Journal Title
Title of Journal: Nutr Cycl Agroecosyst
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Abbravation: Nutrient Cycling in Agroecosystems
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Publisher
Springer Netherlands
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Authors: Y K Soon S S Malhi Z H Wang S Brandt J J Schoenau
Publish Date: 2008/04/08
Volume: 82, Issue: 2, Pages: 149-160
Abstract
Crop yield and N uptake in semiarid environments are typically limited by available water and/or N Since remobilization of shoot N is a major source of grain N an understanding of how it is influenced by soil N and water supply and tillage is required In 2003 2005 and 2006 we determined the influence of N supply 0 or 60 kg fertilizer N ha−1 and tillage no tillage NT or conventional tillage CT on N translocation and N use efficiency of wheat Triticum aestivum L at Scott Saskatchewan Canada Wheat production and N use and their response to N fertilizer or tillage were largely influenced by water availability Wheat N uptake and remobilization were strongly correlated with normalized rainfall in May and June r = 0985 and 0935 respectively both significant at the P = 001 level In a moisturestressed year 2003 grain yield was higher under NT than CT and fertilizer N was ineffective due to low N demand Nitrogen application increased shoot dry matter DM and N uptake and remobilization only in 2006 a year with nearaverage precipitation In a wet and cool year 2005 wheat showed no response to tillage or fertilizer N as available soil N was high Root DM and N content varied slightly only with year or treatment When N uptake at heading was substantially greater than 100 kg ha−1 N loss occurred during plant senescence and it was higher with N fertilization in 2005 and 2006 Nfertilized wheat lost 33–35 kg N ha−1 Nitrogen use efficiency was 1 higher under NT than CT due to higher N utilization efficiency 2 higher with no added N due to higher uptake and utilization efficiencies and 3 low when water availability was low or excessive Tillage system had little effect on the uptake remobilization or loss of N Fertilizer N application in a year with average rainfall increased wheat production N accumulation and remobilization and N loss during senescence
Keywords:
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Other Papers In This Journal:
- Amending soil with used cooking oil to reduce nitrogen losses after cole crop harvest: a 15 N study
- Effects of fertiliser type and the presence or absence of plants on nitrous oxide emissions from irrigated soils
- Relative contribution of trees and crops to soil carbon content in a parkland system in Burkina Faso using variations in natural 13 C abundance
- Shrubs affect soil nutrients availability with contrasting consequences for pasture understory and tree overstory production and nutrient status in Mediterranean grazed open woodlands
- Forecasting long-term global fertilizer demand
- 15 N tracer technique analysis of the absorption and utilisation of nitrogen fertiliser by potatoes
- Nitrogen, phosphorus, and potassium budgets in Indian agriculture
- Effects of different manuring systems with and without biogas digestion on nitrogen cycle and crop yield in mixed organic dairy farming systems
- Crop response of aerobic rice and winter wheat to nitrogen, phosphorus and potassium in a double cropping system
- Net N immobilisation during the biodegradation of mucilage in soil as affected by repeated mineral and organic fertilisation
- Phosphorus and potassium cycling in a long-term no-till integrated soybean-beef cattle production system under different grazing intensities insubtropics
- Contribution of relay intercropping with legume cover crops on nitrogen dynamics in organic grain systems
- Method and timing of grassland renovation affects herbage yield, nitrate leaching, and nitrous oxide emission in intensively managed grasslands
- Mineralizable soil nitrogen and labile soil organic matter in diverse long-term cropping systems
- Accumulation of phosphorus fractions in typic Hapludalf soil after long-term application of pig slurry and deep pig litter in a no-tillage system
- Soil N 2 O fluxes in integrated production systems, continuous pasture and Cerrado
- Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe
- Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains
- Management strategies for reducing soil degradation through modeling in a GIS environment in northern Ethiopia catchment
- Millet nutrient use efficiency as affected by natural soil fertility, mineral fertilizer use and rainfall in the West African Sahel
- Nitrogen fertilization and critical nitrogen concentration for contemporary high yielding cotton under no-tillage
- Effects of catch crops on silage maize ( Zea mays L.): yield, nitrogen uptake efficiency and losses
- Nitrogen input, 15 N balance and mineral N dynamics in a rice–wheat rotation in southwest China
- Nutrient cycling in an agroforestry alley cropping system receiving poultry litter or nitrogen fertilizer
- How much nitrogen is fixed by biological symbiosis in tropical dry forests? 2. Herbs
- Nitrogen fertilizer placement and timing affects bread wheat ( Triticum aestivum) quality and yield in an irrigated bed planting system
- Nitrogen fixation of red clover interseeded with winter cereals across a management-induced fertility gradient
- Response of bulk chemical composition, lignin and carbohydrate signature to grassland conversion in a ley-arable cropping system
- Nitrogen recovery and downslope translocation in maize hillside cropping as affected by soil conservation
- Long-term effects of fertilization and manuring on groundnut yield and nutrient balance of Alfisols under rainfed farming in India
- Response of intensively grazed ryegrass dairy pastures to fertiliser phosphorus and potassium
- Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
- Above- and belowground litter stocks and decay at a multi-species afforestation site on arid, saline soil
- Productivity of yam-based systems with herbaceous legumes and short fallows in the Guinea-Sudan transition zone of Benin
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