Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but 公仔箱論壇! \" o. x1 D7 e* S G
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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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' d/ L) Q/ }+ p' Q9 n# u8 DSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to tvb now,tvbnow,bttvb+ w6 G% m e9 R4 i6 m5 _1 G
6 ^4 ^: |- ^6 C& Ynewer 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 & W6 p* v% W+ T9 i. E( s
0 h7 `5 d8 f, \4 |: i3 ptvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
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; y' ?( X u# @7 W6 I. g+ r+ Mleaves may fall off. Extensive loss $ y) H' Q% C2 _ p& y/ t
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.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# k- q7 A+ y: k
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1 M! c* K' K( |- W2 i5.39.217.77:8898How to identify Septoria Leaf Spot7 P" S; i4 X1 s% W" U
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Symptoms of Septoria leaf spot also start # ^/ w( J* f- @9 a9 Z
* L0 J7 u4 D: @' K公仔箱論壇on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change tvb now,tvbnow,bttvb1 g2 [. M+ n5 D X: w8 A: }/ ?
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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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/ d0 v: B6 s( Q9 @4 U! n5.39.217.77:8898Small 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 # R2 j8 f4 `- v- `3 M3 t
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and dead. Stems can also become infected but
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% k+ w7 f+ a4 q6 P9 o5.39.217.77:8898infection of fruit is rare.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。+ q ^9 H: R9 a" G+ G
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8 j$ d8 o. a3 u3 }9 Y0 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。How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb6 _9 j$ r( J) B# [6 N5 T! @
4 f0 ~, E& r( OSeptoria Leaf Spottvb now,tvbnow,bttvb& Q" Q. ]$ S; |. e) ]8 f
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Follow the 12 easy steps below to enjoy a
3 c$ s: q5 \0 Dtvb now,tvbnow,bttvbTVBNOW 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 m7 T* b: G0 I
long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇" _- ]* T; d, U3 o2 M
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Weed your garden. Some weeds, + m& w5 q# E4 W, _2 X7 u
- g! O7 X; P: w% }, N5 H0 a: ttvb 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
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" a6 Z1 H! w# U \4 z6 _plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
' B3 k' l) b- i% m6 R& BTVBNOW 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。tvb now,tvbnow,bttvb; ~0 c' j5 |% W T+ A4 f6 t3 b p) J7 _/ I
where tomatoes were grown.tvb now,tvbnow,bttvb* P8 s4 m8 _, ~3 }$ ?- V
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.1 a2 f6 ^" W9 p6 b$ u9 u& q/ @
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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3 j. B0 m4 t0 J9 C, R5 l" v) qfungus from the soil to your
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plants.
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, }; O' z1 ~4 F& R! y& \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 + H/ @4 _) X9 \9 G
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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 公仔箱論壇9 O% Y+ {0 x! f! o( Y& K4 S- O8 D
, @7 A. ] Y7 k/ v3 ~4 |space above the soil without any leaves. Do not use 5.39.217.77:88987 v- L/ {. ^0 r) h
, R ?2 U4 l) N1 koverhead watering. tvb now,tvbnow,bttvb1 T. T% m; G: \( d8 s% h( p3 O
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
; K/ ]: d2 b$ n ]3 P; K- U- IConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow 5.39.217.77:8898( n0 _1 J$ S2 D' \
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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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9 p* j, I( {7 F- T ZTVBNOW 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 & @. r( G1 {. \8 N
! p) S. [' v% h& |+ ]0 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。plants are more susceptible to disease.公仔箱論壇& s5 w/ ?( P- d3 R
0 N* L0 O1 Y/ V G$ F$ g: c4 O公仔箱論壇Remove and destroy or throw away diseased leaves, both off the . R3 O( g8 c( m8 v
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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5 x: A& j6 Q2 u1 O7 v. _8 M公仔箱論壇enough. If a plant is heavily infected
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! l) L! @ u5 l. _, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used . n7 s$ E0 }& E# e
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to remove diseased leaves should be disinfected before being used on a different plant.
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; p- E: q% y+ b7 a& ^4 _3 R/ PSpray 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 公仔箱論壇: r" O& f& {. Z' m7 q" f: }
$ f: z) b) J- 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。GreenCure.5.39.217.77:8898. w: Q& ~4 {" ?- u% k; Q4 H5 U% D
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Late Blight on Tomato Plants6 |/ @) x9 j$ E3 |
+ H2 [ A/ h @# c" c2 W. Ltvb now,tvbnow,bttvbLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 公仔箱論壇% {# {& x' T7 Y5 W
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plants in a garden. Once a tomato plant * }2 o) G$ O6 A+ h/ q |4 y: W
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 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。) e0 I& l6 _" z. @) w
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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 blight9 _* a1 P2 T0 N9 o' F
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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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; e, Q9 ]: B- K+ z# pSeptoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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