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 & v% o: ?# M, c- J
+ F0 {, L- C$ v# B' B% Qtvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. ; F7 r# |- w2 N- b$ F& F* N/ h公仔箱論壇公仔箱論壇8 T6 `4 C: {' z7 l- k5 V& b( k
) q8 @$ m. ~1 q/ Mwww1.tvboxnow.comHow to identify Early Blight + I$ v8 N- F7 t0 i" v2 L* e {2 H! p7 {. y7 ]! ?Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to - g. Z2 l: `* g+ O
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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 , ^6 H R" u9 x8 x2 o! z 7 ~: c& q7 _- b& _( X* C公仔箱論壇in color and form concentric rings, or a tvb now,tvbnow,bttvb. Q' y' R( C5 E& n& r
1 [9 f8 ?' _7 s6 K9 W' y公仔箱論壇bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, # _# p5 G2 D0 }% t. X! _2 |1 W, ?& {! ~
tvb now,tvbnow,bttvb6 o, q) L! L% c% Z/ K leaves may fall off. Extensive loss & ]/ b) W- @8 }8 B% V6 t. I, ^2 \) `tvb now,tvbnow,bttvb F+ Q/ ^. G1 j7 C公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.www1.tvboxnow.com! ]6 h( {. o! C U' Y& C9 T
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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。8 H/ e# g: @ @6 b9 ]" J% u# K
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Symptoms of Septoria leaf spot also start 公仔箱論壇0 ~' H3 u& ~( T$ L. W
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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 3 `; F3 H5 ^/ @6 j, Z公仔箱論壇 Z2 [$ }0 P" K% L1 r; _www1.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. tvb now,tvbnow,bttvb7 R5 ]! z( |# J5 L+ R! P! ]
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Small dark spots, the fruiting bodies of the fungus 6 R1 n4 |% v( i7 utvb now,tvbnow,bttvb公仔箱論壇; |6 T8 i! W5 z1 a , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry www1.tvboxnow.com% {! h6 M1 X/ H5 ~
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and dead. Stems can also become infected but www1.tvboxnow.com0 l1 g& J. o* k8 B2 Y. k
( b9 a, L0 J6 a, @tvb now,tvbnow,bttvblike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. & G' u2 S9 Y1 F, G/ f mwww1.tvboxnow.comTVBNOW 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。$ y2 r* \/ A& Q+ M( | Rotate crop locations. Don’t 5 Q Z0 B5 s; {5 v8 {* R0 X5 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。5 b, P8 h0 X' f3 X
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas tvb now,tvbnow,bttvb! P7 H' k; H9 t/ _# `
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where tomatoes were grown.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。$ u# h6 D% ~2 J ]
' W' r! d5 N. p, N) x+ W& 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。Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. 8 G# A8 \& x+ x4 W# A( ]+ [$ s$ y- W0 ?www1.tvboxnow.comCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of # x+ [, V8 p/ f P$ Ltvb now,tvbnow,bttvb 0 x+ p! v! H' _" ?! v# D( B+ a公仔箱論壇fungus from the soil to your 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。& R3 d9 L+ h0 V6 s! Y
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plants. ) a+ p0 O/ L' u2 `1 ^1 y. d4 S; H# b9 z3 Y0 L- m6 G
Stake or cage plants to keep them 8 g3 _: [! x6 w2 UTVBNOW 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6 g) v6 ^9 g; }9 C+ v8 u3 S! A
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 2 i: y3 o, x7 w% h$ I$ l, a4 S公仔箱論壇 v, [/ f5 n; D$ a. I* J9 kTVBNOW 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 tvb now,tvbnow,bttvb* q' ^! j9 F* l0 [( \ }3 S$ L7 h' o
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space above the soil without any leaves. Do not use 4 x. m/ |+ J }; g, V\" s. awww1.tvboxnow.com \" P: C$ \7 A, C4 Q0 m0 utvb now,tvbnow,bttvboverhead watering. www1.tvboxnow.com- ^! n6 M3 \! T) S
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. www1.tvboxnow.com/ m8 k2 I' y$ s5 l- A
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 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。7 V& z D! V$ I
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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 公仔箱論壇; Z, ^# R) ~' |; I
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wet. Keep your plants happy and healthy. Weak and stressed ; F( {: }9 m7 d: _# u公仔箱論壇. `! @8 ]\" ^ |
plants are more susceptible to disease. ( X7 O$ @- E0 w- x4 J! G" Stvb now,tvbnow,bttvbwww1.tvboxnow.com* q' }) d0 K2 h8 u. Z
Remove and destroy or throw away diseased leaves, both off the ) v& F1 ?4 K9 j* m\" ~$ U
3 u6 m' o. f' v公仔箱論壇, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used $ j) ?+ k5 P9 O' R" @0 ?& t
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to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇4 u# V! H! Y& _, e3 l! C
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Late Blight on Tomato Plants ' \" v1 m% g% Dtvb now,tvbnow,bttvb公仔箱論壇9 A% n5 d1 ]8 p4 W! J
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 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。/ N/ M4 I/ i. f3 w: Q
公仔箱論壇6 W9 n( N+ Y6 ?! E) U+ } plants in a garden. Once a tomato plant tvb now,tvbnow,bttvb; p+ h. u. ?3 v& `/ X. A- {
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 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。: r: q+ V5 I- o# |- R4 c m
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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 / J& Q# y5 b4 U% C* X1 w: J' ]公仔箱論壇 9 z: p# P, _: \) U* w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 3 M( y0 g6 j+ A% r; n. H: Z) [5 Ztvb now,tvbnow,bttvb2 L# Q2 I4 A% D& S4 E. ^
Septoria leaf spot infections will also help prevent late blight infections.
