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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) E/ J* h/ q8 _- R) t) Los.tvboxnow.comcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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How to identify Early BlightTVBNOW 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 i# z6 t9 |& H) _/ H- l
5 [6 {# J2 d1 ]% ESymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 公仔箱論壇, _! x5 h6 I" R5 j7 c, W* B; _ B
9 W; c+ \" i+ |5 \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 : j7 d8 k' y1 X\" r
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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
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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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$ _0 r3 j# ]5 qHow to identify Septoria Leaf Spot
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9 b; u" w9 {- D6 \8 L; @! hSymptoms of Septoria leaf spot also start : G8 c e9 K" l2 G
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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. 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。! j; m4 \7 k- |
1 z6 o% Y. O/ w; f' |; D/ Vos.tvboxnow.comSmall dark spots, the fruiting bodies of the fungus$ c! C* u4 g1 X1 @
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 公仔箱論壇. q- T, m4 ]7 a3 a* M6 m2 p7 r8 b
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and dead. Stems can also become infected but
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infection of fruit is rare.公仔箱論壇# k6 U$ E" E/ S2 v
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" n. C' ~' g& D* @5 s$ f% THow to Prevent and Control Early Blight and tvb now,tvbnow,bttvb) t2 l$ ]/ {5 V1 a w5 a- o* W; w
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Septoria Leaf Spot
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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.
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) h( ~+ Y! Q" eWeed 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.
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Rotate crop locations. Don’t tvb now,tvbnow,bttvb- N# f9 ~/ f- E6 Z) t) K/ S- k
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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.公仔箱論壇: J9 [/ {1 ^( x2 l8 @0 w
5 ~. f5 ?& w/ { Y% U1 C/ O7 Gtvb now,tvbnow,bttvbGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb- c# [8 ]. v; E& U9 {; G
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 公仔箱論壇' y! p, k0 ?, j8 c: b& o
' V; X5 q; z: r9 e( ], T" YTVBNOW 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 ! L7 z& d& l3 F, l' }, x
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plants.
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Stake 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
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% S) r0 I( z E5 M8 \os.tvboxnow.comcages. 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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& n5 Z- |- {" 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。space above the soil without any leaves. Do not use os.tvboxnow.com( M9 I0 g G# U
0 X- G6 B, a: T: U* c6 a' Soverhead watering. tvb now,tvbnow,bttvb5 }$ m Q/ S; Y* j6 ~+ K
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. os.tvboxnow.com+ ]0 a6 q7 t+ x: T5 D8 \2 d. h& O- K; q
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 # Q3 `& P/ {: i ~0 l. Z
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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 2 _, k9 o) x3 I2 u
5 D6 y, Q u, U3 z2 ?wet. Keep your plants happy and healthy. Weak and stressed : P\" m. A9 z1 u* F
2 B, f; k* w3 R K5 B1 @7 P1 S9 }tvb now,tvbnow,bttvbplants are more susceptible to disease.
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/ \9 |* v2 j9 L公仔箱論壇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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enough. If a plant is heavily infected
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9 B0 c% D0 v+ m% U6 Q公仔箱論壇, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used & C. ]* I$ l" a8 a- e+ K& F4 c/ b
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to remove diseased leaves should be disinfected before being used on a different plant.* N0 ?3 g/ W( h% x# Z
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try ( m" H) M, o9 ^; Z
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GreenCure.
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Late Blight on Tomato Plants
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. n6 Z2 _' F0 l0 Z, W7 [& h公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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* `$ v e4 k0 p" h0 Y) x% t7 hplants in a garden. Once a tomato plant
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1 Q3 g) j/ c' u" p" G% G/ f# zis 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( @) J. @6 c% ~& x
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and os.tvboxnow.com6 [$ l/ g- L- F. S
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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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