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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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1 L6 p  H9 _' a# f: P公仔箱論壇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" s( u3 J2 o$ E
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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
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7 R' S# F- s7 }' W2 A$ fnewer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown ( u3 a+ d% B. N. M9 W5 W( M2 f
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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。2 _\" s1 z1 P! e2 I* h
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bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, $ ]6 Y. ^+ H" y* ~1 |* Z
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leaves may fall off. Extensive loss
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( @$ k! M6 |1 S2 ^www2.tvboxnow.comof 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 Spotwww2.tvboxnow.com+ U6 u6 d4 }9 }' p% L+ {
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Symptoms of Septoria leaf spot also start www2.tvboxnow.com5 ^' A$ ?( V9 k; h, N/ j

1 f: t& Y: w4 P; _' Ctvb 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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- y+ b" G" C. W4 j$ E" r# Ywww2.tvboxnow.comshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 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。: e. y. z- T3 G- R7 X: j/ P& e

) Y: x# Z1 \. u( g- l1 |www2.tvboxnow.comSmall dark spots, the fruiting bodies of the fungus+ A\" o# Y! U  v* x0 f$ w  D

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 9 e, @, L6 _( i7 B
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and dead. Stems can also become infected but 公仔箱論壇+ o: y2 M0 i' U/ V
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infection of fruit
is rare.tvb now,tvbnow,bttvb5 ~- g# L7 h4 |9 G6 S1 w8 H

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' R8 ?$ G# ]! U0 a/ {1 j- |tvb now,tvbnow,bttvbHow to Prevent and Control Early Blight and 6 m$ ~  Z+ M( S

% b. V. Y4 D+ _7 }公仔箱論壇Septoria Leaf Spot
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Follow the 12 easy steps below to enjoy a 4 z6 k  b5 _  Y! r1 \
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long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇7 q5 g! k  C- ?# w) ?' t6 S' A

+ l2 Z% D7 ]5 a: P' q, s5 ?  V7 J+ f: YWeed your garden. Some weeds,
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% a1 t4 \( p3 T+ k5 Y/ b1 p0 U: c$ O公仔箱論壇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
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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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) j! [2 x- K" vwww2.tvboxnow.comwhere tomatoes were grown.公仔箱論壇' p( a. e: l1 m) B8 O# Z' I

: w. Y5 V2 X8 B, 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。Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
9 _" ~$ B& u7 N, yCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of . r) `6 v/ B/ d. X2 O

* }. p9 E1 ^* v% stvb now,tvbnow,bttvbfungus from the soil to your
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plants.www2.tvboxnow.com6 P& o+ E1 K% A
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Stake or cage plants to keep them
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$ |. l8 _% p& q  J& [, V# [公仔箱論壇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
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space above the soil without any leaves. Do not use
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overhead watering
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Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. * Y4 v: l8 D% \$ C3 N
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。- U: Z1 z1 l/ n& K7 ^% o4 f$ w% V

! \% a& G6 y% m. t1 d; N2 g9 Twww2.tvboxnow.comwet. Keep your plants happy and healthy. Weak and stressed
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plants
are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the www2.tvboxnow.com7 \: Y8 E\" S! {

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plant and any that have fallen onto the ground. This may help stop the spread if caught early 7 s! D& W' G3 C6 W

$ O) d3 B8 M- v9 z- ^2 hwww2.tvboxnow.comenough. 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 www2.tvboxnow.com5 B  L2 M8 ?2 a. a) ?' N

+ v+ o; I5 w; S8 Ito remove diseased leaves should be disinfected before being used on a different plant.
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Spray plants to prevent and control the tvb now,tvbnow,bttvb; @* Z3 C# S, a& B( K. L
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spread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
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. c$ ^4 X5 a- k% E0 ?www2.tvboxnow.comLate Blight on Tomato Plantswww2.tvboxnow.com( o3 B9 g( S# }! t: {6 l
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Late 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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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 blight公仔箱論壇9 v: N- `: l/ B$ y3 v  P) S

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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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Septoria leaf spot infections will also help prevent late blight infections.
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