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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% [1 A& ~. P! g ~- o( {0 E) I9 M5.39.217.76can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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0 _4 f9 N0 k3 S' t$ sHow to identify Early Blight
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to tvb now,tvbnow,bttvb4 g& Z. Y# N0 m, M! V3 e
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newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown tvb now,tvbnow,bttvb( P5 ]# D' z+ L: q
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。* ^' M0 m1 n/ p3 x- l
in color and form concentric rings, or a
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
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) {, j E: j# U8 V4 `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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6 P" P9 o) N Z3 stvb now,tvbnow,bttvbHow to identify Septoria Leaf Spottvb now,tvbnow,bttvb6 i6 @' `1 _5 }4 {# [$ @
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Symptoms of Septoria leaf spot also start 公仔箱論壇+ \2 Z% t5 G' C# x" ^4 m
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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
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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. tvb now,tvbnow,bttvb6 z0 ~% ^/ y* f# G5 e# I8 `! s
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Small dark spots, the fruiting bodies of the fungus c! v6 ]1 T, [% K) D4 B4 }\" `
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
Y- y* v- v0 p% n: 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。公仔箱論壇0 t0 [& }$ F$ \1 n
and dead. Stems can also become infected but ! T( S# ]/ Y/ |9 O8 c& E
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infection of fruit is rare.
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How to Prevent and Control Early Blight and . x6 B+ S' M! a% R
- K. o! ^* H1 ~9 ASeptoria Leaf Spot
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( p) o/ Z3 b. O9 B r1 F5.39.217.76Follow the 12 easy steps below to enjoy a
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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% u& ?. R2 w8 A! CWeed your garden. Some weeds,
( Q6 [" S- c4 b& H" V+ y$ w
8 [$ o0 f' r0 }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。like 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 5.39.217.76% y" C" ^( @2 E& U; ~! C$ F" f
" @; Z, e, x2 ~plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
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" m9 H/ V- r$ M5 T6 C% {1 E1 l; p公仔箱論壇where tomatoes were grown.
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
2 A; d! A) K( t+ B9 r) @. A1 r: n, P YCover 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 3 g# G4 F. X8 _, v
' {5 @. P% D$ d. |2 A- X6 _# m8 A. {% Hplants.
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1 `5 J& `( ~+ s$ l, L8 L) R m [5.39.217.76Stake or cage plants to keep them
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) n9 t/ T' v' g, e+ i, hTVBNOW 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
& `; g; j {( [' a# ~ [% ztvb 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。% i3 V$ y4 V3 O
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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z2 x1 H7 i6 ?5.39.217.76space above the soil without any leaves. Do not use
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$ D. M, F/ ?) C+ Q+ K: B+ pTVBNOW 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。overhead watering. 9 c: h# C$ |4 P2 d6 l
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your 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。0 y, o: g) a d, M" m1 c
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 ) v# J+ X. V G2 y
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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
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# k# `) g7 F7 o* o9 ]9 k5.39.217.76wet. Keep your plants happy and healthy. Weak and stressed
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: [8 s' ?( y3 m3 n0 Qplants are more susceptible to disease.tvb now,tvbnow,bttvb b( s2 [9 C: j4 s5 T G# M$ b j
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Remove 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。5 i& M# P% s/ C) n5 Z- I
3 m9 G, v* j0 K& h0 u# f. d公仔箱論壇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。% @5 g( s/ n% M7 D9 `
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enough. If a plant is heavily infectedTVBNOW 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 t2 Z# j1 ^& Y) @
7 c5 A1 t* p$ Z) }# \) E: b* B5.39.217.76, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 公仔箱論壇4 g" X2 I8 K6 b+ G2 j
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to 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。0 ]8 X8 x9 ?4 Q0 |' B
3 B! b' x4 X- I# |公仔箱論壇Spray plants to prevent and control the
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# I6 R1 R7 x4 A( C: X8 ctvb now,tvbnow,bttvbspread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb& P# Q' S+ j% k9 x5 S. W/ y
" O0 B% y2 T; _7 |5.39.217.76GreenCure.
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6 ?) o0 x0 D8 M `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' e, E( H) c6 q; z5 q& }( o1 E5 s
Late Blight on Tomato Plants
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 6 X4 {: L' ~6 {/ ` `% W
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plants in a garden. Once a tomato plant
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
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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. M3 J1 C. Q; x* J. i& V
6 n! L/ R: s& w& R5 v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 公仔箱論壇9 `5 O! T# V3 c& |
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Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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