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Guidelines for physical weed control research: flame weeding, weed harrowing and intra row cultivation

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Figure

Figure 1. The effect of the number of plants per plot counted before treatment on the observed variability of the mean effectiveness (set mean =50%) and the standard error between the 4 repetitions
Table 1. A linear rating scale that can be used to assess weed control or crop damage
Table 3. The number of plants per plot to be counted before treatment to significantly (P < 0.05) assess treatment differences in plant loss by t-test in experiments with 4 repetitions
Figure 2. An example of three different weed assessments: Immediately before weed control treatment, and 5 days and 30 days after treatments A and B (modified from Vanhala, 2000)
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