Greetings dear @gwajnberg, thank you for your valuable comment that undoubtedly enhances the content, we agree, that if we get the crude weight of protein among the total weight of plants we will get different results.

Generally to determine the quality of the pastures, the sampling is carried out by launching a square of one square meter in 10 luegares within the area equivalent to 1 hectare to be representative, in previous investigations the percentage of protein was determined for each square meter sampled and the weight was also taken, to be more exact.

At present, due to the costs of the analyzes in our country, a sample composed of all the launched quadrats is taken and sent to the laboratory, we are sure that it is less accurate at the experimental level but they are less costs.

These are small tests, the percentage of leaves and stems that are sent also influences the size of the sample, taking into account that the stems are more lignified and have a lower value in terms of the protein present.

Grateful for your comment, have a great week.