Mediterranean forage production systems face increasing challenges from climate change, including rising temperatures, altered precipitation patterns, and extended drought periods. This review synthesizes adaptation strategies based on experimental evidence from long-term field trials across Southern Europe. Key adaptations include shifted sowing dates, drought-tolerant species selection, conservation tillage practices, and strategic supplemental irrigation. Simulation modeling projects yield reductions of 15-30% under RCP 4.5 scenarios without adaptation, but implementation of combined strategies can maintain productivity within 5-10% of historical averages. Policy recommendations emphasize integrated approaches combining technological innovation with traditional knowledge for climate-resilient forage systems.

Biological nitrogen fixation through legume-Rhizobium symbiosis offers sustainable alternatives to synthetic fertilizer inputs in forage production. This research evaluated commercial rhizobial inoculants on white clover, red clover, and birdsfoot trefoil establishment and nitrogen fixation rates in multi-species pastures. Inoculated treatments showed 40-65% greater nodulation scores and fixed an estimated 180-220 kg N/ha/year compared to 120-150 kg N/ha in uninoculated controls. Associated grass species exhibited increased nitrogen uptake and crude protein content when grown with effectively nodulated legumes. Economic analysis indicated inoculation costs were recovered within the first growing season through reduced fertilizer requirements and improved forage nutritive value.

Selenium deficiency in livestock and humans remains a significant nutritional concern in many regions. This study evaluated foliar selenium application strategies for biofortifying forage crops including ryegrass, clover, and alfalfa. Sodium selenate applications at rates of 10-50 g Se/ha were tested across multiple harvests. Forage selenium concentrations increased linearly with application rate, achieving target levels of 0.3-0.5 mg Se/kg DM for optimal animal nutrition without approaching toxic thresholds. Grazing trials demonstrated improved selenium status in sheep, with corresponding increases in meat selenium content. Forage biofortification represents an effective, cost-efficient approach to addressing selenium deficiency throughout the agricultural food chain.

This research quantifies the relationship between grazing intensity and soil organic carbon dynamics in temperate grassland systems. A five-year field study compared continuous grazing, rotational grazing, and ungrazed control plots across three soil types. Soil samples were analyzed for total organic carbon, particulate organic matter, and microbial biomass carbon at depths of 0-30 cm. Moderate rotational grazing increased soil carbon stocks by 0.8 Mg C/ha/year compared to continuous grazing, while maintaining comparable livestock productivity. Root biomass allocation patterns and enhanced microbial activity under rotational management were identified as key mechanisms driving carbon accumulation. Results support adaptive grazing as a climate-smart agricultural practice.

The fermentation characteristics and aerobic stability of mixed legume-grass silages were investigated using varying proportions of red clover (Trifolium pratense) and timothy (Phleum pratense). Laboratory-scale silos were monitored for pH decline, organic acid production, and microbial populations during 90-day ensiling periods. Silages containing 40-60% legume achieved optimal fermentation with pH values below 4.2 and lactic acid concentrations exceeding 60 g/kg DM. Aerobic stability testing revealed that silages with higher legume proportions exhibited enhanced resistance to heating, attributed to elevated concentrations of antifungal phenolic compounds. These findings provide practical guidelines for optimizing mixed forage silage production.

Native and improved grass species were evaluated for their nutritional value and potential as livestock feed in tropical pasture systems. Eight grass species including Brachiaria brizantha, Panicum maximum, and native Paspalum species were analyzed for crude protein, neutral detergent fiber, acid detergent fiber, and in vitro dry matter digestibility. Improved cultivars showed 15-22% higher crude protein content and superior digestibility coefficients compared to native species. However, native grasses demonstrated greater drought tolerance and persistence under low-input management. A mixed pasture strategy combining improved and native species is recommended to balance productivity with ecological resilience in tropical grazing systems.

This study evaluates precision irrigation strategies for optimizing alfalfa (Medicago sativa) production in semi-arid Mediterranean regions. Field trials conducted over three growing seasons compared conventional flood irrigation with deficit irrigation and soil moisture sensor-based systems. Results demonstrated that precision irrigation reduced water consumption by 35% while maintaining 92% of maximum yield potential. Crop water productivity increased from 1.8 to 2.7 kg dry matter per cubic meter of water applied. The economic analysis revealed a positive return on investment for sensor-based systems within two growing seasons, making precision irrigation a viable strategy for sustainable forage production under water scarcity conditions.