Found that the form of the first trial, second and third volumes of organic carbon in the soil. Most of the decline. Only empty plot of Organic Carbon Experiment 2, with organic volume decline of Ophiuchus first organic volume. And vetiver planting single rows spaced 25 cm between the beginning of the trial, the third volume of organic carbon. This is down from Ophiuchus, the first volume of organic carbon and expected. If the grass has grown long, it can add up. The amount of carbon into the soil more.