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 tvb now,tvbnow,bttvb& T& V/ }$ a1 w& o
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. 4 [1 j `1 @. k! y公仔箱論壇% Z/ ^, ]7 I }) \8 m2 g. W, g) l
; _" L; G7 u* O9 cHow to identify Early Blight " |; q: l, d2 g* A) \tvb now,tvbnow,bttvb . J+ o7 g; f* Q; O% q" R; G: i/ i: KSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to * `/ s& ^/ n9 s* L5.39.217.77公仔箱論壇! Q8 A `8 [2 u
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 5 E2 V, _3 h. Y: w( 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。8 x% M6 f4 a9 O) M
in color and form concentric rings, or a t: C1 g; p. V) m' F! \, _
0 o: }* B, `8 h* p9 Q: [- Dbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, . B5 {: ^* y, G
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。2 }% B: o5 x [1 B' m leaves may fall off. Extensive loss & G' }% A# t3 A+ A- S, Qtvb now,tvbnow,bttvb8 J# k( ~7 h+ j+ [; L
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.% R2 d8 h+ L& ]. |3 `1 v
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' p0 E; p' z" @4 P; k4 j3 U7 h$ j公仔箱論壇How to identify Septoria Leaf SpotTVBNOW 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。) ]/ d) K5 j& [" h1 p0 `, Q0 m
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Symptoms of Septoria leaf spot also start 2 e7 d6 D( R' i% {2 ?" p( I! r ^
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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 % n' w6 g. L8 R+ C' A& p5.39.217.77公仔箱論壇" r) M; R2 g0 {0 t
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. , L- _! j2 t2 Y: P1 g公仔箱論壇 1 O( ~$ u2 \ a9 h3 }4 OSmall dark spots, the fruiting bodies of the fungus K1 I w, I+ k& W9 r公仔箱論壇9 n1 q- L) @, k , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 公仔箱論壇0 f; i5 c4 |( ~
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and dead. Stems can also become infected but ) r8 {8 e% O2 L$ i5.39.217.77 # s) w. M; N7 }0 e' ~5.39.217.77infection of fruit is rare. , K1 E& k1 g% E' f( e3 h5.39.217.77TVBNOW 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 p9 R% Q1 ?/ e, R
: f) B1 @+ F( y) l0 Elong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes. 7 ~; \ m! T M5 Q/ ytvb now,tvbnow,bttvb * y8 b& N0 \& ~6 TWeed your garden. Some weeds, % f4 ~0 K2 M2 d# c& z! E4 U公仔箱論壇 6 R( D5 D$ k+ C% _tvb now,tvbnow,bttvblike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 2 G2 q2 r8 r+ i; k" k : {; j" w7 v3 V# YRotate crop locations. Don’t % M# X1 N& u# w公仔箱論壇公仔箱論壇6 w. |* b5 R2 ~; y
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 4 Z' g, N Y1 C- W) l: t( S2 v L
5 K/ C( V1 |% a5 X6 R! I9 Vwhere tomatoes were grown. 5 w! `: I+ Q; _& T公仔箱論壇 ) G& S. b. W+ ^Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. - s- p. J: A' y& E9 TTVBNOW 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。Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of # V/ h6 f2 s5 b* W- Q/ B( } G; s5.39.217.77" p2 f3 Q* e5 u! L7 M
fungus from the soil to your 5.39.217.770 K& q! K, A* V' N
7 K0 t/ v& w- Q; Dtvb now,tvbnow,bttvbStake or cage plants to keep them 公仔箱論壇- c7 H0 j4 o% Q& J- q/ ]8 F! K ^
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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 2 R* p. E9 t0 ]公仔箱論壇 2 f3 |! Z+ ^. Y: vTVBNOW 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。cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 5 j: I M R6 L- f0 y8 a公仔箱論壇公仔箱論壇! C+ p( z" @' k; `2 o
space above the soil without any leaves. Do not use / P. ~+ _) Z G' x; H公仔箱論壇tvb now,tvbnow,bttvb8 ~4 J! t! k5 |& @% `# I
overhead watering. : }# A0 z& u2 k z0 x5 N! t R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. 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。1 ?- l+ ~" M1 v' z$ M
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 ( a% h$ H1 @) X, r
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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 6 p3 x; R! C9 V0 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。tvb now,tvbnow,bttvb0 |) \0 m9 r& ^
wet. Keep your plants happy and healthy. Weak and stressed 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 t2 t; E
( v: m! j, z+ |! D! K! ERemove and destroy or throw away diseased leaves, both off the 公仔箱論壇2 Z) p2 J6 d5 G
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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。( t3 p8 e6 y' r: O) L8 O9 D
* I# x6 s! S4 |公仔箱論壇enough. If a plant is heavily infected: d( F6 q3 |# H
公仔箱論壇- M: f2 o2 f9 i4 ? , the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 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" v* @" Y+ K7 i( q- {
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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。- Z6 Y. f; I0 }& N ~4 B$ M
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Spray plants to prevent and control the tvb now,tvbnow,bttvb1 s# t3 s1 O O1 r! L( a: f
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try * s0 Q: |1 A# f! y! o0 k g5.39.217.77公仔箱論壇3 a" h3 \# W1 A% k- X* ?$ L( ?
GreenCure.5.39.217.77% e$ ^9 H3 J/ ?5 F$ T7 G
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Late Blight on Tomato PlantsTVBNOW 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 g$ m% C0 U; u2 I. H
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 5 p& {4 @$ ]! e! u4 R公仔箱論壇公仔箱論壇7 ?* G" t; _. ?# {3 U plants in a garden. Once a tomato plant - C) x$ F3 K0 w5 ?5.39.217.77& H& |- I# R% B2 u1 T5 u4 W
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, # [$ q5 h4 J$ X0 N) G1 n, ~1 Y) C! Z$ m3 e: s Y
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 blight5.39.217.77- q\" H* {3 }- ^. i7 a2 N. A4 z3 Z* a
. ^' O8 J% M) N5 b6 K/ t0 H, _ can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and , J8 R% F5 k8 o/ w ( ^ D% E% V" ?; d2 t- _公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
