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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 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。0 N$ P& @$ ~( x# Q& r, [3 H
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can 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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( B, D4 j  ~0 F6 ~4 s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 8 s8 n) o6 |/ J2 z

9 X7 f! Q6 i! G# U# v5.39.217.77:8898newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown tvb now,tvbnow,bttvb( `, i' n5 |4 S$ C" s" V) |

  U; v% C+ a; a3 Vin color and form concentric rings, or a 5.39.217.77:88985 h6 y9 K+ H- @( q8 o% m% F

$ A. t1 M/ ]+ g& w  `2 R' Pbullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow,
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% {" ~8 a; c6 t5 sTVBNOW 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
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$ u: }( I6 _- c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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! x9 \3 E' N2 \: q: ]4 u5.39.217.77:8898How to identify Septoria Leaf Spottvb now,tvbnow,bttvb5 j3 {* f0 U: Y# z* |

2 _* |2 p, `$ F- ~. ?' L' F5.39.217.77:8898Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb- F8 z% G5 S2 {( \; G8 h

2 s, c- A8 k" r* M* q% [7 _6 f+ e; h5.39.217.77:8898on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5.39.217.77:8898& V* s" B" L# c  H! m5 v+ [

, s2 s3 ~7 _7 D" R5 mtvb now,tvbnow,bttvbshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. tvb now,tvbnow,bttvb  Q8 i3 T# [( k8 I" h
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Small dark spots, the fruiting bodies of the fungus5.39.217.77:8898$ M; e/ R% m: J) M6 B/ y
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 公仔箱論壇3 S- A3 q8 ?0 r' x0 K( V3 L
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and dead. Stems can also become infected but
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infection of fruit
is rare.tvb now,tvbnow,bttvb% m+ X0 Z8 J1 X/ `4 c6 S5 [
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How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb$ L/ W9 K' c9 M5 H

1 r  H* V6 o( \  F. R% A7 x0 TSeptoria Leaf Spot

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8 e# |3 V# H; A4 _! o* [. E6 L# 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。Follow the 12 easy steps below to enjoy a 8 e- c0 O) ~: @, ?( L8 P/ Q) 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。$ c1 P0 }! F8 M3 @; q1 L/ V
long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds, 5.39.217.77:8898! C# Q0 v7 I  ^# J1 p! J8 A
tvb now,tvbnow,bttvb) K8 I. a; z9 h0 Y
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.5.39.217.77:88989 x5 P5 T2 H  B$ Z0 e1 ^* t) C# x
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。" G' S+ Q- X0 Q
Rotate crop locations. Don’t ; Y8 r6 C" a8 }0 z# g- h

1 y, [" H' o( W* d# O- m& [公仔箱論壇plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 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。- ^4 O4 _& }; x) v- j3 c* X& y( C
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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.
( W( a7 J( K9 ~6 r- ]2 c- d* b* mCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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$ F+ e) a  ?5 T# [: u- _fungus from the soil to your tvb now,tvbnow,bttvb) H0 [* e  K% n" H6 x" h3 t$ e' H! v. Y. Q
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plants.5.39.217.77:88984 p# n: \! d  }6 V; M* f
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Stake 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 4 r7 q3 W# P2 [/ T  X3 e& [% I
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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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overhead watering
.
9 V- B# Q9 c9 s- [6 AAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
* ^2 d' U- A( q; ^: u4 V8 r& |tvb now,tvbnow,bttvbConsider 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
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6 k$ k% {$ S, u. k, I# d8 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。wet. Keep your plants happy and healthy. Weak and stressed
  {2 e$ R, P' 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。
% w8 X7 t, c  Z0 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。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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plant and any that have fallen onto the ground. This may help stop the spread if caught early
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* H3 [9 e* r' ]8 b2 V% z+ Stvb now,tvbnow,bttvbenough. 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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$ D1 W. w: `' E. B1 c( I; e; u$ z* ^# 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。to remove diseased leaves should be disinfected before being used on a different plant.- n! m8 M: ?& r  U6 k9 c4 Y. n

- w3 R8 N- G# o6 j公仔箱論壇Spray plants to prevent and control the # L* H9 c* W% m& W) q
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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.公仔箱論壇) [0 F* c  m5 T# W) O; C
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Late Blight on Tomato Plants
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. M+ S" @$ h: g; T) Z$ S5.39.217.77:8898Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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  S1 Y1 w( t+ b# t! t" n3 ^0 J5.39.217.77:8898plants 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,   a- x! o. X! C- A

) \3 q2 [8 }5 t  {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# x) T' _: w* Q. l- \
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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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( X! X  W! H% e1 _. s1 r公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
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