Nitrogen balance for potato crops in the southeast pampas region, Argentina

Giletto, Claudia Marcela; Echeverría, Hernán Eduardo

doi:10.1007/s10705-012-9549-2

Cited by 20 publications

(23 citation statements)

References 15 publications

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“…1b). N surplus has been calculated by taking the difference between corrected fertilizer N input and the N off-take which was estimated by assuming a fixed N content of 0.22% in fresh tuber yield (e.g., Giletto and Echeverria 2013).…”

Section: Indicatorsmentioning

confidence: 99%

Worldwide Sustainability Hotspots in Potato Cultivation. 2. Areas with Improvement Opportunities

et al. 2013

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Agriculture has a large impact on the environment and retailers increasingly stimulate their suppliers to reduce the environmental impact of agricultural production. The environmental impact resulting from producing a commodity can be measured with a life cycle analysis (LCA) but performing an LCA is costly and time-consuming. In the first paper of this series a practical and general method to identify hotspot areas in crop production on a global scale was developed. The method was implemented for potatoes. The objective of the work reported here was to evaluate the tool and to identify improvement opportunities for each of seven indicators: yield, erosion risk, nitrogen surplus, depletion of water reserves, biocide use, carbon footprint, and impact on biodiversity. The tool produces realistic outputs that can be used to target improve-ment efforts and thus improves the use efficiency of limited resources. The tool can be expanded to produce similar results for other crops; methods to improve the resolution of the tool are discussed.

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Section: Indicatorsmentioning

confidence: 99%

Worldwide Sustainability Hotspots in Potato Cultivation. 2. Areas with Improvement Opportunities

et al. 2013

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“…The risk of N losses from potato fields is further enhanced due to the shallow root system of the potato crop (Tanner et al, 1982), which has an inherently low N uptake efficiency (Errebhi et al, 1998; Zvomuya et al, 2003). Intense rainfall events and excessive rainfall during the growing season (Errebhi et al, 1998; Zvomuya et al, 2003; Cambouris et al, 2008; Ziadi et al, 2011), as well as irrigation (Zvomuya et al, 2003; Giletto and Echeverría, 2013) can also reduce N recovery by the potato crop, making the N susceptible to losses by leaching and denitrification. Hence, strategies to improve N management without negatively affecting yield or quality are needed.…”

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confidence: 99%

Potato Response to Nitrogen Sources and Rates in an Irrigated Sandy Soil

et al. 2016

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Management strategies to reduce N losses to the environment from potato (Solanum tuberosum L.) production while maintaining yields depend on selecting the right N source and rate. A 5-yr (2008-2012) fi eld experiment was conducted on an irrigated sandy soil in Quebec, Canada, to examine the eff ect of N fertilizer source and rate on total (TY) and marketable tuber yield (MY), total plant N accumulation (vines + tubers), specifi c gravity, culls (unmarketable tubers), and apparent fertilizer N recovery (ANR). Th e treatments included an unfertilized control, and three N sources [ammonium nitrate (AN), ammonium sulfate (AS), and polymer-coated urea (PCU)] applied at four rates (60, 120, 200, and 280 kg N ha -1 ). Th e PCU was applied 100% at planting and the AN and AS were applied 40% at planting and 60% at hilling. Th e TY and MY increased with N rate up to 200 kg N ha -1 , but were similar among the N sources. On average, total plant N accumulation and ANR were greater for AN and PCU than AS. However in 2008, when there was a greater risk of N loss due to high rainfall, total plant N accumulation and ANR were greater for PCU than AN and AS. Tuber specifi c gravity and culls were infl uenced by N rate, but the response was dependent on soil and climatic conditions. Results suggest that, under humid conditions with irrigation, a one

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“…The problem of nitrate‐N leaching loss has attracted serious attention with respect to dryland agriculture (Zhou et al., 2010). Soil surface mulching is one of the key factors affecting nitrate‐N leaching (Giletto et al., 2013). Yang, Lu, Tong, and Yin (2015) found that nitrate‐N leaching loss reaches 14–24 kg N ha −1 with a N application rate of 150 kg ha −1 in the absence of surface mulching on the Loess Plateau.…”

Section: Discussionmentioning

confidence: 99%

Winter wheat nitrogen utilization under different mulching practices on the Loess Plateau

et al. 2020

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Winter wheat (Triticum aestivum L.) is one of the most important cereal crops in the world, and mulching is mostly practiced in the semi-arid region of Northwest China. We examined the effect of different mulching practices on soil N, plant N uptake, N use efficiency and yield of wheat with similar fertilizer rate. The experiment was conducted for 5 yr with four replicates. The five practices included: Control (CK), nitrogen fertilizer and no mulching (NM), nitrogen fertilizer plus plastic film mulching (PM), nitrogen fertilizer plus ridge mulching and furrow seeding (RM+FS), and nitrogen fertilizer plus straw mulching (SM). We found that yield and biomass of winter wheat were significantly affected by different mulching practices during the five growing seasons. Compared to the NM treatment, the PM, SM, and RM+FS treatments increased grain yield by 13, 9, and 4%, respectively, and biomass by 19, 13, and 10%, respectively. Compared to the NM, the RM+FS and PM treatments tended to decrease average grain, straw, and chaff N concentration, while straw mulching tended to increase average grain, straw, and chaff N concentration. Compared to the NM treatment, all mulching treatments consistently increased NUE, and straw mulching had the most significant effect. Nitrate-N in the NM was most likely to leach into deep layers, followed by the SM and the lowest nitrate-N leaching risk was in the two plastic film mulching treatments. The PM could increase winter wheat yield and decrease the risk of nitrate-N leaching. Thus, PM performed better among the mulching practices.

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Nitrogen balance for potato crops in the southeast pampas region, Argentina

Cited by 20 publications

References 15 publications

Worldwide Sustainability Hotspots in Potato Cultivation. 2. Areas with Improvement Opportunities

Worldwide Sustainability Hotspots in Potato Cultivation. 2. Areas with Improvement Opportunities

Potato Response to Nitrogen Sources and Rates in an Irrigated Sandy Soil

Winter wheat nitrogen utilization under different mulching practices on the Loess Plateau

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