Rangeland improvement systems in the 'espinales' of the subhumid Mediterranean zone of Chile. 2. Botanical composition and pastoral value
1992
Avendano R, Julia (Instituto de Investigaciones Agropecuarias, Cauquenes (Chile) Subestacion Experimental Cauquenes) | Ovalle M, Carlos
The results of yield production and vegetation cover in part I and part II, the botanical composition, pastoral value and global discussion of both parts were analyzed, under four different establishment methods and with seven seed species during the first three years. The superficial cultivation systems were the best ones during all the years. The surface sown systems, with or without sheep trampling can be a long-term improvement method (third year after seed broadcasting), specially with the naturalized ecotypes. Medicago polymorpha, Lolium multiflorum (naturalized ecotipes) and Trifolium brachycalycinum cv. Clare were the species best established. In the fertilized range the Pastoral Value increased in 8 to 24%, in relation to the unfertilized. With seed broadcasting this increase was large, 71 to 94% and 28 to 43% in the first and second year, respectively, in relation to the fertilized range
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