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 * n1 T( ?6 @" e- s3 q C5 F
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.0 G0 I/ n" j: v/ k5 {, ^. x" x3 c
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How to identify Early Blight % X. W v- O7 S+ l: r3 q6 E- j6 O! b) E& M
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 6 c$ {6 S2 }( t9 k" OTVBNOW 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。5.39.217.77:8898# \4 ~5 d* C6 `) Y" Q2 U/ N9 v# o) h
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 0 W4 Z; W) t& P3 I6 p( ~tvb now,tvbnow,bttvb% M1 S$ u8 u/ `4 N+ O$ l
in color and form concentric rings, or a : l8 [; u4 j% P* Z9 p4 N
& D' E8 Z0 x) h. A! s. c' l% R# Fbullseye 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: I* y% u3 l- W) B. ~
tvb now,tvbnow,bttvb/ M% v% E0 ~5 X# X0 S$ ` P! _ leaves may fall off. Extensive loss * \. D0 s9 |6 O+ Z7 C a5.39.217.77:8898公仔箱論壇) S. A/ k% o. i( s% x1 K
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. / a! l1 u4 u+ f: R; D % M% a- Y7 B5 j5.39.217.77:8898 $ `; E8 y! }: ?; ]& f5 q4 sHow to identify Septoria Leaf Spottvb now,tvbnow,bttvb# [! L/ R: F2 P' ^
- n: q7 z( E/ `0 @* ?5.39.217.77:8898Symptoms of Septoria leaf spot also start 公仔箱論壇2 z" j: `: \' H/ Y* }- g
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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 / b4 ]+ V+ O8 U# {
9 m- n6 e4 x+ Z$ E" l8 ~tvb now,tvbnow,bttvbshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 1 D) Q) p+ C1 e# I( O1 \
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Small dark spots, the fruiting bodies of the fungus5.39.217.77:8898' J6 I Z0 ^/ S4 K# D
1 |+ k; Q- H5 ]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。Weed your garden. Some weeds, ) \& p1 i5 @+ L6 n5 O l# u5.39.217.77:8898 * D3 ~6 l$ C( h& X% b: f$ d9 E1 klike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. . [; r8 `3 H1 OTVBNOW 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 c2 C$ `) z6 L. }) C6 [1 ?9 x公仔箱論壇Rotate crop locations. Don’t ) F. a0 L$ y: f* s6 r2 D( @
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plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 公仔箱論壇# W" a% |- v6 Z
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where tomatoes were grown. / j( ~5 `% Q- i) S, a; R0 Stvb now,tvbnow,bttvb! f( I: N0 U1 X1 z
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb( r+ \4 j& f* Z- f3 G
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 4 \2 }$ N2 b0 ~, C+ J
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fungus from the soil to your ! w3 {! x! l& A9 M' D8 Z5.39.217.77:88985.39.217.77:8898. v' M( n# m( j2 r$ }' [4 K
plants. # p* @) k& d2 }4 i6 ]; \公仔箱論壇 * d7 g# D! @6 T( W. ~* d* B' x: ^6 e3 U* Ptvb now,tvbnow,bttvbStake 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。9 M& } T* C" q' C' I, t' Z Y0 g
* T+ Y/ j, Q& M2 j: t) v8 Vtvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and ' l* k7 e6 D) Z) b w+ V" p2 s5.39.217.77:8898TVBNOW 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 [3 \8 r2 i, C' B
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 1 z9 W$ q3 I0 ~9 k8 C+ G+ v1 {/ ? . Q- {9 x! Q0 r公仔箱論壇space above the soil without any leaves. Do not use + n: u\" w/ J! y* D( N. b: Btvb now,tvbnow,bttvb3 Q9 e! n/ c4 y# q! _
overhead watering. ! x3 W) C: Y1 P6 i ~; m" I3 ~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. 8 e% ], s+ I5 K; c8 t5.39.217.77:8898Consider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow tvb now,tvbnow,bttvb$ s( w/ Y: p& ~2 o
: w* g7 P4 b4 j3 G公仔箱論壇fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are # I) |! T# i$ j4 s7 v
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wet. Keep your plants happy and healthy. Weak and stressed 7 c( B3 x* k7 t# y5.39.217.77:8898公仔箱論壇! P6 H\" [: y$ w- y
plants are more susceptible to disease. 0 A0 e2 g" W' R6 _" e& 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。 + W8 x) B- N( R) b! g# t2 N5.39.217.77:8898Remove and destroy or throw away diseased leaves, both off the - S6 n0 Q& r; {\" O4 k
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early - R6 W) |& D! k8 j9 m5.39.217.77:8898# G# J: i8 N9 W. O0 ^0 x5 X
enough. If a plant is heavily infected 5 m& h$ [+ w( Z. Z$ P9 htvb now,tvbnow,bttvb; N* N$ t/ S8 s\" |4 B , the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 4 N; D7 w7 F. w0 y7 A# w
2 [+ D2 j" q+ s- R& f: I% j2 d公仔箱論壇to remove diseased leaves should be disinfected before being used on a different plant.; _* k/ W! c7 {* Z* c, _" v
$ E0 v* z# g! ]5 ^+ e0 JLate Blight on Tomato Plants! k7 _1 @2 r! o# z! c
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 公仔箱論壇% v, G7 F3 X. h$ x5 A/ j
; q5 `" Z& p) K$ Z1 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。plants in a garden. Once a tomato plant ! \; b' A, E6 q2 `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。tvb now,tvbnow,bttvb/ Y6 V" `% Y' [, ~* K& Y( x* \: G5 C
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, $ N; Y. I& F& R' ?( o' E
% C. A7 y$ I( k& `1 E3 btvb now,tvbnow,bttvbwater-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 ; v: [* ]2 g1 d' w- w/ p! k& F Z 0 T/ j6 Q- b4 u! p+ T: I5.39.217.77:8898 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 7 U# ~; Z! i. w9 C/ E- ` ) U0 E* Z5 I* k3 J公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
