Broken-stick model to determine the final period of possible companioship between weeds and soybean.
Productivity data got in two experiments were used with the objetive of evaluating statistical methods to determine the final period of possible companionship between weeds and soybean. The field experiments were delineated using the randomized block design. The crop was kept weed-free for increasing initial periods. Throught Duncan's Test and Tukey's Test (p=0,05), the final period began in 20 days, to both experiments. However, in quantitative series of treatment, the utilization of regression is very much useful and statistically indicated. Using the broken-stick regression model, the final period began in 21 days in exp. 01[Y-1962.04:1901 (X-21|X-21|); R2=0.70***], and 41 days in exp.02 \{Y=2397.45+11.84 (X-41|X-41|); R2=0.72***\}. Therefore, broken-stickmodel is able to supply important informations to weed management.
| Main Authors: | , |
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| Other Authors: | |
| Format: | Anais e Proceedings de eventos biblioteca |
| Language: | Ingles English |
| Published: |
1993-08-16
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| Subjects: | Soya, Soybean, Association, Model, statistics, weeds, |
| Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/10805 |
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