Agricultural land use practices and nitrate contamination in the Abbotsford Aquifer, British Columbia, Canada

Zebarth, Bernie J.; Hii, B.; Liebscher, Hugh; Chipperfield, K.; Paul, J. W.; Grove, Gary G.; Szeto, Sunny Y.

doi:10.1016/s0167-8809(98)00100-5

Cited by 78 publications

(63 citation statements)

References 18 publications

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“…Since it was not known how raspberry would respond to fertigation and the implications of its use to nitrate leaching, a field trial was conducted to compare the relative effectiveness of fertigation with the standard appli-cation of granular fertilizer on berry yield, plant growth and the potential for nitrate leaching as measured by extractable soil inorganic N at the end of the growing season. Although many different nutrients can be applied through the irrigation system, we chose to focus on nitrogen (N) because it was shown to influence berry yield (Kowalenko 1981) and because of the increasing concern about N management for raspberries in relation to nitrate leaching into the Abbotsford aquifer (Zebarth et al 1998). …”

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confidence: 99%

Comparison of nitrogen application via a trickle irrigation system with surface banding of granular fertilizer on red raspberry

Kowalenko¹,

Keng²,

Freeman³

2000

Can. J. Plant Sci.

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. 2000. Comparison of nitrogen application via a trickle irrigation system with surface banding of granular fertilizer on red raspberry. Can. J. Plant Sci. 80: 363-371. A field trial compared applications of ammonium nitrate N as soil-surface bands of granular fertilizer with applications as a solution through a trickle irrigation system (i.e., fertigation) on yield, plant growth and end-of-season extractable soil inorganic nitrogen of red raspberries (Rubus idaeous L.). The granular application was made once in early spring, and the fertigation was scheduled as eight weekly applications from early to late spring in each of 4 successive years. Three rates of N (33, 67 and 134 kg N ha -1 ) were applied by both methods and a zero N control was also included. The N treatments had relatively small effects on berry yields, being significant in the last 2 years (1988 and 1989) only. Applications of granular N resulted in equal or greater yields than the control, whereas the fertigation method resulted in equal or lower yields than the control. Granular applications tended to enhance cane growth and N concentrations in the fruiting cluster, laterals and leaves of fruiting canes. Leaching of N during the growing season was greater with the fertigation than with the granular method of application. The poorer performance of fertigation relative to granular application of N was due to the timing of application in relation to crop requirement. Raspberries require a majority of their N early in the growing season. The utility of applying fertilizer N via irrigation systems on crops such as raspberry in climatic regions where water deficits do not usually occur early in the growing season, as in coastal British Columbia, is limited. L'épandage en granulés était fait en une seule fois au début du printemps et la fertirrigation était répartie en 8 distributions hebdomadaires échelonnées du début à la fin du printemps dans chacune de quatre années successives. Trois doses de N: 33, 67 et 134 kg N ha -1 étaient utilisées dans chaque méthode, avec un traitement témoin sans N. La fumure N n'avait que relativement peu d'effet sur le rendement fruitier, les effets n'atteignant le niveau de significativité statistique que dans les deux dernières années, 1988 et 1989. L'épandage en granulés donnait lieu à des rendements égaux ou supérieurs à ceux obtenus sans fumure N, alors qu'en fertirrigation les rendements obtenus ne dépassaient pas ceux du traitement témoin. L'épandage sous forme de granulés paraissait stimuler la croissance des tiges fructifères et la concentration de N dans les grappes de fruits, dans les ramifications latérales et dans les feuilles. Le lessivage de N durant la saison de végétation était plus important en régime de fertirrigation qu'avec l'épandage en granulés. Les moins bonnes performances de la fertirrigation s'expliquent par le manque de concordance chronologique entre les apports de N et les besoins de la culture. Le gros des besoins en N du framboisier survient, en effet, ou début de la saison, si bien qu'...

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confidence: 99%

Comparison of nitrogen application via a trickle irrigation system with surface banding of granular fertilizer on red raspberry

Kowalenko¹,

Keng²,

Freeman³

2000

Can. J. Plant Sci.

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“…Based on a literature search, agricultural nitrate loading varies widely (Zebarth et al 1998;Gillham et al 1978). Therefore, it is not possible to simulate highly accurate nitrogen loading based on agriculture type.…”

Section: Agricultural Propertiesmentioning

confidence: 99%

Assessing risk to groundwater quality using an integrated risk framework

2013

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Risk to groundwater quality is defined as a function of susceptibility, hazard and consequence. Aquifer susceptibility combines the intrinsic susceptibility of the physical system with potential preferential pathways. Hazard threats are assessed based on the potential impact and probability of release. The consequence is the financial cost of the loss of the resource. The risk assessment methodology is applied to the Township of vi

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“…Aquifer types in the province have been classified [3] and various investigations have employed case-study type approaches to determine the status of groundwater resources, developed rigorous quantitative models of representative aquifers with predictive capacity, and attempted to assess future changes due to natural and/or anthropogenic forcings (see, e.g., ref. [4][5][6][7][8][9][10][11][12][13][14][15][16] and references therein). In our previous work, we examined temporal trends in groundwater monitoring wells for the western Canada prairie province of Saskatchewan [17].…”

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Historical temporal trends in groundwater levels from British Columbia, Canada

Rayne

Forest

2012

Nature Precedings

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(S. Rayne).Management of groundwater quantity and quality is an important resource development issue in Canada [1]. Overuse and/or contamination of groundwater supplies has the potential to restrict future use of this resource [2]. In the western Canadian coastal province of British Columbia, increasing attention is being paid to the scientific and legislative/regulatory aspects of surface and groundwaters. Aquifer types in the province have been classified [3] and various investigations have employed case-study type approaches to determine the status of groundwater resources, developed rigorous quantitative models of representative aquifers with predictive capacity, and attempted to assess future changes due to natural and/or anthropogenic forcings (see, e.g., ref. [4][5][6][7][8][9][10][11][12][13][14][15][16] and references therein). In our previous work, we examined temporal trends in groundwater monitoring wells for the western Canada prairie province of Saskatchewan [17]. We found that groundwater resources in this region generally appear to be increasing over time and do not appear to be under current threat from depletion. As part of the current study, we have conducted a similar investigation on time trends for groundwater monitoring well levels in British Columbia.Groundwater data was obtained from the British Columbia Ministry of Environment online Groundwater Observation Well Network database [18]. Trend data is available for a total of 210 groundwater monitoring well stations throughout the province (Figure 1 and Table 1) with end-of-month water levels (presented as meters below ground surface) over the period of record. Substantial end-ofmonth water level data gaps are present throughout the available historical record for the large majority of monitoring wells. At many sites, significant interannual variability in water levels is expected to have occurred due to natural and/or anthropogenic causes, precluding reliable reconstruction of complete inter-and intraannual monthly well level records using interpolative techniques. Consequently, the dataset was screened and correspondingly reduced to only include years with a complete set of monthly records. Average annual groundwater levels were calculated as the mean of the twelve individual endof-month groundwater levels for each year over the resulting usable historical record at each site. Temporal trends in average annual groundwater levels at each site were examined using standard parametric linear regression [19].Of the 210 groundwater monitoring well stations, 166 stations (79.0%) contained records of greater than two years (Table 2). The remaining stations had either 0, 1, or 2 years of complete annual records, and were not considered further. The average usable record length is 9.5 years with a standard deviation of 8.2 years and a range from 0 to 39 years. The majority (62.4%) of the usable record lengths are between 0 and 10 years, with 10% of the records at 0 years ( Figure 2). Only 10% of the records are longer than 21 years, and 1% of the ...

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Agricultural land use practices and nitrate contamination in the Abbotsford Aquifer, British Columbia, Canada

Cited by 78 publications

References 18 publications

Comparison of nitrogen application via a trickle irrigation system with surface banding of granular fertilizer on red raspberry

Comparison of nitrogen application via a trickle irrigation system with surface banding of granular fertilizer on red raspberry

Assessing risk to groundwater quality using an integrated risk framework

Historical temporal trends in groundwater levels from British Columbia, Canada

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