Leaf morphogenesis as a basis for developing defoliation management strategies in multispecies plant communities of the Flooding Pampa (Argentina)

摘要：

The time of full expansion of the maximum number of leaves per tiller is considered an indicator of the optimal time between successive defoliations in terms of DM production, physiological status and efficiency of herbage utilisation ( Lemaire and Agnusdei, 2000).The leaf morphogenesis of three temperate grasses, two native perennials Hordeum stenostachys ( Hs), Stip a neesiana ( Sn) and one naturalised annual Lolium multi f lorum ( Lm) under natural field conditions was studied.The information was used to simulate the accumulated net leaf length per tiller ( ANLL ) under different defoliation regimes after complete defoliations.

关键词： Flooding Pampa leaf morphogenesis proper defoliation regime temperate natural grasslands

作者: A gnusdei M.G. M.R.Colabelli

作者单位: Instituto Nacionalde Tecnología Agropecuaria(INTA) Fac.Ciencias Agrarias,Univ.Nac.Mardel Plata.CC 276.7620 Balcarce.Argentina

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）