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dc.contributor.authorStakelum, G.*
dc.contributor.authorDillon, Pat*
dc.date.accessioned2014-07-21T11:40:38Z
dc.date.available2014-07-21T11:40:38Z
dc.date.issued2007
dc.identifier.citationG. Stakelum and P. Dillon. The effect of grazing pressure on rotationally grazed pastures in spring/early summer on subsequent sward characteristics. Irish Journal of Agricultural and Food Research 46: 15–28, 2007en_GB
dc.identifier.issn0791-6833
dc.identifier.urihttp://hdl.handle.net/11019/620
dc.descriptionpeer-revieweden_GB
dc.description.abstractTwo experiments (E1 and E2) were carried out to examine the effect of grazing pressure (GP) in the early part of the grazing season on subsequent sward composition. Three GP levels, equating to 6.35, 4.24 and 3.53 cows/ha in E1, and 6.06, 5.05 and 4.03 cows/ha in E2, were used. The GP treatments were applied between April and July in E1, and April and June in E2. As GP decreased different swards, termed high (HQ), medium (MQ) and low (LQ) quality, were created. The post-grazing sward heights at the end of the GP periods were 6.6, 10.5 and 14.6 (s.e. 0.78) cm in E1, and 5.9, 8.8 and 11.4 (s.e. 0.39) cm in E2, for HQ, MQ and low LQ, respectively. Organic matter digestibility coefficients for herbage from the HQ, MQ and LQ swards during the subsequent grazing cycles averaged 0.770, 0.729 and 0.702 (s.e. 0.0055) in E1, and 0.761, 0.731 and 0.711 (s.e. 0.0038) in E2, respectively. Average live leaf proportions of the HQ, MQ and LQ swards were 0.583, 0.427 and 0.329 (s.e. 0.0193) in E1, and 0.600, 0.474 and 0.362 (s.e. 0.0155) in E2, respectively. GP had a significant effect on the proportion of grass area categorised as short grass (SG). The proportions of SG area in HQ, MQ and LQ were 0.711, 0.579 and 0.445 (s.e. 0.0106), respectively, in E1, and 0.700, 0.556 and 0.441 (s.e. 0.0133), respectively, in E2. Pre-grazing herbage mass (dry matter above 45 mm) was 2,065, 2,736 and 3,700 (s.e. 144.1) kg/ha for HQ, MQ and LQ, respectively, in E1 and 2,688, 3,735 and 4,722 (s.e. 145.0) kg/ha for HQ, MQ and LQ, respectively, in E2. The results show the importance of early season grazing pressure in creating a leafy high-digestibility sward for the remainder of the grazing season.en_GB
dc.language.isoenen_GB
dc.publisherTeagasc, Oak Park, Carlow, Irelanden_GB
dc.relation.ispartofseriesIrish Journal of Agricultural and Food Research;vol 46
dc.subjectGrazing pressureen_GB
dc.subjectHerbage compositionen_GB
dc.subjectPost-grazing heighten_GB
dc.subjectStocking rateen_GB
dc.titleThe effect of grazing pressure on rotationally grazed pastures in spring/early summer on subsequent sward characteristicsen_GB
dc.typeArticleen_GB
dc.identifier.rmisMKDC-0255-5228
refterms.dateFOA2018-01-12T08:02:38Z


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