27.08.2013 Views

Weed biomass

Weed biomass

Weed biomass

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

<strong>Weed</strong> <strong>biomass</strong> used to quantify weed suppressive ability<br />

<strong>Weed</strong> <strong>biomass</strong> (g m -2 )<br />

400<br />

300<br />

200<br />

100<br />

0<br />

2003<br />

APO fitted<br />

APO observed<br />

IR60080-46A fitted<br />

0 100 200 300 400 500 600<br />

Plant number m -2<br />

IR60080-46A observed<br />

<strong>Weed</strong> <strong>biomass</strong>: Y wc = N w / (b w0 + b wwN w + b wcN c)<br />

2004<br />

b wc → crop competitiveness, time of weeding<br />

N c → seeding rate<br />

<strong>Weed</strong>ing at<br />

3 WAS <strong>Weed</strong>ing at<br />

2 WAS<br />

For both years: APO twice as competitive as IR60080<br />

0 100 200 300 400 500 600<br />

Plant number m -2

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!