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 8 R7 U( p5 j y J7 o: wtvb now,tvbnow,bttvb公仔箱論壇% |4 z7 g( L. y( x7 m
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.5.39.217.77:88989 x5 P* v* M9 B9 R- L. \0 B- a
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- e: u1 q( A* K+ @% x/ |* W) w! G公仔箱論壇How to identify Early Blight : z7 v) R2 I+ g) s0 N& c 8 _+ s. ~: D' i5.39.217.77:8898Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ; f: X# j2 c0 E$ r/ H6 U/ E2 L5.39.217.77:8898 + | E0 y; P; v1 Q, Q8 w* F, @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。newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown / _2 n) D, l* v9 f ! o: k6 g4 Z2 y# ? [: }$ etvb now,tvbnow,bttvbin color and form concentric rings, or a 8 M Y! t! r5 f4 D' g公仔箱論壇7 E2 u, T0 {9 J# n
bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, : k" H5 A: l. q" G+ E! s, X& ZTVBNOW 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$ V1 K4 C& Atvb now,tvbnow,bttvbleaves may fall off. Extensive loss ! e+ E" k2 _* E+ }; D6 }9 r, c5.39.217.77:8898公仔箱論壇3 ]1 N/ ^) @0 ^ @) y- m- p- U* s
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.0 M$ A$ y- M3 d; c2 {" ]
- [: K# c, I! A- V# ?# H( O( rSymptoms of Septoria leaf spot also start 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" N, Y; K. @9 L) K
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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 tvb now,tvbnow,bttvb7 ~! A/ f- [. j6 w4 I
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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. # k* q; s! E- W! E4 |# 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。 1 s; C) L* ~2 ]4 y5.39.217.77:8898Small dark spots, the fruiting bodies of the fungus 2 y o\" C; u; s6 }4 l& _ R' w4 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。 . u) G; `7 n- \# a/ Ttvb now,tvbnow,bttvb, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb0 r ?4 V. g0 Q; r; w6 P# H1 ~' ~ A
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and dead. Stems can also become infected but 0 N5 [6 u$ N( R/ y
$ ^0 L7 L! \: H P6 z2 }. Y9 }- E公仔箱論壇Weed your garden. Some weeds, tvb now,tvbnow,bttvb7 H: R: `! y1 E0 _# Y: p
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants./ x8 h0 c! H1 q% u. I% s/ v
. w! _/ M! H; M# t: M3 ]9 N/ Y/ Z2 b Rotate crop locations. Don’t 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 Z4 r, R' d! U: f
+ `7 Z! G* }7 |, `* D5.39.217.77:8898plant 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' E f v4 D" H1 p4 F4 L5 M
2 a# U) Q6 k& e( c8 Ttvb now,tvbnow,bttvbwhere tomatoes were grown. ! I3 q$ H8 o' S& U" N" R1 Y( G9 t; h, q" s3 a0 d* F4 ~/ f
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. ~$ I+ B2 A7 T# b& U1 M$ ntvb now,tvbnow,bttvbCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 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。* S$ ~ d- [. e7 B. G6 ]
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fungus from the soil to your ! w2 ]3 w% ~& i公仔箱論壇5.39.217.77:8898; h O1 n/ k2 w% z
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。6 H" S7 I* Z5 r& m1 B8 H
7 M6 q1 x8 e, I0 { h+ }+ hStake 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。( \- j2 F3 q: S# L! ^# A
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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 ( ?& O6 t( J9 T9 G2 [$ V7 V" J7 Ltvb now,tvbnow,bttvb 1 B7 c$ u$ j* |5 [cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 8 g+ a. P+ R' \9 ?! o3 u 7 B; F! I9 r) P! z% C. btvb now,tvbnow,bttvbspace above the soil without any leaves. Do not use % {3 M7 e& c: v0 e7 C5.39.217.77:8898 $ S5 @' x. Q5 [- j公仔箱論壇overhead watering. & x: W5 z [. U
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 4 {/ M) q% s; 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。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 5.39.217.77:8898) A4 V: t& i: t: ?$ p( j) m
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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 @ k, X6 r0 n3 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。 5 U3 M3 A. W6 H4 ^0 C9 A+ _wet. Keep your plants happy and healthy. Weak and stressed ; M9 q& ~5 f% r% j: s. x5.39.217.77:88985.39.217.77:88986 ?1 b\" W1 t% e# Z+ P
plants are more susceptible to disease. 3 U. h7 Q( g) h3 |. _- Utvb now,tvbnow,bttvb 7 n/ V% d4 h) t* N6 M. w- ^! 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。Remove and destroy or throw away diseased leaves, both off the ) T$ Q6 Y+ P' P6 p. s+ A1 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。; Q7 z9 Y( Z9 @, ?* a
plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 0 T; O* Y) H9 v! ?5 ^% Otvb now,tvbnow,bttvbtvb now,tvbnow,bttvb+ L0 I0 y& s- ^. z$ p: b4 b
enough. If a plant is heavily infected; i4 A- r: O5 e d+ o) Y
: c5 w7 ~. [2 j; A: I1 s* } , the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used tvb now,tvbnow,bttvb8 T! G# T7 N, {* E2 o
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to remove diseased leaves should be disinfected before being used on a different plant.5.39.217.77:8898" q/ P3 I( \6 f. k
% t/ z- c7 x% S5 X/ VLate Blight on Tomato Plants ; x }& J) U0 H1 Y5.39.217.77:8898tvb now,tvbnow,bttvb1 y4 P% N, d5 q w' H2 x/ q! z
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato : s* J- N/ C# C3 f' w1 U$ u0 H' ~公仔箱論壇1 y0 B) E% ^$ R- u1 L plants in a garden. Once a tomato plant ' ]- f, H$ O/ b1 e6 ?
3 a R) U5 X* T o* o5.39.217.77:8898is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 4 f2 x8 _% U+ [. E ~公仔箱論壇 5 q3 ^ ~+ `; N5.39.217.77:8898water-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 blighttvb now,tvbnow,bttvb( Z) B& ?8 D, y) q
* P, A8 K3 L! P can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and $ H7 }) @$ g K: qtvb now,tvbnow,bttvb ) x; n2 K) e' @7 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。Septoria leaf spot infections will also help prevent late blight infections.
