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 3 i4 E$ q) @! n2 I# n! E- i( K5.39.217.77:8898 , ~. ]9 F r1 ?! q. _7 [" g+ x; qcan start at any time. Infections can occur anywhere and are most severe in wet and humid areas.tvb now,tvbnow,bttvb; {, I; r: z7 w* S4 H9 K
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How to identify Early Blight5.39.217.77:88983 \" X _2 u8 Q
, @7 r9 \2 H0 b3 |1 B' d9 n, `tvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to 9 O. [1 {7 E, l2 w3 `
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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 公仔箱論壇# I* H$ p/ @% A! \
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in color and form concentric rings, or 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。5 ], E5 M G3 ~
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 5.39.217.77:8898" w8 F$ @+ G+ ?6 J" Y2 |% T
8 T% c8 C% s* z8 o1 h: I* ^/ t leaves may fall off. Extensive loss 6 m4 W2 {3 V' l9 H" ^( u# xTVBNOW 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。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* ^2 E9 |$ r9 c6 ^9 _& M
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.5.39.217.77:88989 P7 S+ p/ U3 E: E7 P! T* s% h+ q6 R
D% F! H! [: 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。 ' \0 N/ z1 @! M6 w6 Wtvb now,tvbnow,bttvbHow to identify Septoria Leaf Spot# w$ b3 j, n1 d9 z2 q5 Q( j2 w+ q
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Symptoms of Septoria leaf spot also start 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& j1 O* a: _( p8 K3 B4 c( v6 Q
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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 9 b+ f: Z1 w* V; P3 f5 Ltvb now,tvbnow,bttvb - [+ g: v+ n- s: g& Y2 Nshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 6 H% Y0 t2 x2 H4 ptvb now,tvbnow,bttvb公仔箱論壇! ]. Z' i" b3 k9 T' u( s
Small dark spots, the fruiting bodies of the fungustvb now,tvbnow,bttvb7 N5 l6 h& m& T4 _3 N5 E
3 O9 K5 H0 c j$ u# ilike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. % X. T w3 I7 A4 {/ i1 TTVBNOW 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。5.39.217.77:88988 F0 v3 W& d5 D9 h Rotate crop locations. Don’t 3 {0 o! K- N$ t: ~' I 2 H) y5 E: V5 z4 v% d( m- B1 w* ztvb now,tvbnow,bttvbplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas , n6 X. p5 B. r3 U" Mtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb( m( z# X+ Q: f) |- d3 s: t( j
where tomatoes were grown. 2 ~2 V j2 `9 f9 x2 l6 T' A公仔箱論壇9 h& y+ G7 Q' c5 v5 g1 K: C
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. + l" M2 ~, C/ Q4 J6 y4 q5.39.217.77:8898Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb7 B* o# D8 f! o7 P1 u# I& u
8 G* _. c# a6 `) d; K/ B- Hfungus from the soil to your . t, w! i# Q; M: Q+ B# n) C 3 u2 T; _5 L7 E0 z# g( K! b7 c公仔箱論壇plants. 8 T' O! h: I' I7 S ^tvb now,tvbnow,bttvb ' i9 { Y% w# K5 Etvb now,tvbnow,bttvbStake or cage plants to keep them / c, \6 ~/ E! ]5 a7 Q6 G* H公仔箱論壇 : x% T1 ~- i8 ?% L; h5 Xoff the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and - S" t' m; d' ]) S1 |/ g8 i. U
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, O& Y/ j$ A9 I
cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of ; b( p5 |& G) D- t5 b' D/ Ltvb now,tvbnow,bttvb% Y% E6 Z: G4 T* C( l0 m* l0 P
space above the soil without any leaves. Do not use & b$ ^4 ~& G- n) c5.39.217.77:8898 \" v, ?# R1 @% o* H: ^, ]公仔箱論壇overhead watering. / P, M3 _3 {. a$ i6 _, eTVBNOW 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。Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. & a4 A% o/ D: R k; p9 |tvb now,tvbnow,bttvbConsider using a soaker hose or drip tape. Water in the early part of the day. This allows leaves to dry faster. Wet leaves allow ( F3 T; D: \: \8 O& D; w* ltvb now,tvbnow,bttvb 2 c# B E, c. \0 }tvb now,tvbnow,bttvbfungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 公仔箱論壇; S" a: t! x) s
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wet. Keep your plants happy and healthy. Weak and stressed # E! N- [4 I: ^; K公仔箱論壇 : g5 t3 v4 k+ @* aplants are more susceptible to disease. 5 i9 g b& ?+ Y/ V, D4 Stvb now,tvbnow,bttvb公仔箱論壇( G7 }" l& `/ ?0 Z" {! c6 ^
Remove and destroy or throw away diseased leaves, both off the 5.39.217.77:8898- p5 L8 ]8 Q. V5 a! M, Y0 ` q
( o- e/ E# D7 |- l( O- Fplantsplant and any that have fallen onto the ground. This may help stop the spread if caught early 公仔箱論壇! j* r. k, p) l, o. n2 G; v. f- W8 J
8 F4 W" R7 ^$ E0 LLate blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato % N' Y. p2 c/ d2 a+ ztvb now,tvbnow,bttvb公仔箱論壇1 ~( r6 i- u5 }" h% w4 t3 b plants in a garden. Once a tomato plant 7 ^: c7 b$ w- M3 |6 V
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 4 [9 P9 e4 ^/ }' d% Ptvb now,tvbnow,bttvb$ j# B! U) v/ @* ~+ l
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 ' b5 {2 O# H1 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。 # P) v' `$ ~; W! W0 C2 bTVBNOW 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 : {0 D; J1 K+ H1 _2 Q; M公仔箱論壇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, W: C S! |8 P3 E6 Q$ r0 s
Septoria leaf spot infections will also help prevent late blight infections.