Effect Of Fertilization With N-P-K On Yield And Botanical Composition Of A Natural Pasture In Southern Italy,
2025
University of Naples
Effect Of Fertilization With N-P-K On Yield And Botanical Composition Of A Natural Pasture In Southern Italy, L Postiglione, F Basson, F Carone, E De Falco
IGC Proceedings (1977-2023)
The hilly dry environments of Southern Italy are characterized by native pastures greatly deteriored due to unfavourable and variable pedoclimatic conditions, mostly to the rainfall pattern during spring and summer. Also the irrational utilization and the uncorrect cultural techniques take part in very low yield of these large pasture areas. For these reasons the studies on rational utilization of pastures and on the various treatments are particularly interesting. Among these agronomic treatments, mineral fertilization plays a primary role due to the well-know marked influence on the amount seasonal distribution and quality of forage production: also the botanical composition, as well-known, …
Utilization Des Savanes Naturelles Par Des Troupeaux Bovins Allaitants En Guadeloupe,
2025
INRA-CRAAG
Utilization Des Savanes Naturelles Par Des Troupeaux Bovins Allaitants En Guadeloupe, M Naves, A Xande, F Vallee, O Coppry
IGC Proceedings (1977-2023)
Aux Antilles Frarn;aises, comme dans de nombreuses regions tropicales, les prairies naturelles et parcours occupent des surfaces importantes, principalement dans les zones seches. En Guadeloupe, ces paturages denommes « savanes » sont domines par la presence d'une graminee de valeur pastorale moyenne, le Dichanthium spp. Ils constituent la base des apports fourragers dans la plupart des exploitations orientees vers la production de viande bovine, basee sur des animaux de race locale Creole. Cependant le chargement est eleve et l'alimentation complementaire faible et irreguliere. La conduite de la reproduction est sommaire, avec des velages toute l'annee et aucune politique de sevrage …
Fire Effects On Herbage Yield And Nutritive Value Of Natural Grasslands In Uganda,
2025
Makerere University
Fire Effects On Herbage Yield And Nutritive Value Of Natural Grasslands In Uganda, E N. Sabiiti, R W. Wein
IGC Proceedings (1977-2023)
Fire has long influenced the development, maintenance and productivity of nearly 80% of the Uganda natural grasslands which are important for livestock grazing. However, traditional burning appears to reduce the productivity of these natural pastures, especially in the Acacia/savanna grassland since there is no proper fire regime (fire intensity, severity and frequency) used by these pastoralists/as there is limited research that gives reliable data on how to use prescribed fires on these pastures lands (Sabiiti et al., 1986; Sabiiti and Wein, 1987; Harrington, 1974). Consequently, most of these pastures have been invaded by coarse and less nutritive grass species …
Variability Of A Tropical Savannah And Its Influence On Management Practices And Animal Weight Gains,
2025
CIAT
Variability Of A Tropical Savannah And Its Influence On Management Practices And Animal Weight Gains, R R. Vera, B Rivera, J H. Weniger
IGC Proceedings (1977-2023)
The savannah of the Colombian and Venezuelan plains have been relatively well studied from a floristic point of view and several major plant communities are recognized (Blydenstein, 1967). Nevertheless, the potential contribution of these plant communities to ruminant production have not been studied, except for the largest of these associations, that of the welldrained high savannah. Paladines and Leal (1979) have shown that it has low carrying capacity and sustains low levels of animal production both per head and per animal, despite moderate levels of primary productivity. In effect, animal weight gains range from 70-90 kg head-1 and 18-40 kg …
Yield And Quality Of Signal Grass Stockpiled At Different Dates,
2025
EPAMIG and UFMG
Yield And Quality Of Signal Grass Stockpiled At Different Dates, E A. Pizzaro, R R. Vera
IGC Proceedings (1977-2023)
The savannas of the 'Cerrado' region of Brazil extend over 20 % of the brazilian territory, supporting over 50 % of the beef cattle industry (Kornelius et al., 1979). During the long dry season there is a pronounced deficit of quality in the natural savannas; conserved and standing crops (Pizarro and Vera, 1980; Paiva et al., 1978; Vera et al., 1981) pure legumes stands have been tested successfully to supplement the native vegetation (Tergas et al., 1983). Large leafy yields have been reported during the second half of the dry season (Vera et al., 1981 ; Pizarro et al., 1985). …
Comparing California Annual Grassland Management Beliefs With Evidence From The Field,
2025
USDA, Soil Conservation Service
Comparing California Annual Grassland Management Beliefs With Evidence From The Field, R J. King
IGC Proceedings (1977-2023)
Annual grasslands in California's Mediterranean climate are generally believed to have been dominated by perennial grasses prior to European settlement (Burchan, 1957 ; Heady, 1977). Numerous exotic annual species have been introduced, naturalized, and now dominate grassland communities. Overgrazing by domestic livestock and replacement by aggressive introduced annuals are regarded as the primary factors responsible for the displacement of perennial species. Range scientists and managers have established a doctrine that annual grasslands are now fundamentally different from perennial grasslands. The range management profession's current goal for proper grazing of annual grassland is simply to maintain adequate litter on the soil …
Study On The Grassland In The Yellow River Delta Of China,
2025
Shandong University
Study On The Grassland In The Yellow River Delta Of China, Zhou Guangyu, Li Xingdong
IGC Proceedings (1977-2023)
The Yellow River Delta is one of the three biggest deltas in China. It is situated in the northeast part of Shandong Province, from 37°20' to 38°12'N and from 118°30' to I 19°10'E. It is an important economic development area of Shandong Provmce. Grasslands are the main vegetation and the important agricultural resources in the Yellow River Delta. They had not been studied up to now, but for a long time they were reclaimed with the lack of management. According to the Vegetational Regination of China, this delta belongs to the warm temperate deciduous broad-leave) forest region (Wu Zhengyi et …
Distributions Of Yields And Nutritional Value In Native Pastures In South China,
2025
Guangxi Animal Science Research Institute
Distributions Of Yields And Nutritional Value In Native Pastures In South China, Zhiqiang Lai
IGC Proceedings (1977-2023)
There are about 40 millions ha of gqtzeable hill tussocky pastures in south China, generally with an elevation below 500 m and slopes between 6 to 30°. They are suited to ruminant animal husbandry with good rainfall, long growth period and a variety of high yielding plants. But most of the swards are improperly used and managed. This damages the pasture resources, and causes erosion due to overgrazing resulting in ecological unbalances and eventually, hazards the development of ruminant husbandry. The aim of this trial was, by studying the growth rhythm, seasonal distributions of the yield and nutritional value of …
Evoluation Et Perspectives De L'Etude Des Paturages D'Afrique Tropicale,
2025
IEMVT/CIRAD
Evoluation Et Perspectives De L'Etude Des Paturages D'Afrique Tropicale, A Gaston
IGC Proceedings (1977-2023)
L'elevage extensif est tributaire des problemes de sante animale, d'abreuvement et d'alimentation. Apres la 2e Guerre mondiale, l'elevage tropical africain etait confronte a de graves epizooties qui maintenaient le cheptel a un niveau relativement bas. Cette cause, et Jes effets benefiques d'une periode a precipitations satisfaisantes faisaient qu'il y avait peu de problemes d'abreuvement et d'alimentation d'autant plus que la transhumance etait pratique courante et facilitee par la faible implantation agricole. La prophylaxie a ete la priorite accordee a l'elevage. Les conditions climatiques permettaient !'existence de paturages de bonne qualite, mais certains etaient inutilisables par manque d'eau permanente. L'hydraulique pastorale …
The Influence Of Some Factors On The Production Of Mediterranean Pastures,
2025
Servicio lnvestigacion Agraria
The Influence Of Some Factors On The Production Of Mediterranean Pastures, M Espejo, J Bernardo, I Montero, L Garcia Barreto
IGC Proceedings (1977-2023)
In the grazing systems it is important to know the different methods for grass production with the objective of estimating the availability of pasture during the different seasons so as to adjust stocking rates and to make the necessary provision for the food shortage periods. There are several factors which influence pasture production, among them : type of soil, livestock, fertilization (Jimenez et al., 1976), climatology (Granda, 1981) and livestock management (Olea, 1982) are the most important ones. This work studies the influence of some of these factors under the environmental conditions of Southwest Spain.
Comportement Alimentaire D'Un Troupeau Ovin Dans Un Systeme ,
2025
Office de Development du Nord-Quest
Comportement Alimentaire D'Un Troupeau Ovin Dans Un Systeme , A Ben Boubaker
IGC Proceedings (1977-2023)
En Tunisie, pour freiner !'erosion et satisfaire Jes besoins pressants des animaux domestiques, des plantations de Acacia cyanophylla (Lindi) destinees a etre paturees ont ete creees. Pour rechercher une gestion rationnelle de ces parcours, nous avons etudie notamment le comportement des ovins dans un systeme « Acacia-herbe » partiellement fertilise. L'etude a ete realisee dans la region de Beja (Nord-Ouest de la Tunisie) sous climat mediterraneen sub-humide a hiver doux, sur sol brun calcaire (facies vegetal a Hedysarum coronarium L. et Phalaris truncata L.)
Etude De La Productivite Des Parcours De La Zone D'Ain Leuh (Moyen Atlas - Plateau Central),
2025
Ecole National Forestiere
Etude De La Productivite Des Parcours De La Zone D'Ain Leuh (Moyen Atlas - Plateau Central), M Qarro
IGC Proceedings (1977-2023)
Les aires de parcours des troupeaux, ovins et caprins, des tribus du Moyen Atlas sont constituees essentiellement de quatre types de formation vegetales (Qarro, 1980) : Chenaie verte a oxycedre en climat semi-aride du Plateau Central, chenaie verte pure en climat sub-humide du Dir, cedraie a sous-etage de chene vert et pelouses d'altitude asylvatiques des montagnes mesatlasiques humides. Etagees le long d'un gradient altitudinal, pluvial et thermique, ces formations jouent un role complementaire au cours du cycle pastoral. Cette complementarite explique qu'elles constituent un ensemble coherent, unifie par !es pratiques pastorales des tribus usageres. En general, la production en matiere …
Analyse De La Production Herbacee D'Un Paturage Boise Des Causses (Sud De La France),
2025
CEPE/CNRS
Analyse De La Production Herbacee D'Un Paturage Boise Des Causses (Sud De La France), D Hubert, P Boglio
IGC Proceedings (1977-2023)
Les Grand Causses s'etendent sur 300.000 ha a une altitude variant de 700 a 1100 m. Ce sont des plateaux karstiques subissant des influences climatiques, oceaniques, mediterraneennes et montagnardes. La temperature moyenne annuelle est voisine de 8°C, la temperature moyenne des minimas du mois le plus froid est de 4°C !es precipitations sont de 1000 mm en moyenne. Le climat est remarquable par ses« exces » (amplitudes thermiques, hygrometriques, violence des precipitations et du vent). Une grande partie du territoire (80 a 90 %) est couverte par des pelouses clairsemees se developpant sur des sols pauvres, superficiels, caillouteux. Ces sols …
Influence De L'Intensite Du Paturage Sur Le Cycle De Vie Des Especes Ligneuses D'Une Garrigue Du Sud De La France,
2025
Universite d'Alep
Influence De L'Intensite Du Paturage Sur Le Cycle De Vie Des Especes Ligneuses D'Une Garrigue Du Sud De La France, M Kawas, C Floret
IGC Proceedings (1977-2023)
Le present travail a eu pour but de mettre en evidence l'effet du paturage sur les especes vegetales spontanees de formations vegetales ligneuses (garrigues) au Nord de Montpellier (France). La zone d'etude est situee d'apres le climagramme pluviothermique d'Emberger, dans l'etage bioclimatique mediterraneen humide a hiver tempere Q = 132,9 ; m = 2,6 °C ; M = 27,7 °C; p = 961,8 mm). Ces garrigues sur sol calcaire dur ont ete soumises depuis des millenaires a !'impact de l'homme. Exploitees depuis longtemps, pour le bois, la culture et le paturage, et souvent brfi.lees, !es garrigues sont devenues des formations …
Year Round Protein Of Native Grasses Of Lesotho,
2025
Washington State University
Year Round Protein Of Native Grasses Of Lesotho, C J. Goebel, G Seutloal, V Ramakhula
IGC Proceedings (1977-2023)
Rangelands of Lesotho are primarily located in the "sour veld " region of southern Africa. Percentagewise, the lands are cxtc11sive and furnish large quantities of forage for various type, of grazing animals. Detailed information upon nutritive qua I I ty of the native grasses would be of major benefit to assist in planning rotation grazing programs during critical periods or the year. In addition, there is a need for information of the nutrttional quality of introduced grasses to Lesotho's rangelands.
Dynamique Du Systeme Herbager Installe En Guyane Francaise,
2025
Station de Recherches sur Jes Systemes Agraires
Dynamique Du Systeme Herbager Installe En Guyane Francaise, Mme Moise Bereau, J P. Gachet
IGC Proceedings (1977-2023)
En 1975-76, un « Plan de peuplement et de mise en valeur » de la Guyane Frarn;;aise est elabore. L'elevage bovin viande constitue un des elements essentiels du volet agricole et le choix est fait d'un systeme d'elevage intensif. En l'absence de references locales un programme de Recherches d'accompagnement est initie, c'est une Recherche dans le Developpement pour le Developpement.
Utilization De Parcours Par Des Ovins Laiteiers En Corse: Methodologie, Premiers Resultats,
2025
INRA
Utilization De Parcours Par Des Ovins Laiteiers En Corse: Methodologie, Premiers Resultats, Florence Volaire, F Vallerand
IGC Proceedings (1977-2023)
En Corse, la deprise agricole du debut de ce siecle a favorise !'emergence et la multiplacation d'elevages en « extensification passive» qui, du fait d'une faible pression animale sur le milieu, ne permettent plus un controle de la dynamique vegetale (Pernet et Lenclud, 1977). Dans ce contexte ou le maquis progresse, la production herbacee spontanee est limitee et essentiellement printaniere. Les elevages ovins laitiers de semi-montagne presentent ainsi un decalage chronique entre le cycle de la demande fourragere (maximum en automne-hiver du fait des mises-bas) et le cycle de l'offre permise sur parcours. Or ces derniers permettent de couvrir 90 …
Effect Of Slope Exposures On The Growth Of Tall Fescue And Bahiagrass In Subtropical Region Of Kyushu,
2025
Miyazaki University
Effect Of Slope Exposures On The Growth Of Tall Fescue And Bahiagrass In Subtropical Region Of Kyushu, M Ueno, Y Sugimoto, M Hirata
IGC Proceedings (1977-2023)
The effect of slope exposures on the development of vegetation seems so obvious that its importance needs not be emphasized. For example, when a survey was made on old pastures at lowland hills in southern Kyushu, temperate region grasses dominated on north-facing slope, while subtropical grasses predominantly occupied swards on south-facing slope (Nikki et al., 1981). Slope exposure can have a marked influence on climatic factors (Lambert and Robert, 1976). The purpose ofthis paper is to describe some functional relations between slope exposure influence relating to the microclimate and growth of cool season - or warm season grass species in …
Effects Of Straw Cover And Seed Burial On Changes In Hard Seededness Of Annual Medics,
2025
Pastoral Research Institute
Effects Of Straw Cover And Seed Burial On Changes In Hard Seededness Of Annual Medics, P E. Quigley, E D. Carter
IGC Proceedings (1977-2023)
Self-regenerating annual legumes, including subterranean clover and medics (Medicago spp.) are important pasture species in the cereal-livestock production zone of southern Australia and other Mediterranean climatic zones of the world. The pattern of germination in the genus Medicago, in which only a small percentage of seed germinates at one time because of hard-seededness has many ecological advantages particularly for the successful dissemination and colonization of medics. When medic pastures are incorporated into rotation systems with field crops the hard-seededness trait enables the medic seed population in the soil to survive periods of one, two or possibly three or more …
Seed Reserve And Self-Regeneration Of Annual Medic Pastures In A Mediterranean Environment,
2025
lnstitut Agronomique et Veterinaire Hassan II, Rabat, and lnstitut National de Recherche Agronomique
Seed Reserve And Self-Regeneration Of Annual Medic Pastures In A Mediterranean Environment, T E. Ameziane, M Mazhar, O Berkat
IGC Proceedings (1977-2023)
In the Mediterranean Basin, a growing concern towards the adoption of the South Australian dryland farming technology, known as the ley-farming system, is observed, particularly in countries of North Africa and West Asia. It is widely believed that tremendous agricultural productivity of these countries would result from the use of annual self-regenerating pasture legumes in rotation with cereals (e.g. Carter, 1978). However, it is also recognised that some targetted agronomic research should be conducted locally if transfer of this technology is to be feasible (Boyce et al., 1985; Mazhar, 1987). Field research involving the study of relevant principles of the …
