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 ! h. U1 I7 Z% Q1 B/ B; ^2 J% P
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.: H" ^& Q) d: V" U) k3 k3 Y6 w
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How to identify Early Blight 4 Y* R4 j `* l I7 M$ a! O5.39.217.77:88986 X# G% ^/ b+ G6 A
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 1 r' }' N) \7 \" C; Z# _tvb now,tvbnow,bttvb5 d* [7 a9 l* H d X$ M
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown . c- C. w9 R) f3 ^0 k8 c( f公仔箱論壇 : v1 N1 ?; N& ^* s* q公仔箱論壇in color and form concentric rings, or a # _- C& U- ^' w: m\" q* d
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 2 k4 r7 s3 L' F Y4 N0 M
- W$ p5 I: u4 |. W. B# a* X leaves may fall off. Extensive loss 5.39.217.77:8898. S4 M+ u# w* m) O
; X# }/ P3 g" y' p `2 k `of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. " A. N1 }- J9 B! j" `4 o5.39.217.77:8898TVBNOW 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 }% d. h; _8 D
0 g# K/ \. r0 D5.39.217.77:8898How to identify Septoria Leaf Spot 5 B% Y5 i5 G! z( x" w; O, b2 G, [, L * M. ]0 A2 H" O( w- A, A$ I: iSymptoms of Septoria leaf spot also start T! n0 L- f/ [+ f. _公仔箱論壇 5 E8 Y6 G% O! I" X5 Von the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 4 E7 C7 g3 J2 T1 G! o. V, U5.39.217.77:8898 + }7 o1 M. M3 Y. {6 `: Y+ H2 Mtvb 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. 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。9 P( c+ M/ t, b( f/ k
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Small dark spots, the fruiting bodies of the fungusTVBNOW 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。/ B; z1 h* l0 |% g7 D
2 y: F3 M4 Y" s; i( c5.39.217.77:8898Rotate crop locations. Don’t ! o( H @* ]/ k3 D/ u0 C5.39.217.77:8898 ; M# A B! b4 q' Cplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 0 `( R/ ^ {( { `# l
* }( ]- I; Q$ q: G. o公仔箱論壇where tomatoes were grown. 5 x( A: }) v) \1 T! o( D" ?9 R2 |tvb now,tvbnow,bttvbTVBNOW 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 Q. I. D+ v$ _6 B& c# N! [
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb) ^+ R9 Y6 F- G5 x- C) A4 e
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of - m% u0 R( }3 F9 k2 ]6 O3 J) 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。tvb now,tvbnow,bttvb7 x; W; R2 j: A; c; ^; A; U
fungus from the soil to your * U3 d, \" B, Z; xTVBNOW 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。' S5 u ?! |# O( C9 ?
plants. : G+ w) W* k3 e公仔箱論壇 7 u9 }3 _! I5 ^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。Stake or cage plants to keep them T# m' F n! q* \5.39.217.77:88985.39.217.77:8898" b2 u3 K1 l3 A1 n/ v# X
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 6 r4 |4 O: O# n1 _
. e9 \' H1 z" Hcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of + p1 h. C% Y7 }- X5 {+ c. 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。 : y" U/ S9 T% r4 M( N5 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。space above the soil without any leaves. Do not use # ~; |- o: D7 N! v
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overhead watering. tvb now,tvbnow,bttvb8 k" z# j6 K. }+ S, V5 ]! w9 Y9 \
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. X2 G5 l7 G# C, n( etvb now,tvbnow,bttvbConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow " r ?1 ?. v! O. J9 J) d" j" }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。5.39.217.77:8898; M5 c. Z+ Z) h$ {, O3 p
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are tvb now,tvbnow,bttvb& y M5 i0 I# O# i1 u2 c
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wet. Keep your plants happy and healthy. Weak and stressed ) e' B8 h/ M 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。 ( q5 [. n& `1 L# k3 @7 ~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。plants are more susceptible to disease. 3 X" \5 J1 {1 O8 A* L" B1 O- N公仔箱論壇tvb now,tvbnow,bttvb# Z+ e1 s9 N; r* s3 t
Remove and destroy or throw away diseased leaves, both off the & B. C2 T. y i: |2 u\" @8 [; o% 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。 7 Y2 F8 D6 M6 ~\" `plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early $ e' _+ t O3 W% h 7 K" Y( l! ~6 _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。enough. If a plant is heavily infected ( J$ O0 e& o) B; l公仔箱論壇 + }+ p9 F% H4 k: y F! v, E\" V, b公仔箱論壇, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used ' @3 v: F' K, i) f
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to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇6 `' S9 m9 v& M! m
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Spray plants to prevent and control the 6 i% S' y- Q8 k5 ]7 v% 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。' V* [8 T& w* F2 y9 {
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 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。% ?8 F$ u8 x1 [0 m) x
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GreenCure. 5 ~/ w4 l8 o. y& j+ [$ E Qtvb now,tvbnow,bttvb 2 Q. o4 \/ x" D3 rTVBNOW 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。 ( w2 p; }, b( N: ]/ ?, x5.39.217.77:8898Late Blight on Tomato Plants 6 d, B: n; x: u6 ^3 r5.39.217.77:8898 2 C3 x" I$ w! k4 H公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 公仔箱論壇7 S4 } D0 l5 I: B! Y
5.39.217.77:88987 s* @. \+ j5 }. v: v9 { plants in a garden. Once a tomato plant 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。/ R0 b( G7 `4 ~" \, a0 z
4 T, e) h9 J7 p$ h+ X/ j8 ~% z公仔箱論壇is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb1 {& D: F$ g" |6 d7 Y
2 r' n3 `6 ^% Q( s9 a9 I& ~5.39.217.77:8898water-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 3 L& R9 o% V: f公仔箱論壇 1 I4 h8 o0 v. o6 C$ _0 b5 \9 P: s6 RTVBNOW 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 / w0 C7 m+ S- P- r- l: ]' s
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Septoria leaf spot infections will also help prevent late blight infections.