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 www3.tvboxnow.com- p1 D: o' ^/ L4 u
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.www3.tvboxnow.com; o, R* h \7 @
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How to identify Early Blight5 K" l [* M+ K, ^. | X
) U( K0 ?5 s, _& ~, qtvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ( l' |5 u x4 [* x3 _+ W
& X% ~/ r* V y% ~/ Qnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 3 F5 d2 A1 l( Q3 v& L2 j, lwww3.tvboxnow.comtvb now,tvbnow,bttvb( _4 B6 |3 F5 j( k
in color and form concentric rings, or a ) i% j, C8 P! I3 k% mwww3.tvboxnow.com % O0 ]) H: Q- Ywww3.tvboxnow.combullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇" G- r" I% o4 |: {3 r
( i1 I. \2 E! u) O" 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。leaves may fall off. Extensive loss . X; ~9 w7 z# _, h- ?* m1 d
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。/ S1 X! q2 A: z/ k) d8 G2 G0 H8 @
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. , }* T' u( v7 W. i& ~. h " d1 @0 k1 d+ L* b3 G* g, Z 0 q: u4 u" k" W7 Z& u公仔箱論壇How to identify Septoria Leaf Spot公仔箱論壇+ S; v- Q2 H2 n' ~' L5 P
1 g4 ?7 w: ?" W7 V3 H9 _2 c- Ctvb now,tvbnow,bttvbSymptoms of Septoria leaf spot also start 公仔箱論壇+ ] @0 |8 |- X. X4 F! M2 x
' F* e1 y& `* h0 b9 F- Cwww3.tvboxnow.comon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change www3.tvboxnow.com. {: Y8 S& J- ]' v% H8 _
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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. & }7 B/ |) x r' ATVBNOW 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。公仔箱論壇! P* e5 O) P6 P. l4 x
Small dark spots, the fruiting bodies of the fungus , O* S0 k- t( @& R5 P\" i$ ^0 l, A1 a, Y' y& A( _) f , 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! O% N9 V e) ]5 F' ]6 H
) ^# F, A5 Q# e) I" twww3.tvboxnow.comand dead. Stems can also become infected but ) ~1 x8 X' T. V: A
) K5 Y: j2 f2 Y- r0 U\" Y2 Etvb now,tvbnow,bttvblong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes." ]+ c$ l8 H' B: }9 F. b
tvb now,tvbnow,bttvb5 {4 t0 Y( J/ s1 F8 o% T& Z Weed your garden. Some weeds, ! n( x' h; I# Q G' 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。公仔箱論壇+ G( ~. b' ^4 {) e3 t
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. ) _4 D; X5 g" ]3 O+ c# i & B, Q( ^! E0 b. q; hwww3.tvboxnow.comRotate crop locations. Don’t tvb now,tvbnow,bttvb* N3 y K$ r0 J. w( K& D
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plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas tvb now,tvbnow,bttvb& |6 L8 D6 I. A; U& h. j
1 V+ T8 I2 J$ I ]/ M' Z5 y) I( B! \公仔箱論壇where tomatoes were grown. ) J5 w+ S; p( j+ T9 M( e$ Y公仔箱論壇www3.tvboxnow.com) f5 N& i9 y( H4 i% F3 T
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. . T" G; \, J$ p- g V公仔箱論壇Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb: u4 k" w2 L# X* a
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fungus from the soil to your , O0 I# Z2 |3 `3 z, awww3.tvboxnow.com N- X" y; W3 R
plants.公仔箱論壇# d; n3 n4 q2 ?7 F3 Z
* [! j, C6 D) u3 Q: t1 R) P/ fwww3.tvboxnow.comStake or cage plants to keep them 6 P8 J; `2 G; W% V e
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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 7 ]4 @; b9 L% b) e, [! h& S! Xwww3.tvboxnow.com- w' N7 T |7 A# E5 S
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& I1 Q/ Q( D1 y i
( m/ _4 \* u* Z2 tspace above the soil without any leaves. Do not use 4 ?: |; |& R% f7 V3 \, y9 W公仔箱論壇 / W5 |) I\" c. s# P! ktvb now,tvbnow,bttvboverhead watering. ; H0 s. l+ F3 [. K K$ ]6 E8 K. ^
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. www3.tvboxnow.com! p0 T4 A- ~8 V( Q3 [
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 % h7 R9 G/ f( y- E/ V' l+ f
+ H4 X; S0 `! m+ c公仔箱論壇fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are $ ?/ `1 |/ X7 O# J% a8 B" p5 \
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wet. Keep your plants happy and healthy. Weak and stressed 8 B9 _. v6 X6 I; [/ z \" Z& |0 a- f! _) v\" d2 C2 m公仔箱論壇plants are more susceptible to disease.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" ~3 q& c4 @& t5 F3 Q+ h
; b- N4 i6 k7 Y, NRemove and destroy or throw away diseased leaves, both off the ( K\" |$ h y3 x
9 E9 G, u3 s7 r+ d3 e8 q0 J& \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。to remove diseased leaves should be disinfected before being used on a different plant. 2 ]2 o. L1 @+ M! _4 U" O3 w: I: J( m4 Z" w
Spray plants to prevent and control the 公仔箱論壇6 J0 B: \( B# ], x
% V0 v/ p. ~+ [\" ?2 b; P0 f! uTVBNOW 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。spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 9 o( @* Y9 t" m3 ?5 E3 O7 T/ v公仔箱論壇. @& @/ G) j0 u9 C! m/ [# ? k
GreenCure. " j! A" A4 U$ @* j% t) d. x. Q ; T* p* v/ U% E$ D. b U3 t2 R/ v! q' P
Late Blight on Tomato Plants 3 Z% `- o. n( 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。 m! N. d X4 W
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato ; h2 k" H; G* C. v- |公仔箱論壇* j7 s. E2 x/ z0 Y plants in a garden. Once a tomato plant 3 q" ~6 }% G6 h' x8 c, b3 dwww3.tvboxnow.com/ I% Z3 v7 H2 q. X" G8 n i
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, ; P C9 F: p; w+ |' r! i+ J: e8 d" Ztvb now,tvbnow,bttvb 0 {0 w" t" p9 H# ?, gwater-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 blight 3 Z8 O- W' B: G: h3 f/ a公仔箱論壇! C& H' \2 }\" t$ g1 E) z can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 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。; m# ]1 X, [8 ~# T) C' ~
- Q# Q8 X/ ~. n) |( B: F7 C: l& ltvb now,tvbnow,bttvbSeptoria leaf spot infections will also help prevent late blight infections.
