soil without any leaves. Do not use
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overhead watering
.
# s+ t8 P$ Y. e8 O4 rtvb 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. 6 j! s, r# {% U  x* x
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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fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are ( h* e9 a1 R8 J9 |% a3 f! }) Z. F
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wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb- c# V2 x9 [3 n/ d

& P1 ~' t: T4 G9 y- |; 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。plants
are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the 5 s# k1 l7 E8 D
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early
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# i. Q# r' x2 A5 p# ]. n/ ]enough. If a plant is heavily infectedwww1.tvboxnow.com( A3 b( a. @$ X

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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 www1.tvboxnow.com( W" _$ W( y& X7 j4 O5 B5 L, N. W
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to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇/ J# X8 S) k4 T. B: ^; g8 V1 }

% G) T+ O7 l' H$ 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。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
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GreenCure.
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2 e5 ?) o+ k3 v  b3 j. D6 KLate Blight on Tomato Plantswww1.tvboxnow.com0 b5 U/ u  K8 }8 g7 W
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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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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, ( G" f+ Y8 e. s$ e4 x7 n  e9 ]4 L

1 W% h& e' ?+ Zwater-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 blightwww1.tvboxnow.com\" ^% m! M\" ?& j# L4 ]

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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.
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