نتایج جستجو برای: pasture classification

تعداد نتایج: 500133  

2007
K. KAWAMURA

Increasing the current precision of nutrient management will need analytical tools that aid in collecting site specific data. A technology with potential is hyperspectral remote sensing. Modern, portable spectroradiometers permit reflectance data in the spectral region between 350 and 2500 nm to be collected quickly. With the limited sampling, handling, and processing required the technology al...

1999
C. C. Rhoades D. C. Coleman

The lower montane zone of northwestern Ecuador, like many parts of the tropics, is undergoing rapid conversion from native forest vegetation to crop and pastureland. The current landscape is a mosaic of agricultural land, forest fragments and secondgrowth vegetation in various stages of development. While there is abundant research documenting the e€ects of land-use change in the lowland tropic...

Journal: :Applied and environmental microbiology 2014
Babur S Mirza Chotima Potisap Klaus Nüsslein Brendan J M Bohannan Jorge L M Rodrigues

The Amazon rainforest, the largest equatorial forest in the world, is being cleared for pasture and agricultural use at alarming rates. Tropical deforestation is known to cause alterations in microbial communities at taxonomic and phylogenetic levels, but it is unclear whether microbial functional groups are altered. We asked whether free-living nitrogen-fixing microorganisms (diazotrophs) resp...

2018
João Serrano Shakib Shahidian José Marques da Silva Mário de Carvalho

The Montado is a silvo-pastoral system characterized by open canopy woodlands with natural or cultivated grassland in the undercover and grazing animals. The aims of this study were to present several proximal sensors with potential to monitor relevant variables in the complex montado ecosystem and demonstrate their application in a case study designed to evaluate the effect of trees on the pas...

Journal: :Meat science 2002
A Yang M C Lanari M Brewster R K Tume

Meat from pasture-fed cattle can have high contents of α-tocopherol and other anti-oxidants originating from naturally occurring compounds present in grasses. However, meat from pasture-fed cattle may have an increased demand for endogenous anti-oxidants because of its high content of polyunsaturated fatty acids, which in turn, may affect its colour and lipid stability. In the work described, w...

Journal: :Meat science 2004
C E Realini S K Duckett G W Brito M Dalla Rizza D De Mattos

Thirty Hereford steers were finished either on pasture (n=10) or concentrate (n=20) to determine dietary and antioxidant treatment effects on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. Half of the steers finished on concentrate were supplemented with 1000 I.U. vitamin E head(-1) day(-1) for 100 days. Postmortem vitamin C was added to ground beef (0.05% v/w) ...

Journal: :مرتع و آبخیزداری 0
فرهاد لشگرارا استادیار گروه ترویج و آموزش کشاورزی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران مجید رضا داورپناه کارشناس ارشد ترویج و آموزش کشاورزی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران سید اکبر جوادی : استادیار گروه مرتع داری ، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران

this study proceeded the identity of the shackles of participation pasture manageres about performance projects range- management to central part kohkiloie township. the purpose in this study was to identity of the shackles of participation pasture manageres about performance projects range- management to central part kohkiloie township. the present research is applied research by using descrip...

2000
L. CORKILL

PASTURE PRODUCTION is logically measured in terms of grazing animals supported by that pasture. A simple calculation based on stock numbers and area in grassland in New Zealand shows that over the last forty years carrying capacity has increased from 1.4 to 3.2 “sheep units” per acre, or 130% (N.Z. Official Year Book). Obviously many factors have contributed to this increase, including improved...

2011
R. R. Pullanagari I. J. Yule

Pasture quality is an important component in grazing and livestock management and a key driver of animal performance. Accurate, real-time information on pasture quality can help farm managers in decision making. This study investigated the potential applicability of optical sensors to estimate pasture quality parameters in the field, these have been trialled as part of the P21 Feed Programme, c...

2005
Dengsheng Lu Mateus Batistella Emilio F. Moran Evaristo E. de Miranda

Landsat Thematic Mapper (TM) data have been extensively used for land cover classification, but Terra ASTER and SPOT High Resolution Geometric (HRG) data applications are just beginning. This paper compares the capabilities of TM, ASTER, and HRG in land cover classification in the Amazon basin. Maximum likelihood classification was used for selected multi-sensor image classification. This resea...

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