Early blight and Septoria leaf spot infections most commonly begin in the early or middle part of the growing season but 5.39.217.76* i' K* L, S1 U+ \9 N, H) P8 n
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can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.' m6 a, Y) s! J% Z' m) m. i# y: w
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How to identify Early Blight
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& z" H2 M5 |" u6 l8 i5.39.217.76Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to
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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 * g) h/ }2 l7 v8 K% l
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in color and form concentric rings, or a + W% S% s& D0 @) b1 c! b
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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。* P1 F. Q$ S+ l6 t2 E% v1 ?3 D, X
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leaves may fall off. Extensive loss 公仔箱論壇& b% _- ^) s1 J) T0 B$ w7 w' F& p
: F1 d% c6 R9 Q6 m" vtvb now,tvbnow,bttvbof foliage is common. Infections most commonly occur on leaves but can also appear on stems and fruit.
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How to identify Septoria Leaf Spot8 T8 T* n6 G3 @* s
( N7 ^3 h8 N9 m3 q5.39.217.76Symptoms of Septoria leaf spot also start
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8 \ S* @; @5 g/ Qon the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change
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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.
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Small dark spots, the fruiting bodies of the fungus5 Z3 v+ ^ \# Z8 U; t
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry 7 z$ j0 \6 c/ s9 `
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and dead. Stems can also become infected but 5.39.217.76/ l' G9 w6 N: _& `
9 S1 B% {2 X1 j& X! z, R8 A! s5.39.217.76infection of fruit is rare.5.39.217.76* e* C2 O2 D9 \/ b: P
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& H% [, X. \% ~) b! b) k& Z5.39.217.76How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb! u6 a( B1 \# @: @; n$ W# i& W& l% u, u
8 K9 R7 D1 y, j+ e0 J) Q8 Otvb now,tvbnow,bttvbSeptoria Leaf Spot+ p, I+ I- u% G; S9 N$ |/ j
9 m2 V- d3 ~, h, T# S) S: RFollow the 12 easy steps below to enjoy a 5.39.217.768 k6 J( K+ P9 z4 @
% A( g/ `/ a( ]3 m' z8 [3 Vlong season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes.公仔箱論壇( |* f" c+ R5 C* Y4 Y9 u! @6 \0 x f
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Weed your garden. Some weeds, * T7 R/ d3 _0 n3 E0 o4 e' I5 U1 ]. L
8 u' b5 `# S* _, [6 q: N公仔箱論壇like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants.
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Rotate crop locations. Don’t
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) K" p; ^, a9 Q1 p& `公仔箱論壇plant your tomatoes in the same place each year. Early blight and Septoria leaf spot can persist for multiple years in areas
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! N: H1 G% }, G, [1 Bwhere tomatoes were grown.
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) e! W- ]3 ~* u) H# VGive your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.# {3 ]' ?- ]; g6 y' b
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of 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 f" M5 b- {1 U( a Q* v$ i
) y5 N; ~' r3 Ytvb now,tvbnow,bttvbfungus from the soil to your
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, ~- i9 P/ F# X3 _! L' X5 ]plants.
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Stake or cage plants to keep them 5.39.217.76# `( y. A! G3 b2 F
+ u" m+ `% Z5 u5 g! \9 Loff 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。+ P: Z! W" E8 I6 @4 T
; l- @+ L6 C. _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。cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches of
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& h# X$ n. \. ~9 H5.39.217.76space above the soil without any leaves. Do not use 8 o9 n\" L; m9 B' M' l4 e; {+ A
; e* @6 b3 I! q$ xoverhead watering. tvb now,tvbnow,bttvb) r. f" y4 }- x
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
& C8 H. Q1 }1 R9 ~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
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0 V' d# u3 O7 N+ i& P1 ?5.39.217.76fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are 5.39.217.76+ e5 M4 k0 d7 Q( d* I, p
, Z7 W" |4 O& F. Y4 ctvb now,tvbnow,bttvbwet. Keep your plants happy and healthy. Weak and stressed
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* K( _( H; s, E5 m' G Pplants are more susceptible to disease.
' a1 A; i x4 \) V5 S( Ftvb now,tvbnow,bttvb公仔箱論壇. V5 o: P5 C& c
Remove and destroy or throw away diseased leaves, both off the 5.39.217.760 b% u6 o1 C+ U$ t1 I) ~9 J; i
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plantsplant and any that have fallen onto the ground. This may help stop the spread if caught early
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' y3 p% e) `# F% V- E. {* R公仔箱論壇enough. If a plant is heavily infectedTVBNOW 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。 L8 G6 x$ \& ^4 q; Q/ `
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, the entire plant should be removed and destroyed. Do not put infected leaves or plants in a compost pile. Tools used : T) }$ p) x2 r" ^8 `5 e
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to remove diseased leaves should be disinfected before being used on a different plant.公仔箱論壇# A0 a4 x/ \6 E2 j0 w5 }5 ]
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Spray plants to prevent and control the
3 ]\" `$ ^0 ^0 e5 U: x {9 u3 {tvb now,tvbnow,bttvb5.39.217.76) t* ?! a( ?6 \. s
spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try * h1 y2 h+ a/ p& H6 |8 F8 H
3 r- g) \/ c% K* j9 l: M5.39.217.76GreenCure.
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Late Blight on Tomato Plants
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/ p; S* ~7 M5 G: X% Q+ Y; ]5.39.217.76Late blight is another fungus that infects tomato plants. It spreads fast and can quickly kill all tomato
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plants in a garden. Once a tomato plant 0 f$ b) l" H. I' w! B
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is infected with late blight, the entire plant should be removed and destroyed. Late blight infections first appear as small, 8 V7 i% ^# `$ T* h g' k3 y# N
2 A) f3 W* L0 R, A$ M0 j! w" I2 t Ytvb 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 blight2 \6 ~7 m* e5 H( d\" C
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and
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Septoria leaf spot infections will also help prevent late blight infections. |
發表於 2019-4-13 05:03 PM
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