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$ L, c: b B- a: B
5 k. H$ q3 t6 C/ \& |* Z6 Ycan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. / @ e: U# `+ r5 V9 V + s0 K% ?3 w' D( V: g: G: [ - F! \4 {3 c6 A9 s, ~0 E& s/ x! ]5.39.217.77:8898How to identify Early Blight , Y9 V' V! c& F' K/ p6 g. j5 l8 ^: [5.39.217.77:8898 , e' ? _% B* e1 O# C+ E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 5.39.217.77:8898' A7 |5 K" G6 i5 N. B
" U! Y+ a# c% T) }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 tvb now,tvbnow,bttvb7 A, G$ g/ L2 V7 D2 C2 E- ]
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in color and form concentric rings, or a * |; }1 b- p( d4 y6 J4 u- a3 ?: X公仔箱論壇 : v+ v- _2 B\" }' Ybullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, * Q) S( w( E, S
tvb now,tvbnow,bttvb4 b: z3 W q5 p leaves may fall off. Extensive loss 公仔箱論壇( G' C, h' D' J( I0 `: u
5 H* q# U! t& q6 E, f公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. 3 p' f* }) O. A1 S, D$ U3 Vtvb now,tvbnow,bttvb + n. J) y% V O7 Etvb now,tvbnow,bttvb ! m. b. |2 z( y8 K( `tvb now,tvbnow,bttvbHow to identify Septoria Leaf Spottvb now,tvbnow,bttvb; }5 {( C! }& W- l3 Q" f3 Z! C
; \: ]# E0 q7 i公仔箱論壇Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb" w2 a1 \' B4 X- a; e
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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 公仔箱論壇& Z$ I, S; G* k; J0 }: _; ^5 x) h
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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. * b, g5 o& g4 U- A1 M " M& ^# u, A6 c9 I$ p5.39.217.77:8898Small dark spots, the fruiting bodies of the fungus : A% p% t: k\" G1 G) y, z% ~( G% Z7 a公仔箱論壇 ' V1 Z+ _' l: ?2 i6 t% |. f, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 3 a8 `$ m/ D$ g$ X: atvb now,tvbnow,bttvb / J" U+ _; v9 ?+ f% _公仔箱論壇and dead. Stems can also become infected but 2 m6 O5 H# r, p% i0 E/ n5.39.217.77:8898 5 D& P- W0 H2 p; }# E: X\" w; d2 B1 c2 @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。infection of fruit is rare.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。 `: }$ x8 Y# p, t; E
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How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb- v1 P5 B+ o6 c
' ?9 ~) T0 E/ V& m& M) r1 e) ?$ uWeed your garden. Some weeds, 9 N- f7 s, e# q3 w: u
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. / p/ {- g) Q- ]0 r* c + C7 O, N) H+ l e: ] f3 ?7 b; p" `Rotate crop locations. Don’t 5.39.217.77:88984 B. Z ~8 p# \) v& r/ y. ?
8 h" G8 K2 ~4 L' `9 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。plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas % N$ B! V% x5 x( s# n9 K8 X/ K公仔箱論壇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。4 }5 k ^( }9 i( b ^0 z* B0 l
where tomatoes were grown.0 X0 L! Z6 `5 @* ]
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5 n7 r/ z: T' s6 e
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of " T+ n. s) a; ?* y+ p; r9 e- ^公仔箱論壇公仔箱論壇; b( `& w: {# F: V5 C
fungus from the soil to your + l8 o& r. c4 {9 F7 f+ ~# C
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plants. 2 q" h9 v/ R& [6 e9 ?1 ~tvb now,tvbnow,bttvb & x, |$ u0 ^) E1 {- s6 B! n" y- F5.39.217.77:8898Stake or cage plants to keep them tvb now,tvbnow,bttvb5 R$ M5 {8 n; g# H
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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 ; W6 \& t2 v' T* ^! t : y& V# }1 ?, Y* n" _公仔箱論壇cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of ! U. e' ]/ a5 `- s) m" q7 X公仔箱論壇公仔箱論壇 P& l) a' T( I; I
space above the soil without any leaves. Do not use 5.39.217.77:8898 C; q4 p1 \! d! d2 ]
: g: k- Q- R2 U6 J公仔箱論壇overhead watering. 2 i. x6 m6 v% h& 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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. : s% F: _( `2 g7 lTVBNOW 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 & Q% A0 H* p6 S- qTVBNOW 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 ~8 B! y$ C* v- t& [
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are , e u4 t! s2 ~ ^0 v' X5.39.217.77:8898; o& @2 A( C0 B" M7 A' Z
wet. Keep your plants happy and healthy. Weak and stressed 3 g% s7 t, V4 Y+ }: \7 w: v% S
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plants are more susceptible to disease.5.39.217.77:8898! x' ~+ c) B- B& `
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Late Blight on Tomato Plants5.39.217.77:88986 j1 @; z: @, @6 B( g
: V6 |7 ^ ^+ |0 g: K5.39.217.77:8898Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato . ?0 G: C& ] F+ V! }6 K- Q ' s- `( t6 I7 u$ d8 L7 h9 q' 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。plants in a garden. Once a tomato plant , o+ J/ O4 f+ ~6 e& g( U; V3 ~+ l! 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。6 P( M. a& v0 L$ i
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.77:8898 o) C3 n) f* S! g8 U
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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 blightTVBNOW 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。# r* Z* Q5 j. Q' [5 M
/ A3 g$ b7 z5 I can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 5.39.217.77:8898( m* n4 P1 o! c
! h; B) T% f5 n# x# B9 CSeptoria leaf spot infections will also help prevent late blight infections.
