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 # y7 i3 b8 Q8 U
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. ! {/ k* Q, J! }/ _, itvb now,tvbnow,bttvb ; v# z* J" H/ b0 b+ Z # G2 H6 s# L+ w+ m" \5 F/ T6 CHow to identify Early Blight; {& w* @+ _3 c' b
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to tvb now,tvbnow,bttvb! Y+ r& @' N4 d( V1 l: y
1 f* d7 |: f" e3 _tvb now,tvbnow,bttvbnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 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。' u5 n/ _ m+ R
/ R7 m& l3 \5 j4 C8 ^leaves may fall off. Extensive loss tvb now,tvbnow,bttvb, u' ` _; Q: {% a( s
公仔箱論壇. p) B* f- `" b8 v/ A. r! G
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇; m% y8 {, b x
2 s6 R$ x% |3 sTVBNOW 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 Q* C4 { K6 P2 e
How to identify Septoria Leaf Spottvb now,tvbnow,bttvb( T, v3 L# e$ p4 n# i
3 X1 ]- G2 G6 e+ k" k) n' 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。on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change : G7 B5 J: x7 i2 K1 y6 E; S 9 P, I: f0 @! E7 g) |" b otvb 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. ) \/ r( @. }5 _$ p5.39.217.77:8898公仔箱論壇1 S4 M% Y! A+ D$ F% I
Small dark spots, the fruiting bodies of the fungus公仔箱論壇( T# U. g' Z- E& d
+ X! n, N8 ~! i+ M ]# zWeed your garden. Some weeds, . Z7 Z" f, A0 K
) B. ~8 Z. a/ v2 U公仔箱論壇like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 3 ?, s2 S( H1 p S5.39.217.77:8898 / A% V% J$ F" p6 ]Rotate crop locations. Don’t 2 L* V' ]& B- J8 Y- t. S
: X( A1 c% ? v& J9 W! 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。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。( c" t: {) y$ ~) N# M, b- u
! C6 \$ r- p' N/ p- L公仔箱論壇where tomatoes were grown. ( c4 Z# M7 n' y* S) d: \5.39.217.77:8898 + h0 v7 b& _ d+ `* ]Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5.39.217.77:8898) H( _6 V$ w& F* Q( p0 l- Y
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 5 w% |. A Z) G; K公仔箱論壇公仔箱論壇, L) h+ H* ^, w/ U' u
fungus from the soil to your 6 j" T9 U' y- u) c. I- n" K: |, D) y; W9 x: k `
plants. " k: [3 i# I/ V% }7 i! R8 Itvb now,tvbnow,bttvb ) M/ f: H" l6 |5 R5.39.217.77:8898Stake or cage plants to keep them tvb now,tvbnow,bttvb/ @7 }- T) `5 o1 `: ^7 p
7 [8 M; z- F1 n$ m2 s- ]off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and , P$ Z; L" q9 F公仔箱論壇 4 ?1 [! u5 b+ a. Vtvb now,tvbnow,bttvbcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of - U, D* ?% o" T0 `. [ x% O8 @
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space above the soil without any leaves. Do not use # ]3 A% B9 i0 O, C; K* R7 V$ r5 b' r& R
overhead watering. " o, c9 C" {1 z7 H; y3 H0 l
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. + v1 y' \4 Y6 x1 RConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow 0 d& p0 N" _6 b) W" ?- U( t3 i
3 ^# G3 _! D; I1 O公仔箱論壇fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are ; }: ~. u" `; i' J+ \
" K6 N0 S# v/ i F. f" Z, t1 vLate Blight on Tomato Plants " |3 T- _2 O) I) @# q公仔箱論壇 3 s) z9 n; r* N6 @4 B' b5 u0 pLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 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。% {; ?# d* Q J% m4 ^
: c6 x$ g* _) s* y) }( R2 F5.39.217.77:8898plants in a garden. Once a tomato plant ( n$ I" f5 _( x% X& }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。- L4 t+ R/ s1 O7 u
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb, D1 \( I+ ]7 S' }6 _" L
2 G( U) f) |9 c; ~) ^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 9 X+ C3 I/ L7 q\" i! m* X7 C5 ?5.39.217.77:8898 # y9 S g4 l9 a' h1 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。 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and d c' T1 g4 p) l5 u6 b公仔箱論壇. c( S; f" h/ I0 y
Septoria leaf spot infections will also help prevent late blight infections.
