1998
DOI: 10.1080/00103629809370160
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Comparison of wheat yield under uniform and variable rates of fertilizer on spatially‐eroded land

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Cited by 8 publications
(8 citation statements)
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“…They found yield components not to be significantly different between NSSM and a uniform rate. Bhatti et al (1998) compared uniform N application on wheat with variable rate application based on crop productivity patterns and found no difference in grain yield, while the site-specific approach used less total N. These inconsistent results may be due to complex interrelationships between wheat and soil characteristics.…”
Section: Introductionmentioning
confidence: 89%
“…They found yield components not to be significantly different between NSSM and a uniform rate. Bhatti et al (1998) compared uniform N application on wheat with variable rate application based on crop productivity patterns and found no difference in grain yield, while the site-specific approach used less total N. These inconsistent results may be due to complex interrelationships between wheat and soil characteristics.…”
Section: Introductionmentioning
confidence: 89%
“…Mulla et al (1992) created site‐specific management units (18.3 m by 564–655 m) based on preseason soil N (nitrate N and ammonium N) tests and available soil water content. Similarly, Bhatti et al (1998) created site‐specific N management units based on crop productivity. In both cases, site‐specific N reduced N fertilizer application up to 70% without a reduction in grain yield compared to a grower's practice.…”
mentioning
confidence: 99%
“…The spatial variability of nutrients in soils is much greater than that found in large-scale farming in developed countries (Jin 1998). The prevailing nutrient management technologies in developed countries, such as site-specific nutrient management (SSNM) (Mulla et al 1992, Kincheloe 1994, Sawyer 1994, Bhatti et al 1998, field-specific nutrient management (Scharf et al 1993, Olk et al 1999, Weisz et al 2001, Vanlauwe et al 2006 and pre-side dress soil nitrate-N test (Magdoff et al 1984, 1990, Fox et al 1989) are difficult to apply in China because of the expense of numerous soil sampling and testing costs (Bai andJin 2004, Zheng et al 2005). There are very few SSNM systems available in China (Chen and Zhang 2006), and excessive use of fertilizers in agricultural fields is common with detrimental impacts of excessive leaching of nitrate to groundwater and more diffuse contamination of surface waters by nitrogen (N) and phosphorus (P) (Zhu and Chen 2002).…”
Section: Introductionmentioning
confidence: 99%