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Chicory (Cichorium intybus L.), used as fodder, has some favourable features: high longevity, resistance to drought and to soil conditions (acidity, alkalinity), cultivable pure or associated with different grassland species, quick recovery after mowing or grazing, high degree of consumability, high nutritive value. Research shows that chicory, sowed pure or in association with legume species or with grassland grasses, produces daily, depending on vegetation duration, important amounts of green matter, i.e. between 120 and 280 kg/day/ha without or with nitrogen fertilisation (N150). [ABSTRACT FROM AUTHOR]

In the conditions of the Banat's Plain (Romania), chicory can be an important fodder crop well adapted to the climate conditions in the area. Research results show that this species is positively influenced by the use of chemical or organic fertilisers. Applying nitrogen fertilisers on a yearly basis at rates of N50-100 lead, in the second vegetation year, to productions higher with 22-34% than in the control variant (no fertilisation). The remnant effect of animal manure was obvious in the second year of application too, when we obtained, at a rate of 40 t/ha, an increase of 26% compared to the control variant. [ABSTRACT FROM AUTHOR]

Research carried out at the Mountain Grassland Research Basis of Blana (Bucegi Mountains) aimed at improving the grassland of Nardus stricta locate 1,800 m above sea level. Research started in the year 2000 with the establishment of a trial made up of five variants: T - natural grassland (control); A - natural grassland fertilised with NPK; B - natural grassland fertilised with NPK + animal folding; C - natural grassland, amended + fertilised with NPK + animal folding. The paper presents the effect of long-term treatments (applied every single year starting with the year 1995) on dry matter production and on the floristic composition in the year 2011. [ABSTRACT FROM AUTHOR]

For achieving some culture structures that would ensure, through rotation, a continuous coverage of the agricultural land, 6 types of such structures have been studied, based on aristate ryegrass. Each forage structure, that covers the land for a consecutive period of two years, has been cultivated in two variants: one non fertilized with nitrogen (N0) and the other fertilized (N+) according to the specific dose to each culture. Based on results obtained it has been demonstrated that: in natural experimental conditions, the forage system of continuous cultivation of the land ensures a growth of 2-3 times higher in the forage production as compared to the conventional system based on one culture sown in an agricultural land. [ABSTRACT FROM AUTHOR]

The research on soil nitrogen dynamics of crop structures of the feed system studied had se purpose to reveal the amounts of Nt made at the end of the vegetation periods and on the entire cumulative period of each system, both in unfertilized and fertilized variants with nitrogen. Following the obtained results there was found that the introduction into the feed of corn silage and aristed ryegrass the cumulative amount of Nt in soil was 181.5 kg / ha, at the unfertilized variants and 190.2 kg/ha in the nitrogen fertilized variants. [ABSTRACT FROM AUTHOR]

Applying nitrogen fertilisers in legume species has been subjected to scientific research due to the efficacy of these fertilisers on yield (symbiotic atmospheric nitrogen fixation). In general, applying high rates of nitrogen fertilisers on legume species does not correlate directly with green matter production because these species take the necessary nitrogen from the atmosphere. This feature is specific also to bird's-foot-trefoil, which fixes important amounts of atmospheric nitrogen during vegetation. This paper presents the impact of the interaction between organic and mineral fertilisers on bird's-foot-trefoil within a bifactorial experiment. Differences in yield at both unilateral effect of the factors and at that of the interaction of the factors are statistically ensured. [ABSTRACT FROM AUTHOR]