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 6 w9 R2 e- ]. t: ?3 V. l5.39.217.77:88985.39.217.77:8898( x. u1 ^2 R/ u, B
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. 6 L( t3 Q4 K/ z: u: X' 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。5.39.217.77:88985 X3 r1 i& C) O8 N/ o B: T
6 ^* A9 `$ ~' G& J9 v2 `$ `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。How to identify Early Blight $ R) j5 V& M' V- P公仔箱論壇 % ^! m' a3 o9 h! ]' K JSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 公仔箱論壇" L1 c. s, B7 U/ U4 e* j5 R5 m. _
$ V3 T3 s, G* c/ W, H! I/ ETVBNOW 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 + ^: e- Y, Z( z4 ETVBNOW 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。 % a; `2 P) E5 f% [9 l5 Cin color and form concentric rings, or a 公仔箱論壇2 K* Z% d: r5 M3 x
$ a* F, @8 O( X8 l. @tvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, $ c' Z" E! Z) l3 e, c5 O 3 E, f+ y6 z3 V# V5.39.217.77:8898leaves may fall off. Extensive loss ; h' W5 }: X: V" |. | 9 R: {8 Z* c- U1 v% B公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. + B; c6 D: c( C+ B& i: w5 o" n公仔箱論壇 7 E1 L( o* @, d8 ~tvb now,tvbnow,bttvb . Y. y3 n8 D- I7 C公仔箱論壇How to identify Septoria Leaf Spot 2 h& B" }& e. K公仔箱論壇公仔箱論壇& V: J* I# }( L9 X3 R( Z. ^
Symptoms of Septoria leaf spot also start 1 x, Y1 S/ C7 |; ?' [- a3 Q ' [3 E+ k5 j* N9 U5 J" ztvb now,tvbnow,bttvbon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change ) @' L) x$ A% x' R( m: x3 I) }8 S( N7 a' B) r% c
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 2 D3 @# ?- X1 s1 m( ~0 G
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Small dark spots, the fruiting bodies of the fungus 0 g+ O5 B: ?5 _6 s# G公仔箱論壇 1 f; v4 z: W& a$ Q+ w& i\" S6 O5 Ktvb now,tvbnow,bttvb, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry . c2 j. g$ Q7 \. a6 z3 V; v5 Q
0 }4 H$ L+ p9 CWeed your garden. Some weeds, / h3 x; d. u5 V7 O+ R/ u - x5 ^* Y# u0 p- m, Llike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.tvb now,tvbnow,bttvb+ O0 B( }+ g; `4 _) [
4 a; A) W7 R# b0 P6 N4 R2 c7 F) M+ O Rotate crop locations. Don’t * F2 C7 K) T. { ; K o1 p9 \# R, O1 H# L0 R ?plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas + X8 _- P/ v! @! l. B. Y: b) 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。- a2 |0 W) Q+ K! V
where tomatoes were grown. 8 C4 h1 P3 _3 J 6 a0 }1 ], }8 u' @公仔箱論壇Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb3 }, p' M1 M5 r3 E* u
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of , J- m% o- n3 [8 p- |% v: r公仔箱論壇公仔箱論壇8 k% ]* {' P9 w4 B
fungus from the soil to your & n. [, ^( [: D' [5.39.217.77:8898( d* L1 d/ n7 j
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。( z! H7 t" a2 M; ~: 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。3 ^2 Q: r/ L" G" q3 T0 r/ P
Stake or cage plants to keep them tvb now,tvbnow,bttvb0 v# x2 b2 G" O& C$ J- g l3 @
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( V; ]& L" R" m1 A$ ~# H
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 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。: A8 |1 t$ u6 K+ l1 X/ Y' N/ b
公仔箱論壇6 l e- i2 T4 D; p
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 公仔箱論壇" y1 F3 V; L x3 K9 `9 }
4 { Z' q. S# `/ V& yspace above the soil without any leaves. Do not use 3 e9 q( F+ w6 _tvb now,tvbnow,bttvb 4 e5 ~ Z% A: M4 P6 P1 F+ |* ctvb now,tvbnow,bttvboverhead watering. : K3 t& N V% l$ K) A8 N5 t3 Q N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. 公仔箱論壇, m. f; _/ W' u, R. G: j
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# N# E7 N; N1 Z+ P( k# K& ~2 Y
9 N$ T0 v" e L, s# s( I$ s% |# I) @7 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。fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 5.39.217.77:8898* q0 O a" c# g, x; _
! |4 R. v% M1 r ~) {# B5.39.217.77:8898, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 5.39.217.77:88980 ~" c. u/ A0 z+ P+ w" h! P
公仔箱論壇# _% l- ^ y. a! D j! ?) R8 ?
to remove diseased leaves should be disinfected before being used on a different plant./ c6 \- y( G' {+ A* i. N
5 r0 {$ j" _& ]. [# K( v* ^3 L# S+ \tvb now,tvbnow,bttvbLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 7 o* O. o$ I* Q: t5 P8 o; O7 u) g
" r& s0 `, W; N9 m% }* T公仔箱論壇plants in a garden. Once a tomato plant : Y( i, R8 j7 b2 W * ?+ n* p% k4 Ltvb now,tvbnow,bttvbis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, & e# s# \ | b0 u1 K: l & C0 q8 n* _* u8 F3 |& |& [: o+ f公仔箱論壇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& H9 V% E( h, x$ B$ T. `
