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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( a9 q7 Z1 @3 stvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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' e" a5 `4 L5 l& j* HHow 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,bttvb$ h0 @) n, @# J& a
( g: D# ]+ `7 stvb now,tvbnow,bttvbnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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1 [- I% Y# ?3 b& g+ g( U$ T6 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。in color and form concentric rings, or a os.tvboxnow.com5 h/ M+ z5 R) t A0 _! o! t. Q+ n- y
, r: L. e8 M9 j0 `4 W: ]# K+ K! {os.tvboxnow.combullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb6 d/ j3 L7 ]& ?, m
b8 C$ Y$ n, R) Yleaves may fall off. Extensive loss % H& F, R) ]6 w. H" T9 L
# W7 _+ u. @3 [" A' A9 p公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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' W" R+ D5 x9 z% a公仔箱論壇How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start
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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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: E( Y- d; L2 T8 E. m* Nos.tvboxnow.comshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 1 l/ Y9 `' ]3 E
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Small dark spots, the fruiting bodies of the fungus/ J o. |3 t5 f. E1 M
$ s; t! P' w2 Y( B8 s% R\" Q1 XTVBNOW 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。, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 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。! O' D3 O# g/ M' m* s% B
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and dead. Stems can also become infected but
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infection of fruit is rare.
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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。" ]' ~' t% x- d$ D* g' [
How to Prevent and Control Early Blight and 7 d5 [, d\" \- ]6 k
/ ?) K. `+ S/ |Septoria Leaf Spot" ~8 `" j7 Q, a8 Q4 o3 S8 K# L0 b
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Follow the 12 easy steps below to enjoy a % p- {5 Q; _$ J7 G
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.os.tvboxnow.com1 h' F2 z1 H: {* ~3 @; _& N' i
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Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants./ T7 m, L! s; K6 P) e5 n: {- w; D
% K; w, @! \- ~" Gtvb now,tvbnow,bttvbRotate crop locations. Don’t os.tvboxnow.com; ]1 w3 I# e" u0 F4 [
% d* s/ ^, \- s! P' Gtvb now,tvbnow,bttvbplant 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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% E/ Z! R* H" f0 Rtvb now,tvbnow,bttvbwhere tomatoes were grown., d# n6 O c# A% a, Y/ t+ f7 g
, q0 V: a% q+ { r: t3 p' vGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.; v% P: s. R7 c6 I# [
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb9 }0 L" p6 b, D$ W0 f
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fungus from the soil to your
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7 h5 W& [: f2 T6 e' p4 wtvb now,tvbnow,bttvbplants.$ B l8 P( ~0 g" o- U
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Stake or cage plants to keep them
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& n% D2 ]3 ?# E$ `$ P8 `4 Ptvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and
2 j3 t5 n5 N1 K x; 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。* o: I H) H' R+ U1 P2 l F
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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0 x3 c: P2 b# v7 }tvb now,tvbnow,bttvbspace above the soil without any leaves. Do not use
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^; r+ \: r4 B1 A/ s; B' Voverhead watering. ! J) {& c+ }1 W% ?
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
4 T* [8 P9 h; T. x( S* B9 eConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow
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4 _9 E4 q9 Q! q5 ^% 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。fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 公仔箱論壇* z- Y% g y, j& W" d" u$ p
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wet. Keep your plants happy and healthy. Weak and stressed
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2 {. q3 Y! l, R4 F0 Iplants are more susceptible to disease.tvb now,tvbnow,bttvb: M! K5 V! \' N. g0 v# l
8 |2 h! O3 C* D, \Remove and destroy or throw away diseased leaves, both off the os.tvboxnow.com! j1 m) l+ n& I
/ S' |1 x- C5 L2 i$ B) ~; Oplantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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enough. If a plant is heavily infectedos.tvboxnow.com# R& Q% }$ z% \9 B& ]1 T\" h
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, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used
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to remove diseased leaves should be disinfected before being used on a different plant. ^9 y- D7 t! j% E% @$ l
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Spray plants to prevent and control the 公仔箱論壇6 ?2 @) B! ^. Z% p& U
5 x# T' Y: G8 } W5 c: @& ?# E3 Utvb now,tvbnow,bttvbspread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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I3 a9 D# L4 U" }' I0 } L8 m& gLate 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 tvb now,tvbnow,bttvb" N: J* }" W3 S7 r9 F- S
- X9 Y% Z/ M: e: ?公仔箱論壇plants in a garden. Once a tomato plant os.tvboxnow.com9 v' R0 V5 e, o+ T( {. u
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, & P! Q0 c6 l8 i6 O
% `$ F/ y! R" M: Wtvb 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
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and tvb now,tvbnow,bttvb7 n! S* ~' L. B0 [
( i( J2 K. w* O$ M; m* I. }5 ]公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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