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 公仔箱論壇# X" `1 u# W( Q
: s, ]5 c/ b* i0 \& mtvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. 0 l% [0 y8 h3 S2 _, ] & i8 b' ?4 c' S7 y* h4 S. T公仔箱論壇 ( Z0 ~, g+ G' x5.39.217.77:8898How to identify Early Blight : k& t7 N4 u' ~# }% R6 m7 p3 Y5.39.217.77:88984 g: a" q& s) E$ M4 x
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to : s1 A' A* ]! R# B# Y7 i; ^tvb now,tvbnow,bttvb 5 `" n1 h+ |! G( s9 j5.39.217.77:8898newer 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。2 m1 b% }! |8 g: V" M
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in color and form concentric rings, or a ! {! b+ e- Q: B( ~' Y
( _- V4 I; y* q* w6 E1 D$ w公仔箱論壇bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 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。# `! G" ~" {4 K& o( E, T
7 w9 A8 }% n0 I' k+ E+ O, t2 c leaves may fall off. Extensive loss : W0 _7 j9 O: [: p
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. ; {7 Z ]. X: z: l3 @) mtvb now,tvbnow,bttvb3 c3 J$ R) g1 j. b; o/ h# k
# D' w6 y5 \2 P9 ~9 }. [9 qtvb now,tvbnow,bttvbHow to identify Septoria Leaf Spot J( U9 D- O) a% B5 I5 A/ G) [2 \
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Symptoms of Septoria leaf spot also start ! E8 `4 z. ]4 U' N- ?& _ 1 ^3 E7 }1 M; s+ H- j3 Gon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change & |# a7 i# I* [0 _- \ z# C" ^2 t公仔箱論壇- h* K' a+ C/ v( X( q
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 2 a% Z0 f( w% K8 Mtvb now,tvbnow,bttvb ' z* l: w! W5 g1 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。Small dark spots, the fruiting bodies of the fungus5.39.217.77:8898\" P& P, N x1 {3 T0 H
$ M6 |2 ]" t" s; k$ Y. QWeed your garden. Some weeds, 2 v7 e+ W' o# F' 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。 1 N" U# ^# ]2 `! t8 U. b' ^8 itvb now,tvbnow,bttvblike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.2 \+ o2 d& c1 r! `( g- I
S9 q, Z7 e( ]9 Y, c2 {# P! GRotate crop locations. Don’t $ Y; ]: G+ X1 c" Z) R( V7 @' |9 A$ H8 I6 H1 ~
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 8 y( `4 `- R; B # X: h l9 _2 n1 C( }0 f' Y2 A Ewhere tomatoes were grown. + L- Q1 s; d8 ^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。( E, G' x; c0 N h9 c) s
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. 8 b8 b, i4 h" O% ~0 Z% N. Ntvb now,tvbnow,bttvbCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of " o# i* @" t' L& btvb now,tvbnow,bttvb + |5 O1 Z/ `4 Gfungus from the soil to your tvb now,tvbnow,bttvb; [; ^4 @7 ^: w
) k# Z9 H$ @0 o* j! Pplants.5.39.217.77:88981 l0 W4 j* L6 ~' N
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Stake or cage plants to keep them $ n: y8 V5 ~( B4 N" ], v2 v: gtvb now,tvbnow,bttvb * n3 }- W' J0 R) K* Y( l) J$ A1 Noff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and {9 I6 D4 S: n! J" q( y公仔箱論壇; o, A& Q7 Z. m7 y2 d
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches 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。- ^% A8 x& e/ ]
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space above the soil without any leaves. Do not use 5.39.217.77:8898! v9 E/ `2 ~- V5 n/ T6 ~/ _6 C
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overhead watering. ! B- @# a) K% D1 @# i4 ]) m0 U% g公仔箱論壇Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. + y/ A7 j1 l# V' b, [4 [/ VConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow 4 y' R& u3 l4 g1 nTVBNOW 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。 # N. F+ N! m# o5 |1 n5.39.217.77:8898fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are . u0 h' ^5 s: O$ C L公仔箱論壇9 U8 t4 s7 j5 c# c% x9 V( ^+ _3 E
wet. Keep your plants happy and healthy. Weak and stressed # {% [& j. B# z( U% X; R% r8 t: \2 K: N6 V; Y# H
plants are more susceptible to disease.tvb now,tvbnow,bttvb3 d; n) c8 E1 n& e2 [ o- Y
4 ]9 ?3 ~+ Z3 g& A; i0 ?, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 2 O& C c6 L" Z8 |" c8 ~5.39.217.77:88984 f& b M, [: P. c8 u
to remove diseased leaves should be disinfected before being used on a different plant.; G) V& F6 P" d4 V% a
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Spray plants to prevent and control the 5 h1 D- G# K- G, b- M
- V% f$ O' X+ [8 ` `; F7 R 0 |& i" `3 J; _5 a) X% X: V5.39.217.77:8898Late Blight on Tomato Plants 8 i) \- w ~ f9 p f4 U* {tvb now,tvbnow,bttvb5.39.217.77:88984 z2 M0 `0 t' [( ]' |. b
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 8 r7 b, k2 H0 ?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。 1 ^' [: X: z4 S( k7 R% d. Uplants in a garden. Once a tomato plant 4 [* O( H1 C. ?tvb now,tvbnow,bttvb 2 F- G/ ?3 H: u, ]$ Cis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 4 `& R, b; T. @! c% l4 l
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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 blight . I3 U' \) g1 L2 Ltvb now,tvbnow,bttvb \" ] D/ i+ k# G D公仔箱論壇 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and u& \/ U3 a) S& Q7 M: W+ S
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。$ k+ @5 a' S! T2 I, ~$ G9 j2 z- [
Septoria leaf spot infections will also help prevent late blight infections.
