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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[4 I3 w' S$ d; w6 P5 |2 {公仔箱論壇can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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How 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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; ]* `' k* C m0 ]8 J' u7 k8 d. tos.tvboxnow.comnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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$ `& C2 }9 T3 Y/ q) bin color and form concentric rings, or a
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9 M8 Q4 ^( w+ W公仔箱論壇bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,
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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.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。* W9 ?% D `; K; ^9 y
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How to identify Septoria Leaf Spotos.tvboxnow.com" L& w6 ?) @: ~5 G7 P. k& r1 C
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Symptoms of Septoria leaf spot also start 6 T* _& @/ P) R& O9 m# W! T2 ?5 _
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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 os.tvboxnow.com) s' L3 |' J3 X! V, n' `
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shape 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。3 O7 P" E. l! v8 \/ r- b
# q5 W" u9 h9 m9 vSmall dark spots, the fruiting bodies of the fungus
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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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0 }( ]2 T& x- q: Hos.tvboxnow.comand dead. Stems can also become infected but
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infection of fruit is rare.
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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。& \$ X8 z- }' c+ @8 u* a+ d
How to Prevent and Control Early Blight and
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3 Q; W( W- r. r$ u% ^Septoria Leaf Spot1 v+ f: B6 A: l3 o+ H0 V
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Follow the 12 easy steps below to enjoy a 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。, r3 S3 M8 K, ]' s4 I3 A: y
1 T& s; N1 w% [: l2 z& R& Y3 o2 ctvb now,tvbnow,bttvblong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.$ x$ P9 m n9 ?) J# u* J& f1 g
; ?2 l" r0 @% u) p# ]9 x0 l; X公仔箱論壇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.
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Rotate crop locations. Don’t os.tvboxnow.com# s" N9 [ S% `1 o+ [4 u' N& |
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。/ x! c) \2 `* K. _: D
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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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.os.tvboxnow.com! t7 y/ j, L0 o. G% K
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 6 g- ?% T: P: T( P! j. B1 S
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fungus from the soil to your & k* `$ [, W- z% L5 q
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plants.* p1 G% k* e7 c6 f) m$ Q
! l. o4 W8 {6 |: dStake or cage plants to keep them % T, ?+ g) M7 \4 ^
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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 公仔箱論壇4 K; s9 G/ q, B
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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 tvb now,tvbnow,bttvb4 q% P( l `+ i/ P8 z) n! L6 h2 u
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space above the soil without any leaves. Do not use
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) y4 o' g7 R: e/ z% N, Ntvb now,tvbnow,bttvboverhead watering.
" t' J) O# N7 V) utvb now,tvbnow,bttvbAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. tvb now,tvbnow,bttvb' J l8 H& ?3 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 os.tvboxnow.com" a( Z& k6 w" i
: j* r6 f* T" f+ D, 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。fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are
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4 [: s3 r& \3 r+ fwet. Keep your plants happy and healthy. Weak and stressed
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$ r: r; v/ e4 ^& k+ o5 W公仔箱論壇plants are more susceptible to disease.3 I, e7 I) A/ w* F
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Remove and destroy or throw away diseased leaves, both off the
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3 V5 k) G q! G$ w8 L公仔箱論壇plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 公仔箱論壇: g3 ?, W& U" e
! o) i0 l9 w! Z2 B/ N& Z' s' ~enough. If a plant is heavily infected公仔箱論壇' q/ X# M% G& D0 n# h! R6 ?, t
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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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! ?+ {5 w; I# {" i' u) ytvb now,tvbnow,bttvbto remove diseased leaves should be disinfected before being used on a different plant.tvb now,tvbnow,bttvb7 R, N8 [, L+ U# {+ v; b9 y8 l
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Spray plants to prevent and control the % j( @ j+ [* v9 |8 z1 x
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 b\" A* [, O6 h! n
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。4 b9 x) V) D% z7 e5 `
5 A& t. D# ?8 { l: n0 Fos.tvboxnow.comGreenCure.: I0 f3 x/ N% h$ i$ F2 {1 |
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Late Blight on Tomato Plants* w& L* p! {9 }' @' q
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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' J1 q2 K5 F5 x- ?) _7 Tplants in a garden. Once a tomato plant : o5 ?. n- n s& X, b, f
' B; I- X3 e" y$ u* ?os.tvboxnow.comis 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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/ L/ a) G' R: J/ |4 ^公仔箱論壇 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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# x+ g8 A* u6 T! [/ S/ ~Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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