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 5.39.217.762 S) \5 c6 f4 f2 E' a+ e5 U9 C
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.; [" y! m, F: k/ J
3 U% u& l1 a! L u dtvb now,tvbnow,bttvb 3 v6 y; _! A) f- pHow to identify Early Blight 7 E: Q% T1 H3 H6 d公仔箱論壇8 S2 U9 s4 w4 U
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 0 @) N1 X' f" h5 N) p
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newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown ' ?- T& \, `& 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。 7 Y# i t" }3 ]& n5 H公仔箱論壇in color and form concentric rings, or a 公仔箱論壇. D; k; f9 n3 b+ W3 T3 L
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+ |' U' {) i1 B
bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, , S) ?# X% K' w/ h! W; l* _; 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。$ P1 ^" n* P3 [' H. T leaves may fall off. Extensive loss + U6 A3 P. y( _ 3 D q4 N) M' h5.39.217.76of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. $ n1 N- D, ]1 ~( m- Z. f- a8 g : X8 j: g( F/ K9 {* Utvb now,tvbnow,bttvb% { U7 o J- R+ ^/ }( {% g' L8 }
How to identify Septoria Leaf Spot % B$ f- `7 G$ Y! c& j6 N5.39.217.76tvb now,tvbnow,bttvb% Y0 Z; s. k5 Q) g; U' Y4 Q& ^
Symptoms of Septoria leaf spot also start ) k: z; t; ~( y J3 k9 s0 j5 i3 s: u7 p5.39.217.766 I8 n& l/ g% d4 J' X) c7 B
on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change ) b% k# G5 m% J. u1 |tvb now,tvbnow,bttvb$ n7 j+ K: p" w1 h/ o9 g p
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 3 W0 p% Q( Y4 w2 f 9 i. l2 m- V; { {8 c5 H7 U% mSmall dark spots, the fruiting bodies of the fungus + x5 W, O6 d2 Q# S* P, t$ { 8 o: K\" @. x. o& U公仔箱論壇, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry / o: Q; i5 w7 n' ?5 U8 q& {
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and dead. Stems can also become infected but 5.39.217.76, B% o( G) k; W. [/ C' b\" |+ ~
' d% u3 o+ v. Y2 [6 I; a4 o' mlike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 4 @6 Q5 p8 c4 s; o! t 6 }4 ~& a3 H4 e- \7 q t. R公仔箱論壇Rotate crop locations. Don’t tvb now,tvbnow,bttvb) i! Y- F/ r z& ]8 q
- L2 W+ l2 g: u; Q: y# ?. s5.39.217.76plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas + @& M/ _) b0 o- ?( ~7 u
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where tomatoes were grown. 2 [0 j9 h0 p0 [7 I5 Y7 j0 t ( K! t# T9 d5 {3 n公仔箱論壇Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.8 l/ }4 k L! y7 ~4 \3 I& w' e, H2 a
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 8 t: q* u. Z* ^! m* J% w, c5.39.217.765.39.217.76& h* H; F j# [7 e
fungus from the soil to your 0 S5 D( a) S8 g# o5 n5.39.217.76TVBNOW 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。 X; J# X% b, Z
plants. 9 }4 N+ K/ }% |& s" H( V Htvb now,tvbnow,bttvb 3 V m7 s$ E h- m' G0 j, ?1 L* [Stake or cage plants to keep them 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" p* a" |9 ~
, U ~9 B( `0 Soff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 4 e k3 M8 ]. V公仔箱論壇 ; V1 V; v2 R: N- u# G% _6 P. Gtvb now,tvbnow,bttvbcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of , h+ I6 E0 [ F0 y. U4 b
- G( H$ C, L- y5 F) B& V公仔箱論壇space above the soil without any leaves. Do not use ( C9 t# A# U5 @5.39.217.76 . ?, a9 V$ `4 N, X4 i7 r- l公仔箱論壇overhead watering. 9 @! e6 ^; e+ @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. 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。$ |/ I6 H! k; Y
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 0 y$ v: t6 H5 }4 hTVBNOW 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。5.39.217.761 l; P, w" ~7 [6 K& ~
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 9 i7 x; I) [/ t: l2 f
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wet. Keep your plants happy and healthy. Weak and stressed 5.39.217.76 @ ?1 \ M+ l
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 B. f! v$ O' e0 M- R2 M
plants are more susceptible to disease. 6 B3 m2 f. Q9 g3 i0 h+ G- r/ G3 ]9 l' i3 f t/ i1 S' K
Remove and destroy or throw away diseased leaves, both off the 5.39.217.765 x/ G5 f6 F, |3 I( X$ o
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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 g& Y: y: l" [0 O; X& c& m# M
$ @" q: Q9 N2 x7 r* d0 h& G. ]) _# 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。enough. If a plant is heavily infected e/ t3 ~& C* I \" |) u\" W2 t( @' l. e, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 5.39.217.769 w4 C- p. |$ y# L8 g" q' G
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to remove diseased leaves should be disinfected before being used on a different plant. 0 u3 y1 i; G4 _6 r* g: `+ j5.39.217.76tvb now,tvbnow,bttvb3 c1 b$ p/ P5 H! o1 E
Spray plants to prevent and control the % s3 T+ K2 {( 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。% X) X( F: v: Z* I
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try tvb now,tvbnow,bttvb+ c+ P" q& v# T3 c
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GreenCure." l* e- ~+ c: ]* m
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Late Blight on Tomato PlantsTVBNOW 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。) o7 b2 ^) d, `, }' b% m
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb- Z. H6 P0 }9 z' E
公仔箱論壇& a$ H( h, V& d plants in a garden. Once a tomato plant tvb now,tvbnow,bttvb+ Q4 ~! b! g/ _# o$ {
. P8 b6 }" N0 ]5 T) iTVBNOW 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。is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5 L0 `2 j& e0 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。6 p! Z) G* L# o1 j. ?! g' `4 @
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 7 ]. ?' h' G6 K3 m5.39.217.76 / w' T! x5 S C5 F can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 5.39.217.760 |# n( X8 D7 S8 }& ]
- j! [; M1 N8 |; }4 c7 eSeptoria leaf spot infections will also help prevent late blight infections.
