All of the processes and conversions of nitrogen, into different forms, in the atmosphere, the lithosphere, the hydrosphere and the biosphere (nitrous oxide, nitrate, nitrite, ammonia, organic nitrogen).
Sciences and techniques that aim at understanding the relationships between crops, environments and agricultural techniques, and at improving agriculture.
Extraction of fresh water from a groundwater source or surface, permanently or temporarily, and conveyed to the place of use. Water abstractions include all activities related levies generated by agriculture, industry (including energy), the supply of drinking water, or other (mineral spring authorized, production artificial snow).
Plant protection products. There may be some confusion with pesticides, which are phytosanitary products, but only intended to fight against organisms considered harmful. Phytosanitary products are used in large quantities in various ranges of application: firstly agriculture, but also roads (maintenance of roads and railways) and various private uses (gardening, treatment of facilities, etc). In fact phytosanitary products style the same products as pesticides, but they are then used for agriculture and crop protection. The phytosanitary products include many classes of products such as insecticides (which kill insects), fungicides (which eliminate fungi), herbicides (weeding), nematicides (which kill nematodes and earthworms), rodenticides (used to get rid of various rodents such as rats, mice, field mice, garden dormice, etc).
Device used for withdrawing water (spring, groundwater, river) for a given use.