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 % l( Y( M T9 B+ I$ T' `' D& k3 _3 b% n: ^ u9 j, _7 L* R
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. $ ?) V* G: }+ r. C3 v& t! i公仔箱論壇公仔箱論壇- S9 E$ l# \7 M7 h
6 K4 M9 Q8 G1 Q: \4 ktvb now,tvbnow,bttvbHow to identify Early Blight+ S- [! ^( a9 I
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' ^8 q1 r/ _2 r1 Q+ U. _" j
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to & D6 w) X$ B) O4 Y9 p* p
s4 N) n9 N. J1 A z; }newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 0 V! Z% k! c6 O! f; j5 I
% A' H: q5 N4 B P4 o$ k+ QTVBNOW 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 ' |\" |, \% ^2 \7 }+ Q) D5.39.217.77:8898 3 ~1 y% w5 q2 f7 _# Gbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, # K, Z4 N+ U/ s0 }1 c, h& ftvb now,tvbnow,bttvb 2 G7 X# \. z: V! P: X5 H公仔箱論壇leaves may fall off. Extensive loss ( y2 n$ e' i" C 9 c2 E; |- u0 D% R2 n+ y! w P' ] ?3 zof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. . G" K5 }* x6 {- I公仔箱論壇 2 t3 T. z/ ]2 x! W& a5.39.217.77:8898 3 C. W9 K) r. r* `公仔箱論壇How to identify Septoria Leaf Spot ; ?: v/ L1 |5 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。 . E0 ?; Q. \& B& R6 g& c( Y7 J: |5.39.217.77:8898Symptoms 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。, O* x* K! ]) J. q7 o
) z$ Y$ A1 i! S, u+ ]$ N+ Zon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change ! n1 C p9 e" l% c/ J) G5.39.217.77:8898 ; u$ V; q) F, C* I3 ltvb now,tvbnow,bttvbshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 8 D, J7 [6 _* {tvb now,tvbnow,bttvb 8 m- b& a: x& p C6 @# g* e2 ?公仔箱論壇Small dark spots, the fruiting bodies of the fungus5.39.217.77:8898\" H2 ^& z( z8 D7 r\" ~) s
5.39.217.77:8898/ a5 D# O! t2 H* q$ N& ]) b , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry " S# T K) j6 p3 G' V1 y/ ntvb now,tvbnow,bttvb, p( _5 d' R2 v% Y) W
and dead. Stems can also become infected but - y% X! C4 s O( Ltvb now,tvbnow,bttvb公仔箱論壇9 s' d, A5 z, p1 J& v
infection of fruit is rare.tvb now,tvbnow,bttvb g) m- U* F! C& N2 c2 D: p' b/ F
/ d( E7 [. v9 ~) U' u, c% z" g2 r( YTVBNOW 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,bttvb8 J9 U. w0 J. F7 P' s- M
How to Prevent and Control Early Blight and 0 S# Q4 r$ I# Y\" {6 }
6 F0 R5 o' S, T7 Q2 r1 m& xWeed your garden. Some weeds, ) T9 @' o) H. A5 Y- }5.39.217.77:8898* W8 F- Z C7 b" {" W8 O0 Z
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants." _" D8 Z' U( w* s
" I! D$ V, r- p* l7 HRotate crop locations. Don’t - d \' u+ j) n" n; n1 N2 Z" Y T! N5 ?7 y9 G
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 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。, o3 C* c k! W
1 y# X5 y( P% b7 _/ {where tomatoes were grown. 3 y1 g% V/ Z" a! B公仔箱論壇4 ?- m" ?, ]% ]; t+ o7 c- j5 `
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. * i) J; C! W5 L3 A1 S# gTVBNOW 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 : i7 U4 r' K* r6 e# f1 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。 Z" v' f4 C3 x% E
fungus from the soil to your % v0 x5 _8 k" M/ E1 _4 [7 V
0 ~/ [1 O: o# L9 w+ l) I5.39.217.77:8898Stake or cage plants to keep them tvb now,tvbnow,bttvb- P- U% G4 y* R) g5 o
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。% `4 T3 w" Q& s# B2 Y
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1 L9 O) U' r, x9 S' p
tvb now,tvbnow,bttvb7 f1 v5 _# E' C/ ^+ f- P D
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of # h! j7 t4 i" I: L' U! ? : m% r1 E" H" E) u K3 M0 Yspace above the soil without any leaves. Do not use tvb now,tvbnow,bttvb1 q' [$ b\" g5 x8 b2 \: d( @- @
tvb now,tvbnow,bttvb8 T6 [8 m$ ?& u\" Q+ j
overhead watering. 4 v4 M, u0 o+ p; E$ dAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. . Y" d( B+ T7 e; N4 v! f; F. g
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 5.39.217.77:88987 X$ ]. ~$ T% {& A' n
# f8 e& I) e7 i/ i9 v7 f9 cfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 5 u' G6 b+ W; b- _3 {6 G7 ~
0 [( [( J8 s* O& P3 B3 A! k5 \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 1 N2 N3 X: |% A- k0 I( C( 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。tvb now,tvbnow,bttvb& A( _2 V& \% |* l S" Q
to remove diseased leaves should be disinfected before being used on a different plant. ' Y$ ?3 g1 S- W8 c% nTVBNOW 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& f8 g" }4 ~0 [; @9 I ntvb now,tvbnow,bttvbSpray plants to prevent and control the 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。\" c, T! a5 r1 V: B$ }3 w& ]$ p
- O6 T P8 S% p# ntvb now,tvbnow,bttvb5 ^0 H+ h7 N# \+ [
Late Blight on Tomato Plants9 { S. V7 \2 E3 o" h
( m s2 D/ }& l8 d/ pLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato # `3 ^2 N( g, C+ g8 c+ v& JTVBNOW 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/ K" U% h$ Y) [8 j plants in a garden. Once a tomato plant * R [0 e- P; P) W) `公仔箱論壇5.39.217.77:8898' k, B9 G3 h, q
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, % B J) N! I, \tvb now,tvbnow,bttvb公仔箱論壇, i2 E9 Q* A9 R7 \
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 + w/ X; i) @: o5.39.217.77:8898. q5 u7 j% P0 ?: M4 Z can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and . G. U j0 j. M0 w9 [5 ]
7 q& S$ R- `3 U; m3 C- b" o公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
