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標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

作者: 6t6t    時間: 2019-4-13 05:03 PM     標題: 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 6 a: k$ j/ H' J2 j* `* a
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.5.39.217.77:8898: S3 b. T! e9 y4 ^0 R! E

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6 }% J1 ~, }* {9 I- m2 Y- Y7 xHow to identify Early Blight
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9 }( B. r9 c; A. g8 s; t% atvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ! j" A6 `, t) G8 e7 ]0 P- |
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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 ! R9 v3 ]% ?& s+ h! U2 \

& M: u( u0 m: s! d2 nTVBNOW 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 7 d) z4 S1 q4 x+ k

5 N, z8 }1 }2 _; j/ Y% @, ^bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇$ f# j' F; t3 S: J6 W$ d0 ~1 X
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leaves may fall off. Extensive loss
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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$ D1 A: d3 f) d5 m- m% r5.39.217.77:8898How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start 5.39.217.77:88985 R3 y4 t( G+ U# E

0 b& V4 H6 i  P& @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。  o5 {' n- J7 ]- f- {7 V( E2 ?# S
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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 fungusTVBNOW 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 k6 _5 y3 J- g  D5 }8 J$ N! p  g

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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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9 _0 C5 Q# [1 ^$ E5 ]+ ]0 H7 band dead. Stems can also become infected but
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infection of fruit
is rare.
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9 ~( Z+ _5 Y: ]6 s8 W- J4 _- |How to Prevent and Control Early Blight and
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, W) J; u  j& OTVBNOW 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。Septoria Leaf Spot
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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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- u/ Q2 u* l2 `5.39.217.77:8898Weed your garden. Some weeds, 5.39.217.77:88989 `, q8 y8 ^: R( Q

0 z; ]+ Q$ c6 K0 f# Y4 Q6 D' Etvb now,tvbnow,bttvblike 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 5.39.217.77:88981 s8 X/ s$ R4 [1 ?3 A

  ]; ~: |) d/ J) u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。! X6 q. v9 A* p# E
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where tomatoes were grown.% `7 X2 ]7 K3 B8 P
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
: f& ?+ [2 c" I& Q' V) \. uCover 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 ) A+ }/ o) h7 v% R7 s. r# @

- v- U6 n; f1 I3 c9 ^+ o& X0 Gplants.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' n3 h1 e6 Y; F
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 ]- }8 U! E4 _. h# i; X
Stake or cage plants to keep them 公仔箱論壇# u; i8 `: Q' L9 G' r$ e. B5 m1 v
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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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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。) u% U7 U4 m2 P, E* r; `, B- c
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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。- o\" j, i$ G0 _6 V6 k& V) t  @
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overhead watering
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Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 公仔箱論壇& p% V! u" _/ @) {4 m5 I7 l7 V
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
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3 U, v2 y. S$ W) |; b9 N/ e5.39.217.77:8898wet. Keep your plants happy and healthy. Weak and stressed
6 `. Z; M  R& ^\" S: F! z0 G\" p公仔箱論壇
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are more susceptible to disease.$ Q- G/ F1 r, F7 P" C% s- ^4 l% E
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Remove and destroy or throw away diseased leaves, both off the
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb9 T& b, g) W) A% Z
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enough. If a plant is heavily infected5.39.217.77:8898- C9 z3 a2 t4 {% `, J4 U  }! O
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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.+ x# E" a+ z: a/ d. C* N6 t. V
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Spray plants to prevent and control the
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; c8 @% f6 c* B: i1 }tvb now,tvbnow,bttvbspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
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GreenCure.tvb now,tvbnow,bttvb0 F. ^* n  I+ {8 n
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Late Blight on Tomato PlantsTVBNOW 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。5 k6 o* ^: O7 Y5 x& i

. ]. i5 Y8 y' Q: D% g  DTVBNOW 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。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,
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) R& n! L0 v; D8 Q, w) W- f6 P5.39.217.77:8898water-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 blightTVBNOW 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。\" C, O# g& s7 Q- g$ z8 h
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and tvb now,tvbnow,bttvb. E1 ?9 _1 Y1 L# r6 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。( |% X9 H$ d. C5 s0 L& l' w
Septoria leaf spot infections will also help prevent late blight infections.




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