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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
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb" _% c& z) i, b& v
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. o9 [! R  [  l公仔箱論壇How to identify Early Blight
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5 G8 d/ O' a5 R4 @8 _) v. I1 u/ gSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to tvb now,tvbnow,bttvb0 }4 s' w( K3 R2 x" c

: H/ x% _4 m8 \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。newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 5.39.217.77:8898* P8 y2 E7 T! M; C- ]. Q
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in color and form concentric rings, or a 公仔箱論壇' Q* h% c\" [\" [- l* M; d

1 @' K* i7 w) ^: \; V6 Hbullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, 5.39.217.77:88988 H. }" v$ z: n, p. k
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leaves may fall off. Extensive loss 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。" [  |, ~( y/ S
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇: d1 Z9 F3 D. E; N9 j. S

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How to identify Septoria Leaf Spot5.39.217.77:88980 C, q: C* [: T1 e0 v5 \

- v! \0 {! I5 N0 Y8 @公仔箱論壇Symptoms of Septoria leaf spot also start
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' j) J  `/ f9 {- X+ ?2 a" z. x# won 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* e, O1 r0 H0 T5 K; l/ J0 R0 Y

& k7 W! e( j5 ^! ytvb 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. 0 Q/ l* r6 E3 o4 y

. h+ e0 d: d; A5 e, _% C6 N5.39.217.77:8898Small dark spots, the fruiting bodies of the fungus5.39.217.77:8898# u* R- q; A$ E+ }% w6 I\" G8 e

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
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and dead. Stems can also become infected but 5.39.217.77:88988 X. M+ W6 j\" d\" Q/ ]7 |: ~

5 E- w- f0 F( F( y$ }( |, Cinfection of fruit
is rare./ q4 r5 |- S% ^: J* `+ t: b9 [% D

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8 h& b- y& ]3 O6 {+ Z! N; R1 Y: 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。How to Prevent and Control Early Blight and 公仔箱論壇# b: W( j3 X5 p

( q' ?+ B2 {$ @0 R$ j公仔箱論壇Septoria Leaf Spot

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4 u5 I) v& I$ ?5.39.217.77:8898Follow the 12 easy steps below to enjoy a
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% n% V: b$ j\" [3 V0 b' Tlong season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5.39.217.77:8898( @( {, K  h' x) o
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Weed your garden. Some weeds, - a( C- {6 U& G
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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Rotate crop locations. Don’t ; R5 B# H0 m4 |4 |" n# H) S
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plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
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where tomatoes were grown.
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6 w, |8 A8 \- W; ?9 n# vtvb now,tvbnow,bttvbGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better., a0 l) T1 ^2 z: ?) D% `  ^
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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' p8 w% N" Z3 @+ `$ qplants.- x2 h2 C8 C  x' D3 t

* P$ K/ w) y: @/ w) Y6 {2 ftvb now,tvbnow,bttvbStake or cage plants to keep them 公仔箱論壇! |* C' g) W; g3 E1 X# K

" B# ?0 F: X% k! N3 o* Otvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 4 y( M, h& B. \) k( K
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cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 公仔箱論壇. L6 a+ ]9 I: C7 A  x# D( k
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space above the soil without any leaves. Do not use
* I1 n5 d9 ?( u3 s5.39.217.77:8898
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.
2 Q$ A. [8 V+ f3 @$ Y; s+ k& l% S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. 1 {6 Q, J0 u: P+ p6 \* q! g
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
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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。' C5 ?+ c( q) w, @( K3 Y
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wet. Keep your plants happy and healthy. Weak and stressed
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: D0 G8 X8 c6 z- ?公仔箱論壇plants
are more susceptible to disease.
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% R& @) M, M) u- RRemove and destroy or throw away diseased leaves, both off the
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plant and any that have fallen onto the ground. This may help stop the spread if caught early 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。4 I* \0 W* x% R, H  g" @
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enough. If a plant is heavily infected4 K6 W$ U+ ~% N/ M+ m

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, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used
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to remove diseased leaves should be disinfected before being used on a different plant.
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5 B- u1 J: a( o: I5.39.217.77:8898Spray plants to prevent and control the
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( d5 \( F' O( @7 Y+ K6 B- j+ r1 uspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try 公仔箱論壇5 x1 x# l8 z2 A6 \! v: R/ k

: j' T2 q0 U& q- uGreenCure.
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Late Blight on Tomato Plants
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 5.39.217.77:8898$ {2 }* k% M  d: g. w
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plants in a garden. Once a tomato plant 5 H0 M' A3 }. V1 w  h! e# y

. x& n8 r, ?+ ]7 I; _is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
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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
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 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 k1 ~' D* g  J5 ^
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Septoria leaf spot infections will also help prevent late blight infections.




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