Since the organic fertilizers are very important for sustainable forage production, in this work, zeolitic tuff was used as a binding agent for ammonia released from cattle manure. It has been shown previously that the addition of 10 wt.% zeolite to fresh cattle manure increases retention of realized ammonia by 90% in comparison to the system without zeolite. Here, the experiments were established in pots, to study effect of different ammonia source on Italian ryegrass (Lolium multiflorum Lam.) growth and herbage quality. Preliminary tests indicate those fresh matter yields obtained in pots containing ammonia-loaded zeolite were higher compared to control pots. Herbage quality measured by protein content in Italian ryegrass shoots indicates that ammonia assimilation is not affected ryegrass quality.

Matgrass (Nardus stricta) is a perennial invasive species of low forage quality. In Bosnia and Herzegovina mat-grass communities occupy up to 40% of hilly mountains grasslands and therefore are of significant economic interest. Nardus stricta is a particularly predominant species of the mat-grass associations, comprising over 70% of the sward. The rest of the botanical composition of mat-grass associations usually consists of species with low quality or even of no agricultural value. As the yield and forage quality depend on botanical composition of the sward, the aim of the research described in this paper was the identification and evaluation the botanical composition of this type of grassland. The study took place at the Rostovo mountain, 1,100 m a.s.l.. The botanical composition of the sward was recorded by the Braun-Blanquet method and species quality according to a method of Sostaric-Pisacic and Kovacevic. Results obtained showed that the Nardus stricta association is poor in botanical diversity as well as in forage quality. Only 17 species were found, and Nardus stricta comprised more than 80% of the total grass cover. Only two species were of very good forage quality (Trisetum flavescens and Plantago lanceolata) but their contribution to the sward was extremely low.

Global environmental change is the greatest challenge of our time. There is increasing global awareness of the need for an integrated approach to analyze and mitigate the global environmental problems. Specifically, land degradation, water crises and the impact of climate change on natural resources and food supply are timely and relevant issues, not only for the industrialized world but also more urgently for the developing world. Some examples of global changes in agriculture and forestry include the misuse of natural resources, deforestation and land-use changes, degradation of eco-systems, loss of biodiversity, reduction in food security including plants and animals, the impact of waste disposal, the pollution of air and drinking water1-9. Finding solutions for achieving protection and improvement of the environment and natural resources in the WBC requires a comprehensive understanding of factors and processes linked to sustainable agriculture and forestry. Sustainable management of natural resources issues are related to topics of various disciplines, including, ecology, soil science, water science, agronomy, grassland science, animal husbandry, forest science, genetics and breeding. Until now, there are no in western Balkan countries (WBC) an Integrated Management System (IMS) including a controlling system and education, to achieve the sustainability of agriculture in terms of ecology, economy and social issues.