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 1 d" l, \/ [0 z D: I: [* ]4 cTVBNOW 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. S# v Z, F$ w$ mcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. ( v/ d6 ?$ f/ \! G6 }; l2 {tvb now,tvbnow,bttvb$ @ q. p1 `" o7 L
5 P- m1 \( _1 X5 |- w, q( s5 Atvb now,tvbnow,bttvbHow to identify Early Blight ! g$ |) ?. L2 u3 R" 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。 1 Q$ Q" h9 ~. W& u& m! \! c公仔箱論壇Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 4 C8 {6 ~+ | k% M' `6 r 1 A$ S" Q$ D5 f) 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。newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown $ Q3 y0 m! _0 A+ Otvb now,tvbnow,bttvb公仔箱論壇! |4 h! {, Y" e6 ?8 N4 ]5 U/ \7 w
in color and form concentric rings, or a 5.39.217.77:88989 w\" h2 Q) K0 B9 F# h5 Y V2 A2 R
' e+ v% E" j* S- O2 vleaves may fall off. Extensive loss . W0 ~7 ?- e( @7 U3 m Atvb now,tvbnow,bttvb . C6 r4 z6 e9 I8 ], I0 g% bof 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。6 T, }3 p5 e2 u4 z4 |
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4 Y$ E; j9 S5 d/ d, @/ O, jtvb now,tvbnow,bttvbHow to identify Septoria Leaf Spot 8 f$ Z& i/ M7 y( l3 J公仔箱論壇 2 @0 {; A& j( H6 m2 q' D4 q, _8 D" bSymptoms of Septoria leaf spot also start 1 @6 l9 F" ^" S. d& K! v
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on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 8 p& A+ ?8 P! k! ^5.39.217.77:8898公仔箱論壇4 q- \0 C; O6 e2 q5 o" v
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. . m3 P# ]0 v. V8 L# O) o6 ~5.39.217.77:8898. @8 ]* v( m; r4 @; {: F
Small dark spots, the fruiting bodies of the fungus6 K2 O) R- T# `5 a4 O' v+ O' i* r
' f( Z t+ s6 Y6 g, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb" n0 E. N [" u: d! Q
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and dead. Stems can also become infected but . s) F* ^$ g6 v8 G# D % }\" J# G2 |% h6 M公仔箱論壇infection of fruit is rare.公仔箱論壇6 f/ F. _% r9 v7 u9 N; y
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How to Prevent and Control Early Blight and & ~8 K3 }3 F7 \5 h
1 o" C: S4 w5 I: Y) I4 EWeed your garden. Some weeds, 3 W. f7 x% G% |# {7 n5.39.217.77:8898 & X7 W- `8 \0 X( F. w( Z7 n; Etvb now,tvbnow,bttvblike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.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 m. X4 S! H6 o) p2 k
+ T0 l. \3 N8 j0 u5 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。Rotate crop locations. Don’t ) V0 J5 |# Z" |6 Z$ ` s& m) m \3 U& f. |
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas d( a" _. _4 b0 B: K
9 @. W Z! x! ]公仔箱論壇where tomatoes were grown.; {) t$ f. _. {
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.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。1 }" N0 K9 m4 h# I
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 7 t+ m' B, o' I( \ w
& m! C, D% A' p2 ~$ G5 Ztvb now,tvbnow,bttvbfungus from the soil to your 0 X; C( u L& I( v9 t
6 [3 J& p7 O+ Y0 c+ c$ Jplants. 1 B1 y4 Y# C4 M2 N! S$ g ' T2 ~; N7 m0 IStake or cage plants to keep them * C; w; ]. j2 y5 B% \6 I# ]+ Htvb now,tvbnow,bttvb ' @4 K7 V8 B R z! q* Yoff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 1 G3 S. S6 e e公仔箱論壇 5 U r. V% p) }% j' S- 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。cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 0 h; ` `9 Z* N0 R: Q, \9 b公仔箱論壇 ' {6 z( j9 M6 N) t% U* Z公仔箱論壇space above the soil without any leaves. Do not use 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。- N5 Q; a1 W( ^& N& I% `8 s- P4 G
l( t\" ]. w7 @+ w6 J! hoverhead watering. 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。+ j9 H1 c- L# X9 p+ j' G8 a
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 5.39.217.77:8898& I% N: j0 v$ f6 B* W4 @
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 & t% B; W& P+ H2 n* x
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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 tvb now,tvbnow,bttvb* _, }+ l# }, L7 c y
1 |- j/ J* ~# J3 o/ P) R. C( ?1 {
wet. Keep your plants happy and healthy. Weak and stressed & z# M1 l2 p# H! Q- I5.39.217.77:8898 # K/ f6 E\" f, j2 g1 y2 U gTVBNOW 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. 4 w; j& n3 e8 b9 z# a5 Wtvb now,tvbnow,bttvb ' W' ]5 E( {1 Y4 }Remove and destroy or throw away diseased leaves, both off the 5.39.217.77:8898- ^6 N( H9 Y* A* Z& W8 ~
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 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。1 i0 P' l$ e' \$ F
) O5 Z+ d8 Z ]2 N2 `7 _1 ?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。enough. If a plant is heavily infected ) W ~$ o! D+ a' C0 m+ r0 J; n( \9 {! g公仔箱論壇 ' b8 P' i6 Y6 i: i( }+ B% h O, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 0 o7 A2 I @8 U/ v) X 9 N* r$ h* {$ X Z9 V; m% o公仔箱論壇to remove diseased leaves should be disinfected before being used on a different plant.tvb now,tvbnow,bttvb8 Y1 @# o& k9 ]. J$ }9 o6 ^6 b( F
9 l3 I- K; @3 X+ P8 d- G公仔箱論壇Late Blight on Tomato Plants 6 q. Y5 s; p0 ytvb now,tvbnow,bttvb 0 f" \- @, n* g6 V bLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato * z& [. Y/ P6 V" D/ V
5.39.217.77:8898" B3 v( S6 a% J H% W4 w- }' F" L plants in a garden. Once a tomato plant 5.39.217.77:8898. ]9 \: a5 L) ^2 Y; o5 _
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, - `4 Z0 r6 ]9 c$ c
9 b' Q# g1 o0 t: m4 J! f: V$ \% M' ]5.39.217.77:8898water-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 blight( x, O\" F9 e+ v\" B
公仔箱論壇* W. F$ ?) I4 s can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and ; F/ r/ x, m, `) |' X% t9 \' l F; G- g
& _' g d; n+ F# Z" ^# N. otvb now,tvbnow,bttvbSeptoria leaf spot infections will also help prevent late blight infections.
