Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but $ e; P1 b" [. R$ J3 T2 z) D
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.2 n( G _8 f5 d
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$ Z: R. H2 B3 l# Q6 zHow to identify Early Blight
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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
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. d5 C+ u {* L" Pnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 7 m3 y& X/ v7 g" B
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in color and form concentric rings, or a
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/ r, Q/ p# o# m9 Itvb now,tvbnow,bttvbbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
, j/ Q5 m0 L5 p) v2 M. 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。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 H( Q" k) H7 ~7 M0 X. l4 e) _ X
leaves may fall off. Extensive loss
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.' e9 Z2 H7 [/ F& E$ v5 m
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% B" @; j& S1 o+ _: IHow to identify Septoria Leaf Spot
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% e L! e% ?6 C$ \, rtvb now,tvbnow,bttvbSymptoms of Septoria leaf spot also start 5.39.217.77. D% {8 n$ D% M; j- F% @
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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
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; ?: Z6 C) \" e( N9 ltvb 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.
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5 X+ g/ c- j, B! n& ASmall dark spots, the fruiting bodies of the fungus
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- Q/ x; g! y D, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb- c6 E ~ }8 Y9 r
2 D1 g* l, P( sand dead. Stems can also become infected but 5.39.217.771 l1 R: b% V( ?0 T\" g
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infection of fruit is rare.5.39.217.779 e7 V2 W0 Z6 C9 y% z) Z
0 Y3 G5 l! L/ b8 M/ @tvb now,tvbnow,bttvb
9 x9 q$ d: G" d( q9 y% ctvb now,tvbnow,bttvbHow to Prevent and Control Early Blight and
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! n& X6 p% s- Wtvb now,tvbnow,bttvbSeptoria Leaf Spot
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" T2 }. o1 ^% a0 N- GFollow the 12 easy steps below to enjoy a $ G1 [. n! H% I8 |
0 M: A# c; Q+ J\" x9 ~6 Ytvb now,tvbnow,bttvblong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.! K3 E# F' w6 `) F
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Rotate crop locations. Don’t
0 b: Z: r2 X! t( u! 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。
0 e9 s1 m( N7 W6 P% V7 N; ?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 公仔箱論壇4 N0 e7 _" i! {+ c+ G7 G
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where tomatoes were grown.
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.- V; r, u9 e( z8 P; y8 u7 V
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 0 G) N4 @4 L& y* b$ v
tvb now,tvbnow,bttvb# L' g$ B h, n# v j8 A. W7 U
fungus from the soil to your tvb now,tvbnow,bttvb. m* q* x. P9 C( f# j
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plants.公仔箱論壇" }% [9 W+ k( `3 a" w
) N0 G5 Y/ E L) g( ]: r公仔箱論壇Stake or cage plants to keep them 公仔箱論壇- k w( x: F0 J d5 X
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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
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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
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4 ]$ ^+ R) h7 [& s5.39.217.77space above the soil without any leaves. Do not use tvb now,tvbnow,bttvb, \! Y' F& I4 S% y3 S! j
公仔箱論壇% y7 J. D, d8 `: C& f$ C3 g/ N
overhead watering. ^1 V4 {& T) ^$ t! C" \; z
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
; i; w' c2 n% h- C- q! O: A1 u# G: l公仔箱論壇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 * ]; E2 f+ s3 d% l
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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 , s2 {9 Q; G6 A; y6 y( m. _
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wet. Keep your plants happy and healthy. Weak and stressed
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( J1 u6 g9 s, ^9 p* {公仔箱論壇plants are more susceptible to disease.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。, w1 g# T# F8 O7 @* U
% ~* l4 @: S( t; ~& Y& aTVBNOW 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。Remove and destroy or throw away diseased leaves, both off the
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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enough. If a plant is heavily infected
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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 ; g6 ?( v7 J1 ^% ^2 h
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to remove diseased leaves should be disinfected before being used on a different plant.( \, U `7 ~& K: v
4 H8 } h. z. \- j6 dSpray plants to prevent and control the tvb now,tvbnow,bttvb& ~3 h M4 ]7 z! Z6 q5 d; {2 A% p
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 2 M" {; Q# Y1 h7 R/ ~0 c1 m" m3 u
+ o0 r2 \. z) r# Q' B; ]tvb now,tvbnow,bttvbGreenCure.
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4 ?9 c( w8 m& q1 y3 \7 u, S3 ~! {公仔箱論壇
, P# b4 C1 C$ k; mLate 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。+ t9 }& z- y3 e ]0 M! D
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 0 B$ w+ B7 n6 T _
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plants in a garden. Once a tomato plant
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4 F+ a2 j3 P. B; V7 qis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb, ~$ B* V$ z ^: B/ ?5 t' t o
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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公仔箱論壇4 |* q' U1 \2 m\" _8 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。& C/ ~) [+ ]$ d5 a. A! N% h
can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇& i. k0 {2 s" z! m/ s# J
# s5 U: ^7 X) K y! fSeptoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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