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 x* W( U. B0 J5.39.217.76can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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3 [6 |- N" Q( J+ }公仔箱論壇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 $ o) {, \0 |! q+ T& m
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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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0 Z9 m2 z6 f6 Y0 f0 ^$ d" V. C- Q0 z5 dTVBNOW 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。in color and form concentric rings, or a
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. ~$ s\" z+ ?, {5.39.217.76bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇& `# L0 I) D: q
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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。: i2 A0 x! U" ~& ~; a1 g
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.9 i; Z- L# A; R# r: \% K, S; ]
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% U- e# H# L& ^% T5 b5 h v2 e+ U5.39.217.76How to identify 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。5 r( [# j7 n# u' m7 p$ {
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Symptoms of Septoria leaf spot also start
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8 l( ?8 D* O+ E! s9 _* v& q. Ytvb now,tvbnow,bttvbon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5.39.217.760 Q, G+ c9 W0 x
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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.
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: a6 n1 N* ^( r; X* D5.39.217.76Small dark spots, the fruiting bodies of the fungus公仔箱論壇2 U( Z% G1 \' v; E/ r
7 m# K0 O: p- }% M2 Q! X; Q3 V, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
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: Y# z* B1 h, |5.39.217.76and dead. Stems can also become infected but Z, Q6 p0 f2 |' t! M
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infection of fruit is rare.0 p2 n( j9 M8 S0 \( y
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。" G5 w# F6 i. O2 o! y
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How to Prevent and Control Early Blight and
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2 T) M$ J( [0 h4 R1 U aTVBNOW 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。Septoria Leaf Spot
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Follow the 12 easy steps below to enjoy a 公仔箱論壇# P( a) ]. T8 W9 d9 r
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.8 L* J6 _0 R, W$ J+ X
$ A$ @* }7 ?4 `1 eWeed your garden. Some weeds, 5.39.217.76$ z7 _8 e$ Y ~, K9 p4 Z* f$ \
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.公仔箱論壇; D5 n' l! G6 Q7 u# u
3 s& d! q# A" @6 l0 T% b1 R5.39.217.76Rotate 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 4 c8 _ o" S; i* _" \, N
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where tomatoes were grown.5.39.217.766 S; m% }: e% E
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
4 E( R% D& u1 l' sCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your 5.39.217.763 G* V5 U5 ~7 r W# o
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plants.8 [3 L5 k" x. ?1 N& u' x
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Stake or cage plants to keep them
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6 t- X3 k& h1 uTVBNOW 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。off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and tvb now,tvbnow,bttvb/ ~3 [0 f' ~3 S) A" u& D
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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 5.39.217.76% |* M/ C' g! ]9 u6 j8 m4 J
3 n/ ~& B/ W' tspace above the soil without any leaves. Do not use 5.39.217.76# H: R& C) Y% v
0 \( F- B1 p0 D; Q: c+ W$ p1 x9 Toverhead watering.
) h, m6 e% o0 b, @+ e4 A5.39.217.76Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 公仔箱論壇3 K% f' ?0 S. X! p1 [
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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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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5 @. f* f8 d; j- m8 ^: s公仔箱論壇wet. Keep your plants happy and healthy. Weak and stressed
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( z* z0 y# ^' Uplants 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 W5 c! O7 S2 y/ L% C4 n6 o! i; Z
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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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l. V$ N2 {, @, Y. Z+ ^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。enough. If a plant is heavily infected
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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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3 v+ @8 C5 L/ M8 ?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。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 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 c' X: \; o$ j7 N& V2 `
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 5.39.217.764 I- Y9 d }8 V0 t: p' I
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Late Blight on Tomato Plants: T6 d" P: f& E" F
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato ( X8 I2 b# y! ~) v/ w4 Y0 _
" J. p/ | U/ u9 {plants in a garden. Once a tomato plant ' [& N1 A9 l( Y
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
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/ x8 P6 X H0 S2 }5.39.217.76water-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 blight5.39.217.76. J. b9 P/ b\" p* A
* N8 d p% q* P4 |6 E m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 2 ?. ?# r- i a6 U- U
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Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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