Nitrogen dynamics and leaching potential under conventional and alternative potato rotations in Atlantic Canada

Liang, Kang; Jiang, Yefang; Nyiraneza, Judith; Fuller, Keith; Murnaghan, Danielle; Meng, Fan‐Rui

doi:10.1016/j.fcr.2019.107603

Cited by 26 publications

(18 citation statements)

References 51 publications

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“…Similarly, potatoes produced in Canada and the Czech Republic, and cabbage produced in Turkey also contained lower concentrations of essential mineral elements in their edible parts and in the soil solution than reported in this experiment (Kiziloglu et al 2008;Bártová et al 2013;Liang et al 2019). However, Takahashi et al (2018) and Wen et al (2019) reported similar concentrations of N, P and K in cabbage and lettuce tissues when grown in soils well fertilized with N, P and K. Therefore, higher tissue N, P and K concentrations reported in the crops grown in this region would also be due to heavy N, P and K fertilization.…”

Section: Discussionsupporting

confidence: 59%

Accumulation of Essential Mineral and Toxic Trace Elements in Crops and Soils of Vegetable Cropping Systems in Central Highlands of Sri Lanka

Suriyagoda

Dissanayake

Kodithuwakku

et al. 2021

Preprint

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Background and Aims Vegetables are widely cultivated in high rainfall and mountainous regions in Sri Lanka with poor soil conservation practices. Accumulation of essential mineral and toxic trace elements in these soils and widely cultivated vegetable crops are not known. Methods One hundred soil and vegetable (i.e. cabbage, carrot and potato) samples were collected at the time of harvest and analysed for element concentrations. Key Results Soils contained very high concentrations of essential mineral and toxic trace elements. When compare edible parts, cabbage contained the highest concentrations of mineral and toxic trace elements, and potato contained lowest. Irrespective of the crop, edible parts contained high concentrations of N, P, K, (14-35, 2-6, 15-24 g kg−1, respectively), Cu, Zn, Mn (2.5-6.7, 11-30, 8-147 mg kg−1, respectively). Vegetables also contained As, Cd and Pb (0.04-1, 0.02-0.15, 0.02-0.26 mg kg−1, respectively), but didn’t exceed the maximum permissible limits. Irrespective of the crop 36-64 kg N, 6-11 kg of P, 35-45 kg K per ha were removed with the harvest. According to the current rate of vegetable consumption by a Sri Lankan adult (i.e. 240 g FW per day), per capita consumption of 0.05-0.2 mg Cu, 0.45-0.65 mg Zn and 0.5-2 mg Mn day−1through these vegetables was observed, i.e. 5-23% Cu, 7.5-11% Zn and 22-87% Mn of the recommended daily intake. Conclusion Vegetables grown in the region served as a key source of essential mineral elements. However, agronomic mitigation strategies are needed to improve soil health and sustainability of these cropping systems.

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Section: Discussionsupporting

confidence: 59%

Accumulation of Essential Mineral and Toxic Trace Elements in Crops and Soils of Vegetable Cropping Systems in Central Highlands of Sri Lanka

Suriyagoda

Dissanayake

Kodithuwakku

et al. 2021

Preprint

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“…It is a common practice in PEI to plow down red clover in fall to be able to seed potato as early as possible in the following spring but this has increased the risk of nitrate leaching over the winter and reduced N carried over to the subsequent crop [ 18 , 47 , 48 , 49 ]. Our results corroborated those findings, as red clover was associated with higher soil nitrate at the time of cover crop incorporation in comparison with other treatments.…”

Section: Discussionmentioning

confidence: 99%

Improving Soil Quality and Potato Productivity with Manure and High-Residue Cover Crops in Eastern Canada

Nyiraneza

Chen

Fraser

et al. 2021

Plants

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Under intensive low residue agricultural systems, such as those involving potato (Solanum tuberosum L.)-based systems, stagnant crop yields and declining soil health and environmental quality are common issues. This study evaluated the effects of pen-pack cow (Bos Taurus) manure application (20 Mg·ha−1) and cover crops on nitrate dynamics and soil N supply capacity, subsequent potato yield, selected soil properties, and soil-borne disease. Eight cover crops were tested and included grasses, legumes, or a mixture of legumes and grasses, with red clover (Trifolium pratense L.) used as a control. Forage pearl millet (Pennisetum glaucum L.) was associated with highest dry matter. On average, red clover had 88% higher total N accumulation than the treatments mixing grasses and legumes, and the former was associated with higher soil nitrate in fall before residue incorporation and overwinter, but this was not translated into increased potato yields. Pearl millet and sorghum sudangrass (Sorghum bicolor × sorghum bicolor var. Sudanese) were associated with lower soil nitrate in comparison to red clover while being associated with higher total potato yield and lower numerical value of root-lesion nematodes (Pratylenchus penetrans), although this was not statistically significant at 5% probability level. Manure incorporation increased total and marketable yield by 28% and 26%, respectively, and increased soil N supply capacity by an average of 44%. Carbon dioxide released after a short incubation as a proxy of soil microbial respiration increased by an average of 27% with manure application. Our study quantified the positive effect of manure application and high-residue cover crops on soil quality and potato yield for the province of Prince Edward Island.

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“…Many researchers have reported that more precise control of the total amount of applied nitrogen fertilizer could be an important measure for decreasing soil nitrogen loss 8 , 9 and the apparent nitrogen balance (the positive or negative value calculated from nitrogen input minus nitrogen uptake). High nitrogen inputs will likely increase the apparent nitrogen balance of soils 10 and result in greater accumulation of nitrate nitrogen in soil 11 , 12 and thus higher nitrogen pollution risk. In the cultivation of major cereals (maize, wheat and rice), “there are large opportunities to reduce the environmental impact of agriculture by eliminating nutrient overuse (especially nitrogen), while still allowing an approximately 30% increase in production” 13 .…”

Section: Introductionmentioning

confidence: 99%

The response of potato tuber yield, nitrogen uptake, soil nitrate nitrogen to different nitrogen rates in red soil

Liu

Zhong

et al. 2021

Sci Rep

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Nutrient-deficient red soil found in the southern region of China is increasingly being used for potato crops to meet the demand for this staple food. The application of nitrogen fertilizer is necessary to support the production of higher tuber yields; however, the links between nitrate nitrogen and the nitrogen balance in red soil are unknown. A field experiment was conducted in Jiangxi Province in 2017 and 2018 to determine the effects of different nitrogen application rates, 0 kg ha−1 (N0), 60 kg ha−1 (N60), 120 kg ha−1 (N120), 150 kg ha−1 (N150), 180 kg ha−1 (N180), 210 kg ha−1 (N210), and 240 kg ha−1 (N240, the highest rate used by local farmers), on potatoes growing in red soil. Data on tuber yield, crop nitrogen uptake, and the apparent nitrogen balance from the different treatments were collected when potatoes were harvested. Additionally, the content and stock of nitrate nitrogen at different soil depths were also measured. Nitrogen fertilization increased tuber yield but not significantly at application rates higher than 150 kg ha−1. We estimated that the threshold rates of nitrogen fertilizer application were 191 kg ha−1 in 2017 and 227 kg ha−1 in 2018, where the respective tuber yields were 19.7 and 20.4 t ha−1. Nitrogen uptake in potato in all nitrogen fertilization treatments was greater than that in N0 by 61.2–237% and 76.4–284% in 2017 and 2018, respectively. The apparent nitrogen surplus (the amount of nitrogen remaining from any nitrogen input minus nitrogen uptake) increased with increasing nitrogen application rates. The nitrate nitrogen stock at a soil depth of 0–60 cm was higher in the 210 and 240 kg ha−1 nitrogen rate treatments than in the other treatments. Moreover, double linear equations indicated that greater levels of nitrogen surplus increased the nitrate nitrogen content and stock in soils at 0–60 cm depths. Therefore, we estimate that the highest tuber yields of potato can be attained when 191–227 kg ha−1 nitrogen fertilizer is applied to red soil. Thus, the risk of nitrate nitrogen leaching from red soil increases exponentially when the apparent nitrogen balance rises above 94.3–100 kg ha−1.

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Nitrogen dynamics and leaching potential under conventional and alternative potato rotations in Atlantic Canada

Cited by 26 publications

References 51 publications

Accumulation of Essential Mineral and Toxic Trace Elements in Crops and Soils of Vegetable Cropping Systems in Central Highlands of Sri Lanka

Accumulation of Essential Mineral and Toxic Trace Elements in Crops and Soils of Vegetable Cropping Systems in Central Highlands of Sri Lanka

Improving Soil Quality and Potato Productivity with Manure and High-Residue Cover Crops in Eastern Canada

The response of potato tuber yield, nitrogen uptake, soil nitrate nitrogen to different nitrogen rates in red soil

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