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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
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1 L7 ]# `% c* N公仔箱論壇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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/ N( ?  s) Y/ m/ p8 ~5 f1 x  CSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 9 H; S) y3 a. Y% j1 K

; B2 E. b2 I( a4 A' Wnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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in color and form concentric rings, or a
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bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, 5.39.217.77:8898& W! D. q" v/ T3 n, q

* T( L1 U# }$ ~/ ?$ J1 D. P9 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。leaves may fall off. Extensive loss
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9 y  [& w/ R, _5.39.217.77:8898of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇5 v. Y: k' @- `+ Q" g& B
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 y' n, U' ^3 I4 E; a3 h
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How to identify Septoria Leaf Spot
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  m: r" g% R: Q" ^5.39.217.77:8898Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb' s. Z0 f$ p" m5 U0 ?2 @! n- e" P! I' Q

: P6 h0 v2 f; M" r& }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。on 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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( t" {+ t) c% `! s7 X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. 7 a6 \6 V5 ~9 g) C  k- ~7 f; c
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Small dark spots, the fruiting bodies of the fungus
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 3 E4 |7 u4 R/ c' o3 h8 h- X8 l
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and dead. Stems can also become infected but 公仔箱論壇1 m6 @1 Q- j1 X- @\" v2 D: n
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infection of fruit
is rare.
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How to Prevent and Control Early Blight and
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Septoria Leaf Spot

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8 D9 f2 d7 |) j8 c& 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。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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Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇  Z& y: ~3 O1 }# f
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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。& y! D3 c  B2 ]* {
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。' U1 Q$ H" d7 N9 n, C  g( j
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 公仔箱論壇3 q& j+ q3 _! l- N; P' q
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where tomatoes were grown.
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3 E$ s# P  K2 ]  q, W) S6 NGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.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 q, x) p; |# [9 k1 C0 Z
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb( e6 F  F  O, Y

& P! I* h0 R# o8 u9 q8 w公仔箱論壇fungus from the soil to your 5.39.217.77:88982 N. l; q; @9 j9 a

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# L4 z$ J' I/ W9 ]0 \Stake or cage plants to keep them
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1 f0 i  C5 m' C+ jtvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and tvb now,tvbnow,bttvb5 r% T/ b4 o: }( C
公仔箱論壇& A8 ^0 g- |  Z# m2 x
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of " o0 X) i5 C, l1 ^
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space above the soil without any leaves. Do not use 7 I- \0 H0 z. U4 ^3 v* i4 B
tvb now,tvbnow,bttvb' Q' P1 C5 K; T
overhead watering
.
& v6 F4 c' Q& m* r& S& YAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 9 J. y( T- N" x) c( B
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 0 c1 i7 D/ X( r% S9 Q! P/ T

) [8 T# ~6 k- m5.39.217.77:8898fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 5.39.217.77:8898& y/ g3 j2 `* J
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wet. Keep your plants happy and healthy. Weak and stressed 5.39.217.77:88983 m3 @1 q( W% W9 H1 F
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plants
are more susceptible to disease.tvb now,tvbnow,bttvb+ e& o! f5 M8 c6 o

. D+ C( Q& H7 M) b6 wRemove and destroy or throw away diseased leaves, both off the 公仔箱論壇3 @# P. i' _+ y3 X, g3 n
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early 5.39.217.77:8898) D* k, d3 C  [5 m. S

7 ?5 ?* v; |: r- @& b6 o公仔箱論壇enough. If a plant is heavily infectedTVBNOW 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 X& [7 L  [' V7 v5 l4 ]2 B+ [

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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 5.39.217.77:8898; B& d$ k  I# B4 r

' a! o) Z( ?. f( W' f- l+ j. G9 A公仔箱論壇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 / u' w1 J3 E, L4 C) ]0 l8 s8 n% {1 O
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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6 G( Q: `3 W5 q- ]& K0 F
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9 `3 K) B- z3 P! r& rLate Blight on Tomato Plants
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" h( I# A3 z# q% y) P5.39.217.77:8898Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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3 T( u2 l/ l: W; O5.39.217.77:8898plants 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,
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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 blight5.39.217.77:8898: [0 k) p% N\" n1 l+ U, |% A\" G5 s5 r
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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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& _$ c- E; [( e' QSeptoria leaf spot infections will also help prevent late blight infections.




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