INORGANIC NITROGEN LEVELS AND NITRIFICATION POTENTIAL IN LOWBUSH BLUEBERRY SOILS

1988 ◽  
Vol 68 (1) ◽  
pp. 63-75 ◽  
Author(s):  
LEONARD J. EATON ◽  
DAVID G. PATRIQUIN
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Soil Nitrogen ◽  
Plant Uptake ◽  
Inorganic Nitrogen ◽  
Garden Soil ◽  
Laboratory Studies ◽  
Vaccinium Angustifolium ◽  
Nitrogen Levels ◽  
Lowbush Blueberry

Soil ammonium and nitrate in the top 15 cm of soil were monitored after application of ammonium nitrate and ammonium sulfate to plots at 14 PF (previously fertilized) and 12 NF (never fertilized) lowbush blueberry (Vaccinium angustifolium Ait.) stands representing a range of soil types and management histories. Overall, nitrate values in unfertilized and ammonium sulfate plots were higher at PF than at NF sites, suggesting greater nitrification at PF sites. In laboratory incubation studies, nitrification proceeded immediately in soil from a PF site, but only after a 4-wk lag in that from an adjacent NF site. Nitrification rates were low compared to that in a garden soil (pH 6.6). N-Serve inhibited nitrification in both soils. In ammonium nitrate plots, "excess" N values (N values in fertilized plots minus values in unfertilized plots) were higher for PF than for NF sites, suggesting greater immobilization, plant uptake or loss of N at NF sites. There was no evidence, in laboratory studies, of immobilization of added N by soil from either type of site. Rhizome N concentration increased significantly in response to fertilization at an NF site, but not at a PF site. Key words: Blueberry (lowbush), fertilizer and soil nitrogen

Effect of nitrogenous fertilisers on soil inorganic nitrogen levels and uptake by wheat on very acid soils

1989 ◽  
Vol 29 (6) ◽  
pp. 837
Author(s):  
MG Mason
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Inorganic Nitrogen ◽  
Acid Soils ◽  
Nitrogen Levels ◽  
Nitrate N ◽  
Ammonium N ◽  
Rate Of Decline ◽  
Fertiliser Application ◽  
Plant Sampling

Urea, ammonium sulfate and ammonium nitrate were compared as sources of nitrogen (N) for wheat grown on very acid soils at 2 sites in 1980, in the absence of lime or where lime at 2 t/ha was incorporated into the top 10 cm of soil. The plots were soil sampled each week for the first 5 weeks after sowing, and further samples were collected at 9 weeks. Wheat tops were sampled 4 times during the first 6 weeks after sowing. Soils and plants were analysed for ammonium-N and nitrate-N. Application of each fertiliser initially caused increased soil levels of ammonium-N which fell with time at both sites. Increases in nitrate-N were small and were usually not significant. At 1 site (Bunketch), and with ammonium sulfate as the N source when no lime was added, there was a slower rate of decline in ammonium-N than in the presence of lime. Fertiliser type did not result in any significant differences in ammonium and N concentrations in the soil, apart from the higher levels of nitrate-N in the ammonium nitrate treatments. At both sites and particularly at Perenjori both in the absence and presence of lime, nitrate-N concentrations in plants were higher for the treatments with N fertiliser than for the unfertilised controls. This suggests that the N applied as fertiliser ammonium is nitrified before it is taken up by the plants. At the first plant sampling at Perenjori and at the first 2 samplings at Bunketch, ammonium-N levels in the fertilised plants were higher than in the unfertilised plants, suggesting that ammonium-N was readily taken up by the plants. Plant nitrate levels were lower at Bunketch in the absence of lime, than where lime was added. Grain yields were significantly increased at both sites by N fertiliser application. The 3 fertilisers were equally effective and there was no significant response to lime. Both nitrate and ammonium-N appeared to be readily utilised by the plant.

Long-term effects of herbicide and fertilizers on lowbush blueberry growth and production

1994 ◽  
Vol 74 (2) ◽  
pp. 341-345 ◽  
Author(s):  
Leonard J. Eaton
Keyword(s):  
Reproductive Development ◽  
Fresh Fruit ◽  
Long Term Effects ◽  
Vaccinium Angustifolium ◽  
Nitrogen Levels ◽  
Lowbush Blueberry ◽  
Production Cycles ◽  
Npk Fertilizer ◽  
Vegetative And Reproductive Growth

Effects of herbicide and herbicide-fertilizer combinations on vegetative and reproductive growth of the lowbush blueberry (Vaccinium angustifolium Ait.) were assessed over a 12-yr period (six production cycles). All treatments stimulated stem lengths, fruit buds per stem and fresh fruit yields compared with untreated controls, but only after 3–6 yr. After the second cycle, stem lengths and fruit bud numbers were greater in herbicide + NPK-treated plants than in all others. Fresh fruit yields were variable throughout the study but were higher in herbicide and herbicide + fertilizer plots than in untreated controls after 1982, except in 1988. Nitrogen levels were greater in leaves and rhizomes of plants in all herbicide and herbicide + fertilizer plots than in control plots after 10 yr, whereas phosphorus was higher only in plants fertilized with NPK. These results suggest the lowbush blueberry responds slowly to herbicide and fertilizer applications. Increased vegetative and reproductive development, as well as denser plant stands, resulted from repeated herbicide and fertilizer applications. Fertilizers applied in conjunction with herbicides stimulate vegetative growth (and fruit buds if an NPK fertilizer), but appear to have no consistent effect on fresh fruit yields. Key words:Vaccinium angustifolium, fertilizer, herbicide, fruit buds, yield

The influence of two soil nitrogen levels on the utilisation of15N-labelled ammonium nitrate by ryegrass

1986 ◽  
Vol 37 (5) ◽  
pp. 454-460 ◽  
Author(s):  
R. James Stevens ◽  
Harry I. Gracey ◽  
Ronald J. Laughlin ◽  
Hubert J. Logan
Keyword(s):  
Ammonium Nitrate ◽  
Soil Nitrogen ◽  
Nitrogen Levels

scholarly journals Influence of Nitrogen Sources Applied by Fertigation to an Enriched Soil with Organic Compost on Growth, Mineral Nutrition, and Phytochemicals Content of Coriander (Coriandrum sativum L.) in Two Successive Harvests

Plants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 22
Author(s):  
Rui M. A. Machado ◽  
Isabel Alves-Pereira ◽  
Yasmin Faty ◽  
Sara Perdigão ◽  
Rui Ferreira
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Mineral Nutrition ◽  
Inorganic Nitrogen ◽  
Nitrogen Sources ◽  
Dry Weight ◽  
Nitrogen Addition ◽  
Total Phenols ◽  
Shoot Dry Weight ◽  
Organic Compost

The aim of the present study was to evaluate the effects of nitrogen source applied by fertigation to an enriched soil with organic compost on plant growth, mineral nutrition, and phytochemical contents in two successive harvests in coriander. The treatments were as follows: unfertilized soil, soil enriched with organic compost, and soil enriched with organic compost to which 60 kg N ha−1 as ammonium nitrate and as ammonium sulfate applied by fertigation were added. Ammonium nitrate addition allowed to obtain a high total fresh yield (3.6 kg m−2) with a low inorganic nitrogen input. Ammonium nitrate increased plant shoot dry weight; fresh yield; and shoot N, K, and Ca uptake in the first harvest. Ammonium nitrate relative to organic compost and to ammonium sulfate increased fresh yield by approximately 57 and 25%, respectively. However, ammonium sulfate in the first harvest greatly increased shoot total phenols, from 137 mgGAE/100 g FW in ammonium nitrate to 280.4 mgGAE/100 g FW. Coriander’s fresh yield, in the second harvest, was unaffected by nitrogen addition. However, ammonium nitrate increased shoot total phenols and FRAP activity. Overall, the shoot phytochemical accumulation in the second harvest was lower than in the first. The combined application of ammonium nitrate and organic compost is a strategy to reduce inorganic nitrogen application.

Quizalofop and Sethoxydim Activity as Affected by Adjuvants and Ammonium Fertilizers

Weed Science ◽  
1992 ◽  
Vol 40 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Thomas H. Beckett ◽  
Edward W. Stoller ◽  
Loren E. Bode
Keyword(s):  
Surface Tension ◽  
Nonionic Surfactant ◽  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Buffering Capacity ◽  
Ammonium Polyphosphate ◽  
Laboratory Studies ◽  
Giant Foxtail ◽  
Urea Ammonium Nitrate ◽  
Petroleum Oil

Ammonium fertilizers, petroleum oil concentrate, and nonionic surfactant were evaluated as postemergence spray additives to improve giant foxtail and volunteer corn control by 28 g ai ha−1of the ethyl ester of quizalofop or 56 g ha−1sethoxydim. Additions of 0.25% by vol nonionic surfactant or 2.5% petroleum oil concentrate improved grass control, but additions of 10% urea ammonium nitrate (28-0-0), 10% ammonium polyphosphate (10-34-0), or 0.1M ammonium sulfate (21-0-0-24S) did not consistently affect grass control. In laboratory studies with corn, greatest14C absorption from leaf-applied14C-quizalofop (8 h after treatment) was found with additions of petroleum oil concentrate (80% absorbed) or nonionic surfactant (18% absorbed), while less absorption was observed with treatments containing either no additive, urea ammonium nitrate, ammonium polyphosphate, or ammonium sulfate (8 to 13% absorbed). Surface tension and droplet size of spray solutions were affected primarily by additions of nonionic surfactant, petroleum oil concentrate, and the formulated herbicides. Solution density, solute potential, pH, and buffering capacity were primarily affected by fertilizer additions.

Effect of nitrogen source and soil type on inorganic nitrogen concentrations and availability in field trials with wheat

1992 ◽  
Vol 32 (2) ◽  
pp. 175 ◽  
Author(s):  
MG Mason
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Inorganic Nitrogen ◽  
Soil Surface ◽  
Field Trials ◽  
Ammonium N ◽  
Nitrogen Concentrations ◽  
Urea Ammonium Nitrate ◽  
Rate Of Decline ◽  
N Rates

Thirteen trials, each with 3 nitrogen (N) sources (urea, ammonium nitrate, and ammonium sulfate) and 2 N rates (25 and 75 kg N/ha), were carried out during 1987-89, to measure the rate of disappearance of ammonium-N on different soils. Six soil categories were examined, from very acid to calcareous light soils, and from medium to heavy textured soils. Plots were planted with wheat, and at the higher rate of N, fallow plots were included to distinguish plant uptake from other processes such as nitrification and immobilisation that cause the disappearance of ammonium N. Reduction in concentration of ammonium-N was rapid on high pH, light soils (2-3 weeks at Dongara 1988), and slower with decreasing soil pH (e.g. >19 weeks at Merredin 1987). Nitrate-N concentration increased on fertiliser-treated plots at all sites, indicating that nitrification was taking place. Ammonium-N decline was slower with ammonium sulfate supplied than with urea or ammonium nitrate, consistent with its greater acidifying effect in the soil. This difference did not occur on the alkaline light soils, where reduction in concentration of ammonium-N was rapid for all sources. In 1989, the rate of decline of ammonium-N was considerably slowed because the soil surface containing the ammonium-N was dried during a very dry spring with little effective rainfall in September and October.

scholarly journals Life Cycle Assessment and Soil Nitrogen Balance of Different N Fertilizers for Top Dressing Rye as Energy Crop for Electricity Generation

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 844
Author(s):  
Carlos Martín Sastre ◽  
Ruth Barro ◽  
Yolanda González-Arechavala ◽  
Ana Santos-Montes ◽  
Pilar Ciria
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulphate ◽  
Soil Nitrogen ◽  
Value Chain ◽  
Electricity Generation ◽  
Energy Crops ◽  
Nitrogen Fertilizers ◽  
Calcium Ammonium Nitrate ◽  
Sustainability Criteria ◽  
Ghg Savings

Nitrogen fertilizers have been identified in energy crops LCAs as the main contributors to global warming, as well as to many other environmental impacts. The distinct production process and application emissions of nitrogen fertilizer types for top dressing produce different GHG savings when energy crops value chains are compared to fossil energy alternatives. In this study, three types of fertilizers (calcium ammonium nitrate, urea and ammonium sulphate) at N top dressing rates of 80 kg N/ha are used to grow rye for electricity generation under the conditions of the Continental Mediterranean climate of central-northern Spain. Complete LCAs for the whole value chain based on real data were performed in conjunction with soil nitrogen balances (SNBs) to assess the accomplishment of European Union (EU) GHG savings sustainability criteria, as well as the sustainability of fertilization practices for soil nitrogen stocks. The results obtained can provide interesting insights for policy making, since calcium ammonium nitrate, the most common fertilizer for rye crops, led to 66% GHG savings, as opposed to the 69% achieved when applying urea and 77% when ammonium sulphate was used. Nevertheless, the three fertilizers produced annual soil deficits greater than 50 kg N/ha. In order to ensure savings above 80%, as required by the EU sustainability criteria, and sustainable SNBs, additional optimization measures should be taken at key points of the value chain.

Internal mixing of ammonium nitrate and ammonium sulfate

2000 ◽  
Vol 31 ◽  
pp. 899-900
Author(s):  
Harry M. Ten Brink ◽  
Pauline Dougle ◽  
Arja Even
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Internal Mixing

Utilization of the By-Products for Simultaneous Purification of Sulfur Dioxide and Nitrogen Oxide in Bio-Trickling Process

2013 ◽  
Vol 779-780 ◽  
pp. 1220-1223
Author(s):  
Wen Bo Zhou ◽  
Ping Zou ◽  
Pei Shi Sun ◽  
Xiao Yi Bi ◽  
Yong Yang Mao ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Purification Process ◽  
Copper Ore ◽  
By Products

The potential of using the waste from simultaneous NOx and SO2 purification bio-trickling process to leach copper ore and to make fertilizer was investigated. It was found there were two main exhausted by-products in the purification process: the acidic liquid in desulfurization tower and the alkalescent liquid in denitrogenation tower. Through operation of leaching the oxide ore sample containing 2.58% copper by the acidic liquid, the effective grade of the metal to be extracted reached 28.37% by weight. With adding proportional dose of ammonia into the alkalescent liquid or the acidic liquid and going through evaporation and concentration, crystal products of ammonium sulfate and ammonium nitrate were generated, which can be used in fertilizer manufacturing.

Inhibition of Tulane Virus replication via exposure to lowbush blueberry (Vaccinium angustifolium) fractional components

2017 ◽  
Vol 7 (4) ◽  
pp. 281-289 ◽  
Author(s):  
David F. Bridges ◽  
Anna Breard ◽  
Alison Lacombe ◽  
Don C. Valentine ◽  
Shravani Tadepalli ◽  
...  
Keyword(s):  
Virus Replication ◽  
Vaccinium Angustifolium ◽  
Lowbush Blueberry ◽  
Tulane Virus
Sign in / Sign up

Export Citation Format

Share Document