scholarly journals Soil nutrient distribution on cattle farms in three physiographic regions of North Carolina

2020 ◽  
Author(s):  
Alan J. Franzluebbers ◽  
Matt H. Poore ◽  
Sharon R. Freeman ◽  
Johnny R. Rogers
Keyword(s):  
North Carolina ◽  
Soil Nutrient ◽  
Nutrient Distribution ◽  
Physiographic Regions ◽  
Cattle Farms

Effects of land use intensity on soil nutrient distribution after reclamation in an estuary landscape

2012 ◽  
Vol 28 (4) ◽  
pp. 699-707 ◽  
Author(s):  
Xiuzhen Li ◽  
Yongguang Sun ◽  
Ülo Mander ◽  
Yanlong He
Keyword(s):  
Land Use ◽  
Soil Nutrient ◽  
Land Use Intensity ◽  
Nutrient Distribution ◽  
Effects Of Land Use

scholarly journals Biocontrolled soil nutrient distribution under the influence of an oxalogenic-oxalotrophic ecosystem

2018 ◽  
Vol 425 (1-2) ◽  
pp. 145-160 ◽  
Author(s):  
Sophie Pons ◽  
Saskia Bindschedler ◽  
David Sebag ◽  
Pilar Junier ◽  
Eric Verrecchia ◽  
...  
Keyword(s):  
Soil Nutrient ◽  
Nutrient Distribution

Establishing soil nutrient distribution zones across free range egg farms to guide practical nutrient management strategies

2018 ◽  
Vol 257 ◽  
pp. 20-29
Author(s):  
Stephen Wiedemann ◽  
Chris Pratt ◽  
Naomi Bliefield ◽  
David G. Mayer ◽  
Matthew R. Redding ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Management Strategies ◽  
Soil Nutrient ◽  
Nutrient Distribution ◽  
Free Range

Study on Spatial Distribution of Soil Nutrients and Comprehensive Evaluation of Nutrients in Low Mountain-Hilly Region of Sichuan Province, China

2013 ◽  
Vol 295-298 ◽  
pp. 2544-2548
Author(s):  
Jiu Jin Xiao ◽  
Hong Xing Ma ◽  
Chuang Tai Lu
Keyword(s):  
Spatial Distribution ◽  
Agricultural Soils ◽  
Comprehensive Evaluation ◽  
Soil Nutrient ◽  
Sichuan Province ◽  
Available Phosphorus ◽  
Nutrient Distribution ◽  
Available Nitrogen ◽  
Total N ◽  
Hilly Region

It is generally accepted that to overuse fertilize can led to cause fertilize resource waste, increase agriculture production cost, reducing the quality of agricultural products, and cause agricultural non-point source pollution. Determining soil nutrient distribution is critical to identify sites which are at risk of N, P and K nutrition loading. In order to know the soil nutrition spatial distribution and to determine agricultural rational fertilization, a total of 98 soil samples from the plow layer (0-20 cm) were collected in low mountain-hilly region of Sichuan Province, China. Spatial variability and distribution of soil organic matter (SOM), total N (TN), available nitrogen (AN), available phosphorus (AP) and available potassium (AK) in agricultural soils were studied using geographic information system (GIS) software. And the analytical hierarchy process (AHP) was used to determine the weight of indexes by using quantitative analysis.

Prevalence of Salmonella in Diverse Environmental Farm Samples

2006 ◽  
Vol 69 (11) ◽  
pp. 2576-2580 ◽  
Author(s):  
ANDRES RODRIGUEZ ◽  
PHILIPUS PANGLOLI ◽  
HAROLD A. RICHARDS ◽  
JOHN R. MOUNT ◽  
F. ANN DRAUGHON
Keyword(s):  
North Carolina ◽  
Broiler Chicken ◽  
Intervention Strategies ◽  
Swine Production ◽  
Poultry Farms ◽  
Manual Methods ◽  
Salmonella Serovars ◽  
Cattle Farms ◽  
Farm Types ◽  
Production Facilities

The development of suitable intervention strategies to control Salmonella populations at the farm level requires reliable data on the occurrence and prevalence of the pathogen. Previous studies on Salmonella prevalence have focused on acquiring data from specific farm types and/or selected regions. The purpose of this study was to evaluate the distribution of this pathogen across a variety of farm types and regions in order to generate comparative data from a diverse group of environmental samples. Farm samples (n = 2,496) were collected quarterly from 18 different farms across five states (Tennessee, North Carolina, Alabama, California, and Washington) over a 24-month period. The participating farms included beef and dairy cattle operations, swine production and farrowing facilities, and poultry farms (both broiler chicken and turkey). The samples were analyzed for the presence of Salmonella by means of the U.S. Food and Drug Administration's Bacteriological Analytical Manual methods optimized for farm samples. Salmonella isolates were characterized by automated riboprinting. Salmonella serovars were recovered from 4.7% of all samples. The majority of positive findings were isolated from swine farms (57.3%). The occurrence of Salmonella was lower on dairy farms (17.9%), poultry farms (16.2%), and beef cattle farms (8.5%). The most commonly isolated serovar was Salmonella Anatum (48.4%), which was isolated notably more frequently than the next most common Salmonella serovars, Arizonae (12.1%) and Javiana (8.8%). The results of this study suggest that significant reservoirs of Salmonella populations still exist on swine production facilities and to a lesser extent in other animal production facilities. Data showed that the surrounding farm environment could be an important source of contamination.

Vegetation Change and Soil Nutrient Distribution along an Oasis-Desert Transitional Zone in Northwestern China

2007 ◽  
Vol 49 (11) ◽  
pp. 1537-1547 ◽  
Author(s):  
Bao-Ming Chen ◽  
Gen-Xuan Wang ◽  
Dong-Liang Cheng ◽  
Jian-Min Deng ◽  
Shao-Lin Peng ◽  
...  
Keyword(s):  
Vegetation Change ◽  
Soil Nutrient ◽  
Transitional Zone ◽  
Northwestern China ◽  
Nutrient Distribution

Soil Nutrient Distribution Under and Adjacent to Singleleaf Pinyon Crowns

1986 ◽  
Vol 50 (3) ◽  
pp. 788-792 ◽  
Author(s):  
Richard Everett ◽  
Steven Sharrow ◽  
Diana Thran
Keyword(s):  
Soil Nutrient ◽  
Nutrient Distribution

scholarly journals Effect of Land Cultivation on Soil Nutrient Sedimentation in Water at Southern China

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Jianshuang Gao ◽  
Yuhe Zhang ◽  
Zhuangzhuang Qian ◽  
Shunyao Zhuang
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Soil Erosion ◽  
Water Conservation ◽  
Southern China ◽  
Soil Nutrient ◽  
Nitrogen And Phosphorus ◽  
Nutrient Distribution ◽  
Significant Difference ◽  
Land Cultivation

Soil erosion associated with land cultivation exerts a great impact on ecological environment. Such an impact is specific of land, crop, tillage, management and so on. This study aimed to investigate the effects of crop cultivation on water quality by comparing nutrient distribution in the sediment at Southern China. Two sedimentation sites adjacent to the uncultivated (S1) and cultivated upland (S2) were selected and samples were analyzed. Results showed that soil pH decreased with the increasing depth above 20 cm and then kept relatively stable of the both sediments. Soil organic matter, nitrogen and phosphorus contents decreased with the increasing depth. There was no significant difference between two sediments in organic matter and nitrogen contents, but the total phosphorus and extractable phosphorus contents in S2 were much higher than that in S1. The data indicated that soil eroded from S2 could possess much high potential to deteriorate water quality. Nutrient sedimentation can reflect the history of soil erosion and provide useful information for sustainable soil management and water conservation through improving cultivation and tillage measures.

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