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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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! u6 N3 `' m# F( t% \8 ?tvb now,tvbnow,bttvbcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.( O! h8 d4 E) Q* d2 n# ?
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How to identify Early Blight
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 5.39.217.77:88986 e; S. B, l2 a- A9 B8 e" q

& c: ?8 p8 F; _+ ^  L9 C- A+ p5.39.217.77:8898newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
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in color and form concentric rings, or a 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。\" I7 c+ x' v\" w  y' K

9 k. v4 }) Z2 ^7 L% nbullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, . S. K4 J5 y2 v
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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.3 T5 P, Y  n9 U# l4 y; P
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How to identify Septoria Leaf Spot
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: E+ \$ |5 o4 X9 a! RSymptoms of Septoria leaf spot also start 5.39.217.77:88986 J, x, c/ Q; u+ d$ ]
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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 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。8 t- E& K! H8 [( V( c

  e2 q' z) l4 Qshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 5.39.217.77:88986 D2 A- h$ N' l3 T* z

# f. D; C  k1 N3 j+ T; btvb now,tvbnow,bttvbSmall dark spots, the fruiting bodies of the fungustvb now,tvbnow,bttvb1 d, k, U( J8 w# F% U0 k

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 5.39.217.77:8898( x" j3 x% N! D2 J& }0 t# a
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and dead. Stems can also become infected but % d8 s9 y  D+ I
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infection of fruit
is rare.
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$ g1 J; Y; P1 n* `5.39.217.77:8898How 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。/ p  z: V' |1 X5 f- H\" t! \
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Septoria Leaf Spot

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" ]: g5 y, h. q, h8 lFollow the 12 easy steps below to enjoy a
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& x* [, m! V4 U& P) _long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
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Weed your garden. Some weeds,
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# i1 @' x' ?% L+ i8 {& Xlike 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
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  ?% J$ s( W* O1 mplant 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.
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Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
0 a- O% p5 ^; W8 v/ qCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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( ]! E" q. h1 ~9 }5.39.217.77:8898fungus from the soil to your 1 w" ^: O* i" V  m6 E' O
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plants.
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2 Z! l+ P: R6 E, sStake or cage plants to keep them 5.39.217.77:88983 g6 G# a  K& V; l: i; f. Q- P
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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 公仔箱論壇) ~, Q! B; M3 X
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space above the soil without any leaves. Do not use 7 a& {/ G2 C3 W- q
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overhead watering
.
) U' j4 E' z" fTVBNOW 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.
8 N2 ^3 k  _5 w! v7 v- {# EConsider 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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( e+ S5 m; L) h  \& S1 A. Stvb now,tvbnow,bttvbfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 0 @6 i8 k3 K: S; f0 F/ {/ j
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wet. Keep your plants happy and healthy. Weak and stressed 0 k% `- H4 l% Z6 [' _- m3 m\" j

8 a* L0 d4 t\" p7 [tvb now,tvbnow,bttvbplants
are more susceptible to disease.7 A( ]  r6 d, d6 N% n# i0 [

; R& J5 i: {9 |4 f" a/ 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。Remove and destroy or throw away diseased leaves, both off the tvb now,tvbnow,bttvb- \\" R% L/ L4 m

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plant and any that have fallen onto the ground. This may help stop the spread if caught early
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: M1 [8 k; V" J$ x8 jtvb now,tvbnow,bttvbenough. If a plant is heavily infectedtvb now,tvbnow,bttvb# M  n5 ?$ e( d& 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; c5 T& U5 d% @& K6 m! A- K  y# Q
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to remove diseased leaves should be disinfected before being used on a different plant.
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: ]; x, H& f" W9 W+ _Spray plants to prevent and control the
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: S- r! p$ g' n9 `5 {  P& n: nspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
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% I5 g5 a" y: H# wtvb now,tvbnow,bttvbGreenCure.公仔箱論壇. m/ X3 P1 E; F" B/ v

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( @( T8 o! j# a+ `' a% Q8 j. KLate Blight on Tomato Plants' M! f% c% f4 v9 N5 ?

# x. y: l: {$ R. e: {; J  P8 Itvb now,tvbnow,bttvbLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 1 C2 N( F' ~  C4 {; V

( Q1 e  q. k+ A( {/ o) L' g" jplants in a garden. Once a tomato plant
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$ @* v8 B! ]  n7 _- E9 D5.39.217.77:8898is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇1 a$ N9 {2 i# r- m1 X7 v) w$ j

) ~. D$ G/ t% d/ Q' bwater-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。% u! s\" H+ p$ U

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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and ' {* ?( A, L, }! d$ Q
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Septoria leaf spot infections will also help prevent late blight infections.




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