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 ' I. W2 L( L+ J; I! j" u) I8 |tvb now,tvbnow,bttvb, b5 R5 }5 Z( z* r8 C
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb# _2 S; l! B8 ]/ |0 ?
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How to identify Early Blight ) s5 V2 }3 `- f公仔箱論壇3 x8 t& {2 E2 Z
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 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。5 s, r4 b7 o7 a2 _2 k
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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 tvb now,tvbnow,bttvb' `5 ?, Z, H' f6 R
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in color and form concentric rings, or 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。; C A: c3 f n8 G8 y7 l
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb6 n- b1 Z z" H! h" |7 U
8 f3 Q8 T# d% K3 A3 h leaves may fall off. Extensive loss ! u3 l( j5 @- F" D7 H; G0 |
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. ! I# R/ Z1 R& q& C) T* ?5.39.217.77:8898 : @& S* o7 C# R' r3 T0 u ' R* i: |* f: Z+ R9 u2 l0 }8 g) ]公仔箱論壇How to identify Septoria Leaf Spottvb now,tvbnow,bttvb% T; r- I1 V5 p6 w# y' U. J
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Symptoms of Septoria leaf spot also start % ?+ s" w ^3 I2 v0 O& _ & ^2 r1 n* R6 B+ R- J) O0 C' ]on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change * M" `1 a3 j k! 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. ' r7 A. n) [0 M( h' N E
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Small dark spots, the fruiting bodies of the fungus公仔箱論壇! ~% F4 i1 P: O$ B8 n' q- X
公仔箱論壇$ i: h# F# p4 z2 ^% V' a , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 5.39.217.77:8898) \) Z' L6 H% f3 ~7 k0 n. |
& b! H# E! _1 P& k公仔箱論壇Weed your garden. Some weeds, 5.39.217.77:8898! k1 |& C( t* I+ A4 ~! V
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.5.39.217.77:8898* i0 ]9 u9 v/ S. l: c8 U
. S, U" \3 ~/ r Rotate crop locations. Don’t & }9 ~# p. x, Y- ^' B
/ E. g; Z/ U* ] Q6 l! Lplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas ( S. {" j9 h0 ~" Z, ~6 L8 n
' [" b% G. N5 J Y" b0 L1 g) Vwhere tomatoes were grown.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。: v+ r7 d+ q, T) |0 `1 T
. V1 i! `& d; v1 M% @公仔箱論壇Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5 j. u$ I* I& `% e' g1 S- E
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 5.39.217.77:8898: F* `# \+ T+ b6 y& y- L) G
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fungus from the soil to your tvb now,tvbnow,bttvb6 Y+ [0 u" t9 w! l; ~" F
3 {. M9 `7 f- B5 K M2 X3 F8 aplants. / Z6 j9 h2 v- a1 {- C6 E- G* ~) `7 S9 \
Stake or cage plants to keep them 1 h" x; i% C5 q- ]- c5 i' w+ L5.39.217.77:8898 2 c' L! o$ p+ u/ I3 o5.39.217.77:8898off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 1 l; L, B# Q/ V3 ~8 k3 j公仔箱論壇 . D# d$ G( a3 G, a! F0 y. ccages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 5.39.217.77:8898- v, P5 J! I, j* s$ c
; W! N& m3 K5 |/ O* W X$ @space above the soil without any leaves. Do not use + h- X4 E7 [# `; `6 i5.39.217.77:8898/ B8 \6 m, [6 p% Y\" X' c
overhead watering. , z f6 I' o! E0 F7 LTVBNOW 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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. , g7 s; a5 v+ |/ ?) k% ]9 bConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow ' b1 c) r0 k. I5 `& C# M2 Q, }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。 ! b/ B3 c) |9 x. u8 k( ^5.39.217.77:8898fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 8 `" l0 ?$ k$ B/ t8 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。 2 U& `7 @7 W( y5.39.217.77:8898wet. Keep your plants happy and healthy. Weak and stressed \" _1 U* r) a( B\" }8 D2 ttvb now,tvbnow,bttvb $ z0 C: ]& w8 J, x1 e公仔箱論壇plants are more susceptible to disease. ' ^+ |+ O+ d \6 t/ 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。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。- e1 W2 e$ u1 [3 c
Remove and destroy or throw away diseased leaves, both off the , {6 C' W% y% c6 L0 @9 x: O# g- @5.39.217.77:8898 ; e- h- V3 }8 v* o5.39.217.77:8898plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 3 d" d0 J. C) \2 A5.39.217.77:8898TVBNOW 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。. L- u% }- G% ]# N
enough. If a plant is heavily infected 4 l5 m( }1 y# t- }公仔箱論壇 5 D! ^0 N2 @2 Z$ b: n\" q, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used ( I, e; @% A7 Y+ J公仔箱論壇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 w! {3 z; x' {* m$ a
to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇1 c& r% ~; Y: u0 d# i2 x
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Spray plants to prevent and control the 0 ~2 @, J( _; u0 N# ? T2 p7 t/ A! ]( P% ~spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try + [; Z0 g( a {% S- x! t公仔箱論壇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 ^) q9 w5 {+ E8 r! \' S
GreenCure. ! j9 k6 n( n5 ^# p$ PTVBNOW 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' F. I- ]. q) B( Z- R# ITVBNOW 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% K2 m$ l, w8 s
Late Blight on Tomato Plants " [9 h7 n4 `; x( g* mtvb now,tvbnow,bttvb5.39.217.77:88980 r8 e. A/ d% [: f* G, i
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 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。) O4 x1 F: K: o
- I& K& J c* _# V+ @公仔箱論壇plants in a garden. Once a tomato plant 公仔箱論壇# b. S1 J4 K: u+ \: ^# g( S
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.77:8898( {7 k; L0 Y2 Y1 Y* t {; B4 b- U
1 Q6 X l1 ^4 C; u+ K& Y: k5.39.217.77:8898water-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 blight8 F) ]/ Q2 b5 @ C, d6 R
! {% Y9 w9 e% N, T0 H1 R% |6 R1 ? can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 7 N- y, t p" I# l2 H( F3 ?5.39.217.77:88985.39.217.77:8898. y3 c) u# x: k! x$ s
Septoria leaf spot infections will also help prevent late blight infections.
