A second crop of corn different from the usual: sown in a bined row and then with a higher seeding density than the usual seeding to 75 cm. In recent years there have been many who have carried out tests and who use it as an alternative to traditional precision sowing: it allows the approach of two rows, which take the name of bine, at 22 cm, inside which the arrangement of seeds it is offset. The distance between each pair of files and therefore between the bine, is 53 cm (there is also the matching 20-55). The numbers were not chosen at random: the result of 53 + 22 is in fact 75, inter-row well known to all. This involves the complete adaptability of the plant to the workings and to the collection performed with conventional heads at 70/75 cm of distance between the rows (except the weeding of course). Obviously, not all maize varieties can be used for this sowing with a density of 10 seeds / sq m, an investment greater than the traditional 9 or 7.5 seeds / sq m; therefore, new generation hybrid varieties are necessary, able not to lose their productive potential with the high density of sowing, thanks to a greater hold, in agronomic and sanitary terms. According to the tests carried out in recent years, in various Italian environments typical for the cultivation of corn, production increases of 8-13 q / ha of extra grain have been found. With regard to silage, the issue is more complex: establishing precise values ​​for the actual increase is not easy and many trials are still underway, which must take into account the multitude of variables involved in the production of chopped corn. The height of the plant, crucial for a large production, certainly remains lower than the traditional sowing investment. There may be an increase, however, up to 8 or 10% more, at best. Surely the greatest number of ears per hectare increases the percentage of starch in the silage and, therefore, the contribution of energy from the ration; it also increases the highly digestible mass for the increase of plants per hectare. In terms of production it means more milk from cows and more energy from biogas plants.