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Efficiency economics and environmental implications of

Sep 02 2007 0183 32 This study examined the P fertilizer industry in China in terms of P resource use efficiency economics and environmental risk and explored options for improvement through scenario analysis P resource use efficiency decreased from a mean of 71 before 1995 to 39 in 2003 ie from every 10 kg P in rock material only 39 kg P was used to...

Fertilizer Demand in China s Reforming Economy Request PDF

Inputs of large amounts of N fertilizer have brought about many malpractices low N use efficiency and low N fertilizer recovery have led to low economic returns and the processes of N behavior...

Nitrogen footprint and nitrogen use efficiency of

Jan 20 2019 0183 32 The global N fertilizer use of almost 110 Mt in 2014 is projected to increase to 135 and 236 Mt by 2020 and 2050 respectively Tilman et al 2001 N fertilizer use has increased particularly rapidly in China from 5 of the global consumption in 1961...

Market Outlook IFA2030

May 01 2019 0183 32 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 China Advanced economies Emerging market and developing economies World GDPGrowth 20 40 60 80 100 120 increasing calls to improve fertilizer use efficiency and nutrient recycling and mitigate the impact of N and P TANZANIA requirements for cyclical economy efficient...

PDF Nutrient/fertilizer use efficiency measurement

Nutrient use efficiency NUE is a critically important concept in the evaluation of crop production systems It can be greatly impacted by fertilizer management as well as by soil-and plant-water...

Balanced Fertilization on Cash Crops in Southwest China

Dec 18 2008 0183 32 Results showed that on the basis of NPK treatment missing anyone of the elements could decrease the use efficiency of the others N use efficiency NUE was increased within the range of fertilizer rates as 0 kg/ha 135 kg/ha for N or 0 kg/ha 240 kg/ha for P or 0 kg/ha 300 kg/ha for K As the N P and K application rates were beyond the...

Nitrogen use in the global food system past trends and

Sep 14 2016 0183 32 In some countries such as China Egypt or several European countries excessive use of fertilizers generates high N surpluses leading to dramatic environmental problems while in others eg several African countries low manure and fertilizer application rates deplete soil N reserves Vitousek et al 2009 Sutton et al 2013 Lassaletta et al...

Combined application of organic and inorganic fertilizers

Mar 23 2020 0183 32 This long-term study used a lysimeter platform to monitor the NH3 and N2O emissions of summer maize resulting from various fertilization treatments in the Huanghuaihai area with the goal to assess the efficiency of fertilization measures aimed at reducing NH3 and N2O losses during the production of summer maize the results provide a theoretical basis for synergistically improving maize...

Biofertilizers in China

about 30 percent of the world s fertilizers and pesticides on 9 percent of global cropland 3 According to the data from the National Bureau of Statistics by 2015 China s agricultural chemical fertilizer consumption exceeded 60 million tons the highest level in history 4 The use of chemical fertilizers...

Fertilizer use patterns in Yunnan Province China

Downloadable with restrictions Balancing the need to increase crop yields with the need to reduce the environmental impacts of fertilizers will pose major policy regulatory and extension challenges for China A growing number of studies have demonstrated the potential for improving fertilizer use efficiency in China but it is not clear how to achieve these efficiency improvements on a...

6 Fertilizer use

a Total NPK = total use / requirements in million tons N P 2 O 5 K 2 O b NPK use/ha is the use/requirement in kg N P 2 O 5 K 2 O per hectare of harvested land c FM FH LF = fertilizer scenarios FM = medium variant FH = high variant and FL = low variant of the medium production scenario The functions were used to reproduce the fertilizer use for the developing regions for 1990...

Contribution of improved nitrogen fertilizer use to

Request PDF On Jan 1 2014 D Powlson and others published Contribution of improved nitrogen fertilizer use to development of a low carbon economy in China Find read and cite all the...

Strategies for improving fertilizer phosphorus use

Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems Gu FENG 1 Jingping GAI 1 Xionghan FENG 2 Haigang LI 1 Lin ZHANG 1 Keke YI 3 Jialong LV 4 Yiyong ZHU 5 Li TANG 6 Yilin LI 7 1College of Resources and Environmental Sciences China Agricultural University Beijing 100193 China 2College of Resources and Environment Huazhong Agricultural...

Effects of different types of fertilizers application on

chemical fertilizer is rising rapidly and N and P have been overused in rice production leading to not only environmental pollution but also an increase in production cost Asman et al 1998 However the use efficiency of fertilizer is relatively low in China Jin 2012...

REGIONAL NUTRIENT USE EFFICIENCY TRENDS AND

This paper is based on the Nitrogen Use Efficiency NUE trends of six countries with different profiles Brazil China Denmark India Nigeria and USA and provides key insights about factors that could potentially favour or hinder fertilizer management improvements across different regions The importance of fertilizers for global food...

Effects of nitrogen split

use efficiency in crops including maize Muthukumar et al 2007 It improves the maize grain yield and increased the economic benefit from increased grain yield Sitthaphanit et al 2010 Most soils in Ethiopia are responsive to split-application of nitrogen Tolessa et al 1994 Presently a blanket...

Farm size and fertilizer sustainable use An empirical

Dec 01 2019 0183 32 The results show that 1 the average fertilizer use efficiency of whole samples was only 060 much lower than the average technical efficiency indicating that on average half of the fertilizer utilized are excessive in China and 2 the smallest farm size group get the highest fertilizer use efficiency score...

Assessment of productivity nutrient uptake and economic

Compared with N 100 N 75 OICF 25 resulted in a comparable or higher fertilizer use efficiency 03 and 47 for NAE and ANRE 03 and 32 for PAE and APRE 03 and -28 for KAE and AKRE However the fertilizer use efficiency when using N 50 OICF 50 and OICF 100 were lower than with N...

Effect of Different Fertilizer Treatments on

Abstract Due to high economic returns of vegetable production overdosing fertilizers by farmers is quite common in the vegetable bases in China Thus the purpose of this study was to determine the optimal fertilizer rates for eggplant one of the most widely winter grown vegetables in Hainan province...

Network resilience of phosphorus cycling in China has

1 1 Network resilience of phosphorus cycling in China has shifted by 2 natural flows fertilizer use and dietary transitions between 1600 and 3 2012 4 Sai Liang 1 Yadong Yu 2...

Efficiency economics and environmental implications of

consumers and producers of P fertilizers Thus P resource use efficiency in China has an important impact on the worldwide efficiency of P resource use This study examined the P fertilizer industry in China in terms of P resource use efficiency economics and environmental risk and explored options for improvement through scenario analysis...

Characteristics of Nitrogen Uptake Use and Transfer in a

growing crops in an intercropping system enhances N use efficiency by complementation rather than competition Xiao et al 2004 In addition N transfer from legumes to cereal also increases the N use efficiency Stern et al 1993 The increasing economic and environmental pressures of the excess N inputs have led researchers to focus on N...

Stupid apparent recovery efficiency ARE

Stupid apparent recovery efficiency ARE retarded advance of soil and fertilizer research in China International Symposium on Improvement of Nutrient Use Efficiency under Zero Growth of Chemical Fertilizers in China 20160318 Beijing Huo-Yan Wang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese...

Strategies for improving fertilizer phosphorus use

A four-year project entitled The mechanisms of fraction transformation and high use efficiency of P fertilizer in Chinese cropping systems commenced in 2017 The project was established to answer three key questions and looked at 17 cropping systems on ten soils...

Zero Growth of Chemical Fertilizer and Pesticide Use

In 2015 China s Ministry of Agriculture introduced two Actions that seek to achieve zero growth in the use of chemical fertilizer and pesticides by 2020 Success in reaching these targets will help control agricultural non-point source pollution increase cost efficiency energy conservation and emission reductions help to ensure the safety and quality of the national grain supply and...

Global nitrogen fertiliser demand and supply trend

Sep 20 2016 0183 32 Nitrogen Fertilizer Use Efficiency An Important Key Driver of Future Demand Nutrient use efficiency is an indicator of nutrient management performance which reflects the efficiency of uptake by crops of the nutrient input to a crop production system Norton et al 2015 recommend using the output/input ratio to monitor N use efficiency NUE...

Fertilizer Consumption Trends in China vs the Rest of the

IPNI International Symposium on Improvement of Nutrient Use Efficiency in China under Zero Growth of Chemical Fertilizers 17-18 March 2016 Beijing China 2012-14 and 2019 Outlook for Slow-and Controlled-Release and Stabilized Fertilizer Use in China...

PDF Chemical fertilizer use efficiency and its

May 10 2011 0183 32 Liu et al 2017 indicated that the mean fertilizer use efficiency of grain crops was 0603 in China from 1997 to 2012 and found higher fertilizer use efficiency in the eastern China...

Assessing fertilizer use efficiency and its determinants

Sep 01 2019 0183 32 Liu et al 2017 indicated that the mean fertilizer use efficiency of grain crops was 0603 in China from 1997 to 2012 and found higher fertilizer use efficiency in the eastern China compared with the central and western regions of China...

Effects of Nitrogen Inhibitors and Slow Nitrogen Releasing

Effects of Nitrogen Inhibitors and Slow Nitrogen Releasing Fertilizers on Crop Yield Nitrogen Use Efficiency and Mitigation of Nitrous Oxide N2O Emission Improving the production and productivity of crops through appropriate nutrient management including nitrogen fertilizer is one of the most important means to satisfy the food demand of the...