[生活小百科] 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 $ q9 T- j3 C3 ~# @: }% ^

can start at any time. Infections can occur anywhere and are most severe in wet and humid areas.5.39.217.76% m- C3 M( o* f+ R; |

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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。  ^! y2 B/ G3 g0 c6 g' R( a

Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. Over time, infections spread upward to

newer growth. Early blight infections appear as spots that may start out circular or irregular in shape. Spots are dark brown 6 Z8 O1 G- w# m7 }) B; E9 x3 H

in color and form concentric rings, or a 5.39.217.76  ?, ^. N  t1 c# R8 F
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bullseye pattern, as they grow. The area around the infection commonly turns yellow. As infections grow, tvb now,tvbnow,bttvb/ O  u9 K6 N( A/ g1 \, T

leaves may fall off. Extensive loss tvb now,tvbnow,bttvb3 ~( Z5 h1 V: C; K& M( p2 \
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of 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 Spot

Symptoms of Septoria leaf spot also start 3 u; l, v5 ^" F' ]4 k% w

on the older, lower leaves of a tomato plant and spread upward to newer growth. The spots start out circular but change

shape as they grow and can merge with other spots. Spots typically have a dark brown edge with a lighter gray or tan center. 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。& D3 D- Q! x3 Q9 `

Small dark spots, the fruiting bodies of the fungus
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, will appear in the gray or tan centers. As infections progress, leaves can turn yellow, then brown and finally dry

and dead. Stems can also become infected but
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infection of fruit is rare.tvb now,tvbnow,bttvb, y6 f! C1 \) K0 z$ k* `, s2 b7 k
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How to Prevent and Control Early Blight and tvb now,tvbnow,bttvb( [% v& x7 t3 J2 C: i
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Septoria Leaf Spot" k% j0 d5 H. T% p: w$ [

Follow the 12 easy steps below to enjoy a
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long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes./ l6 A* W6 X$ a) l: R
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Weed your garden. Some weeds, 5.39.217.763 f, h9 H! i. P5 g/ e; E

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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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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where tomatoes were grown.5.39.217.761 u# \! X3 O) G8 D) e, l! D

Give your tomato plants more space for better airflow. At least 2 feet of spacing, more is better.
Cover the ground beneath your tomato plants with mulch, plastic or landscape fabric. A cover helps prevent the spread of # y* B* {, c9 s7 E

fungus from the soil to your tvb now,tvbnow,bttvb6 J" \, p& q  X3 J( W; ^8 k2 M
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plants.5.39.217.76/ q' }* y/ j- R
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Stake or cage plants to keep them 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。+ B7 Y  ^4 L- D( `! E. y

off the ground. Early blight and Septoria leaf spot can survive on stakes and cages. Use only new or disinfected stakes and 5.39.217.76$ o4 W. R, a/ E9 \1 x3 R

cages. Remove lower leaves for better airflow. As plants mature, remove lower leaves until there is about 8 to 10 inches 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。+ I% ]) K) l4 [7 s
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space above the soil without any leaves. Do not use 公仔箱論壇0 F) a& S& a0 u- L4 j7 N4 T3 z
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overhead watering.
Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants.
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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fungus to grow and spread. Avoid working with plants when they are wet. Fungus can be spread more easily when leaves are
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wet. Keep your plants happy and healthy. Weak and stressed 公仔箱論壇3 J\" r) W) g/ |* s- q& a. l

plants are more susceptible to disease.
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Remove and destroy or throw away diseased leaves, both off the 公仔箱論壇5 Q! f  v( N% E& Y+ s% D8 U
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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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enough. If a plant is heavily infected
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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 5.39.217.764 O) I( D6 c7 j  J. v* h7 D9 f( u
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to remove diseased leaves should be disinfected before being used on a different plant.5.39.217.76" Z; a$ t, H, n& ^

Spray plants to prevent and control the
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spread of Early blight and Septoria leaf spot. Commercial fungicides are available. For organic gardens, try 7 l/ D7 e9 H6 a  ?$ b. u/ C. F
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GreenCure.3 K* P# L5 l$ p! m* N- X9 Z8 R" |

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Late Blight on Tomato Plants4 v8 I7 j9 Z  T9 e) n9 S. a

Late 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

is 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。' ^: j( n; v) {# U2 M- M
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! }0 N6 E4 M# e9 u# ^* A
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can infect all parts of a tomato plant, including the fruit. Most of the methods for preventing early blight and

Septoria leaf spot infections will also help prevent late blight infections.

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