Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but tvb now,tvbnow,bttvb" q q; V% n' W; t! ]
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。' a1 k( M6 g' _% J7 s# \( s
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.5.39.217.76% ]: _; h6 B4 S/ H: U5 C
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0 V- D$ @& P; t3 j% |# M( mTVBNOW 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。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 " Y# ~8 \* U+ x1 ^5 C/ e
1 z- w& U9 s, @+ v7 S7 ftvb now,tvbnow,bttvbnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 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 g, W( O/ J0 i2 b/ y1 G; h
1 L4 |0 m) g9 W% u( e) b; HTVBNOW 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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7 Z- g6 r4 O) B公仔箱論壇bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 5.39.217.762 A% Y g3 @1 m" \ ]3 p
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leaves may fall off. Extensive loss
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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) W. D' A5 `# n" `公仔箱論壇How to identify Septoria Leaf Spot
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) Q7 i: L. `8 u! w* p8 v6 c u1 f y公仔箱論壇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
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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. ) }" ^8 P' `7 ]8 H4 V3 e5 P
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Small dark spots, the fruiting bodies of the fungus8 p3 b% y! ]9 |/ l0 h
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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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and dead. Stems can also become infected but 公仔箱論壇3 o8 d5 q- x. |( f; N( W6 V
) z1 z* A7 v' L+ |- A7 d5.39.217.76infection of fruit is rare.
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How to Prevent and Control Early Blight and
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! |! J0 ]6 \6 n4 UFollow 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.( N% ~* H) B7 e1 a2 z: j
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Weed your garden. Some weeds,
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.% |# B- D2 B" v# R1 [% h
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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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; q2 _, F+ K3 S' M8 Q! Fwhere tomatoes were grown.2 h' q1 a, E' O. H6 V5 @- f
6 w, ?% Y* {( M, g0 ~1 {. kGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.5.39.217.76 |' g6 n$ @, l1 y6 J- I% M
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 4 t: _: @& h3 v1 p1 l
w7 `. t1 S; J+ x& }- P7 D7 T" E9 Vtvb now,tvbnow,bttvbfungus from the soil to your
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6 u, c: T; }+ B9 y公仔箱論壇plants.
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Stake or cage plants to keep them
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2 x% |4 |% B. U8 ytvb now,tvbnow,bttvboff 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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8 A- |9 k9 u8 V; }8 G! w* @8 G2 B5.39.217.76cages. 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+ e q, @. u) s4 M; b. @# F# ~9 s5 U
+ F7 N. S6 b5 f' z* Etvb now,tvbnow,bttvbspace above the soil without any leaves. Do not use
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overhead watering. 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。1 T1 T2 H, y0 e- R) v; {
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ' A/ Z" m$ U' D0 {
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 5.39.217.76* J/ j* N4 ?# D" W. u. O; d, p
5.39.217.762 a2 Z% I) @- x# F1 a
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 6 r3 Z1 q( S8 t\" S1 p
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plants are more susceptible to disease.
+ G/ L* E$ e2 j0 ?tvb now,tvbnow,bttvb
. ^; Y+ A" c! q/ BTVBNOW 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。Remove and destroy or throw away diseased leaves, both off the ! z; Z( s$ i* m
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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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# p2 E! | K8 ^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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to remove diseased leaves should be disinfected before being used on a different plant.6 U! L' A8 K' O2 Q
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Spray plants to prevent and control the
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8 P$ w. w. v C2 s4 J h6 T1 c9 W3 ~tvb now,tvbnow,bttvbspread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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GreenCure.( J7 p6 L" U, R
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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 ( r. u6 K z7 u0 w `( x
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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,
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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
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and tvb now,tvbnow,bttvb9 C2 ^ q4 }) \1 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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