標題: [生活小百科] Early Blight and Septoria Leaf Spot on Tomato Plants [打印本頁] 作者: 6t6t 時間: 2019-4-13 05:03 PM 標題: 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 " Z ^! _- `3 T
; i6 h, @5 m' z( H) l; t, Gcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas. & S: A" S3 d/ g1 H$ V0 u3 S+ u+ E; }3 k- }2 M" h
5 S, \$ s8 m' z2 j+ o* UHow to identify Early Blighttvb now,tvbnow,bttvb9 Z1 a: f ] D
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Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 0 V& t& |9 ? w/ Qtvb 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。6 |% q) u6 x% k- i
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/ i; G. I" ?/ C6 m3 Y. N3 M
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in color and form concentric rings, or a 5.39.217.77:8898# f% C' R0 N. Z- T1 b: m H; @9 F
0 a& M) e* x7 L# n- j\" sbullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 9 Q8 e& `: b0 `! g4 Y9 a* f9 h; |- t9 y leaves may fall off. Extensive loss * U0 e1 @0 c" i6 d ?4 W7 k- U0 l4 G5.39.217.77:8898 & O" n* j. d0 s- x) |公仔箱論壇of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. 0 l; S1 b6 V* P; g8 ?# C2 t- C* j( _ 3 y$ z0 i8 \$ V! J( F* M1 ^+ @7 M5 Z1 `3 B2 G
How to identify Septoria Leaf Spot 5 h1 P: E* N9 q! L6 F公仔箱論壇 # \! J# s9 x" `$ pSymptoms of Septoria leaf spot also start 4 r5 H2 J U# y; kTVBNOW 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 v' ^/ ^" r5 L. |$ Q$ z
on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change 5.39.217.77:8898" h# R) ?3 a7 G4 b( Y
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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. 公仔箱論壇/ ]( t1 J& |( a! l0 g; p! O
5 ~* X h* |& \Weed your garden. Some weeds, 6 z) o. U0 F; R' KTVBNOW 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 B# t, B8 a/ A O' m, ^1 xlike 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。1 z$ v) Q1 i7 D$ J5 [
0 q4 ?0 n( \! S; G! w公仔箱論壇Rotate crop locations. Don’t 8 z2 R7 G# z8 `5.39.217.77:88983 D& H( J9 O5 Z3 i' S; P& \* [
plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 公仔箱論壇7 F. _' r3 E" y; g6 K' x
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where tomatoes were grown. , @6 J" I6 Q0 C d1 ]+ D2 g5.39.217.77:8898! P" J+ {+ V7 W
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. ) Q9 d- E6 t, j4 T. X- p% r公仔箱論壇Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 4 z$ b- a9 j3 Z" k$ J$ |tvb now,tvbnow,bttvb , T- `8 n. M3 Atvb now,tvbnow,bttvbfungus from the soil to your 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。. c, T$ e5 d; N5 [' l
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plants.tvb now,tvbnow,bttvb7 F" d# F9 `# I+ o9 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。! Y' \$ s* H B s; F
Stake or cage plants to keep them 公仔箱論壇5 [3 k& e% n* Z5 g# ]/ ^3 _) S. L
0 i5 C- ~! [' G0 Z: Otvb now,tvbnow,bttvboff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and , G6 m# K$ F6 @ K- v5.39.217.77:8898 0 G' z' \9 W f; ~0 f) _7 u7 p5.39.217.77:8898cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 5 V) F, x3 ~% S: Z : V6 D; a" A6 k2 C; g; vspace above the soil without any leaves. Do not use 8 m, M3 Q& q- h& E% x0 a % `% Y+ s7 ~% l; YTVBNOW 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。overhead watering. 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 Z4 z ^5 j( i+ y( K5 d2 ^
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. 6 T! O7 C* f* w" W/ r( N3 o- {公仔箱論壇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 ; K7 ` ^# 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。 & x+ _( |4 ]; S1 Mfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 9 \" R/ j5 @" F3 k: Etvb now,tvbnow,bttvb y1 e( i5 I2 g6 dtvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed 5.39.217.77:8898( g6 c4 O( _! I
: D' n( P3 k$ Z# ]; P8 B9 @: yplantsplant and any that have fallen onto the ground. This may help stop the spread if caught early tvb now,tvbnow,bttvb! ], b1 V t. {7 z
+ F7 _. p+ D. }! h: v公仔箱論壇 : u; Z) R# H4 N5 HLate Blight on Tomato Plantstvb now,tvbnow,bttvb5 W; u' e4 E7 k3 c
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Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato ' @, |' W5 X1 i3 w$ d
/ u8 J7 M, t" a/ ~9 ^公仔箱論壇plants in a garden. Once a tomato plant 8 y, J% m& s: I- C. r: Ntvb now,tvbnow,bttvb D4 ~ M0 z8 p0 \7 s8 ^7 r! E
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, . |3 n ^# Z7 E8 a" I$ V9 V7 O& V9 j : w& i3 F; v* V5 v; `tvb now,tvbnow,bttvbwater-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 P# @: X. G `! f' r公仔箱論壇 $ {+ P3 s1 c\" u( N. FTVBNOW 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。 can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and 公仔箱論壇4 S6 I" m+ u' q& ?7 O
) W5 N: c$ x+ q8 E3 r) J5.39.217.77:8898Septoria leaf spot infections will also help prevent late blight infections.
