Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but % `, `- {, C( p% m8 {1 ]
$ }, m. i: C% B/ ~- D( w% 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。can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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- r. M# \9 H. ?How to identify Early Blighttvb now,tvbnow,bttvb& v. S" P5 K7 z
. g5 @: e# d: q! S$ w+ ^Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to
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~ @7 U! n+ ?8 Xnewer 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
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 5 M2 d# q! I7 L# i5 y* H
4 [8 J2 O. h% Z1 g( XTVBNOW 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。leaves may fall off. Extensive loss
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# R2 ]5 d! O! z2 Z公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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How to identify Septoria Leaf Spot
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Symptoms of Septoria leaf spot also start 1 Q. L: C. Z. P/ b
, n, C& \ O! T; T2 v- M! L) @公仔箱論壇on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 3 X8 } y+ A$ L/ A
% G. h$ C& ?" j# J" s- ~! Ftvb now,tvbnow,bttvbshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. : M5 K% R& e/ Q f1 [! J! Z5 l
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Small dark spots, the fruiting bodies of the fungus
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1 m+ \# l% d' M7 o/ ftvb now,tvbnow,bttvb, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry www2.tvboxnow.com' t) y- c& m( E7 W* H; U
. f3 j5 g& ~% p* Y/ N, W; }/ K: ?www2.tvboxnow.comand dead. Stems can also become infected but
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infection of fruit is rare.公仔箱論壇% U+ x. k" m$ m5 O( J X) R
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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 W# O0 x% q/ |" |$ M/ e
How to Prevent and Control Early Blight and
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% W9 g& b) T; X. D% ]/ nSeptoria Leaf Spot
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' f: _- q; r- pFollow the 12 easy steps below to enjoy a
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9 D+ a5 A3 z5 H9 d8 c6 c0 Z- Wlong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds, 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。6 h3 A* Q1 b4 [ S
公仔箱論壇5 Z/ L; f5 ^# Q: r, N
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.www2.tvboxnow.com" l8 k) P; B5 ~( O/ r
+ C; [; n h; Y6 h" |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.: G6 I2 N2 S# S8 t5 T& q
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
2 m- b& C5 P% ~7 u0 @/ J+ }: j OCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
- L, Y* @, P- LTVBNOW 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。tvb now,tvbnow,bttvb3 V: _4 i& b m g% S
fungus from the soil to your
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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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cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 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。: k# g: B! I& j! Z+ }( m
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space above the soil without any leaves. Do not use
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* [2 `& X+ P# q: |. S, B/ roverhead watering. 公仔箱論壇' Y3 J/ Z1 d1 J4 M2 d; |4 i
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
* K+ B5 Q% z. c) O5 J1 F& ?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
: Y4 h5 B9 Y4 o. 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。
! S. a1 t/ o4 e4 s$ V1 }fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are tvb now,tvbnow,bttvb O* s$ l7 F1 {2 p) k5 O+ i- [
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 N( T& K; b2 ` H9 T
wet. Keep your plants happy and healthy. Weak and stressed 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。 s% c2 X: f/ O) y. n
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plants are more susceptible to disease.tvb now,tvbnow,bttvb8 q" e2 Q* `3 r( _
: ^4 m3 C" n; qRemove and destroy or throw away diseased leaves, both off the www2.tvboxnow.com; p- V6 B5 ^0 L8 c! w. K, i
5 m' x$ S/ m i+ |\" I, m Ztvb now,tvbnow,bttvbplantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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- G0 n4 A0 w4 o( P- e3 ~www2.tvboxnow.comenough. If a plant is heavily infectedtvb now,tvbnow,bttvb\" a& f) |6 q! f4 Z
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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.2 E6 P4 a9 O6 c5 g
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Spray plants to prevent and control the 3 [- o! v7 Z2 c
\" P) v( r' T0 b Ytvb now,tvbnow,bttvbspread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
1 X& W! \3 U- g& l O3 X& V e% M" b公仔箱論壇
) o5 ?9 R8 |7 k S- T公仔箱論壇GreenCure.
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Late Blight on Tomato Plants1 e; J1 Y: ~; a7 A
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato www2.tvboxnow.com6 [( |$ R0 ]. z0 R; \+ ~2 C
1 P1 q$ j; Z$ w! Q' Qplants in a garden. Once a tomato plant
4 `) e( ~- G- l4 y) X7 u) h% ?tvb now,tvbnow,bttvb
! P; H8 t. W$ l( ^1 s: G公仔箱論壇is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small,
# b' A E5 Z7 ~# ]公仔箱論壇
$ o, u+ ?! r6 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。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 - S% B; v8 t! B1 ^
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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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