نتایج جستجو برای: soil fertilization

تعداد نتایج: 209617  

Journal: :FEMS microbiology ecology 2015
Ning Wang Long-Jun Ding Hui-Juan Xu Hong-Bo Li Jian-Qiang Su Yong-Guan Zhu

Fertilization affects bacterial communities and element biogeochemical cycling in flooded paddy soils and the effect might differ among soil types. In this study, five paddy soils from Southern China were subjected to urea addition to explore impacts of fertilization on nitrogen oxide (N2O) emission and bacterial community composition under the flooding condition. 16S rRNA gene-based illumina s...

Journal: :Scientific reports 2016
Wei Liu Yunlong Zhang Shanshan Jiang Yan Deng Peter Christie Philip J Murray Xiaolin Li Junling Zhang

Understanding the diversity and community structure of arbuscular mycorrhizal fungi (AMF) is important for potentially optimizing their role in mining phosphorus (P) in agricultural ecosystems. Here, we conduct a comprehensive study to investigate the vertical distribution of AMF in a calcareous field and their temporal structure in maize-roots with fertilizer P application over a three-year pe...

Journal: :Journal of environmental quality 2004
A J Franzluebbers S R Wilkinson J A Stuedemann

An understanding of the long-term cycling of trace elements in soil with broiler litter fertilization under various forage utilization strategies is needed to develop sustainable agricultural production systems. We evaluated differences in Cu, Mn, Zn, and six other trace elements in response to 5 yr of bermudagrass [Cynodon dactylon (L.) Pers.] management varying in fertilization and harvest st...

2015
A. HUSSAIN M. ARSHAD Z. AHMAD H. T. AHMAD M. AFZAL M. AHMAD

1 Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan 2 Department of Soil Science, College of Food and Agricultural Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia ABSTRACT. A pot experiment in wire house was conducted to investigate the effect of potassium fertilization on physiology, growth and nutrient uptake of maize. Surface soil s...

2001
W. Chen W. P. McCaughey C. A. Grant L. D. Bailey

Chen, W., McCaughey, W. P., Grant, C. A. and Bailey, L. D. 2001. Pasture type and fertilization effects on soil chemical properties and nutrient redistribution. Can. J. Soil Sci. 81: 395–404. Soil samples were collected from beef pastures varying in species composition and fertilizer inputs after being grazed by cow-calf pairs for 4 yr (1995–1998) near Brandon, Manitoba. The objective of this e...

Journal: :Tree physiology 2010
Nathan M Kleczewski Daniel A Herms Pierluigi Bonello

Paper birch (Betula papyrifera Marsh) seedlings were grown in a greenhouse in either subsoil or topsoil in factorial combination with two fertilization and drought regimes to investigate how different soil environments and nutrient availability drive belowground partitioning between growth, secondary metabolism and ectomycorrhizal (EM) associations, and impact drought tolerance of paper birch. ...

2013
Khosro Mohammadi

Fertilization plays an important role in crop growth and soil improvement. This study was conducted to determine the best fertilization system for wheat production. Experiments were arranged in a complete block design with three replications in two years. Main plots consisted of six methods of fertilization including (N1): farmyard manure; (N2): compost; (N3): chemical fertilizers; (N4): farmya...

2008
A. Abril L. Roca

There is great concern worldwide about air and water pollution arising from N-fertilizer. Considering the expansion of agriculture and fertilization practices in Argentina, the objective of this study was to determine the effect of Nfertilizers on soil N dynamics and then relationship with nitrate concentration in aquifers. Soil samples were taken during a maize crop cycle in two agricultural f...

2015
Xiaoying Zhan Li Zhang Baoku Zhou Ping Zhu Shuxiang Zhang Minggang Xu Wenju Liang

The Olsen phosphorus (P) concentration of a soil is a key index that can be used to evaluate the P supply capacity of the soil and to estimate the optimal P fertilization rate. A study of the relationship between the soil Olsen P concentration and the P balance (P input minus P output) and their variations among different fertilization patterns will help to provide useful information for proper...

Journal: :Communications in agricultural and applied biological sciences 2010
B De Cauwer K Van den Berge M Cougnon R Bulcke D Reheul

Fertilizer amendments can impact weed populations in a variety of ways. This study evaluated the effects of 12 year-long applications of different fertilization systems on size and composition of the weed seed bank in a conventionally managed maize monoculture field. Fertilization systems included all factorial combinations of two dairy cattle slurry rates, three vegetable, fruit and garden was...

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