THE EFFECT OF SHARE OF COMPONENTS IN THE MIXTURE AND HARVEST DATE ON CALCIUM AND MAGNESIUM CONTENT OF MIXTURES OF FIELD PEA AND SPRING TRITICALE IN SUSTAINABLE AGRICULTURE

The cultivation of mixtures of legumes and cereals contributes to biodiversity and can provide good-quality roughage for direct feeding of livestock. The purpose of the study was to evaluate the effect of the share of components in a mixture of pea and spring triticale and the timing of harvesting on the calcium and magnesium content of green mass. The field experiment was conducted in 2016–2018 and two factors were studied: I. The proportion of components in the mixture: field pea – 100%, spring triticale – 100%, field pea 75% + spring triticale 25%, field pea 50% + spring triticale 50%, field pea 25% + spring triticale 75%. II. Harvesting date: flowering stage of field pea, flat green pod stage of field pea. The highest content of calcium and magnesium was found in field pea, while among the mixtures, in the one with 75% of field pea and 25% of spring triticale. A higher content of the mineral elements in question was found in mixtures harvested at the field pea flowering stage compared with mixtures harvested at the stage of the flat green pod of field pea. Due to the mass relationship between macronutrients, the green mass of mixtures of pea and spring triticale should not be the only feed for livestock.