標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

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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.
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1 f6 n! G# L6 W6 G( ?tvb now,tvbnow,bttvbHow to identify Early Blighttvb now,tvbnow,bttvb4 g6 k. g) {) P

9 b9 y! L- v$ }) T5 i" PSymptoms 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 ' v7 `1 O  P( F$ Q4 X
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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,
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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。7 H9 X; d' R, h- C1 S

* w# @% @( U% m' K! x" T4 ~1 Aof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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3 d, |* T. q- d8 d公仔箱論壇How to identify Septoria Leaf Spot公仔箱論壇) X9 G7 k+ e! }. ]- N% j
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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 公仔箱論壇# Q$ _& G- G1 m. c' H7 }, m) w

5 j  v& T' k6 b9 ?4 _& ishape 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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  B, ^7 s6 T! ]8 e; [' O& x% STVBNOW 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。Small 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 P8 a5 |/ R$ y. y' o" Hand dead. Stems can also become infected but
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infection of fruit is rare.公仔箱論壇' H) m- t: _" \' c' A
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) f" R8 A% u2 a" w% P4 E公仔箱論壇How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb8 A$ R3 l8 e5 Q! e

3 ?1 c1 F  Z! J: T/ R, u& Btvb now,tvbnow,bttvbSeptoria Leaf Spot
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) C7 ?9 p/ ^) ~9 `+ VTVBNOW 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。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。- ~% t: g9 r9 k) A9 Y

; p& K& J5 c2 s- p5 a5 Flong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5.39.217.77:8898% d/ H7 T+ s- f9 o+ R4 d- a9 e! }9 r

; K1 g+ a( Y: U7 a  K) ?' O  XWeed your garden. Some weeds, 5.39.217.77:88983 J4 [- ]& f3 [3 e4 D9 M

8 N" w9 B6 L; I5.39.217.77:8898like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇3 a! |) ^$ H; C* g2 l  ]
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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
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where tomatoes were grown.
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' ^" t/ T0 m! G9 J$ J) M  O. [1 C$ N& ~公仔箱論壇Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5.39.217.77:88988 W' T) X9 [0 c
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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% X6 {+ W) _3 L8 c' R/ dfungus from the soil to your 公仔箱論壇5 x& U1 F" A* e: ~! j

. X) d; b! I9 `$ }, n4 a' A5.39.217.77:8898plants.
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% i  }+ t5 G3 b: \8 g公仔箱論壇Stake or cage plants to keep them " |9 n* H/ E/ d# _3 Y, U1 A% z
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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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9 Q$ Y, {, B, ?! Z( l3 [5.39.217.77:8898space above the soil without any leaves. Do not use
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% b! y% c5 C8 _6 ~2 K7 n  J2 Ioverhead watering. 5.39.217.77:88983 a, M0 @( W7 X7 Z
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. - z, E2 ^/ T  z" 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
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  H% `4 I0 Q; l4 @! \, ?: [fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are . X) Y, F- @; B& N
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wet. Keep your plants happy and healthy. Weak and stressed
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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
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/ t/ Q& T- y2 ~4 ]6 S\" D% i% n公仔箱論壇plantsplant 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。$ y" S% E7 S7 x8 P8 q

3 a3 D7 |! [( J2 g0 U2 I) e) qenough. If a plant is heavily infected. q2 H3 ?+ C  S: n

. b& n+ {- y3 P* O: T, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 公仔箱論壇! p5 W  a% r$ g& @1 A
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to remove diseased leaves should be disinfected before being used on a different plant.2 [0 }7 P3 e) h; H

3 o0 T% A' Y9 {5 ]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。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, v3 b9 r2 y+ z' ?: @9 d5 M/ W5 r5 y

8 w1 ]) W  b0 o, G2 C6 f/ H& B( \" Y+ lGreenCure.
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4 N6 m3 g1 G2 b$ otvb now,tvbnow,bttvbLate 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 公仔箱論壇  O# h8 w4 C5 Z5 ~
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plants in a garden. Once a tomato plant
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.77:8898+ Z& m- y- Q; d6 _, x0 z5 Q

5 i2 f$ W6 \$ u5.39.217.77:8898water-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/ @9 t$ R' {; H( q# E! ~: R

7 d3 Z5 ~$ M7 @# I* |; W7 [. atvb now,tvbnow,bttvb 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。/ H* C/ i+ m) I! c
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Septoria leaf spot infections will also help prevent late blight infections.

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