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 3 `+ }8 |' \/ [ j" [" R$ O8 \
- V$ Q( }- b% { y6 B公仔箱論壇can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.& `* U0 N3 F: L9 y4 r
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How to identify Early Blight & w( h E2 {0 L* N: D2 S# c' R+ {tvb now,tvbnow,bttvb公仔箱論壇+ y* m$ l) m" s+ w& p
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。( e0 a+ v' T, j, J9 K% W" X
$ G5 g( J6 J5 @# p公仔箱論壇newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 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。7 R' p2 ?# d" I! e3 M2 a, x% _
( p+ T# e2 y: `, fin color and form concentric rings, or a 9 \3 Q( H. Z! g' V5 r5 X% v5 X3 T% E9 D) {% V
bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 3 X4 @ a. F9 ]- @2 [2 G. C8 Z
5.39.217.77:88981 _5 N& f( L3 q, z leaves may fall off. Extensive loss + T' `$ Q! E4 B3 b9 U5 W" {tvb now,tvbnow,bttvb5.39.217.77:8898" [6 ]* E# u3 i' V/ w b
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。7 w E$ w7 q/ c; O7 S
/ S7 g' T# I5 qtvb now,tvbnow,bttvb ' I) _2 `7 D: G' D9 b: @. s, y5.39.217.77:8898How to identify Septoria Leaf Spot 0 H# C4 o' p: t5 Z2 v5.39.217.77:8898 ' | `- t) f% ]* y: ^5 l1 M Ctvb now,tvbnow,bttvbSymptoms of Septoria leaf spot also start 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。9 j( j0 L9 H$ R$ E7 k
" }5 n# t; Z2 Y! E9 D0 c7 e3 Ion the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5 M8 J( q$ P- Y( N6 D2 B C! z$ ]
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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. 1 O8 f4 s5 p; e y3 U) W: 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。 1 J- X/ n5 M e1 ctvb now,tvbnow,bttvbSmall dark spots, the fruiting bodies of the fungustvb now,tvbnow,bttvb$ y! f; L% X8 w\" u9 O
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。# A$ S7 e; |\" T9 J, n , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry . g4 ^- | z# W- |! d
, d% A" L$ a" P- }+ E: [8 v1 |( @Weed your garden. Some weeds, , l" L" m& O* s5 B8 O2 e! N & a* L8 n- O2 @2 g% k. n5.39.217.77:8898like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. - }$ ~; c |$ h* ?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。 h. e1 K; W& e" Ktvb now,tvbnow,bttvbRotate crop locations. Don’t 7 X2 [' P/ r8 ]. a/ Q% g7 [) Y5 M% c6 [* g
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 8 V; P1 w7 r! E0 E* D9 ~! ]6 K公仔箱論壇: h$ q& o) K! R5 N, K
where 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。& A. E1 n1 y+ b. }. h$ E
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇# }1 q. B! W2 I& S
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 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。$ k1 ~0 _: i: { E, D& k
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fungus from the soil to your 公仔箱論壇0 G8 X$ M% g9 ?
: D ?* M" M" U8 L v( ^# t- n, v$ t5.39.217.77:8898plants.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。8 {# @9 t+ g1 J7 r# W% }5 }
n7 L/ l- I9 q5.39.217.77:8898Stake or cage plants to keep them 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。% \) s# N( O8 i3 u! g3 ~5 l m F5 J
2 U- q/ K L1 u, ^5.39.217.77:8898off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and - i3 Q/ M# c' G* ]9 V; Utvb now,tvbnow,bttvb公仔箱論壇6 y% ~! W+ l$ L
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 5.39.217.77:88980 ~# B( X* B, {' [9 u2 o" f
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space above the soil without any leaves. Do not use tvb now,tvbnow,bttvb9 k* r1 U7 I6 {% d3 k
; H5 t' K1 s1 s# M7 w+ z# 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。overhead watering. : ^$ \% i. F7 A/ X5.39.217.77:8898Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ( G$ `: ?# z' E- `8 K( p* D6 SConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow , \ D8 B1 Y$ m: H
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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 ; w* z) h6 ^% M [, A + K$ S' k4 K) {, @ D3 u5.39.217.77:8898wet. Keep your plants happy and healthy. Weak and stressed . g/ d! z/ v' R8 i6 B
/ N; f4 s3 L- Z' b! y! D5 rplantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 5.39.217.77:88980 E5 o5 i- U( b; s1 ^+ S+ T% }
5 F$ q |% l5 i# S; p! m5.39.217.77:8898enough. If a plant is heavily infected ) ]0 I6 \- D2 R. z( M 5 X# L5 U6 \4 p9 l; X5.39.217.77:8898, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 2 @$ H$ i+ Q$ H" Q# H& Y6 G2 y1 e. g: J% I& R0 y
to remove diseased leaves should be disinfected before being used on a different plant.5.39.217.77:8898" N' M. d. b n$ J% v4 P2 m) J6 P
( r i# C+ b6 f( S' s; m" L公仔箱論壇Spray plants to prevent and control the tvb now,tvbnow,bttvb. Q! C0 T0 D4 F6 y
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 3 C: e4 {+ q( r4 e' i2 b' {
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GreenCure.tvb now,tvbnow,bttvb8 T! P/ l. X. X* v6 ?
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Late Blight on Tomato Plants 9 G& E I: u: j# b9 A! Itvb now,tvbnow,bttvb9 }. a% l9 k0 N6 \0 F) s
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato & R- i$ g& [8 ?8 [& t' O公仔箱論壇5.39.217.77:88981 j. e. X0 U) L0 y. h$ p plants in a garden. Once a tomato plant 8 n; a* I; f5 B. V$ p3 `
* l* W" I; x% P& @4 o' A9 Tis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇7 }7 [4 e8 f/ t3 d% i
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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 d3 H8 y O% \; t6 Y# \0 w\" j
4 b& E6 R& C3 W* F/ ]5.39.217.77:8898 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 4 H& y" Y1 A" g4 O: x5 p7 o' O2 h5.39.217.77:8898, @3 j: L* G a o: F- P
Septoria leaf spot infections will also help prevent late blight infections.
