Pregled bibliografske jedinice broj: 280369
Long-term trend in pre-grazing horizontal distribution of herbage mass in bahiagrass pasture (Paspalum notatum Flügge).
Long-term trend in pre-grazing horizontal distribution of herbage mass in bahiagrass pasture (Paspalum notatum Flügge). // Journal of Agriculture and Rural Development in the Tropics and Subtropics, 105 (2004), 1; 39-48 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 280369 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Long-term trend in pre-grazing horizontal distribution of herbage mass in bahiagrass pasture (Paspalum notatum Flügge).
Autori
Maćešić, Dubravko ; Hirata, Masahiko
Izvornik
Journal of Agriculture and Rural Development in the Tropics and Subtropics (0041-3186) 105
(2004), 1;
39-48
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Bahiagrass; Paspalum notatum F.; grazing; herbage mass; spatial heterogeneity
Sažetak
Grazing by cattle plays a main role in development of spatial heterogeneity in pasture and through it, as well, in stability of particular grazing system. In this study the first five years (1995-1999) of a long-term trial in pre-grazing distribution of herbage mass in bahiagrass pasture, utilised under the same repeated grazing management are shown. Herbage mass was non-destructively estimated with an electronic capacitance probe at 182, 50 by 50 cm locations along 2 permanent line transects. The changes in pre-grazing horizontal distribution of herbage mass during five grazing seasons were measured always on the same position on two transects just before the beginning of each grazing period (27 occasions). The pre-grazing herbage mass shows spatially heterogeneous distribution, as it was indicated by the coefficient of variation in the range from 0.221 (August 1998) to 1.107 (September 1995) for all measurement dates. This research had also the aim to quantify the stability of sward in a long-term distribution of pre-grazing herbage mass in bahiagrass pasture, and the calculated correlation coefficient of multilinear regression (r=0.612) was highly significant (P<0.001). Anyway, it is difficult to say weather this pasture is going to maintain the same spatial pattern of herbage mass in, for example, next five years. That is, to continue this research in the future is necessary task in obtaining more information about spatial heterogeneity of vegetation in bahiagrass pasture, and implication of agro ecological advantages to grazing systems.
Izvorni jezik
Engleski
Znanstvena područja
Poljoprivreda (agronomija)
