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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 1 h- [% m2 K; t0 F7 [; A
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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 Blight7 Z" [" L9 e  \% n; w; ~+ @3 _" A
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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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newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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in color and form concentric rings, or a
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow,

leaves may fall off. Extensive loss 5.39.217.77:8898$ B: n3 J* E4 p; F6 i0 P' V

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.8 H6 H- Q) C5 S5 \1 N
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How to identify Septoria Leaf Spot5.39.217.77:8898, X( ^0 k# J. ~

Symptoms of Septoria leaf spot also start 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。& s- t+ v9 V* J% a1 [8 V* g* i

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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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。  l) ^/ G, u0 R9 m( h( h/ _: n: a
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Small dark spots, the fruiting bodies of the fungus

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry

and dead. Stems can also become infected but
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infection of fruit is rare.

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How to Prevent and Control Early Blight and

Septoria Leaf SpotTVBNOW 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。/ e- h- Z3 S# |7 V- b8 f
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Follow the 12 easy steps below to enjoy a
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb- w! ], G" Q# w

Weed your garden. Some weeds, 公仔箱論壇' V  @) ~9 {2 _+ B. n2 k
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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
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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 / ?6 w9 ~: _' K5 N# B) x+ X
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where tomatoes were grown., l/ e9 c  l- j6 J! U% L5 y. S6 s

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5.39.217.77:88987 t) L0 V- ~- G0 F; o
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of

fungus from the soil to your ' X  P! J& s9 T/ _

plants.: S4 r8 {6 N. m( o, w% h- G( w

Stake or cage plants to keep them tvb now,tvbnow,bttvb% R4 e8 e* P+ |# c: F' t
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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

space above the soil without any leaves. Do not use 公仔箱論壇; Y# C1 i. x1 J4 d: ~8 P
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overhead watering.
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. $ C% r9 {6 P9 F, \+ q2 X
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 5 {4 s* i( N% z4 T# m- w) U) B

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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wet. Keep your plants happy and healthy. Weak and stressed
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plants are more susceptible to disease.# r! Z8 u& F" ~3 O) T3 k8 ~
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Remove and destroy or throw away diseased leaves, both off the 2 R\" u! H\" Z) _  X) {* e7 R% q
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 5.39.217.77:8898% i5 s6 u) y% W0 p8 I) q. V0 u

enough. If a plant is heavily infectedTVBNOW 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。) a$ \0 h/ k# r* R6 y8 q0 q
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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

to remove diseased leaves should be disinfected before being used on a different plant.
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Spray plants to prevent and control the
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 公仔箱論壇+ @/ F$ v' B$ _; K3 S2 Q

GreenCure.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。  D& ]- c1 c$ W& C3 \: I" ~
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Late 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。( _5 W" x' p) F1 i* U" x; O

Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 5.39.217.77:88980 B) Y+ N; p5 \! ]2 g: w6 L% x) J
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plants in a garden. Once a tomato plant

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公仔箱論壇8 p$ I. J( I# Y* t- Z4 t

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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Septoria leaf spot infections will also help prevent late blight infections.

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