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Joint International Conference on Long-term Experiments ...

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AD%<br />

AD%<br />

4<br />

3,5<br />

3<br />

2,5<br />

2<br />

1,5<br />

1<br />

0,5<br />

0<br />

Tentant<br />

Frumoasa<br />

Robusta<br />

Rozal<br />

Redsec<br />

Roclas<br />

Figure 4: The effect of the copper sulfate in associati<strong>on</strong> with lime <strong>on</strong> the attack degree<br />

4<br />

3,5<br />

3<br />

2,5<br />

2<br />

1,5<br />

1<br />

0,5<br />

0<br />

Tentant<br />

Frumoasa<br />

Robusta<br />

Rozal<br />

Redsec<br />

Roclas<br />

Figure 5: The effect of the treatment with copper bent<strong>on</strong>ite <strong>on</strong> the attack degree<br />

Only in two varieties a significant positive reacti<strong>on</strong> was recorded when the treatment<br />

with copper oxychloride was applied: in Roclas variety the attack degree decreased by<br />

20% compared to c<strong>on</strong>trol and in Tentant the attack degree was 10% lower compared to<br />

c<strong>on</strong>trol. In the other variants, a neutral (Agatha and Rivera) or negative reacti<strong>on</strong> was<br />

recorded (figure 6).<br />

337<br />

Dacia<br />

Dacia<br />

Amelia<br />

Amelia<br />

Agatha<br />

Agatha<br />

Rivera<br />

Rivera<br />

Sante<br />

Sante<br />

Cristian<br />

Cristian

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