Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but tvb now,tvbnow,bttvb7 W0 F$ \0 X& u; o. J4 [
- k! P- Z- U) @+ p" W F2 ^公仔箱論壇can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.+ r: U A! Q( a. K+ C" i+ I
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How to identify Early Blight公仔箱論壇$ @2 g0 y- L% C K
# X3 n% V( a' XSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ( P, `* G d* J* b8 w5 }1 L. P
9 `- m- D" t* {0 d* a3 P. Ctvb now,tvbnow,bttvbnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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2 H& o7 g' N$ G) e$ Z" o( Xin color and form concentric rings, or a : G+ |9 {0 |; g. w
7 S- _- q' L; } i+ a\" ^% Xbullseye 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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/ L9 y9 k6 a) L4 Q* k: R( Z5.39.217.76of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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4 d( _# u5 b/ {: }6 a. z1 @: gtvb now,tvbnow,bttvbHow to identify Septoria Leaf Spot5.39.217.764 w% h+ c! ]& a: I
; i( N0 ^' v) K. \Symptoms of Septoria leaf spot also start 9 h: O- ] |: ~( e
+ m. _7 ?1 d" W" J3 eon 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. tvb now,tvbnow,bttvb. f$ r U0 N" H- H5 {
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Small dark spots, the fruiting bodies of the fungus
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W |7 w; P% _' Y, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry ! t. ^6 s o/ K: u# [, ~ ^
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and dead. Stems can also become infected but tvb now,tvbnow,bttvb: v1 ^# l) f) ^+ H. i
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infection of fruit is rare.
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How to Prevent and Control Early Blight and
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Septoria Leaf Spot5.39.217.76* _/ S! e: q+ ~7 Q" C
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Follow the 12 easy steps below to enjoy a
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; J8 V, M9 I t7 N( j. X. Elong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5.39.217.763 R! w% A% U" @- J8 s7 U# }
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Weed your garden. Some weeds, " |, [) a% t# |0 v
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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 7 y P8 `" ^% H' c0 `
t& ?; a0 b/ Q( h3 iplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 5.39.217.765 B2 G8 m8 h4 f- U
tvb now,tvbnow,bttvb$ W4 h- y/ t1 W& e
where tomatoes were grown.tvb now,tvbnow,bttvb9 @* p. _8 `( ?4 X. F
5 g% J& L/ h) w$ ~Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.公仔箱論壇3 I' {* y% W2 b7 e$ ]4 _, t
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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( H o3 ?4 Y2 Q2 CTVBNOW 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 from the soil to your % c6 v. g1 Y; _4 V
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。 B/ I% D/ o' i: v) l0 G% d- g
plants.tvb now,tvbnow,bttvb% g4 N# o: i8 V/ c
7 d9 g; e; b7 D( ^* atvb now,tvbnow,bttvbStake or cage plants to keep them
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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 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 g# d: l9 M+ C8 @* T
+ ]( \% v9 t/ ]tvb now,tvbnow,bttvbcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of % k6 R5 u3 k9 z, U; L( a
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space above the soil without any leaves. Do not use
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# Y& [: @0 m! j9 R3 K; @% V6 v公仔箱論壇overhead watering.
& ~- n5 N X/ D/ g3 G4 N6 Y' T- l8 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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
( F/ a4 N' i4 m1 F9 B6 @2 C+ p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 tvb now,tvbnow,bttvb8 `3 }+ f8 {4 K" U! L
4 K' _. b& q5 _, O' D. v7 U# sfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 4 V+ J+ ?; I( C F# M; T& V- f
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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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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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! @2 L) q/ }, a5 L, uenough. If a plant is heavily infected/ H5 A# R* R* k. _! B
\" A0 J* Y2 N/ { i7 h5.39.217.76, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used
) z, w D: I2 C" \) G( Z公仔箱論壇tvb now,tvbnow,bttvb0 Q$ S2 E% _, u- f' K9 m/ e
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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\" t+ b9 h5 l+ t* @3 Ospread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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GreenCure.
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公仔箱論壇5 J# E% {8 a. m5 F$ |
Late 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
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2 l; s' A- y1 {4 u* P9 Uplants 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,
8 f; a% t; g! L8 v0 `% n) u公仔箱論壇5.39.217.762 C) w0 j- s3 |0 q8 }
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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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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6 ^: T! U1 z; x8 K9 C1 v5.39.217.76Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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