The field pea (Pisum sativum L.) is a pulse, with a year long life cycle, which is rich in proteins and belongs to the Family of Fabaceae. Besides the proteins (20-30%) it is also rich in carbohydrates (50-60%), around 5% of cellulose, 1-2% of oil and 3-4% of minerals. In livestock production dried peas are used either in their whole, grinded or crushed form. It can also be used green, as hay or silage. The field pea, with the help of the Rhizobium bacteria found in the tubers, improves the content of nitrogen in the soil by binding it from the air to the plant. Thus, the inclusion of the field pea in the crop rotation farming is important, not only due to its productivity but also for its role in nitrogen binding. In 2018, 434 ha of field peas have been planted in Slovenia, with a harvest of 2,4 t/ha. In 2018 seven species of peas have been planted in the laboratory field of the Biotechnical faculty of Ljubljana (“Astronaute”, ”Enduro”, ”Eso”, ”James, “Lessna”, “Partner”, “Tiberius”). It was divided into two different mid-row spacing (12,5cm and 37,5cm) with the intention of finding the differences in the production and factors of the crop, as well as observe the morphological development of each species in different spacing. The morphological development did not differ between different mid-row spacing. The biggest average production was observed with the “Astronaute” species (4932 kg/ha), while the biggest absolute mass was measured with the “Tiberius” species (285,1 g). Because the measured values in mid-row spacing differ for each factor, we cannot conclude that different mid-row spacing influences the factors observed. Some of the sectors of the field were destroyed by birds (crows and pigeons) and water retention, hence we advise a repetition of the experiment.
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