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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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$ P% a  _1 O( W# J& a# \6 ycan 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公仔箱論壇6 {- u- W9 ]! |

1 L& q" p2 \; I, Q) @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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, S5 o7 }. S7 Bnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
6 }* G5 `7 M! r- X- _; f( [) mTVBNOW 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。
' Q$ X. f2 |3 A# yTVBNOW 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。in color and form concentric rings, or a 公仔箱論壇\" `+ |- F) Y/ }- G
公仔箱論壇( O- D3 E) _. ?5 g' _
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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) z$ E. ?) @# Yof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇8 C0 C* j- Q1 U8 t) a8 y! g9 y3 A7 l& w

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/ s2 Y" ]. Y; O- m公仔箱論壇How to identify Septoria Leaf Spot5 T" B: E7 n6 u* @' p

4 c6 T4 ~" D' ?) \$ K7 E, M4 Q; ySymptoms of Septoria leaf spot also start 公仔箱論壇) x6 q# V1 s9 T" y' y) |

$ |+ g& t9 e) J. p/ i7 R. Xon 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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: J5 s' [0 b6 u0 G' yshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 公仔箱論壇" m: z6 J2 \6 {* a
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Small dark spots, the fruiting bodies of the fungus公仔箱論壇. z* ^5 _* I' Q( I
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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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' |# F! d4 Y$ S/ fand dead. Stems can also become infected but tvb now,tvbnow,bttvb& @* V% q7 t4 H& n! }5 y  R

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is rare.www1.tvboxnow.com, Q7 b. ~+ m/ A! R, [

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9 B2 U" N( z$ ]: Y9 t8 y* e4 [* ~' BHow to Prevent and Control Early Blight and 4 ]3 |; [  w' y
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Septoria Leaf Spot

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long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.* I  L) a! M* L, l, J! l

( X1 q' n3 H9 v9 o) G/ GWeed your garden. Some weeds, ; B4 k! R0 H9 {0 h
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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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Rotate crop locations. Don’t 7 c5 d' [2 g& p$ f8 B  A
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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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& g/ B; k% y" b2 o6 X" S7 Qtvb now,tvbnow,bttvbwhere tomatoes were grown.公仔箱論壇2 K6 j. Q# I' \  t) p  ]; |( x

1 V3 g1 M6 [! L2 |& u( B# rGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
* t( b7 O: {+ QCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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  {% C- j8 q* V公仔箱論壇plants.$ T8 G& e0 U$ H% C0 P/ o8 |

6 S7 T! X4 J' eStake or cage plants to keep them
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) ?/ c9 {6 D' ~! [/ r. }' q7 j" Voff 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 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。: f) Q8 X& b, E% z

) h( `, s; k: r, qoverhead watering
.
' p! n5 z9 ?- Z# i9 d8 f8 o+ fwww1.tvboxnow.comAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
) x$ q, f- ^& e  `6 v5 i  P0 u3 MConsider 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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3 {* X$ u: q$ p. efungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are tvb now,tvbnow,bttvb0 P$ ^4 {/ T3 p: B/ a4 \* E

  J$ o# X6 t0 u' P5 i, _4 dwet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇$ w% Q+ [* T9 r* C' ^: I* e3 v/ x

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are more susceptible to disease.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 B5 c: e% V3 F9 q* n

& _, F! O% x* n' g  g6 q0 Q  aRemove and destroy or throw away diseased leaves, both off 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。1 x+ ^1 |$ W3 {; G) m' i
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early 公仔箱論壇# X) Z. R; e6 X
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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
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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 www1.tvboxnow.com1 `) f0 r/ g) d6 y3 e1 l

* |1 R( l/ \% t) `$ fspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try 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。! T# A$ v  d# J6 q& q/ Y2 s3 Z0 @
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GreenCure.
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3 P2 S6 r2 p( ~$ b+ lwww1.tvboxnow.comLate Blight on Tomato Plantswww1.tvboxnow.com* A" M( j0 z# E

: `" O9 x( H, P% c8 p公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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1 U" C; h  P) a7 V% U4 jtvb now,tvbnow,bttvbplants in a garden. Once a tomato plant
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, c- l1 Y( y* _2 H8 qis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
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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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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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& ^7 m$ M+ q8 R7 s# i. j* n1 |2 G公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
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