Use of the Nitrogen Index to assess nitrate leaching and water drainage from plastic-mulched horticultural cropping systems of Florida

Marchi, Edilene Carvalho Santos; Zotarelli, Lincoln; Delgado, Jorge A.; Rowland, Diane; Marchi, Giuliano

doi:10.1016/j.iswcr.2016.12.001

Cited by 11 publications

(8 citation statements)

References 30 publications

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“…Nitrogen loss through nitrate leaching from the root zone of agricultural lands has a negative impact on the groundwater quality (Marchi et al, 2016) and can reduce soil fertility, thus affecting crop yields (Jabloun et al, 2015). In general, grasslands have a large nitrogen uptake capacity and therefore show a low nitrate leaching risk (Cameron et al, 2013).…”

Section: Potential Nitrate Leachingmentioning

confidence: 99%

Biogas residues in substitution for chemical fertilizers: A comparative study on a grassland in the Walloon Region

Tsachidou

Scheuren

Gennen³

et al. 2019

Science of The Total Environment

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To provide sufficient quantities of food and feed, farming systems have to overcome limiting factors such as the nutrient depletion of arable soils. Nitrogen being the main mineral element required for plant growth, has led to the extensive use of chemical fertilizers causing nitrogen pollution of the ecosystems. This field study investigates the use of biogas residues (BRs) as biofertilizers and their contribution to the mitigation of nitrate leaching in agricultural soils, while also demonstrating the polluting nature of chemical fertilizers. Nine different fertilization treatments classified in three schemes and two nitrogen doses were tested for three consecutive years on a grassland in the Walloon Region of Belgium. Residual soil mineral nitrogen, percentage contribution of treatments in residual nitrate and agronomic performance were assessed for each fertilization treatment. The results obtained showed significant differences on treatment and scheme level regarding nitrate accumulation in the soil, with chemical fertilizers posing the highest nitrate leaching risk. BRs did not cause nitrate accumulation in the soil, and were N rate and rainfall independent, while the chemical treatments indicated a cumulative tendency under high N rate and low precipitation. Forage yield did not demonstrate statistical differences on treatment and scheme level but varied with changing precipitation, while the maximum application rate suggested a

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Section: Potential Nitrate Leachingmentioning

confidence: 99%

Biogas residues in substitution for chemical fertilizers: A comparative study on a grassland in the Walloon Region

Tsachidou

Scheuren

Gennen³

et al. 2019

Science of The Total Environment

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“…This rate can be an average of 417 kg • ha -1 (Shukla et al, 2014) or higher (up to 470 kg • ha -1 ) (Cantliffe et al, 2009) for a single production season. Although N is considered to be the most limiting nutrient for most nonleguminous production systems, excessive applications of fertilizer and/or water could lead to nutrient losses from a cropping system (Marchi et al, 2016;Zotarelli et al, 2007). This is because N in the form of nitrate (NO 3 --N) has a high diffusivity rate in soil solution (Sato et al, 2009), resulting in high mobility in the soil, especially under saturated conditions.…”

mentioning

confidence: 99%

Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Ayankojo¹,

Morgan²,

Kadyampakeni³

et al. 2020

horts

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Effective nutrient and irrigation management practices are critical for optimum growth and yield in open-field fresh-market tomato production. Although nutrient and irrigation management practices have been well-studied for tomato production in Florida, more studies of the current highly efficient production systems would be considered essential. Therefore, a two-season (Fall 2016 and Spring 2017) study was conducted in Immokalee, FL, to evaluate the effects of the nitrogen (N) rates under different irrigation regimes and to determine the optimum N requirement for open-field fresh-market tomato production. To evaluate productivity, the study investigated the effects of N rates and irrigation regimes on plant and root growth, yield, and production efficiency of fresh-market tomato. The study demonstrated that deficit irrigation (DI) targeting 66% daily evapotranspiration (ET) replacement significantly increased tomato root growth compared with full irrigation (FI) at 100% ET. Similarly, DI application increased tomato growth early in the season compared with FI. Therefore, irrigation applications may be adjusted downward from FI, especially early during a wet season, thereby potentially improving irrigation water use efficiency (iWUE) and reducing leaching potential of Florida sandy soils. However, total marketable yield significantly increased under FI compared with DI. This suggests that although DI may increase early plant growth, the application of DI throughout the season may result in yield reduction. Although N application rates had no significant effects on biomass production, tomato marketable yield with an application rate of 134 kg·ha−1 N was significantly lower compared with other N application rates (179, 224, and 269 kg·ha−1). It was also observed that there were no significant yield benefits with N application rates higher than 179 kg·ha−1. During the fall, iWUE was higher under DI (33.57 kg·m−3) than under FI (25.57 kg·m−3); however, iWUE was similar for both irrigation treatments during spring (FI = 14.04 kg·m−3; DI = 15.29 kg·m−3). The N recovery (REC-N) rate was highest with 134 kg·ha−1 N; however, REC-N was similar with 179, 224, and 269 kg·ha−1 N rates during both fall and spring. Therefore, these study results could suggest that DI could be beneficial to tomato production only when applied during early growth stages, but not throughout the growing season. Both yield and efficiency results indicated that the optimum N requirement for open-field fresh-market tomato production in Florida may not exceed 179 kg·ha−1 N.

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“…For example, researchers in China created an integrated model for assessment of fertilizer management and quantitatively rank the potential risk to the environment effectively. Also, researchers in the U.S. concluded that the use of cover crops potentially reduces N leaching (Lei et al, 2010;Marchi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Economic Losses Associated With Nitrogen Leaching in Agricultural Land in Latvia

Siksnāne

Lagzdiņš

2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Water is significantly important resource in everyday life. Parameters that characterize the quality of water resources are affected by human activities. In Latvia, water pollution with nutrients is often related to agricultural activities. As water circulation is sustained and uninterrupted process, nitrogen compounds are lost throughout the hydrographic network and transported both locally and internationally. Increased levels of nitrogen in the water lead to intensive eutrophication processes in the inland water bodies and the Baltic Sea, therefore, availability of clean water is decreasing. It is necessary to minimize and prevent water pollution as much as possible. The aim of this research is to evaluate the economic losses caused by nitrogen leakage through agricultural drainage systems in Latvia. For this purpose, water protection regulations and agricultural runoff monitoring data are examined. Evaluation process of the economic losses includes a comparison of the maximum extent permitted rates of nitrogen application with the theoretical optimum application rates and application rates determined at the research sites. For calculations ammonium nitrate was used as a type of fertilizer. From the results of this research it can be concluded that in about 41% the amount of nitrogen needed to reach the current yield level was exceeded. In addition, on average 13.2% and 15.4% of nitrogen applied annually as mineral fertilizers are lost through the subsurface drainage systems at the Berze and Mellupite research sites, respectively. This causes economic losses to farmers on average 61.13 EUR ha-1 year-1.

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Use of the Nitrogen Index to assess nitrate leaching and water drainage from plastic-mulched horticultural cropping systems of Florida

Abstract: 2017-08-30T02:06:31

Cited by 11 publications

References 30 publications

Biogas residues in substitution for chemical fertilizers: A comparative study on a grassland in the Walloon Region

Biogas residues in substitution for chemical fertilizers: A comparative study on a grassland in the Walloon Region

Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Assessment of Economic Losses Associated With Nitrogen Leaching in Agricultural Land in Latvia

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