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 公仔箱論壇' W+ k: ]0 ]4 u$ o+ ^9 l. n
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas. E2 `) C; [( L9 g$ v公仔箱論壇8 {0 z r# n- @0 A; v0 x8 r
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How to identify Early Blight 6 v2 q7 V7 Y% k5.39.217.77:8898 : ? o9 h; B4 Z, @1 a9 E. htvb now,tvbnow,bttvbSymptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to ' S8 ]. B! _2 M公仔箱論壇tvb now,tvbnow,bttvb" j7 ]2 K1 V% _5 B5 ^
newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown * X/ f( x9 P' a9 t) Y; E0 c' R- ?$ Z 9 O W8 ]5 T$ oin color and form concentric rings, or a & X9 Q6 z( K# C3 e3 M- m0 g/ ?5.39.217.77:8898 m- H- t9 W$ O, j& S公仔箱論壇bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, 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。 ^4 V6 _/ \- \* k* F- {8 [8 {
4 ~ O# v5 h' J5 e; h. J# yleaves may fall off. Extensive loss tvb now,tvbnow,bttvb$ _+ F5 Z( M/ u' t
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of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.公仔箱論壇* O8 X4 C! z7 D" k
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9 T% i; f: |2 l- {5 s公仔箱論壇How to identify Septoria Leaf Spot " z2 I" Q: d) @2 ^4 }) { 4 [6 N# R% f. l' k% L( qSymptoms of Septoria leaf spot also start & }; a# }$ v. q 3 N& Q: x ]( G; [: s/ ?( i% T) ?9 h( ?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。on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change # L+ ^# G8 k' N2 k8 f) c# w ' T' r' C2 b$ y: h/ @% m3 Q公仔箱論壇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& h* ` [) g6 W- }, x& o
! x7 k# c* ]0 n, e+ n3 b公仔箱論壇Weed your garden. Some weeds, / P0 G1 a4 h7 a& N5.39.217.77:88985.39.217.77:8898: `, \) d0 F7 j0 D# H* h' b. D
like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. 8 w4 [' s+ A" s" Z4 P% |5 ltvb 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。+ N4 C; F9 [. W9 I- G1 g Rotate crop locations. Don’t - X) U/ A; V, b5 `2 R9 x% z: {8 [tvb now,tvbnow,bttvb " X4 [0 a- ~1 LTVBNOW 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。plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 2 _! q( ]6 \' `- _* a" V( otvb now,tvbnow,bttvb& m' s6 m" n5 E1 o4 ^/ q4 e
where tomatoes were grown. ! N, o; y% j; F2 G1 C6 Htvb now,tvbnow,bttvb公仔箱論壇9 F/ A& V/ S5 C8 E3 |' N
Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. 7 u- d8 ?6 B. L2 J* V) Z( t1 }6 uCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of $ P3 I! e# b# V0 d, etvb now,tvbnow,bttvb 5 a2 V) F" s& u' I5 y; Ztvb now,tvbnow,bttvbfungus from the soil to your / a5 o; x) M6 F' B) a" UTVBNOW 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, q! _1 w& Qplants.2 O) V3 y6 Q4 f/ A! V
* k; ?+ Z) A- NTVBNOW 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。Stake or cage plants to keep them ' p0 y3 I" P3 Q& NTVBNOW 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。 + \% @+ H- q+ U9 Itvb now,tvbnow,bttvboff 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。2 w# E& x7 E) K+ x" U
0 g& p' Q& y* V公仔箱論壇cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of 9 G( q9 X2 @% }8 W* D- i: a
4 J. L# n5 \% l3 e" \公仔箱論壇space above the soil without any leaves. Do not use ( ?4 E5 q- n* 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。 : ~6 X6 n% {/ n+ N3 O; M\" }3 ` g7 z公仔箱論壇overhead watering. ; `9 _- f, k' Q6 Qtvb now,tvbnow,bttvbAvoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ; w( H% {/ v5 k7 ~" S! _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。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 ! T+ k; N b, R4 t& h, K# N2 K5 MTVBNOW 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。公仔箱論壇6 F8 @) V2 k! E* i0 U7 m
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 9 V1 o# \2 i3 v" U
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, b; s8 h: u3 t h8 N; f公仔箱論壇Late Blight on Tomato Plants 9 D A, `/ ~' \& M2 gtvb now,tvbnow,bttvb9 |' [4 p9 H, X; G0 z1 g
Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 2 f) A4 [) k% u+ w7 s4 W) c公仔箱論壇 * l( ]2 Z$ {" S6 Aplants in a garden. Once a tomato plant 5.39.217.77:88988 i, F, ~% l) B3 s& W9 }# C
& s7 s5 i+ r$ d* f$ b; ^: e" sis infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 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; B9 [# H) X8 r8 J) v
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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 blighttvb now,tvbnow,bttvb* W7 U2 z5 K h' Z8 ]6 G% ^
公仔箱論壇$ S, j. }6 v- W0 Y& J: Z7 }0 b0 G can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and + j+ _4 L( I5 |, O! s8 e
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Septoria leaf spot infections will also help prevent late blight infections.
