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[生活小百科] 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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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb& c2 d) y1 M9 Q# B: k$ }# Y

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2 Z3 g9 O3 F1 h公仔箱論壇How to identify Early Blight
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2 H0 Y6 p, Y7 H. H) \公仔箱論壇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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3 V2 q! s% i9 ?8 R公仔箱論壇newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 5.39.217.761 F4 L6 n) w$ f7 t4 ]1 Y
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in color and form concentric rings, or a tvb now,tvbnow,bttvb) S5 U. B) ?/ w\" ?. N
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bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb: s: J# g  C) g& S0 j) e" r1 X

. M9 e+ x4 O1 j! ytvb now,tvbnow,bttvbleaves may fall off. Extensive loss tvb now,tvbnow,bttvb- A! H* A: O0 w
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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 w" f2 B# D1 t% T, t& t3 `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。How to identify Septoria Leaf SpotTVBNOW 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  j/ U( g1 R2 |" M8 ?
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Symptoms of Septoria leaf spot also start
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. E. V3 r7 H+ N) Y# k8 L) }/ stvb now,tvbnow,bttvbon 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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) Z& z0 D: `& e9 i+ m2 s公仔箱論壇shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center.
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, j. y2 Y  }6 s. C; g5.39.217.76Small 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 tvb now,tvbnow,bttvb& j+ C1 _, o( S. i4 E  _- y- j! P
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and dead. Stems can also become infected but 9 y5 d) v. N* G. n% t
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infection of fruit
is rare.1 ?+ o! x4 I# @# I. i1 T# r

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- r" M- n9 C! ?& {$ |# W/ Ltvb now,tvbnow,bttvbHow to Prevent and Control Early Blight and & a) r- s8 m: X4 L2 O6 Y5 a7 T: i

' l+ x! d+ {; x2 J; C8 d- _$ g公仔箱論壇Septoria 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.
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1 ^/ l4 P# y$ y* L公仔箱論壇Weed your garden. Some weeds, 5.39.217.76+ G- ~; U! S; P; v6 M

: n! A! k: G1 e* V$ u4 ]2 e: mlike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.tvb now,tvbnow,bttvb+ o6 k- j: y- ?! M8 R* _" s
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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 0 [6 {, e6 c8 V4 H  X1 T

; Z4 M3 @; E# Y4 f5 d2 {where tomatoes were grown.5.39.217.76& |* t: ^0 t+ a3 v$ Y1 N% j

' r/ X! q4 W0 Ftvb now,tvbnow,bttvbGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
9 h* K, p8 g2 p8 N/ ?+ o# VTVBNOW 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
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( `8 W1 g; _6 ^7 X) _fungus from the soil to your 公仔箱論壇: q4 S' q2 m( Z& D8 H: v
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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 tvb now,tvbnow,bttvb# p: \6 b+ h+ ~- U" l. W2 e
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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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/ A3 p, e  h6 Y4 O* z* 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。space above the soil without any leaves. Do not use
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overhead watering
.
- W$ I$ L; B$ O. T9 }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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
- F! }( T) N1 k, ^4 Y* R/ u+ \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。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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fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 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。# j6 w9 G5 ?* d1 y0 `9 T& k
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wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇) l# b( p( R\" ~9 w$ B' `/ l
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plants
are more susceptible to disease.公仔箱論壇& r5 x3 X0 [% d: d- `. i9 s3 X: P
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Remove and destroy or throw away diseased leaves, both off the 2 t/ k8 A6 y& U' Z
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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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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 , X. U2 t* f9 d
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to remove diseased leaves should be disinfected before being used on a different plant.2 Z( L- y/ g% C" O4 ^6 r; G* f  H6 @
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Spray plants to prevent and control the 公仔箱論壇4 S5 v5 _! I' X7 k
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spread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
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' [  [* q0 E* _+ P! Y# g公仔箱論壇GreenCure.2 n) Q& m7 Q, K+ C$ V

  m& A) f: i9 n$ ^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。
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 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 a9 [3 T, @4 i- X. r- A
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plants in a garden. Once a tomato plant
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' d$ K- F2 O) K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,
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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 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。* `- s) O! ^# O
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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1 }1 z/ R) d0 f0 [  `. O/ i公仔箱論壇Septoria leaf spot infections will also help prevent late blight infections.
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