[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 ; f! C. O- r+ X3 f! u4 {8 d

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.% s/ s# U5 p* {% W1 Y! V' g

, v# G( j5 B' C' X* `6 l
How to identify Early 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。+ ]( A, ~, L: `5 j1 B, h
" ~1 i+ o+ A7 h& U& j; r2 u
Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to / W4 E! |2 T' B9 W3 G" }( S. z5 y
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。9 ^- k8 w* X" ]; \& K, T
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
tvb now,tvbnow,bttvb' |- ~: [6 J. u: F! ?7 Q
in color and form concentric rings, or a

bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇; [* c# d- l4 Q$ `  }5 y4 K
tvb now,tvbnow,bttvb+ b' S* P  A$ u! E4 }2 L4 t7 o; R
leaves may fall off. Extensive loss os.tvboxnow.com5 \4 l" H0 Y+ w

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
公仔箱論壇5 c( Y) t% L+ ?0 `
公仔箱論壇: n  ?, m* m6 [5 G
How to identify Septoria Leaf Spot

Symptoms of Septoria leaf spot also start
tvb now,tvbnow,bttvb" ~% ^( b- q/ ~) }1 z/ y, d+ o7 S
on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change os.tvboxnow.com0 i. k7 t2 L& U8 e& z2 R# w1 P& O4 h9 t
公仔箱論壇* p, s' Q5 P. m$ k2 U( J; ]' f& R
shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center.

Small dark spots, the fruiting bodies of the fungus
公仔箱論壇2 v( {) @/ x7 a/ U! j) B$ L' K
, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry tvb now,tvbnow,bttvb$ K2 _( \( [6 G( ~+ O

and dead. Stems can also become infected but os.tvboxnow.com2 \1 `( Q! \* y& b, N3 h7 o
os.tvboxnow.com7 n' N3 z; C! o) V+ M6 L1 W
infection of fruit is rare.os.tvboxnow.com4 C2 D/ \$ ?+ x1 {6 q* t* q

How to Prevent and Control Early Blight and os.tvboxnow.com0 R5 b0 ]+ P* O+ t) g( K- f) {6 F
! R/ N. N0 b5 }: o% u) q
Septoria Leaf Spot公仔箱論壇% L: j3 g" ~$ [- A# k
tvb now,tvbnow,bttvb& n2 G7 O8 z. s* K) Q* j6 I* _( U
Follow the 12 easy steps below to enjoy a

long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇+ ~. O7 I  R/ ?4 G

Weed your garden. Some weeds, $ x7 h# h5 }, c0 }2 A6 ^1 \

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.tvb now,tvbnow,bttvb/ c/ E& z8 g) {
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 k& M& I; g) s# e
Rotate crop locations. Don’t
tvb now,tvbnow,bttvb7 \0 t1 }6 ~/ K
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas , ~3 z8 Z& V' ^  y' D0 k
os.tvboxnow.com4 P% H+ m9 s, `! o9 @
where tomatoes were grown.

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb. h8 w4 L  C" Q! K, J) P

fungus from the soil to your os.tvboxnow.com. _' K/ C' z$ ~0 Y( [5 e6 V

plants.
tvb now,tvbnow,bttvb" [  `+ d$ |$ F) x
Stake or cage plants to keep them 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 {& ^7 [/ V3 O7 x6 ]5 N5 ]1 @" d

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes 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。* t9 X8 C- k7 j1 a6 w
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of

space above the soil without any leaves. Do not use

overhead watering.
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ' S( _, g% H& e9 ^: y
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 os.tvboxnow.com5 r1 d3 N" P+ g  R

fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are os.tvboxnow.com+ ^; i7 _' f0 f2 }3 A; l
  [) u" j) g- [* Q2 f* v
wet. Keep your plants happy and healthy. Weak and stressed tvb now,tvbnow,bttvb5 C% U; }. k3 ~3 e/ u! R7 V
* o3 ^0 t# J( Y% i+ H
plants are more susceptible to disease.& v2 v3 m5 b! B4 A7 }

Remove and destroy or throw away diseased leaves, both off the
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。, Y9 S\" Q7 P. R# j- V! W! E
plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early

enough. If a plant is heavily infectedos.tvboxnow.com# o( G$ Y. F( d- B6 O

, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used os.tvboxnow.com3 d# D& ]2 l! _+ h, ^
tvb now,tvbnow,bttvb0 M& E9 u& N! j/ G) Y8 M& o% H
to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇; M  ^" [4 q7 r. E" \3 |
tvb now,tvbnow,bttvb: {3 `" W' I3 o6 I. g! O. H
Spray plants to prevent and control the \" `/ @: b9 ]. o( d( \( D0 C
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% \0 m$ z  i, m
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try " D% ]; C- |3 A: u

GreenCure.
公仔箱論壇2 H3 ]2 U4 Y" ~( K1 A5 ~+ Y

Late Blight on Tomato Plants
os.tvboxnow.com6 ~1 n- c- y5 D3 }
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato tvb now,tvbnow,bttvb1 ]& |/ F# _0 h, c/ A8 s

plants in a garden. Once a tomato plant
os.tvboxnow.com( ?5 N; G) l* ~
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇+ x: q9 V5 x' Z3 J
公仔箱論壇5 m3 f9 F! u1 S: d/ X$ c9 F& k0 q
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

can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
tvb now,tvbnow,bttvb) E( E* X( s/ }+ O2 c
Septoria leaf spot infections will also help prevent late blight infections.

收藏分享評分

回復引用

訂閱 TOP

返回列表