The challenge to improve nitrogen-use efficiency in broadacre dryland farming of Western Australia
Dryland farming of winter crops in Western Australia (WA) is about risk management. The agronomic Nitrogen-Use Efficiency (NUE), for example, is extremely variable and demonstrates this risk for growers. Among other factors, variation in NUE reflects fluctuating...
Optimising Nitrogen release in an agroforestry system
Nitrogen release through litter decomposition is a major source of nutrient return into the soil for improved crop production. This study was carried out to investigate rate of leaf litter decomposition and nitrogen release of three agroforestry speciesAnnona muricata...
Assessment of required increases in nitrogen use efficiencies in agriculture
Nitrogen (N) inputs in agriculture increased food production but also caused several environmental impacts. We present a spatially explicit estimation of required nitrogen use efficiencies (NUEs) to attain either current crop yields and target crop yields while...
Changed crop type and crop rotation as a measure to increase N use efficiency
This paper presents a method to estimate effects of crop type and crop rotation conversions on N-leaching, economic costs and N efficiencies. Results for a Danish watershed, with intensive agriculture and livestock production and a high need for reduced N leaching,...
Increasing nitrogen use efficiency by new designed cropping systems in an intensive agricultural region of China
15Nitrogen (N) tracer experiment in an intensive agricultural region of China (North China Plain) was conducted to investigate the grain yields, fertilizer N use efficiency (FNUE) and the fate of fertilizer N in the new designed cropping systems as compared with the...
Coffee plants have low NUE
Coffee is produced in tropical and subtropical zones, is widely consumed worldwide, and is highly responsive to N. Little is now about how coffee uses N fertilizer. Using data of N fertilization and N export from 468 sites/years along 20 years from intensive coffee...
Effect of conservation agriculture and integrated soil fertility management on urea nitrogen use efficiency
An experiment was carried out in a sub-humid and a semi-arid agro-ecologies in Kenya to evaluate the effects of conservation agriculture (CA) and/or Integrated Soil Fertility Management (ISFM) on maize (Z. mays) nitrogen use efficiency (NUE). Rain-fed maize crop was...
Is Early Sowing of winter cereals as effective as Catch Crops in Increasing Nitrogen Use Efficiency in Cropping Systems?
To evaluate the effects of early seeding of a winter cereal and the use of catch crops on nitrate leaching and grain yield a long-term experiment was set up in 2015 in two different climates in Denmark. The main crops were either continuous winter cereals or spring...
Nitrogen use efficiency indicators designed for the diversity of global dairy production systems
Whole-farm nitrogen (N) budgets are determined to derive N use efficiency (NUE) and N balance estimates, useful for assessing the risk of N losses for dairy production systems. Component-based N indicators, applicable for the cycling of N through the soil,...
Nitrogen use efficiency in global animal production systems 1970 – 2015
Global animal production increased considerably in the period 1970 - 2015. Global animal numbers have also increased but not as fast as animal production. Nitrogen use efficiency can be studied at three levels, namely animal level, farm level with animals, and...