搜索结果: 1-8 共查到“植物保护学 Perennial”相关记录8条 . 查询时间(0.142 秒)
Changes in weed species spectrum of perennial weeds on arable land, meadows and pastures
expansion perennial weeds
2015/3/3
Occurrence of selected perennial weeds has been monitored at control sites across the Czech Republic since 1989, and trends of their occurrence have been evaluated. The monitoring has been aimed mainl...
Spread Dynamics of Perennial Pepperweed (Lepidium latifolium) in Two Seasonal Wetland Areas
Wetlands riparian spread dynamics invasion spatial spread population growth
2015/12/26
Perennial pepperweed is an invasive plant that is expanding rapidly in several plant communities in the western United States. In California, perennial pepperweed has aggressively invaded seasonal wet...
Symbiosis of nodule bacteria with perennial xerophyte leguminous plants of Central Asia
Ammodendron conollyi Astragalus villossimus Astragalus unifoliolatus
2013/3/5
From nodules of perennial xerophyte desert leguminous plants – Ammodendron conollyi, Astragalus villossimus, Astragalus unifoliolatus – 151 bacterial isolates have been isolated. The study of nodulati...
Effect of perennial grasses ploughed in as green manure on the occurence of net blotch in spring barley
perennial grasses Drechslera teres net blotch disease incidence severity spring barley
2010/1/19
Effect of perennial grasses ploughed in as green manure on the occurence of net blotch in spring barley.
Perennial weed control by two layer ploughing
perennial weeds weediness organic agriculture two layer ploughing
2010/1/19
Experiments on methods of perennial weed control were carried out at the
organic farm of Lithuanian University of Agriculture in the period 2002-2003. The aim of the
work was to investigate the in...
EFFECT OF DIFFERENT PERENNIAL RYEGRASS SOWING METHODS ON THE OCCURRENCE OF SELECTED PESTS
perennial ryegrass Lolium perenne pests sowing method
2009/3/30
The turf-type perennial ryegrass, Stadion, was sown in the autumn and spring of 1998 and in 1999 in pure stand and as an undersown crop with spring barley cultivated for green matter and for grain. T...
Influence of shading and cutting down processing to the organogenesis of several native perennial weeds
native perennial weeds shading cutting down processing
2009/3/10
Influence of shading and cutting down processing to the organogenesis of several native perennial weeds.
Impact of perennial legumes and timothy as green manure on productivity of Secale cereale L. and x Triticosecale Wittm and on occurrence of cereal diseases
green manure Secale cereale L. x Triticosecale Wittm yield biological properties diseases
2010/1/15
In 2002–2005 experiments were carried out at the Lithuanian Institute of Agriculture’s Vėžaičiai Branch (West Lithuania) on a podzolized gleyic soil to study 1) the ecological significa...