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Onion thrips management in Wisconsin

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Mean adult <strong>thrips</strong> / trap<br />

I. Cultural Practices to Slow / Lower<br />

Early Season Thrips Colonization<br />

A.) Measur<strong>in</strong>g Colonization (<strong>thrips</strong> colonization):<br />

5000<br />

4500<br />

4000<br />

3500<br />

3000<br />

2500<br />

2000<br />

1500<br />

1000<br />

500<br />

0<br />

138<br />

145<br />

May<br />

Thrips Suppression<br />

Interval<br />

152<br />

159<br />

166<br />

176<br />

June<br />

183<br />

189<br />

196<br />

July<br />

206<br />

213<br />

220<br />

227<br />

August<br />

237<br />

244<br />

251<br />

259<br />

Sept<br />

268<br />

Date

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