返回列表 回復 發帖

[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 5.39.217.77; I6 t& n! u3 a: K
公仔箱論壇* a9 \7 k6 x# M2 k4 ]
can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.
7 Z/ c! a! E! S公仔箱論壇! i+ s, z2 I) z; B- X1 z
5.39.217.77# e( y- z5 V3 f0 u
How to identify Early Blight
$ J8 M5 i$ \8 `7 m! |) o! ]4 s/ K
, o0 x% f' l. d, Z% W' m* G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 tvb now,tvbnow,bttvb0 ^: e3 Y) {  x1 j0 G5 i/ Z

4 G- k( f0 ?' \# B; y5.39.217.77newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown
& ^: H3 E' v' B) r2 c' w
1 v7 Z1 ^. ]' f8 Pin color and form concentric rings, or a
8 q& P! q& B8 I# v\" A- a* otvb now,tvbnow,bttvb4 H8 \\" D4 \! B; l2 }
bullseye pattern
, as they grow. The area around the infection commonly turns yellow. As infections grow, 公仔箱論壇- i; a+ R  n" D5 ]" w1 X

. b" v  i5 w5 @5.39.217.77leaves may fall off. Extensive loss 公仔箱論壇6 o: F% w2 B+ F. [. J. j

2 K& _, l2 J4 }# N! ]5.39.217.77of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
, _1 R: q0 Y4 K$ L6 I3 V* X
6 s4 y- a5 ^" S9 j0 R& Z公仔箱論壇
3 C. T5 r' z- G6 |. A0 gTVBNOW 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。How to identify Septoria Leaf Spot
) R! ?: f* o1 i1 aTVBNOW 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 Y' @) S; w; F( ?7 R
Symptoms of Septoria leaf spot also start
) Y* ?9 `' N% j# W/ x& F$ z公仔箱論壇8 B' X" C( y: F8 B1 ?# E7 `
on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 公仔箱論壇. w! L! G. i' m5 w

, _7 |. Q% R  X" [" G# 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。shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. - I6 q7 E( o! l% n6 {
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。: f" r: [% E+ `
Small dark spots, the fruiting bodies of the fungus
6 {$ C: ^: Z\" x5.39.217.77\" r6 B8 W4 O& s, D( g  i% W# a! n
, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry
0 W7 ^& ?6 ?3 Z/ [) OTVBNOW 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- D+ x% Q3 V" L: `9 n/ {% a
and dead. Stems can also become infected but - C4 g9 D8 J/ X& x5 @

- o; v/ E, p, W. {/ P( a5.39.217.77infection of fruit
is rare.tvb now,tvbnow,bttvb5 U$ c7 `# O% v4 Y5 |' O: n
公仔箱論壇4 y# {1 _  R' A7 |; L
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。/ j- I8 p! U" y7 j3 j
How to Prevent and Control Early Blight and
4 I$ ?7 Z2 U4 v( e3 ~! X9 ltvb now,tvbnow,bttvb公仔箱論壇( J3 r4 I- M! `- N0 H
Septoria Leaf Spot

: g" `# y2 `6 i$ B# Q/ Z( Q8 ?) Q* d5 U+ O$ O: }. e
Follow the 12 easy steps below to enjoy a
- n1 U  Q' U  B* ^  Q& x1 {- w' Q' |; T# ^+ q
long season
of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.5.39.217.77- G. a; c( y* P. x# _; 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 ^7 F% C  }9 F/ z9 u
Weed your garden. Some weeds,
- H; X) \* f2 C2 }. a5 L# |' [9 A" ^* G
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.tvb now,tvbnow,bttvb! A2 ]- ~9 y% s4 P: z& \
tvb now,tvbnow,bttvb7 ?( [8 e( Z/ L. `
Rotate crop locations. Don’t * K# C4 [/ M' O8 g9 _4 G
公仔箱論壇2 e3 W0 o2 K! [, F# t7 g- }5 i
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
/ `- b7 L) K1 a, S公仔箱論壇  c0 y6 j4 c3 N" z8 e  a8 ~
where tomatoes were grown.
( f6 f  E) p! G2 |$ ~( |7 Q4 E/ d* K% q3 @
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.2 `. @2 H; P3 P$ n* C1 L
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of % }5 R1 X: n) g% d0 T5 p

- e& D3 q5 f7 R& Xfungus from the soil to your
0 b8 K- g0 I& g9 ~5.39.217.77公仔箱論壇; Q4 }4 E  ?; D4 n$ P: S$ {
plants.9 F& c7 x+ S, v1 K8 o; [

" M5 K8 b9 P, H! C+ s) o" z5.39.217.77Stake or cage plants to keep them 2 m5 H7 o4 b3 G4 {6 H/ ~2 o: L
5.39.217.77" P+ G! W) k4 t* |9 @
off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 公仔箱論壇0 m( w. y0 h$ V  x

: b: s9 ?0 s0 y" n0 Ytvb now,tvbnow,bttvbcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 1 r5 C- [  Q- J% M; }

& D: s8 E, x. L3 wtvb now,tvbnow,bttvbspace above the soil without any leaves. Do not use
( ?5 u6 |% K! X! X; j公仔箱論壇( @: c1 X4 [  P% l7 q. P& K
overhead watering
. 公仔箱論壇+ ^% a% u" [7 t1 s* Y
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 5.39.217.772 Y. t7 ^. {1 V. t6 B
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
- k. K! S4 X, @9 a" F9 q
0 @) p% `9 t; ?/ r5.39.217.77fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are   S6 \8 C1 c8 Z( D

! Y  v" @# W7 S& U7 V公仔箱論壇wet. Keep your plants happy and healthy. Weak and stressed / w0 }8 Y9 Y2 L% t' V
5.39.217.776 @7 |; O9 w4 h( ^: j8 s% \
plants
are more susceptible to disease.公仔箱論壇, b6 U- k: j$ n; t
' P8 E, w( t0 \. @! T
Remove and destroy or throw away diseased leaves, both off the \" g$ T: W# g2 M

5 W. |* i3 \/ h8 t) u: u2 Y5.39.217.77plants
plant and any that have fallen onto the ground. This may help stop the spread if caught early
4 |/ D5 {! Q* H0 w# }9 I: R5.39.217.77$ u/ _% T3 q2 ]' k  g" [5 I1 }
enough. If a plant is heavily infected
2 J) L$ V3 \, m\" L; R% L5.39.217.77
$ U# R& z7 A: d, }
, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used
, W& V& i( _1 T* n, Q# w6 \
) U& @  R$ s# X) e$ ~* t4 b7 E公仔箱論壇to remove diseased leaves should be disinfected before being used on a different plant.tvb now,tvbnow,bttvb7 p3 ?/ |. j9 ~
+ c" X! h5 r, V6 r
Spray plants to prevent and control the
& i) I& ~8 ^; b$ u0 A- Y7 ?; [\" `5.39.217.77tvb now,tvbnow,bttvb; `% W1 W* h% g( W
spread of Early blight and Septoria leaf spot.
Commercial fungicides are available. For organic gardens, try
8 l3 y+ B) w; q公仔箱論壇& b4 {: P; |8 l* b
GreenCure.
) o: {2 j, _$ A& a& l: H) Rtvb now,tvbnow,bttvb
# l7 I4 l( _! Y% Y; y6 d8 y2 H5 Q2 N5.39.217.77TVBNOW 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 A  s7 i% V# F# q2 h
Late Blight on Tomato Plants
% b, |5 X: X- L5.39.217.77
' z. D: N' O2 v8 c0 @+ I5.39.217.77Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 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。3 o0 P0 w) R: k# f0 R  q' x4 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。7 y6 S6 w0 i3 N' G3 C1 @% D; t. v8 R
plants in a garden. Once a tomato plant 5.39.217.77; ]* R$ i. A$ L
! M6 Z5 }3 o) D% N: S* p
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, ; D2 w0 E  ~- x' G0 f7 H! d; C
公仔箱論壇; W# t5 x, [( E) Z; G
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
0 s' h. U' M1 @* {3 O* h5.39.217.77
3 \& `7 [3 n1 ]* ?6 t' J3 `. k$ a公仔箱論壇
can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and $ {% v# u& r2 J+ c: M' ^: N
tvb now,tvbnow,bttvb6 C4 d$ g6 [. ?5 ]+ J
Septoria leaf spot infections will also help prevent late blight infections.
返回列表