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 & b8 N- h+ F7 y. h/ s- ~公仔箱論壇 * f g! M1 I7 d5 ?6 v5.39.217.77:8898can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. + E& P4 x. |0 B9 q# ttvb now,tvbnow,bttvbtvb now,tvbnow,bttvb% F' v) x9 w: B) n8 `0 s
4 e) U" e0 u+ {8 F5 M# rTVBNOW 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。How to identify Early Blight. J4 t+ k; N+ L$ W8 o
& r# C D* H$ O# U: v6 f( y* C. `4 QSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 5.39.217.77:8898 q7 u- }( L5 ~1 ^
: a# s" [4 r1 b9 m/ M. V4 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。newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 公仔箱論壇5 M# R( \8 O5 l4 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。# P c* t% I4 I: ]) q3 r; d3 K
in color and form concentric rings, or a 7 a! W( b$ B! W! B- @1 J1 Ctvb now,tvbnow,bttvb ; @- ]3 A8 K: ] ~2 T5 d, e% ntvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, ! x( Y' W ]* J% U2 |+ |, } & V: M7 V2 q7 b5.39.217.77:8898leaves may fall off. Extensive loss ; {5 H+ h" p% u* E+ k6 p8 k+ r: a/ ]) s8 ]9 T2 D& i, c
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.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。$ q( X) W. _# G1 i7 n4 L
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9 _# b- e/ E/ \0 B8 j Z, Von the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 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。 S9 M E, E9 |3 c! h
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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. 4 K. R4 X9 i& |7 {+ g) [5.39.217.77:8898( O% ?" S4 Y: N" ^' H
Small dark spots, the fruiting bodies of the fungus5 ^; W3 Q$ Z4 E, y: z/ h
5 A- N5 D5 O$ w: k3 I) C , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 0 s) x: t! _* k* m5 O! M# e公仔箱論壇 2 Y: H! K9 Z* h3 ~, l, wtvb now,tvbnow,bttvband dead. Stems can also become infected but 5.39.217.77:8898( j& J L3 v. \
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infection of fruit is rare.tvb now,tvbnow,bttvb% k- r8 D8 a, |8 {: ~: ?" r
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How to Prevent and Control Early Blight and / ~7 `) p, ~' U$ F\" }' C9 M- h2 l公仔箱論壇 1 \+ A2 W& y7 i9 y4 S, E8 d9 \5.39.217.77:8898Septoria Leaf Spot % P2 A0 ~. t# [5 K2 k' z; Z 7 D( j7 ~$ y3 t7 }( C3 i5.39.217.77:8898Follow the 12 easy steps below to enjoy a 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。! k: Y2 m/ ]# m/ g- o ~1 }
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb1 R) H/ V* |9 P- N. z6 [
5.39.217.77:8898+ ~1 t' C4 {) d3 r; C Weed your garden. Some weeds, |% ?8 X, h5 p2 p3 r" A) b
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 6 ^$ b! I* q7 v! 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8 R4 B* X* m/ N 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。) M0 e/ R z) O5 j
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plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 9 D+ Q) _4 y/ W; Y5 e# N公仔箱論壇( I) D8 l' {3 x& Q7 d
where tomatoes were grown. 4 y x: b* i1 V) o) v5.39.217.77:8898公仔箱論壇+ I' d& Q- K& G3 g
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.. T/ Y% c. ]2 Y9 G
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of : w5 h( X# @7 @
8 Y6 u* `& [/ X0 y9 x/ q' ^公仔箱論壇fungus from the soil to your 6 g! Z& u, r+ z+ i) \5.39.217.77:8898TVBNOW 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。: L9 ^7 y) a0 }/ ~; n: b
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。& O, P3 s1 y8 w0 t: v: p
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Stake or cage plants to keep them . t$ [ d/ r2 r: O7 T& n' ~. t% A, w
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 B p5 n4 x# {# \
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 公仔箱論壇8 U( d( T0 e k+ I
v! x4 Q8 ?! i2 Z5.39.217.77:8898cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 8 S, j$ @& q0 z: U. ~' _
* f" P( {* r9 x; Lspace above the soil without any leaves. Do not use 公仔箱論壇; E! n6 W5 e* d0 Y
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overhead watering. 3 n/ n; _8 m' f$ w1 f3 k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. 0 _, k8 \& c0 J/ T( Etvb now,tvbnow,bttvbConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow + B# U& R' b3 G1 k4 F
9 _' C0 h2 ?+ @& {# Z5 h5.39.217.77:8898fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 7 K& P: l: K2 z* {1 ?" ]8 }1 J " r1 q% {/ o) L! h+ y5 h8 z* ?tvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed * \* j2 E1 f9 _ ^ 9 @6 {% I* q\" B( }- a0 rtvb now,tvbnow,bttvbplants are more susceptible to disease.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 W" j' ^7 g' {" x" F
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Remove and destroy or throw away diseased leaves, both off the ( N& y8 M( c6 }. C / @ d6 C/ w, `$ U3 N5.39.217.77:8898plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early : e6 i9 |. Y2 e9 k0 U$ A/ m5 n1 o% @ . @- J4 a4 V1 U) c, m' J4 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。enough. If a plant is heavily infected . }* b( D( |/ `: U: M) F: h\" l5.39.217.77:8898 7 n0 D/ ]3 A6 d r9 u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 公仔箱論壇. `) c5 @! \& k, H
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to remove diseased leaves should be disinfected before being used on a different plant.tvb now,tvbnow,bttvb' [% ], U- u# W4 Y7 L& Y
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Spray plants to prevent and control the & f! a' i; W/ Z; J. D) j公仔箱論壇 1 h( }5 Z6 s0 k( j5.39.217.77:8898spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try * Y$ c! x, k5 A' q( o # [: j% E' R0 b5 _! d* ^& \ otvb now,tvbnow,bttvbGreenCure. - O4 {2 k$ ]- K D$ O: H9 }4 Ytvb now,tvbnow,bttvb - u3 X" V% g& r W0 ^: `$ C4 W$ l! \- g. x- _+ t; G
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。4 p; K+ ?/ |& {& @0 P, `
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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,bttvb9 I6 Q1 y* }$ S: F# c9 u/ H; Y% K
9 w z) p6 P: ~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。plants in a garden. Once a tomato plant " [ E8 Q5 T6 N4 q+ a' T' h6 z# a O) {0 z$ _" ^- ?6 G
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.77:8898( ^# m- m2 H" T* ?5 ^
Q6 ]& k* R* c: V# ?2 fwater-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 ( u6 l6 J* j9 n! ~1 ?. {# V$ }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。5.39.217.77:8898+ \) e$ w M, X* _) Y. j& J, ] can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and + o+ z" _0 V: u& m% W1 c% ptvb now,tvbnow,bttvb, D% M. c, _* j) u. A
Septoria leaf spot infections will also help prevent late blight infections.
