The efficiency of fertilizer nitrogen in irrigated, direct seeded rice (O. sativa L.) in Europe

Stutterheim, N.C.; Barbier, Jean Marc; Nougarèdes, Brigitte

doi:10.1007/bf00748942

Cited by 17 publications

(2 citation statements)

References 19 publications

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“…Cassman et al (1993) reported N fertilizer efficiencies ranging between 36 and 39% in two favorable irrigated rice domains in the Philippines. Stutterheim et al (1994) found even lower values analyzing data from 35 experiments performed between 1981 and 1991 in several European countries. Singh et al (1999) reported values between 12 and 42% for different fertilization levels.…”

Section: Introductionmentioning

confidence: 88%

The CropSyst model to simulate the N balance of rice for alternative management

Confalonieri

Gusberti

Bocchi

et al. 2006

Agron. Sustain. Dev.

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CropSyst is a mechanistic model developed for simulating the growth and development of potentially all herbaceous crops under potential and water/nitrogen (N)-limited conditions. Although the model has been widely used for many crops under different pedo-climatic and management conditions, studies on the simulation of water and N balance for flooded rice are lacking. We evaluated the CropSyst model for simulating the N balance of north-Italian rice fields for scatter-seeded rice grown under continuously flooded conditions. In order to calibrate and validate the model for the processes involved with soil N transformation, data collected in field experiments carried out in northern Italy between 2002 and 2004 were used. The results show the robustness of the model in reproducing the course of the measured soil mineral nitrogen content: the Modeling Efficiencies which describe the agreement between measured and simulated trends, are in most cases positive and the model error fell almost always within the experimental error on the measurements (P = 0.95). Moreover, the model showed the same level of reliability while simulating the nitrogen balances under different levels of nitrogen fertilization, thus depicting it as suitable for comparing N fertilization scenarios. This first attempt at using a model for simulating the nitrogen balance under flooded conditions encourages further studies because of the need of effective tools for optimizing the nitrogen management of flooded rice systems, considered significant sources of groundwater pollution and greenhouse gases in many European rice districts.

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Section: Introductionmentioning

confidence: 88%

The CropSyst model to simulate the N balance of rice for alternative management

Confalonieri

Gusberti

Bocchi

et al. 2006

Agron. Sustain. Dev.

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“…Stutterheim et al, 1994;Biloni and Bocchi, 2003) or in semi-controlled conditions of private farms (e.g. Haefele et al, 2003) in order to recommend fertilization techniques to farmers.…”

Section: Introductionmentioning

confidence: 99%

Fertilization Management of Paddy Fields in Piedmont (NW Italy)

Zavattaro¹,

Romani²,

Sacco³

et al. 2008

Ital J Agronomy

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A well-documented analysis of fertilization management techniques in use by farmers in a given region is the first step to improving the management standards of agronomic practices. The aim of this work was to summarize the fertilization management that farmers normally utilize for the rice crop in the Piedmont Region of Northwest Italy, and to analyze its agronomic and environmental sustainability. On average, 127 kg ha -1 of N, 67 kg ha -1 of P 2 O 5, and 161 kg ha -1 of K 2 O were applied to the rice crop. Inorganic fertilizers were used on most of the surface. Calcium cyanamide was the most widely used slow-release product. Commercial organic compounds were spread on about 32% of the paddy surface, while farmyard manure was distributed over 6% of the surface. Organic-mineral products were also widely used. One fourth of the paddy surface received only inorganic products. Using organic or organic-mineral fertilizers together with inorganic products was the most common strategy (55% of the paddy surface). In most cases, N and P fertilization was balanced with crop removal. The N soil surface balance was in the ± 50 kg range for 77% of the surface, P fertilization was less than removal for 53% of the surface, whereas K fertilization was excessive (surplus >100 kg ha -1 ) for 53% of the surface. The nutrient balance was affected by the widespread practice of burning straw after harvest (66% of the paddy surface). The farmers modulated fertilization according to the rice variety requirements and tolerance to high N supply. The largest nutrient surplus was associated with stocking farms. Inefficient use of fertilizers that should be avoided to improve the territorial nutrient balance were then outlined, and possible specific actions were proposed.

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