نتایج جستجو برای: orchards and fallow lands

تعداد نتایج: 16829604  

2016
Todd A Gaines Abigail L Barker Eric L Patterson Philip Westra Eric P Westra Robert G Wilson Prashant Jha Vipan Kumar Andrew R Kniss

Glyphosate-resistant (GR) Kochia scoparia has evolved in dryland chemical fallow systems throughout North America and the mechanism of resistance involves 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene duplication. Agricultural fields in four states were surveyed for K. scoparia in 2013 and tested for glyphosate-resistance level and EPSPS gene copy number. Glyphosate resistance was co...

2005
Sean W. Husheer Chris M. Frampton

This study uses data from forty-nine 20 m × 20 m permanent plots measured in 1976, 1982, 1989 and 1997-2002 in Wakatipu Forest, western Otago. We relate changes in red (Nothofagus fusca), silver (Nothofagus menziesii) and mountain beech (Nothofagus solandri var. cliffortioides) forest vegetation to the presence of fallow deer (Dama dama). Vegetation composition is likely to have been altered pr...

2002
S. A. El-Swaify

The ongoing diversification of agricultural lands in Hawaii to replace sugarcane and pineapple plantations is a major challenge. It presents an interesting case study for global concerns with land degradation-land use interaction. The important question posed by this paper is: will “diversified” crops have a different impact on the natural resource base and environmental quality from earlier cr...

2008
Allen Blackman

Historically, both conservation research and policy have concentrated on primary forests. Increasingly, however, the focus is being broadened to include human-dominated landscapes, such as agroforestry systems, managed forests, hedgerows, and fallow lands. One reason is that considerable research has demonstrated that such landscapes can provide many of the same ecological services as primary f...

2012
Ting Wu Yi Wang Changjiang Yu Rawee Chiarawipa Xinzhong Zhang Zhenhai Han Lianhai Wu

Apple production systems are an important component in the Chinese agricultural sector with 1.99 million ha plantation. The orchards in China could play an important role in the carbon (C) cycle of terrestrial ecosystems and contribute to C sequestration. The carbon sequestration capability in apple orchards was analyzed through identifying a set of potential assessment factors and their weight...

2017
Earl W. Campbell Ann E. Koehler Robert T. Sugihara

Roof rats (Rattus rattus) damage an estimated 5 to 10% of the developing nut crop in Hawaiian macadamia (Macadamia integrifolia) orchards. Relevant aspects of roof rat biology in macadamia orchards have and continue to be studied with the ultimate goal of developing an ecologically sound and cost-effective integrated pest management plan. The field component of a two-year study of roof rat popu...

2016
Dinh-Luan Nguyen Minh-Triet Tran

Face clustering is a task to partition facial images into disjoint clusters. In this paper, we investigate a specific problem of face clustering in videos. Unlike traditional face clustering problem with a given collection of images from multiple sources, our task deals with set of face tracks with information about frame ID. Thus, we can exploit two kinds of prior knowledge about the temporal ...

2011
Marco Santos Carlos Martinho

Gameplay in real-time strategy games seems somehow to be confined to a de facto standard where economical micromanagement is equally important as combat strategy, if not more important. To enable stronger combat-oriented gameplay without sacrificing other key aspects of the genre, we propose an automated system for scheduling unit training, which we believe may allow the exploration of new para...

2016
A. S. Gregory J. A. J. Dungait C. W. Watts R. Bol E. R. Dixon R. P. White A. P. Whitmore

Soil organic carbon (SOC) and nitrogen (N) contents are controlled partly by plant inputs that can be manipulated in agricultural systems. Although SOC and N pools occur mainly in the topsoil (upper 0.30 m), there are often substantial pools in the subsoil that are commonly assumed to be stable. We tested the hypothesis that contrasting long-term management systems change the dynamics of SOC an...

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