Welcome to the AGROSUS Weed Sampling Tutorial! This guide will walk you through the essential steps for accurate weed sampling, crucial for effective weed control and maintaining healthy crops. Follow these steps to achieve precise results:

The ideal time for weed sampling is at least once a month, depending on the crop. It’s crucial to evaluate and sample weeds before any weed control measures are implemented. For instance, if you use mechanical control periodically, evaluate the weeds beforehand. Similarly, for conventional weed management, sample the weeds before applying herbicides.

In each plot, visually assess and record the overall percentage of weed coverage. Separate your evaluation into monocotyledonous (monocot) and dicotyledonous (dicot) weeds, recording their respective percentages. Identify the main weeds in the plot, determining the family and species of each significant weed present. Document this information for tailored weed control strategies.

Step-by-Step Guide to Weed Biomass Measurement

Step 1: Marking the Sampling Area
Mark a square of about 1×1 meters in each plot or use a hoop. Ensure the marker is placed in a representative part of the plot, centered on a pre-determined point.

Step 2: Weed Removal
Carefully remove the weeds from the marked area, ensuring not to damage the roots.

Step 3: Measuring Fresh Weight
Weigh the freshly collected weeds using a scale. Measure the total fresh weight of the weeds. Separately weigh the monocot and dicot weeds.

Step 4: Measuring Plant Lengths
For detailed analysis, measure the lengths of the aerial parts and roots of the most abundant weed species. Select 5-10 representative samples of each prevalent weed species. Measure the root lengths and aerial parts. If root measurement is not feasible, measure the aerial parts alone.

Step 5: Measuring Dry Weight
Spread the collected weeds for drying. Once fully dry, measure the dry weight of the weeds. This step provides insight into the total biomass contribution of the weeds to the field.

For more detailed information and tips on weed management, explore other tutorials and articles on our website. Stay tuned and subscribe to our YouTube channel for more tutorials and insights from AGROSUS!