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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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6 }+ w7 u1 V5 K. A+ e* Z公仔箱論壇can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.公仔箱論壇3 v+ z+ N6 v1 L" d9 R. R, R" J

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: Q0 M0 M- t/ j$ u1 r; \5 Ctvb now,tvbnow,bttvbHow to identify Early Blight
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; Q% C$ E! t' I) E# {" u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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newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown os.tvboxnow.com3 {" q/ P, `; _5 e
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in 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, os.tvboxnow.com* l) i5 x5 e/ P0 X7 d

" p$ a+ L) j' p) a5 e- Qleaves 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.+ N9 N# g# S# P8 e! ~# ?

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How to identify Septoria Leaf Spottvb now,tvbnow,bttvb& i+ S$ U) I; }4 g: X& c, u* H4 |
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Symptoms of Septoria leaf spot also start
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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 os.tvboxnow.com" m& \8 L6 ~$ n$ y, i

: Q" C4 E3 L* vshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 公仔箱論壇* p4 t1 [/ ~2 G+ B& w
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Small 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 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。% Q( x: V9 S0 r% \
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and dead. Stems can also become infected but 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。* v+ D# ]\" E3 Q- q3 {

7 d( P  C7 P( E0 i4 \% F4 xtvb now,tvbnow,bttvbinfection of fruit
is rare.
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How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb+ c6 v( _& w% V
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Septoria Leaf Spot

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( g5 a0 ^5 ?& o- b7 B3 _Follow the 12 easy steps below to enjoy a 公仔箱論壇# y8 b% G1 N5 C* }* e* G: m
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 @! j, R/ G. t\" L6 s\" i' O& |2 `
long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.tvb now,tvbnow,bttvb) t: `5 h" l: P

8 J0 `; {2 a' H6 L, M/ ?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。Weed your garden. Some weeds,
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6 a( ~$ }- O7 b" Ros.tvboxnow.comlike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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" u  x: [) ?1 {! {( q, s4 X  QRotate crop locations. Don’t
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0 K) X& B3 \  W. J" D0 c* W' \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。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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where tomatoes were grown.
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- J( u3 a1 T0 u4 b4 h- X2 z9 N; rtvb now,tvbnow,bttvbGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.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。$ i+ p9 m: F2 G: T$ Z
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of
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fungus from the soil to your
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Stake or cage plants to keep them os.tvboxnow.com; l2 O. G/ q3 V0 o
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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 os.tvboxnow.com' m( Z) U' C  o: f: H: Q1 Y

2 |" z' |+ D# z9 S2 rcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of tvb now,tvbnow,bttvb8 U0 t; \% l! @; h7 }
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space above the soil without any leaves. Do not use
& T0 M. ?$ h7 m' A7 h( R+ x5 r公仔箱論壇( U) l9 h2 E2 j
overhead watering
.
: Y% D% \( W. Y, R3 S% ?& I6 r公仔箱論壇Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. tvb now,tvbnow,bttvb1 `! S% t! }, j. K
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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/ p! ^* X2 y) i0 ?( W$ CTVBNOW 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
& y. N7 i1 u5 P9 g) Ytvb now,tvbnow,bttvbTVBNOW 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 v, T. g: N; [9 F' p, A1 W
wet. Keep your plants happy and healthy. Weak and stressed
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are more susceptible to disease.tvb now,tvbnow,bttvb! i( n: K! U) l

2 ?+ ^& Z+ m: w9 B! K/ b& STVBNOW 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
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plant and any that have fallen onto the ground. This may help stop the spread if caught early 6 D5 b. _9 O; k# |, T

( G' q8 \6 H6 t) r( Z/ B  Z- `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# J4 d: U: [$ Z1 p
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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 tvb now,tvbnow,bttvb' B( }( `7 C4 E/ m
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spread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try 公仔箱論壇5 b; i! }) ~3 c! m  r+ R& G

3 T  G  R5 A3 b+ PGreenCure.
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Late Blight on Tomato Plants
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato " y% U, p, I, N6 a
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plants in a garden. Once a tomato plant 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。% q3 K1 p5 b; P3 M- T
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 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 t& q! u$ i8 c

7 d) e3 `2 D# G, u) B& E2 i( gwater-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: g, L; Q% i, o2 _# [4 y* 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
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Septoria leaf spot infections will also help prevent late blight infections.
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