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 7 {8 r* I5 S0 b1 J公仔箱論壇 ! m- B7 v) o1 c6 F7 H2 e2 b. ~0 c: ]公仔箱論壇can start at any time. Infections can occur anywhere and are most severe in wet and humid areas., V d2 N. y* N+ ^7 m
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How to identify Early BlightTVBNOW 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。! g+ P% |0 h/ b" T# w
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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 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。 R8 P; I6 r2 C8 \8 w1 E& K) |3 e- v
0 J/ D5 {% b2 ?9 D$ S: J0 Q公仔箱論壇newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown # B& V' k K9 B3 H
2 y* I9 |. \2 i, fleaves may fall off. Extensive loss 0 G$ U+ @: ?! A- W+ C% |! twww2.tvboxnow.com; ]8 L% Y$ z7 q" j& d& H+ s5 W' w1 h
of foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit. % g$ U& T1 D! n: I/ U: DTVBNOW 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 q1 g9 {9 G( e6 Z5 R# }
* W* k. L ]& G公仔箱論壇How to identify Septoria Leaf Spot . F4 ]# |7 |$ U- Z/ ]! v \ ! l$ A0 D1 K8 m' y9 O; {www2.tvboxnow.comSymptoms of Septoria leaf spot also start ! m3 K# z8 J/ L, {# x9 Z* j
' Y1 t1 c+ x: N# r- U公仔箱論壇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' T! k: s7 z5 B/ ]- X
# Y {1 q! Y, W" @" m' q3 G2 vshape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. % N$ h" K8 J( J4 h2 @www2.tvboxnow.com ; k: i o' U* kSmall dark spots, the fruiting bodies of the fungus 4 u3 K) z1 G% j9 Ttvb now,tvbnow,bttvb' c: ?# ~0 G) {. c/ Y , will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry www2.tvboxnow.com+ y, Y X; M) Y5 y# t
4 f H, _8 {2 A6 }9 h- Kwww2.tvboxnow.comWeed your garden. Some weeds, 4 \9 n# h* N) I! N- xtvb now,tvbnow,bttvb , j6 c: s( o0 w3 q5 w$ [www2.tvboxnow.comlike nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.www2.tvboxnow.com; G! j+ R& D4 N- T0 u. ^) S( {
& B* t. k; A7 o) v+ W! ZRotate crop locations. Don’t 4 x' H) V1 m4 s% N( I) u" ], S/ Y8 P . ^) e$ w/ g! Ptvb now,tvbnow,bttvbplant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas 7 f* ]+ J( Z: \7 _. |公仔箱論壇# Y/ b w$ e; z' H
where tomatoes were grown. 7 p5 m8 r! B/ O- Ctvb now,tvbnow,bttvb 1 W% c" Z/ ^- t4 G! h. v# |Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better. : _* o& ?: `( Kwww2.tvboxnow.comCover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of tvb now,tvbnow,bttvb6 q" [* E0 `1 V( m, o5 m2 X/ b
7 d7 |; G$ w2 e! ^, Vfungus 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。0 Q! c! a, F" }5 e8 H
T6 k4 W& U+ O) `plants. / t* B* c! M( R/ ltvb now,tvbnow,bttvb公仔箱論壇' W; E3 W3 D6 J3 r0 ^0 h! M6 K' r
Stake or cage plants to keep them / @' O8 ]/ t6 |7 p. X公仔箱論壇 % {6 r" X2 ?( A+ [公仔箱論壇off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and www2.tvboxnow.com4 }' E$ c5 q3 @3 K; {2 Q$ J$ F
2 y, j" W* b# q0 W& \7 Xcages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of ) c: D" B7 A+ b8 _! k2 nwww2.tvboxnow.com ) ]2 t ?3 w; G) K; T' cspace above the soil without any leaves. Do not use ) t- t/ w6 o; S, T- Y% S
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overhead watering. tvb now,tvbnow,bttvb! F- w. D& K7 z
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. ) [8 [: q1 ^; s5 S9 e% i; Y; ^6 {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 7 `% Z! A% k' V: I( E3 ?% F公仔箱論壇2 r8 Y4 u: D+ p" d6 T* J
fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are . F6 [7 L& Y0 K2 J
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wet. Keep your plants happy and healthy. Weak and stressed : a7 ~3 R7 @# b2 [2 G$ J; ?1 m0 y4 r% \
plants are more susceptible to disease. 6 X: U* J/ K! [tvb 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。8 N& H! X: G& x e
Remove and destroy or throw away diseased leaves, both off the / p+ l/ R0 _8 n0 X
4 N\" Z2 r2 i' u% O, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used 公仔箱論壇7 S7 a$ R) O9 {, g6 @3 T# S* t
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。0 s" k! {; N" t: J- _, v
to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇+ B# G* W1 O# ]( A. @: K& P
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Late Blight on Tomato Plants : i, W* g# J2 n' F' |/ H2 QTVBNOW 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 R/ ^% p( K: }4 a* }1 p公仔箱論壇Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato 公仔箱論壇1 W' y; e2 B7 h. i& |
tvb now,tvbnow,bttvb9 n. E5 q, J: v& [+ o plants in a garden. Once a tomato plant * e* E: {# z) @ Y3 N' `- Z0 B. j* X7 V* L- L, `% ^
is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 公仔箱論壇" {0 o) k8 x# W. R! {
* J+ d& u- |6 s* B7 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。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 ! y% p6 f1 r/ r3 m5 F z/ ~ }1 C, ~3 Q- c4 V9 p6 Q can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and - {3 ~/ o- g. E, U
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Septoria leaf spot infections will also help prevent late blight infections.
