نتایج جستجو برای: stand establishment

تعداد نتایج: 101569  

Journal: :Agriculture 2022

The purpose of this research was to collect efficacy data on biological, biochemical, and chemical fungicide seed treatments hemp (Cannabis sativa L.) mitigate damping-off enhance field stand establishment. Seed were evaluated in fields New York (NY), North Dakota (ND), Virginia (VA) at two planting dates each state 2020. A single lot a dual-purpose (fiber + grain) cultivar (‘Anka’) treated usi...

2003
Arthur Groot Sylvie Gauthier Yves Bergeron

The objective of this paper is to discuss approaches and issues related to modelling stand dynamics for multi-cohort forest management in eastern Canadian boreal forests. In these forests, the interval between wildfires can be rather long, and the development of natural forest stands may include the establishment, growth and mortality of several cohorts of trees. Later cohorts are characterised...

2009
Don C. Bragg Eric Heitzman

This study describes the composition and structure of a mature, secondgrowth Pinus taeda (Loblolly Pine) and Pinus echinata (Shortleaf Pine)-dominated old-fi eld stand. Now owned by the University of Arkansas, this 22.5-ha parcel just outside of the city of Monticello, AR, has been protected as a de facto natural area since the 1950s. Many of the overstory pines exceeded 75 cm in diameter at br...

2008
Thomas A. Kurkowski Daniel H. Mann David L. Verbyla

Postfire succession in the Alaskan boreal forest follows several different pathways, the most common being self-replacement and species-dominance relay. In self-replacement, canopy-dominant tree species replace themselves as the postfire dominants. It implies a relatively unchanging forest composition through time maintained by trees segregated within their respective, ecophysiological niches o...

Journal: :Journal of animal science 2004
S A Gunter P A Beck

Tall fescue (Festuca arundinacea, Shreb.) is the predominant cool-season, perennial grass in the eastern half of the United States, and the majority is infected with the endemic endophyte (E+) Neotyphodium coenophialum, resulting in millions of dollars in revenues lost to the beef industry. Endophyte-free (E-) tall fescue was initially tapped as a "silver bullet" for the solution to fescue toxi...

امینی, الهه, اکرمی, سید محمد, حسین‌زاده, پیام, حنطوش‌زاده, صدیقه, رشیدی نژاد, علی, سجادیان, نگار, فخری, لعیا, نیکنام اسکویی, فریده,

Background: Neonatal deaths stand for almost two-thirds of all deaths occurring in infants under one year of age. Congenital anomalies are responsible for 24.5% of these cases forming a highly important issue for health policy-makers.Methods: We studied the pre-, peri- and post-natal conditions of 77 patients with multiple congenital anomalies (MCA) through genetic counseling at Several univers...

Journal: :Forests 2021

This study compared carbon (C) and nitrogen (N) distribution at a stand level in an exotic Japanese cedar (Cryptomeria japonica D. Don) plantation natural Serrata oak (Quercus serrata Murray) growing under similar site conditions South Korea. The aboveground biomass (stems, branches, leaves) of 20 trees (10 each species), the forest floor, mineral soils to depth 30 cm were sampled determine C N...

2015
Lars Rytter Karin Johansson Bo Karlsson Lars-Göran Stener

In this chapter we discuss tree species that exhibit rapid growth in northern Europe, i.e. the Nordic and Baltic countries. These species include both common indigenous species and introduced species. We continue with an evaluation of current breeding work and the genetic potential of species that may be suitable for biomass production in this region. Because short rotation times are commonly d...

Journal: :CoRR 2012
K. G. Preetha A. Unnikrishnan K. Poulose Jacob

Mobile Ad-hoc Networks (MANETS) is a collection of wireless nodes without any infrastructure support. The nodes in MANET can act as either router or source and the control of the network is distributed among nodes. The nodes in MANETS are highly mobile and it maintains dynamic interconnection between those mobile nodes. MANTEs have been considered as isolated stand-alone network. This can turn ...

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