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- Title
SOME AGROBIOLOGICAL FEATURES AND THE ECONOMIC VALUE OF THE SPECIES Onobrychis arenaria AND Onobrychis viciifolia.
- Authors
Victor, ŢÎŢEI
- Abstract
The aim of this study was to evaluate some agrobiological features, the quality of fresh mass, hay and residual phytomass after harvesting the seeds of the leguminous species Onobrychis arenaria (Kit.) DC. and Onobrychis viciifolia Scop., grown in an experimental field of the National Botanical Garden (Institute), Chişinău, Republic of Moldova. In the first year of life, Onobrychis arenaria and Onobrychis viciifolia were characterized by optimal growth rate and regenerative capacity after being cut, making mowing possible twice per growing season. The productivity reached 2.71-3.15 kg/m² green mass or 0.69-0.78 kg/m² dry matter. It was determined that the dry matter content and its biochemical composition varied depending on the species and harvest time: 153-177g/kg CP, 196-231 g/kg CF,112-125 g/kg ash, 248-278 g/kg ADF, 372-412 g/kg NDF, 50-6 g/kg ADL,131-155 g/kg TSS, 192-219 g/kg Cel and 124-140 g/kg HC. The nutritive and energy values of fresh mass fodder: 67.32-69.68 % DDM, RFV=152-184, 10.81-11.16 MJ/kg ME and 6.83-7.15 MJ/kg NEl. The hay prepared from Onobrychis arenaria contained 176-179g/kg CP, 266-272 g/kg CF,116-126 g/kg ash, 284-285g/kg ADF, 381-387 g/kg NDF, 45-48 g/kg ADL, 108-109 g/kg TSS, 237-239 g/kg Cel and 97- 102 g/kg HC with 66.70-66.78 % DDM, RFV=160-163, 10.7 MJ/kg ME and 6.8 MJ/kg NEl. We found that the fresh mass substrates for anaerobic digestion had C/N=17-20 and optimal amount of lignin and hemicelluloses, the biochemical methane potential of the studied substrates varied from 265 to 289 l/kg ODM. The sainfoin phytomass that remained after harvesting the seeds was characterised by moderate gross calorific values (18.0 MJ/kg) and ash content (3.98%), it could be processed into briquettes and used for the production of renewable energy. The local ecotype of sand sainfoin, Onobrychis arenaria, had optimal productivity and nutrient concentration, can serve as starting material in improving and implementing new varieties in the production of protein rich forage, as well feedstock for renewable energy.
- Subjects
CHISINAU (Moldova); SEED harvesting; HEMICELLULOSE; HARVESTING time; RENEWABLE energy sources; ANAEROBIC digestion; SPECIES
- Publication
Oltenia, Studii si Comunicari Seria Stiintele Naturii, 2021, Vol 37, Issue 1, p43
- ISSN
1454-6914
- Publication type
Article