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標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁]

作者: 6t6t    時間: 2019-4-13 05:03 PM     標題: Early Blight and Septoria Leaf Spot on Tomato Plants

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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2 F* s9 X8 ?4 d& G  M8 ^0 X9 zcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
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' ]' c1 y5 R" m, }公仔箱論壇How to identify Early Blight
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0 x$ ^" o4 a) n# e1 Y3 [tvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to
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1 H5 Y  \. ]) ^! w6 X. k5.39.217.77:8898newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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% O! g9 F) L) W- `5.39.217.77:8898in 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, 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。0 ?& s7 T  H! A; O$ x

3 V3 o7 c. i! Z8 P6 ]; Sleaves may fall off. Extensive loss tvb now,tvbnow,bttvb, Q3 |+ e4 ?8 {

% ~5 V$ [. y! p, F3 t+ ]" pof 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 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。/ M) [7 _/ M7 B; N( i: \
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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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8 H9 L( j& n3 _3 Dshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 5.39.217.77:8898- n0 Z* T5 _7 w1 I" n  j" @
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Small dark spots, the fruiting bodies of the fungus公仔箱論壇+ w5 `' m3 T+ o1 q7 B) b

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 5 |9 r: c# t3 u( Q
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and dead. Stems can also become infected but
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is rare.5.39.217.77:8898; Y) b/ Z1 `1 p0 {0 Z7 O

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0 x7 e1 w6 l4 A& |: C% C8 \公仔箱論壇How to Prevent and Control Early Blight and 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。\" R% C$ d) |. F  {\" s6 Y4 L

5 U6 M# n/ x\" h% f( x1 XSeptoria Leaf Spot

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Follow the 12 easy steps below to enjoy a
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of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇! @- Z$ W6 J7 Y$ q: U; J1 Z1 ?
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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。% S0 q, f0 C0 E! _! d6 \8 s$ O
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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 5.39.217.77:8898) T5 _  |0 i2 E  F
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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 # O$ B4 y8 S1 o& y
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where tomatoes were grown.
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4 I3 x* s$ O# ]6 r, X! vGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
# K- V4 Y* O1 Q. pCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb: x# Q, H$ g4 G% S2 U% f; h- T
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fungus from the soil to your , w4 y- v, i& C+ m( K0 u
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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 7 }& I* E1 h5 r" s- e
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space above the soil without any leaves. Do not use & u1 v  b% N# }1 P\" H/ [

' X* a1 O. C/ ntvb now,tvbnow,bttvboverhead watering
.
4 {! w8 ~, c- G& X1 @5.39.217.77:8898Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
7 w2 }& M$ h" f5.39.217.77:8898Consider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow ) d6 f/ r2 ^1 V4 d
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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 tvb now,tvbnow,bttvb, p5 n0 M8 v1 H4 b8 n

, ^6 L3 b& E; t0 Y4 U' ~# Mtvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb* s8 O+ [% t, |0 g

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are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the
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plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early
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! F3 O- y& {" _+ J, D" P1 btvb now,tvbnow,bttvbenough. If a plant is heavily infected5.39.217.77:8898( d6 u  \. n* j7 C6 S
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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 公仔箱論壇9 G& m5 o0 c# m+ F: q( z5 Z
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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
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spread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
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Late Blight on Tomato Plants8 g/ [5 F8 ~. j' \6 E

  |- L% Z( s3 |tvb 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
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3 S" z, `" w& z' r0 W( H5 l% _5.39.217.77:8898is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, tvb now,tvbnow,bttvb7 L4 f1 q. Z4 y

/ |* c+ [* e/ ~: q* h& W& R. L5.39.217.77:8898water-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 blighttvb now,tvbnow,bttvb9 E6 e. G/ N2 X% ^8 J

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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇$ _3 g) i, r2 f; I, O/ f: T. {

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