<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Olea, L</style></author><author><style face="normal" font="default" size="100%">Verdasco, M P</style></author><author><style face="normal" font="default" size="100%">Paredes, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Características y producción de los pastos de las dehesas del SO de la Península Ibérica</style></title><secondary-title><style face="normal" font="default" size="100%">Pastos</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">fertilización</style></keyword><keyword><style  face="normal" font="default" size="100%">leguminosas anuales</style></keyword><keyword><style  face="normal" font="default" size="100%">mejora de pastos</style></keyword><keyword><style  face="normal" font="default" size="100%">pastos</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><volume><style face="normal" font="default" size="100%">21</style></volume><pages><style face="normal" font="default" size="100%">131-156</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">La producción de los pastos naturales de zonas semiáridas del S. O. de la Península Ibérica (DEHESA) es limitada tanto en cantidad como en calidad, siendo sus valores medios anuales de 1.440 kg/ha de M. S. con 10,3 % de Vroteina Bruta (P. B.) y 55,2 % de Digestibilidad de la Materia Orgánica (D.M.O.). Cuando se mejoran los pastos, con fertilizaciones fosfóricas o con introducción de especies más fertilizaciones fosfóricas, las producciones aumentan llegando a alcanzar los 2.500 kg/ha de M.S., con 12,6 % de P.B. y 60,7 % de D.M.O. La calidad de los pastos mejorados, aun estando secos, y su gran producción de semillas permite aprovecharlos en verano, consiguiendo sistemas de producción que duplican, al menos, la carga ganadera</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Montoya Oliver, J M</style></author><author><style face="normal" font="default" size="100%">Montero González, G</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Notas sobre el comportamiento de Cistus salviaefolius tras desbroces, laboreos, fertilizaciones y aplicación de fitocidas</style></title><secondary-title><style face="normal" font="default" size="100%">Pastos</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cistus salviaefolius</style></keyword><keyword><style  face="normal" font="default" size="100%">desbroce</style></keyword><keyword><style  face="normal" font="default" size="100%">fertilización</style></keyword><keyword><style  face="normal" font="default" size="100%">fitocidas (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">laboreo</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1977</style></year></dates><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">239-246</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The Cistus salviaefolius L. is an invading and competitive species in the pastures of Quercus súber covered mounts. In order to control it we carried out some triáis of (1) rotary cutting, (2) rotary cutting -+- ploughing and (3) rotary cutting + ploughing -+- fer- tilizing, under Q. súber trees that covered 40 % aind (4) rota'ry cutting in 25 % shade: The inventory of the number of plants shows according to the comparative plots which did not undertake any treatment at all, that the reinvasion is fast and very intense. In triáis with phytocides before emergence (atrazine, simazine, bromacil and diuron) the results of control of Cistus were not as good as the ones we got in the comparative plots that were just ploughed; and besides that they produced a lack of pasture for nearly two years. The phytocides did not damage the Q. súber when using those dosis. Those results have improved the knowledge of how meteorological factors could affect the germination abi'lity of Cistus salviaefolius, that could be useful for the coming studies directed to its control. 246</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Olea, Leopoldo</style></author><author><style face="normal" font="default" size="100%">Gallardo, D</style></author><author><style face="normal" font="default" size="100%">Paredes, J</style></author><author><style face="normal" font="default" size="100%">Martínez, a</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Resultado de los estudios regionales de introducción y adaptación de especies y variedades pascícolas en zonas semiáridas del SW español</style></title><secondary-title><style face="normal" font="default" size="100%">Pastos</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">fertilización</style></keyword><keyword><style  face="normal" font="default" size="100%">pastos</style></keyword><keyword><style  face="normal" font="default" size="100%">persistencia</style></keyword><keyword><style  face="normal" font="default" size="100%">suelo (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">variedades recomendadas</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1977</style></year></dates><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">210-222</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Results from a series of triáis conducced in S.W. Spain between 1972-1976 using different species and varieties of grasses and legumes indicated the advantages from fertilizer applications in all the áreas studied with the exceptions of &quot;La Serena&quot; and &quot;Palomas-Hornachos&quot;. Soil deph was also a major factor determining the success of pasture establishment and subsequently persistence and production. The Australian subclover cultivare used in these triáis did not generally persist adequately. It is tberefore concluded that there is a need to select &quot;local&quot; ecotypes of this species and of others species that are more adapted to the environmental conditions of the zone. More information is also required on the environmental factors, managerial practicas and agro- nomic characteristics that contribute to persistence of annual legumes. It is believed that persistence is the major determinant of success in pasture improvement involving the use of annual legumes; with perennial grasses in S.W. Spain, establishment appears to be major determinant. 222</style></abstract></record></records></xml>