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 + s2 d4 I: I' h+ n" Stvb now,tvbnow,bttvb 2 P2 Z* D4 k; d r+ j r% B) \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。can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. ; D0 M3 j ?" j) z" I- x8 ?* F- 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。 0 b0 X7 J7 S- h( D/ B. ?5.39.217.77:8898 1 y7 J/ a& } {' {# r1 v N+ b/ gHow to identify Early Blight : |' F2 F% ]; p9 |6 v# G0 ~- \公仔箱論壇 5 o \+ J0 Q" i7 }1 V公仔箱論壇Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to . K1 r8 p, d( [) Z6 |" y. y- { 5 w/ l+ [" A) b7 p Snewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown $ N/ J7 ` h+ D Z4 X5.39.217.77:8898) l; y/ U% n6 _
in color and form concentric rings, or a 公仔箱論壇- o* v\" A& Z- K
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 2 X! S) v0 y/ d4 P2 [' i5.39.217.77:8898tvb now,tvbnow,bttvb4 [+ y T. p5 [& g4 R0 p leaves may fall off. Extensive loss ! B) r7 G! s: b0 A1 s: L1 p5.39.217.77:8898公仔箱論壇; N9 V2 s( q j5 |+ O6 A! ]
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. & w2 r# Q1 p; x7 J5 B9 ~$ e & T2 e* }, H2 @% c1 ^2 Y5.39.217.77:8898 : ]1 T" N( p6 j KHow to identify Septoria Leaf Spot公仔箱論壇6 ]% f! j& ?% y; r: R8 f& u
( u9 C9 |% ^$ @& N7 c4 Y; GSymptoms of Septoria leaf spot also start 5.39.217.77:8898% o8 X" f0 x3 i7 ~9 H
; \' u, G8 D1 L" K公仔箱論壇on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 4 U$ X8 R7 {- }% A* l
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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. 2 E# w9 `3 e6 J# O- z& I7 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。 + d- `2 }( H, _. s; \0 S& K3 d3 f公仔箱論壇Small dark spots, the fruiting bodies of the fungus 3 a: `; |( r7 B0 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。 Y% ]' X1 Z0 Otvb 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,bttvb9 ?3 q% s# C& B
4 {* q- M. N3 [& ?+ `: H0 Z, YWeed your garden. Some weeds, & P" A9 w: [6 O" {
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. ! @+ Y7 h) 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。5.39.217.77:8898# M! Q; [) w+ u8 f* p Rotate crop locations. Don’t tvb now,tvbnow,bttvb; ~6 G& |" j- U" R
; @7 f+ b1 }( b h4 t5 V0 t @plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 5.39.217.77:8898$ x: ]# n* |' c; h! I( g2 n
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where tomatoes were grown.5.39.217.77:8898- r9 X5 s1 J6 P* ~0 k7 Y
2 s* ]! t/ u$ c: J* v3 h5.39.217.77:8898Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇* U9 @8 L& W1 c5 L+ k' e
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of : B$ I9 u2 D7 v* ~. ~2 A公仔箱論壇! H' Y+ G6 w' Y l
fungus from the soil to your ' A, T$ I% U+ W0 U# |" w' d# H, C( M
" c2 V3 I1 w+ ` S4 n6 Vplants. , |0 G: y9 I. m; }; A8 @2 d& T" F
Stake or cage plants to keep them 5.39.217.77:8898* ? K7 a5 Q9 b# [$ D
- V" \% U7 K# k4 \$ t2 X- j* Ooff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 8 `0 d2 y1 i3 W h( [' E7 fTVBNOW 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。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 o, \" }$ B! F% J6 U, b( L3 C
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of * g4 d$ e) L, O, |/ W4 s/ }, x
- I; S/ ?7 P# r% O 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。space above the soil without any leaves. Do not use 4 h4 S\" e1 O* f* I% B/ S\" ?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 _, {9 u$ I! V5 a6 E2 }! E! k6 DTVBNOW 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。overhead watering. tvb now,tvbnow,bttvb5 N6 B, I! f; V) c: X0 p
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ' I8 R$ P# [5 T" ?7 @8 t; D0 aTVBNOW 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) q3 X5 G1 @* P' ~
& |; m! H7 ?5 qtvb now,tvbnow,bttvbfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are ' E( a4 t8 \" q& _5 @
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wet. Keep your plants happy and healthy. Weak and stressed 8 w% R) N* F5 x: |% V5.39.217.77:8898 3 L7 E3 x5 g1 D2 S3 K5.39.217.77:8898plants are more susceptible to disease. - \; F$ r7 J7 @! t+ 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。4 E; T7 i" u/ k) H4 E! `
Remove and destroy or throw away diseased leaves, both off the $ E: @- |! ~\" e& u\" }9 [
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb3 U& X* {8 }$ |4 F
( l- E: O# `, t2 H1 {8 B' W6 M\" r, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 5.39.217.77:88983 D2 H3 l- n) ^% j! Q5 W) Q! [
5 b1 Q8 g) G9 S2 l6 R
to remove diseased leaves should be disinfected before being used on a different plant. ! w& ]; z! l4 ~6 N公仔箱論壇- U' x( ^) F0 p% |3 F
Spray plants to prevent and control the 7 p+ P3 d5 m, u( B6 t$ d$ x公仔箱論壇公仔箱論壇5 E! o% Q7 V, g) u3 j7 w) c/ U1 a
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try ! F8 }* u, s3 H \. `$ c$ G
5.39.217.77:88984 x6 N: S7 F0 ?% F' ^: j/ e
GreenCure.公仔箱論壇1 F$ s$ ^' Y# ]6 K5 F8 _% l
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Late Blight on Tomato Plantstvb now,tvbnow,bttvb; \0 m% J) D) [2 A6 c! q
?" f7 Z# c& `" G$ Y1 RLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato ' ]% i+ R7 ~5 I5 f7 z Q
- l% H5 U' x. V# b5 R2 n, d. }4 Etvb now,tvbnow,bttvbplants in a garden. Once a tomato plant 公仔箱論壇6 x8 m9 g9 _. I ~' u
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 6 c- M- u* q7 U0 ]- R7 `% ntvb now,tvbnow,bttvb . j& f2 l2 i8 `8 h1 ewater-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 $ P3 W G. q! s& r: S$ v5.39.217.77:8898tvb now,tvbnow,bttvb& X. P5 h8 i: P; a4 O* o can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight 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。$ F6 `, | m6 T# z8 e' g
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Septoria leaf spot infections will also help prevent late blight infections.
