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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can 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 Blight& E/ G/ T7 z4 b, m- f
" s0 I) W3 W+ u- W, LSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to
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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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in color and form concentric rings, or a / f: I: H- K6 {; B: l
# P! P2 g B0 a! _3 T! {bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 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。# u0 |; L1 n2 o1 x2 l9 _( l
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leaves may fall off. Extensive loss tvb now,tvbnow,bttvb% F, c" Y5 g" {0 x* ]# X- b
, U! ]1 t3 E6 T0 p+ v1 b* Nof 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 5.39.217.77:8898) p% T! a% j, u2 \9 E0 o
3 K) h! V( Z% s, [# Jon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 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% }+ u6 n" L9 \+ K6 V
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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. ) h# `3 T& n( K: B) k4 D
- g2 f* y4 y' L( j/ D, S& K8 jtvb now,tvbnow,bttvbSmall dark spots, the fruiting bodies of the fungus
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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
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infection of fruit is rare.
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" A4 E1 ]" P7 F" t6 U/ d) A, T5.39.217.77:8898How to Prevent and Control Early Blight and
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+ J% y5 R! i\" DSeptoria Leaf Spot& H6 g6 p) y, T3 ?0 F9 ~" n
0 E; K c$ c/ @+ u公仔箱論壇Follow the 12 easy steps below to enjoy a / K) B$ P }3 k3 ~
6 Z5 L( Q$ I2 [+ }( s1 B\" Slong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5 C& C6 D9 [7 {) N3 l
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Weed your garden. Some weeds, tvb now,tvbnow,bttvb" a4 K* O4 d G
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like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.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。: o+ G2 R; l+ E h
8 |2 K% z- y: T6 ^) o4 x5 q$ `) b5.39.217.77:8898Rotate crop locations. Don’t 公仔箱論壇5 x3 m" v4 [/ Y" L4 s1 P
2 i+ g- C6 ^; x2 f$ u% Ktvb now,tvbnow,bttvbplant 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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5 F7 X* F7 U# k- T' [) v" ^tvb now,tvbnow,bttvbwhere tomatoes were grown.5.39.217.77:8898 c4 X4 s* U1 o* O7 C% N2 u3 H/ Z
" U# l6 B3 }# ^6 T3 E% Q, gGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
" p* a/ [- d2 nTVBNOW 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。Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread 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。3 N; ~' H1 C* Y. e% J
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 b* v: n6 G' [( o/ |% h3 e
fungus from the soil to your
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; w0 a+ p/ Z, y" x) X% t0 r5 b; splants.
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Stake or cage plants to keep them 公仔箱論壇8 U1 w$ o8 R) S0 T$ \
2 ?" y: v/ C% C: m5.39.217.77:8898off 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
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space above the soil without any leaves. Do not use
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overhead watering. tvb now,tvbnow,bttvb% F3 ~5 V9 g7 M" y: l9 H
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
" m' P5 _' Y% P; i% n8 B0 ]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
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O) s( \ r. _& ^& Kfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 0 ]% a" T- `( F
7 h: r7 V" z/ Y公仔箱論壇wet. Keep your plants happy and healthy. Weak and stressed
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plants are more susceptible to disease./ Y7 r3 H; t. y S0 ~1 C
( x: h& y, t7 ^- H/ O. \8 U5.39.217.77:8898Remove and destroy or throw away diseased leaves, both off the 公仔箱論壇8 v/ v& `+ d. X\" T' b) G\" \
3 e# V3 }% {7 v' d' D* W公仔箱論壇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 infectedtvb now,tvbnow,bttvb& x' J Z1 Y. [2 b5 I. h) e4 r
7 d. c0 c5 p, g! C5.39.217.77:8898, 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.& D6 ]9 h; j. F% E4 y
3 r( o# T+ \. N$ k$ u3 y4 j' U公仔箱論壇Spray plants to prevent and control the 5 v+ E, D/ W: p) \6 G
5.39.217.77:8898& e$ T- K7 J4 D, H5 V
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try
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GreenCure.
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Late Blight on Tomato Plants公仔箱論壇4 F4 Q% e% {4 X* R1 q- S$ @& v# I
0 W$ X9 m _% d% Z% g$ Ltvb now,tvbnow,bttvbLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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plants in a garden. Once a tomato plant 公仔箱論壇3 Z% X3 g# d u6 b" O7 k
5 j' Q$ b5 z- ?( ], f* f: _tvb now,tvbnow,bttvbis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 1 Y1 M, }3 ]) \- P, c
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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 blight5 E h0 q4 u& O& H2 r+ Z) z% O
( [4 b5 f+ b5 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 infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and ' n) G- @; o( N( M' q4 _
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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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