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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.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。6 b" {3 t, L0 w* ?' Y/ u9 I3 Q  @0 H
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How to identify Early Blight2 o7 D  ^0 u; J5 S
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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 , ]3 D) p* E8 [+ B4 m

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.

How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start
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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 . e: o, Z* Q+ b5 [& ^9 {

shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center.

Small dark spots, the fruiting bodies of the fungusTVBNOW 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+ ~% Z' u

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry ' b* i7 O) Z$ s/ c+ i/ I

and dead. Stems can also become infected but 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。  A& M: g0 ?! N4 x, l
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infection of fruit is rare.' ]. k# d6 a& N3 B! W
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How to Prevent and Control Early Blight and
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Septoria Leaf Spot公仔箱論壇, ]; ^6 j0 E4 R$ u, m! W( L3 t

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.公仔箱論壇" i5 i+ i6 K1 w* H! W6 l
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Weed your garden. Some weeds, 5 J& Q( S4 ]; h/ Y" t$ p6 u

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.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。5 M" A3 k6 I4 Z3 |. m
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Rotate crop locations. Don’t

plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas

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.
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 0 k# e# N  x8 ^; R
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fungus from the soil to your 公仔箱論壇9 x. J) N1 c( r: m: ^3 [# B, ?+ U& r

plants.
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Stake or cage plants to keep them

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and ) k3 k0 F9 q3 x/ G

cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 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。# n3 L) R0 i& H" w% d7 P

space above the soil without any leaves. Do not use

overhead watering. 5.39.217.77:88983 t+ g, K+ S/ |8 x4 N
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
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 5.39.217.77:88988 t0 k& e0 u6 n2 B- Z6 C

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 ( U& z8 Z: N4 G, {7 @, Q
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plants are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the 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。2 H\" G3 i9 i* M# m( q1 Y. s

plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early : F. L3 i# g; R+ P

enough. If a plant is heavily infected

, 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.

Spray plants to prevent and control the * v3 k. U/ h  X- l
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try

GreenCure.) C$ w/ I# R2 i8 W9 d4 P1 o

Late Blight on Tomato Plants  `; t" b$ ^5 j# j4 l# d
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb% N1 j% H7 p. L" T# y2 y3 `. o/ N
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plants in a garden. Once a tomato plant * k- k# `, W6 b, E) c' K2 Z
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇' W$ t: U  V( N) q9 U, g( u
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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

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 2 ]: t1 l% x: B) O; i2 s

Septoria leaf spot infections will also help prevent late blight infections.

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