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 l: x8 ^$ S& ^; ftvb now,tvbnow,bttvb * U% ]% A/ I/ x K( v6 @can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.* l: ~/ _0 Z' y! w/ {. z
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How to identify Early Blight5.39.217.77:8898) [* C8 `/ u- x6 \) c, o. f$ I* \9 k
9 W) j' ]+ z* ~! j+ e4 U3 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。Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 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。" k- r; K8 }3 p2 q& U
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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 8 } J1 q: L2 a' V8 Q+ ~tvb now,tvbnow,bttvb公仔箱論壇1 b- n' E' I+ h9 y" [
in color and form concentric rings, or a 5.39.217.77:8898\" f+ |% E8 N- ?# c0 j5 U7 d/ t
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 7 P E6 P D9 L" v! g
; K; x# T" F% D/ g' V0 G, V# N# @leaves may fall off. Extensive loss & q9 s v, | F* G& H7 `% q " i1 z+ O" T/ Jof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. ; h3 U+ n& W% J& m5.39.217.77:8898公仔箱論壇8 N6 v2 J7 X, {0 m
2 a! e9 l' B7 j. H9 K& R0 F9 C3 {公仔箱論壇Symptoms of Septoria leaf spot also start ) Y2 ~ E* X, W v0 F7 }. C5.39.217.77:8898 8 w' N ^4 x. i! z* Jtvb now,tvbnow,bttvbon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5.39.217.77:8898 y# n0 k3 e6 y' c
: o$ k4 q: I" m+ 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。shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. ! w+ V: ]6 V& T& Q% n% D& G" ?
) t) ^, C( X# ~7 ~. r" T; G5.39.217.77:8898Weed your garden. Some weeds, 公仔箱論壇6 E2 A6 S+ b- n9 Q5 o- N) Y/ P) A
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. , P. \" z8 T" ]: ~公仔箱論壇# z2 O6 z- H& O Rotate crop locations. Don’t / g3 w" j. Z$ |- _0 b6 a- R7 e公仔箱論壇 1 r* U) D1 p/ ~0 j, I( U+ KTVBNOW 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 " }$ Q5 P6 h) _6 C" G1 n+ ?9 I 0 Q8 w5 b7 e6 O. L8 rtvb now,tvbnow,bttvbwhere tomatoes were grown.公仔箱論壇, O; `( j3 u; T4 `5 q* I4 l
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. ( s" o! l" B; e/ T/ H0 v W+ x3 f$ qCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 1 D% A# X' g. e( ?0 q, ^% p b; |$ z! o9 j
fungus from the soil to your 公仔箱論壇4 b/ {; ~! L* h
. B+ z- B1 s# E- C4 b) t8 {* j" G0 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。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。0 b: C' K$ f9 E' c- ~: j9 g2 z
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off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and ) j1 J) a. L" m( Q8 R* _公仔箱論壇 " k0 D( n0 E2 j( a5.39.217.77:8898cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of ( T" J/ q" A* \1 i8 ^( \
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space above the soil without any leaves. Do not use 0 x- H\" N$ M/ J5 `1 e7 P! ?& b# v5.39.217.77:8898 . x7 j) \6 s5 K! u5.39.217.77:8898overhead watering. 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。- V. B! Q. ^9 k( z2 n
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. , B5 g7 a% ?5 I7 _* y8 p# Y6 T
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 " v: \, K) P: c: u# Z' ?% w9 W+ J / A' p) E" U, I D% n9 C* }/ l( 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。fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 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。* ^1 w" r7 e1 N% c6 a1 t/ v
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wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb% T! @$ e5 ^ W @
# h, }, z" j k- p0 |; S& `Late Blight on Tomato Plants . n1 ?# ^! x! q; c4 f# m5.39.217.77:8898 3 h0 D; e+ |0 }( t8 B7 RLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 2 ]! _* @+ @+ ^' d' ]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。tvb now,tvbnow,bttvb; |, g$ i8 Y/ h9 b) ` j plants in a garden. Once a tomato plant % s3 O! d( U8 V/ U& c5.39.217.77:88987 q2 q- C$ _$ Z# W# n& v G! H
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5 }4 k1 ^( [* r' B公仔箱論壇 % X6 {" i8 D. P* J0 u2 pwater-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 blightTVBNOW 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 b& a( f\" ~1 t
) o8 l- L6 Y\" c' R1 u0 C5.39.217.77:8898 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and ) F/ a1 V& Z! V/ O% X' s公仔箱論壇 2 B: C. M z& Q5 `; [/ |1 i" I+ Ztvb now,tvbnow,bttvbSeptoria leaf spot infections will also help prevent late blight infections.
