[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
) [0 a9 L( y: o$ o. o; i
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。9 y3 K- D! _3 [' K
- L, b9 g* L' z
How to identify Early Blight8 _3 l" z& i* X! y

Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to tvb now,tvbnow,bttvb- ]  {8 J. h- ]7 F4 }! l3 Q' K) d* J
) v- K& L5 u; |
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 公仔箱論壇$ X% s- ^& J7 G- n

in color and form concentric rings, or a 5.39.217.77:88988 F% a2 j5 ~$ Q2 y( Q
5.39.217.77:8898! R/ o! O5 B\" n6 c) L2 ?% D
bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb2 f1 N/ `1 m) _) l

leaves may fall off. Extensive loss 5.39.217.77:88986 q+ |' s- n% t4 n* ^% r1 h: @

of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.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。1 y' \% ~0 V: o/ b) R& _
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 b9 B# c8 w' ~# }( r
5 [# p% P6 |+ ~# y  t. U
How to identify Septoria Leaf Spot

Symptoms of Septoria leaf spot also start 9 c' O$ Z. w+ ]
3 h5 U0 ]# g0 [' b
on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change

shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 5.39.217.77:88980 d9 B& `$ |2 V) \" V5 }
5.39.217.77:8898, f5 N' ]7 q; _) [7 D2 x
Small dark spots, the fruiting bodies of the fungus

, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry

and dead. Stems can also become infected but 3 l8 t  i1 F2 l- 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 p8 \8 W& g; l) m
infection of fruit is rare.公仔箱論壇* A4 ^2 y# {! A- _& g& c: C1 \

How to Prevent and Control Early Blight and 5.39.217.77:8898, n4 @+ _( M0 [* K: j

Septoria Leaf Spot1 j: }4 g( A" L- H

Follow the 12 easy steps below to enjoy a . t+ a  V( K; R0 k1 r! A+ L
5.39.217.77:8898$ x* W9 l: [0 m# u% V/ a! {\" R
long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.
5.39.217.77:8898: O, n+ Q) |2 j/ q+ J, d) F8 k- N
Weed your garden. Some weeds, 5.39.217.77:8898, z1 p0 e% q/ ]$ [( r" A

like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.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 n0 d* j$ K: V- W6 a4 c
& t7 }' q* y1 S/ R2 u8 v
Rotate crop locations. Don’t
5.39.217.77:8898, i* \. J- \8 V6 Y: a) ?" B
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
tvb now,tvbnow,bttvb) [7 \: {9 l& z, D
where tomatoes were grown.8 p% R. Z( a* {8 ?

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.tvb now,tvbnow,bttvb# X# r+ a" e8 e" _% \
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of ( X. s- S2 B; y

fungus from the soil to your " J: q1 e- S6 s' o. I
$ ?8 d3 p0 m6 K
plants.
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 t; I' k# F! e3 }, b6 h+ Y0 ~
Stake or cage plants to keep them ' o0 C  N0 D0 M

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and ) [, c* {: Q- y/ ]# l+ D7 ~" v
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。) x, v/ v+ T0 j$ a
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of % G8 O; g1 K4 i  w0 G; R

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. 公仔箱論壇, T: o* R& d8 ]. Q+ ?0 S& V
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
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。  n# Y/ H  S; u; f; l6 L
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are
( W- n; e! @- ^
wet. Keep your plants happy and healthy. Weak and stressed 5.39.217.77:8898# A3 j/ I& Z3 s6 A

plants are more susceptible to disease.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 H4 I5 x3 u1 B" L" m$ Z

Remove and destroy or throw away diseased leaves, both off the

plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early $ v4 r9 g$ c. N

enough. If a plant is heavily infected

, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used + {4 I9 \, s& n1 R

to remove diseased leaves should be disinfected before being used on a different plant.

Spray plants to prevent and control the

spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try

GreenCure.
7 S: T" V) y/ w$ O. r/ F: ?  ~

Late Blight on Tomato Plants
; s$ V1 F+ X  _: h4 z
Late 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。# o; W! V0 ^+ v- b
plants in a garden. Once a tomato plant

is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 5.39.217.77:88982 @  u# A: C  A/ {  V7 f
5.39.217.77:8898- R0 k# V' C1 s) b% H
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
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。) O+ {+ y3 s4 r\" A& ?. A! J3 i
can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 5.39.217.77:88986 h7 c, r8 H1 q

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