Effects of nutrients on diseases of lettuce Downy mildew of lettuce
Effects of nutrients on diseases of lettuce Downy mildew of lettuce
Effects of nutrients on diseases of lettuce Downy mildew of lettuce
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Explore<br />
Tekero<br />
Infecti<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>lettuce</strong> with spores<br />
<strong>Downy</strong> <strong>mildew</strong> susceptible varieties<br />
100<br />
90<br />
80<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
Fortune Sure shot Winter Select C<strong>on</strong>stanza<br />
Incidence <str<strong>on</strong>g>of</str<strong>on</strong>g> plants infected with downy <strong>mildew</strong> (%)<br />
Lily<br />
Fortune<br />
Bernadinas<br />
Winter Select<br />
Tomos<br />
Bellagio Curletta LE 290<br />
LE 304<br />
Bellagio Robinio A<br />
LE 291<br />
Sure shot<br />
Boomerang<br />
K<strong>on</strong>g<br />
Roundhouse<br />
Seagull<br />
C<strong>on</strong>stanza<br />
Alpinas<br />
Boost<br />
Quintus<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
Anthracnose susceptible varieties<br />
Effect <str<strong>on</strong>g>of</str<strong>on</strong>g> Nitrogen <strong>on</strong> disease<br />
• 3 forms and 3 rates <str<strong>on</strong>g>of</str<strong>on</strong>g> Nitrogen<br />
• N forms<br />
‣ Potassium nitrate<br />
‣ Calcium nitrate<br />
‣ Amm<strong>on</strong>ium nitrate<br />
• No N in soil mix<br />
• Plant growth resp<strong>on</strong>se prior to disease<br />
assessment<br />
Anthracnose severity
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