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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.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。+ i2 N4 F& k  r$ d6 k
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How to identify Early Blight
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$ K% w* ~' ], I; Z; ^+ f9 iSymptoms 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 www1.tvboxnow.com, F6 S$ D! [% }1 Z

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, as they grow. The area around the infection commonly turns yellow. As infections grow,
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leaves may fall off. Extensive loss tvb now,tvbnow,bttvb4 M3 E' t4 l, u9 P1 F5 A) ^
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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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How to identify Septoria Leaf Spot
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: i) V- x4 y  m$ \* M) Y公仔箱論壇Symptoms of Septoria leaf spot also start 公仔箱論壇0 [. J' R' A" R5 o, g

  R( }6 w9 y% m公仔箱論壇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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shape 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。0 x; Q/ G! B4 e/ n. o6 L

; `! S: [# s7 J" e( y& NSmall dark spots, the fruiting bodies of the funguswww1.tvboxnow.com8 U0 p/ s; H' B5 {0 I$ E6 Q( F, p. }

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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry $ J7 h! p5 j3 e) a' J: B
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and dead. Stems can also become infected but : F  Z( o\" `6 H. T$ m9 N% J; V0 m

) a1 q; l1 w& zinfection of fruit
is rare.
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, F( m' f, S1 ?3 @( VHow to Prevent and Control Early Blight and
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Follow the 12 easy steps below to enjoy a
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long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb+ `- e4 n) e# l

/ N9 V$ f+ w& ~. jtvb now,tvbnow,bttvbWeed your garden. Some weeds, tvb now,tvbnow,bttvb2 o' |; D% S: l0 a+ V4 m) R& \( ^7 w6 n
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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
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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 1 v% J' W# X* J: R, L5 X
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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.3 E- Z  I( p4 @5 f0 Y
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 公仔箱論壇! m/ r8 Q3 O% X- r/ \
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fungus from the soil to your & J4 l8 {( s; a" d) t2 w" S) X

# `6 q- N) H# M7 G% D" ~plants.www1.tvboxnow.com4 _) M% Y3 S: z' w& e) H: u
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Stake or cage plants to keep them tvb now,tvbnow,bttvb  E6 W8 o+ K$ }- U3 V3 T) E8 F$ P

# o& q% N5 E, stvb now,tvbnow,bttvboff 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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4 O6 F# r2 J5 d3 I( L- ?www1.tvboxnow.comoverhead 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.
) v+ x/ e" M9 J% wConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow tvb now,tvbnow,bttvb) {. j. V& b# V, p2 q/ {1 [

( Y0 I* U/ J; O. ETVBNOW 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。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。4 X8 e( X% V" g2 {& ]0 b) a

9 B8 B4 {) r  y公仔箱論壇wet. Keep your plants happy and healthy. Weak and stressed 9 o; x+ l2 _5 ^* q1 P  r
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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
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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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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 公仔箱論壇9 x' o) S; M( ]& W  Y

$ y* F3 C! R5 y/ V9 x+ JTVBNOW 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。to remove diseased leaves should be disinfected before being used on a different plant.5 ?6 C0 z" M" ]; y

/ }( X3 {1 G! p0 pSpray plants to prevent and control the
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  I# j+ c. H, h\" g. Bspread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try $ Q; V2 W! f3 s2 i% W* Y) N0 G
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GreenCure.2 u) C7 m3 a, E. v- Q
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Late Blight on Tomato PlantsTVBNOW 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。: G9 g7 I6 }6 t9 i
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb2 g* d3 Y' u7 C6 x7 @
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plants in a garden. Once a tomato plant   v- ]% B8 e" b( \0 P

' K5 ~5 s( z4 X1 b( D! }7 f2 v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, $ s: ^/ d" c0 T4 h) h$ I- o

9 w1 S0 P6 `0 [7 {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 blight0 V+ b7 j# N9 c2 [

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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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