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 tvb now,tvbnow,bttvb& K, K# M4 Q' f+ a' E; m9 c
! A% I& f+ a' utvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. " y' Y, O* d- l4 I5 r) u& q5 j( @5 |0 P6 ^
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How to identify Early Blighttvb now,tvbnow,bttvb& T! c" f; t/ l3 {# k3 g
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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 : t4 v$ L; S1 L) \5 r+ o) f ' x! x) O" ~! A% m* wnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 0 N% h7 w4 C6 b" X4 U$ l( M; d5.39.217.77:88985.39.217.77:88981 ~5 W- F" a$ J! L
in color and form concentric rings, or a ; i% h% f4 M O5.39.217.77:8898 ! c, V/ P- b% o6 [tvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 5.39.217.77:8898& \3 G$ e2 k9 o2 a; D
9 ^3 A) _1 R3 S' i# k+ | leaves may fall off. Extensive loss ; \' p D' n# d5 H0 ^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。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。* }* [$ U6 m3 @( O- @& K# x* j% f
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. % ]2 ]5 e! c. T, ]; K5.39.217.77:8898 ! D' q0 \, s. u6 f5 ]! Y: u! x公仔箱論壇公仔箱論壇* f0 p3 K1 l+ d0 S
How to identify Septoria Leaf Spot 6 o/ ~ g( |6 ctvb now,tvbnow,bttvb6 f. W/ G( O3 T+ @* F0 {. m
Symptoms of Septoria leaf spot also start tvb now,tvbnow,bttvb2 y# b9 K4 O5 C0 i3 |
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on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change tvb now,tvbnow,bttvb+ X+ |2 A: J9 i% }
0 U" b t' g1 z公仔箱論壇shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. _8 c! K, v) k. m% v4 s/ y. ~5.39.217.77:88985.39.217.77:88982 O. f& ]1 |! r& L
Small dark spots, the fruiting bodies of the fungus 3 H\" h7 S5 j9 d) J9 n % ^0 W0 d+ z3 r, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry - q! L4 Y6 r1 p* E7 j. p% VTVBNOW 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 }6 @3 p# b( |+ C/ l, D+ W$ Uand dead. Stems can also become infected but 5.39.217.77:8898 C# @; a% O/ M! \- f' }0 _8 ?
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infection of fruit is rare. - V- z0 O9 C. x+ P' S5.39.217.77:88985.39.217.77:8898# V1 u# g1 M1 d( l4 M
2 @4 J$ c\" |. X6 K# D+ ?. O9 M* \1 r\" glong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes. , L, t9 w" K4 ?6 p6 J! i% ftvb now,tvbnow,bttvbtvb now,tvbnow,bttvb, n @( h: M. D {8 t$ Q Weed your garden. Some weeds, + F) S" K& e% R Y) _! o# R5 }tvb now,tvbnow,bttvb 7 E2 O. Q4 Q& v" {9 g6 }like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. ( a7 ?5 ^5 v: Y4 I5 j4 I* {tvb now,tvbnow,bttvb5 j! b$ G# Q! z3 D0 g* a$ V Rotate crop locations. Don’t - K5 n9 x) \* i- z8 M4 q3 V/ |tvb now,tvbnow,bttvb 4 l, ^' B0 d, H4 q1 t8 k公仔箱論壇plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas $ b X2 w5 @; ~6 v" x$ W9 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。# f9 X5 d! | ]3 b+ i- n; k
where tomatoes were grown.tvb now,tvbnow,bttvb1 F1 _& ~, I8 T1 w" c
5 e5 u8 \1 j/ O( r. y ]/ n5.39.217.77:8898Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇, `3 a3 p- i- I' v
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of , @/ L0 i( I/ W' {$ N4 z2 H
7 ]" ~) E8 W7 t4 b6 }. z/ y7 b5 i0 @fungus from the soil to your 公仔箱論壇. T j( s4 ]3 f% @; E; D
/ {0 V& o. Q! R, P' b1 ktvb now,tvbnow,bttvbplants. ) M' b% W/ H+ |5.39.217.77:8898* f' E0 S9 e9 G8 b* M: p0 C
Stake or cage plants to keep them . p, g+ t! d3 ^0 T% z
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 W, z' m% @- M& V
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6 |6 D/ N7 y1 `& y' n2 }7 U* \0 A# ]
+ Z" ^ R( x4 k7 A' f: g+ zTVBNOW 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。cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of - p$ {! t7 i! I% F
/ [" H6 `8 Y* x8 u+ B6 ]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。space above the soil without any leaves. Do not use 0 W- o5 R& T' r公仔箱論壇, J9 r6 o& |\" Z$ m# {4 Y6 z- _- P
overhead watering. " I `0 \% n) I, S
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ! N% g. b/ C% q) M/ g& a: 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。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 1 p- F( B4 c) k1 d+ l* C6 r/ [ 6 v6 i }) K6 @3 e0 V! `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 " S+ \, i6 c4 z/ X5 H# u- @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。/ g G3 ^* r) g* O' d
wet. Keep your plants happy and healthy. Weak and stressed # Z6 s' T\" m7 o$ ~3 e% y公仔箱論壇5.39.217.77:8898/ v0 ?9 v2 r, ~3 K# S P
plants are more susceptible to disease. ' ^' B$ f6 k* h6 Z T5.39.217.77:8898- F+ K0 K/ ~2 F" X. t8 u
Remove and destroy or throw away diseased leaves, both off the i6 L. ?9 o# k) G$ L5 r5 V* I5.39.217.77:8898) k5 `\" g\" c1 _\" }4 f8 G
plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 5.39.217.77:8898. w- \" W9 J8 F9 s
1 Z1 }1 y/ W$ o" c( R4 v0 l5.39.217.77:8898to remove diseased leaves should be disinfected before being used on a different plant. 6 i+ `' o8 S, e% J% [8 j0 f/ g" ytvb now,tvbnow,bttvb e0 f8 }+ A/ U7 v+ ^
Spray plants to prevent and control the 0 c, z$ M( a' ]; B% L! ~/ O\" atvb now,tvbnow,bttvb) ]6 v% T\" c! L& W9 x2 ]6 w+ j3 D0 U
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try - S, l2 y: I5 X! k+ i3 m' 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。5.39.217.77:88981 b$ |: w9 [& C! T7 I
GreenCure.5.39.217.77:8898/ Z& g; R5 y( [. P- B
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+ Z9 A; v% l& b8 I. vLate Blight on Tomato Plants公仔箱論壇# E& B5 n% p; u& {- M C
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato ' S0 I) x2 R5 |) |0 m: d) \! d
* h! y: w- U1 T4 T* e: H2 S5 ~3 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。plants in a garden. Once a tomato plant 6 A4 d& U6 h; x! S7 @1 LTVBNOW 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 l) ~2 }) }9 L, \6 s5 D* s* U
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 8 U6 L; T* I3 G/ }4 ]( X公仔箱論壇' }) P, W5 r8 C+ u9 K
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 - J\" _6 x1 g! w0 `\" p$ 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。$ L; w& d( p' ~, _& z can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and $ }4 {) ?( ?5 z/ K) t2 Y) u5 \5.39.217.77:8898 7 Y5 {) u; N% M* ^; u$ R+ m$ V* `tvb now,tvbnow,bttvbSeptoria leaf spot infections will also help prevent late blight infections.
