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 tvb now,tvbnow,bttvb4 t/ f( d8 r, X- o- J1 L- O
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. 3 _8 {$ E2 A8 i- L. l0 e5.39.217.77:8898公仔箱論壇0 ]5 y. k) V; a2 V0 d& d Q
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How to identify Early Blight : [' t" [* O5 j9 U! p& X s/ |. ] C5.39.217.77:8898& U: X. Y( a1 X
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to : d6 W+ o+ ^" |, _# i1 Etvb now,tvbnow,bttvb5.39.217.77:8898* [' y4 u' m( V- c
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 2 Q2 n! G0 b& ltvb now,tvbnow,bttvb / w7 r9 _4 ]2 ?4 stvb now,tvbnow,bttvbin 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。+ `3 h! J& N3 M$ O9 k, ]; I
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 8 L: g$ R* H$ N5.39.217.77:8898TVBNOW 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。' Z+ V: z+ e7 \1 H+ Z8 y9 ?: | leaves may fall off. Extensive loss 5.39.217.77:88988 a! V' g" }* J6 s$ k, n
/ I+ s* K$ D/ W* H7 G, U% I$ itvb now,tvbnow,bttvbof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.5.39.217.77:88984 c% h! e2 a1 _; x; p
, L7 W2 V# S6 F; i0 O( u, ]9 z9 rTVBNOW 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。$ D% n4 ?1 D" q* m: b$ b
How to identify Septoria Leaf Spot 7 i$ z) `2 Y2 u3 d5.39.217.77:8898 & n1 ~9 {' a1 z$ [5.39.217.77:8898Symptoms of Septoria leaf spot also start r7 r3 x. p1 M. T" Vtvb now,tvbnow,bttvb 4 X' G- F# H2 t% H: R$ vTVBNOW 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 5.39.217.77:8898) a. j5 K7 N" r
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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. 公仔箱論壇: i1 d7 C- v: w
5 n: v- f9 X( s' Uplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas : g6 Y; U' M7 w% Y6 P" f5 t$ k公仔箱論壇8 p2 i! n2 }2 Z0 {
where tomatoes were grown. ( m% ~. @# {; l+ v3 Q9 ]6 T- [5.39.217.77:8898 + \3 E/ F6 ?" H5 zGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. . A/ c- p2 H0 }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 ; Q4 y* R* \5 mTVBNOW 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。7 g5 X. t X6 O# e, u, v& c7 z
fungus from the soil to your ( \, P- t; b E+ b% f* X) W公仔箱論壇) Q4 u' m# k" m- H$ |
plants.tvb now,tvbnow,bttvb+ J8 w5 R. O3 z- T1 M2 k
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Stake or cage plants to keep them 公仔箱論壇: x7 `" N" V3 _4 @* L8 [
9 ]1 N9 u3 W6 _- N7 N公仔箱論壇off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 5 p5 E$ d: V* `& o : [7 E q+ y% 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。cages. 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# e. f& o* B& n; ~, g- w: c
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space above the soil without any leaves. Do not use & I0 J& F- a- etvb now,tvbnow,bttvb公仔箱論壇( M9 ]& B. m4 M+ J5 O; W3 m
overhead watering. 公仔箱論壇8 ?9 A7 e1 @- t: P2 g5 O
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. : C: I R( V) c! E6 }- wTVBNOW 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。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 # z& W" ^. T( C9 B+ l: e. g9 k3 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。 K" _0 t$ \9 u
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are tvb now,tvbnow,bttvb" }8 h# V2 A6 e' x8 D
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wet. Keep your plants happy and healthy. Weak and stressed $ A2 H0 `: U4 X B8 o( s8 P
! t p2 v# L+ S( y) k\" }9 J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。- P9 _% W/ ` O! e E! H( H# ^
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Remove and destroy or throw away diseased leaves, both off the / c1 V+ Y, o4 N ( P4 c/ j3 v# a* }公仔箱論壇plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 7 c8 x: `5 {! U+ x5.39.217.77:8898tvb now,tvbnow,bttvb3 d# F) X% M+ X% [
enough. If a plant is heavily infected 0 e8 C4 ~2 t7 ?( \9 Q! `tvb now,tvbnow,bttvb6 P, _2 U% \9 G/ ], Q' ]: B+ b, s0 s , the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used , A8 [, P+ w! y4 B% S8 b# htvb now,tvbnow,bttvb1 n- M6 c( s1 _# k" \+ l* c& i
to remove diseased leaves should be disinfected before being used on a different plant. 1 H* a( ] X* o6 E% ]; {' h6 d" j" b8 Q' y! k
Spray plants to prevent and control the 5 M, g\" L* j# j2 @5.39.217.77:88987 V' ~0 e5 N9 ?% @4 P
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try / e- K1 g( j# e4 W5 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。 3 S1 u5 r( {% A" W Y/ G& u5.39.217.77:8898GreenCure. 9 r9 N( a& [3 W& X2 J7 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。- P' s, R" S) R$ k8 t6 B" i
* D: u3 H: V; g2 S$ 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。Late Blight on Tomato Plants公仔箱論壇2 C# f. p! L% X6 n2 q* z
4 U( t* Q5 r f公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 公仔箱論壇9 f2 ^# M/ D1 P, @# W
) M) `$ h+ Q: b& k' V% ]plants in a garden. Once a tomato plant " q# b$ q: N. x7 D, z6 M( ?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 k8 h' Q+ V8 t
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 3 F* n1 X! b) b' v) L* t( n5 t: w1 E7 J" ~) ?- H+ V5 k
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 blighttvb now,tvbnow,bttvb! X! j2 ~. }( P6 h\" J8 @9 V
5.39.217.77:88986 t8 R' A# H [* r* N% I, D can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and - ^6 ^( z2 I7 {) s; m5.39.217.77:8898+ n. B |- M2 x7 ?: ^/ X
Septoria leaf spot infections will also help prevent late blight infections.
