標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

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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
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb' g' n7 P0 X+ e/ r8 L# Z
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* X) E; Y! I' X- l! ]tvb now,tvbnow,bttvbHow to identify Early Blight公仔箱論壇- J) p* B% _" x) ]3 m5 U4 C

  c6 V8 `1 @3 {6 lSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 公仔箱論壇8 g8 h  @( ^- z

! k, o1 [7 b+ T6 ?9 C5 W8 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。newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown + S* P5 @6 F/ Q2 b
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in color and form concentric rings, or a 公仔箱論壇# I/ T; ]* K\" s3 {\" D6 T
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
+ u! Z) A: f- c- K5 G1 jTVBNOW 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。
/ e5 |% Y9 x0 g/ X8 D" ]" 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。leaves may fall off. Extensive loss
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start 9 a; P. E5 S, C3 ^3 I; t

. [" m- y5 D' ~9 kon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 4 l1 ?) h) d9 c& e  `! J

: A. d( P3 x/ ?6 W& f6 [( w公仔箱論壇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& B1 ?  G  z# \# _1 H

, j: c7 \4 P3 ^% p0 b$ ]7 fSmall dark spots, the fruiting bodies of the fungus
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; u1 ~# C  [: }4 i1 v/ s, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
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and dead. Stems can also become infected but 5.39.217.770 s% p- @$ g# E) ?& s\" i\" E

) V) E  ^* y! binfection of fruit is rare.
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& o0 `1 H, X9 |* ?+ iHow to Prevent and Control Early Blight and tvb now,tvbnow,bttvb8 I$ g2 S7 C# N$ J* {7 T# t

$ k6 O+ A* x1 zSeptoria Leaf Spot
5 S- X6 F! e6 }tvb now,tvbnow,bttvbTVBNOW 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。+ Z4 K) K: c. y2 @! e
Follow the 12 easy steps below to enjoy a
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+ M* d' a. C) c9 Ptvb now,tvbnow,bttvblong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.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。; q9 }  Z' {0 Y' A# ]! n9 O5 Q5 d( B
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Weed your garden. Some weeds,
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* T9 F& a4 y  T) ~( r( t/ b" V8 R  V# Ilike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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Rotate crop locations. Don’t , e' [2 W" n1 n9 T! p" s( h

$ t; z* a/ T5 d4 b! 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 5.39.217.77% h8 X& t/ d' H2 u# t* r

2 x1 T  Y) @* K/ x. \2 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。where tomatoes were grown.5 _. [0 E: Z# ?. l, Y) l
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
! g0 F$ E& y" w( g1 {( ?5 [8 CCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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1 s# R9 F/ Q3 H6 e) Z1 ]# `* i" J; Oplants.( O: y- m" g! v
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Stake or cage plants to keep them
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* d+ M: \/ ]! u1 dTVBNOW 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。off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 公仔箱論壇4 J( N4 w1 q1 r, [$ n
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cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of
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space above the soil without any leaves. Do not use
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7 {) o1 p! |; U公仔箱論壇overhead watering. , z; E. }5 J! D- J6 I' \
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
7 s3 B- i  o/ L- W' Ktvb now,tvbnow,bttvbConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow 7 k4 a2 ^! J- X' O: N
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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 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。: _( v- b& x7 d' P

5 T* ~/ q. g& C0 {: I5 c+ k1 Ctvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed
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* }: c( J7 m, B9 Y公仔箱論壇plants are more susceptible to disease.5.39.217.773 g$ q5 c2 D9 [

2 z$ d1 ]" n! N& g3 jRemove and destroy or throw away diseased leaves, both off the 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% @; t+ D: G* [) z- B! C

$ a: f1 _2 o\" X( z3 u( `' 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。plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 4 ?1 [1 L* i2 v7 y8 C7 E$ N8 y
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enough. If a plant is heavily infected公仔箱論壇/ Q8 e- |# A9 E' U) A

: A* N( r5 H' F4 Qtvb now,tvbnow,bttvb, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used ' C" a9 }& u* j" U3 X4 v

  C4 |, Q# o; c- Y5.39.217.77to remove diseased leaves should be disinfected before being used on a different plant.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。" L. X8 {; V3 d
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Spray plants to prevent and control the
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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" e/ {. J7 `3 e5 h: lLate Blight on Tomato Plants
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" z. V2 D% g8 _$ \) o5.39.217.77Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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plants in a garden. Once a tomato plant 7 c" P+ @( a0 X5 s! K# u

/ ^6 ~+ v2 r# b+ d- C- C5.39.217.77is 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 V) Z" H, ~' M: L# y4 C
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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
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇6 c# ^3 J( k1 T! l# ?' E( u9 G- Z; _
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Septoria leaf spot infections will also help prevent late blight infections.

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