EFFECTS OF MANURES, AMMONIUM NITRATE AND S-COATED UREA ON YIELD AND UPTAKE OF N BY CORN AND ON SUBSEQUENT INORGANIC N LEVELS IN SOILS IN SOUTHERN QUEBEC

1978 ◽  
Vol 58 (2) ◽  
pp. 153-158 ◽  
Author(s):  
P. L. MILLER ◽  
A. F. MacKENZIE
Keyword(s):  
Ammonium Nitrate ◽  
Zea Mays L ◽  
N Uptake ◽  
Residual Effects ◽  
Cow Manure ◽  
Pollution Potential ◽  
Inorganic N ◽  
Mineral N ◽  
Hog Manure ◽  
Coated Urea

Effects of added N in the form of ammonium nitrate, S-coated urea, solid cow manure, liquid hog manure, and liquid hog manure plus straw on yield and N uptake of corn (Zea mays L.) were determined in 1971. Residual effects of the fertilizers were measured in 1972. Levels of added N were 150 kg/ha, on three soils varying in texture. In 1971, highest yield and N uptake was found using ammonium nitrate, followed by S-coated urea. The manures were not different than the control, and the average values with liquid manure plus straw were generally lowest. Ammonium nitrate treatments had the lowest mineral N levels in the soil profile in September. Thus, ammonium nitrate was considered to have the lowest pollution potential, assuming that fall-accumulated inorganic soil N was a hazard for pollution of groundwater.

Evaluation of sulphur-coated urea fertilizers in savannah soils: 2. Effects on soil pH and residual nitrogen

1983 ◽  
Vol 101 (1) ◽  
pp. 125-129
Author(s):  
L. A. Nnadi ◽  
S. M. Abed
Keyword(s):  
Ammonium Nitrate ◽  
Soil Ph ◽  
Soil Profile ◽  
Residual Effects ◽  
Mineral N ◽  
Calcium Ammonium Nitrate ◽  
Ecological Zones ◽  
Nitrogen Levels ◽  
Residual Nitrogen ◽  
Coated Urea

SUMMARYThe residual effects of sulphur-coated urea (SCU) fertilizers were evaluated by measuring the pH and mineral-N in the soil profile after 2 years of application of these fertilizers to soils in the various ecological zones of the savannah of Nigeria. Changes of 0·2–0·3 pH units relative to the control (without applied N) were detected on the sandier soils at Kadawa and Mokwa but not on the heavier Samaru soils. There was little or no difference among the sulphur-coated urea and calcium ammonium nitrate in their acidification effects. Also residual nitrogen levels were low in plots that received SCU but did not differ significantly from those of calcium ammonium nitrate.

scholarly journals Effects of Combined Application of Cow Manure And Inorganic Nitrogen Fertilizer on Growth, Yield and Nitrogen Uptake of Black Rice

Akta Agrosia ◽  
2018 ◽  
Vol 21 (2) ◽  
pp. 55-60
Author(s):  
Marwanto Marwanto ◽  
Nasiroh Nasiroh ◽  
Bambang G. Mucitro ◽  
Merakati Handajaningsih
Keyword(s):  
Growth Parameters ◽  
N Uptake ◽  
Fertilizer Application ◽  
N Fertilizer ◽  
Root Weight ◽  
Cow Manure ◽  
Black Rice ◽  
Inorganic N ◽  
Yield Attributes ◽  
Shoot Weight

The beneficial effects of manure on soil properties, growth, and crop productivity have promoted its use for replacing the application of N fertilizer. However, it is not well understood to what extent N fertilizer was able to be substituted by cow manure. Accordingly, this pot experiment aimed to compare the effect of inorganic N fertilizer application alone with that of the combined use of inorganic N fertilizer with cow manure based on the same amount of total N on growth parameters, yield attributes, and nitrogen (N) uptake of black rice. The experiment was conducted under a screen house condition in Agriculture Faculty, Bengkulu University located at 15 meters altitude above sea level during the summer season of 2015. There were six treatments viz. T1 = 100% N from urea + 0% N from cow manure (0.52 g N + 0.00 g cow manure) pot-1, T2 = 80% N from urea  + 20% N from cow manure  (0.42 g N + 9.55 g cow manure) pot-1, T3 = 60% N from urea + 40% N from cow manure (0.31 g N  + 19.10 g cow manure) pot-1, T4 = 40% N from urea + 60% N from cow manure (0.21 g N + 28.65 g cow manure) pot-1, T5 = 20% N from urea + 80% N from cow manure (0.10 g N+ 38.20 g cow manure) pot-1, and T6 = 0% N from urea + 100% N from cow manure (0.00 g N  + 47.75 g cow manure) pot-1. The amount of inorganic N fertilizer in the form of urea and cow manure applied was calculated based on the recommended rate of 115.00 kg ha-1 for N fertilizer and 10.50 ton ha-1 for cow manure. These treatments were arranged in a Completely Randomized Design and repeated three times. The results showed that the treatments significantly (P ?0.005) affected growth parameters as measured by plant height, the number of leaves, fresh shoot weight, fresh root weight, dry shoot weight, dry root weight, yield attributes as determined by the total number of tillers, the total number productive tillers, grain yield per pot, and N uptake. The highest values for all these variables were obtained in the treatment receiving recommended rate of urea only (100% N from urea + 0% N from cow manure as equivalence) and the lowest in the treatment receiving a100% N from cow manure (0% N from urea + 100% N from cow manure). However, combined treatments of cow manure and inorganic N fertilizer such as 80% N from urea  + 20% N from cow manure, 60% N from urea + 40% N from cow manure 40% N from urea + 60% N from cow manure showed a parity statistically with the treatment receiving 100% N from urea only in maintaining the values for all these variables. Overall, the combined use of inorganic N fertilizer (urea) and cow manure as an equivalence promoted growth and yield of black rice by improving N uptake. Keywords: integrated nutrient management, soil chemical property, Nitrogen uptake, combined fertilizer application, black rice

scholarly journals Pronitridine Nitrification Inhibitor With Urea Ammonium Nitrate for Corn

2018 ◽  
Vol 10 (6) ◽  
pp. 16 ◽  
Author(s):  
Kelly A. Nelson
Keyword(s):  
Ammonium Nitrate ◽  
Zea Mays L ◽  
N Uptake ◽  
Nitrification Inhibitor ◽  
Nitrogen Fertilizers ◽  
Nitrification Inhibitors ◽  
Agronomic Efficiency ◽  
N Removal ◽  
Claypan Soil ◽  
Urea Ammonium Nitrate

Nitrification inhibitors have been used to enhance the efficiency of nitrogen fertilizers. This research evaluated the effectiveness of nontreated urea ammonium nitrate (UAN) at 0, 67, 135, 202, and 270 kg N ha-1 as well as UAN treated with nitrification inhibitors (pronitridine at 9.4 and 18.8 L ha-1 or nitrapyrin at 0.5 kg a.i. ha-1) to enhance N uptake and increase yield of corn (Zea mays L.). The study took place from 2012-2014 in upstate Missouri on a claypan soil. During the experiments, environmental conditions (high, medium, and low yielding years) affected corn response to pronitridine and nitrapyrin. In general, UAN plus pronitridine at 9.4 L ha-1 had similar effects on corn compared pronitridine at a higher (18.7 L ha-1) rate. During a high-yielding year (2014), in order to produce yields equivalent to 67 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin, UAN needed to be increased 14 to 19%. Similarly, the amount of nontreated UAN needed to be increased 8 to 11% for yields to be equivalent to UAN at 135 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin. Grain N removal and agronomic efficiency was highest with pronitridine at 9.4 L ha-1 and nitrapyrin combined with 67 and 135 kg N ha-1, respectively. This research indicates that pronitridine was as effective as nitrapyrin when added to a pre-emergence application of UAN placed between the rows in a dribble band.

Integrated management of straw and urea nitrogen in lowland rice under a rice-wheat rotation

1991 ◽  
Vol 116 (2) ◽  
pp. 217-220 ◽  
Author(s):  
B. S. Mahapatra ◽  
G. L. Sharma ◽  
Nayab Singh
Keyword(s):  
Field Experiment ◽  
Integrated Management ◽  
N Uptake ◽  
Residual Effects ◽  
Organic N ◽  
Rice Grain ◽  
Split Application ◽  
Inorganic N ◽  
Rice Yields ◽  
Straw Application

SUMMARYThe average yields of a 3-year field experiment (1985/86–1987/88) on a mollisol at Pantnagar showed that, at 87 kg N/ha, applying urea supergranules (USG) gave 0·47 t/ha more rice grain than split application of prilled urea (PU). The data also showed that, at this rate of N, one-third (29 kg N/ha) of inorganic N can be substituted by fresh straw (wheat or rice) applied at planting to give similar rice yields. However, at a total of 58 kg N/ha, 29 kg N/ha applied as straw with 29 kg N/ha of PU or USG reduced yield compared with 58 kg N/ha of PU or USG alone, except in 1986/87. Yield differences were attributed to differences in number of panicles/m2, N uptake by the crop and mean wet soil NH4+-N obtained at various stages of crop growth during 1986/87 and 1987/88. Wheat grown after rice in 1985/86 and 1986/87 showed significant residual effects in plots with straw application and these were correlated with the rate of hydrolysable organic N (HN) obtained after rice.

scholarly journals Effect of Coated Urea with Humic-Calcium on Transformation of Nitrogen in Coastal Sandy Soil: A Soil Column Method

2018 ◽  
Vol 15 (1) ◽  
pp. 11
Author(s):  
Sulakhudin Sulakhudin ◽  
Abdul Syukur ◽  
Dja'far Shiddieq ◽  
Triwibowo Yuwono
Keyword(s):  
Sandy Soil ◽  
Soil Column ◽  
Fertilizer Efficiency ◽  
Cow Manure ◽  
Mineral N ◽  
Total N ◽  
Available N ◽  
Leaching Loss ◽  
Column Method ◽  
Coated Urea

Effect of Coated Urea with Humic-Calcium on Transformation of Nitrogen in Coastal Sandy Soil: A Soil Column Method (Sulakhudin, A  Syukur, D  Shiddieq and T  Yuwono):  In coastal sandy soil, mainly nitrogen losses due to leaching resulted to low fertilizer efficiency. Slow-release N fertilizers are proposed to minimize these losses, and humic-calcium coated urea has been examined. A soil column method was used to compare the effects of coated urea with humic-calcium on transformation and leaching loss of N in coastal sandy soil. The experiment aid to compare two kind source humic substances (cow manure and peat) which mixed with calcium as coated urea on transformation, vertical distribution and leaching N in coastal sandy soil. The concentration of humic-calcium coated urea i.e.1%, 5% and 10% based on their weight.  The results showed that urea coated with humic-calcium from cow manure (UCHM) and humic-calcium from peat (UCHP) increased the N total and available N in the soil and decreased leaching loss of N from the soil column. Compare to UCHP, UCHM in all concentration showed N-nitrate higher than N-ammonium on incubation length 2, 4 and 6 weeks. The N leached from a costal sandy soil with application coated urea with UCHM ranged from 21.18% to 23.72% of the total N added as fertilizer, for coated urea with UCHP they ranged between 21.44% and 23.25%, whereas for urea (control) reach 29.48%. Leaching losses of mineral N were lower when urea coated with UCHM compared to urea coated with UCHP or urea fertilizer.  The study concluded that the UCHM is better than UCHP in decreasing N leached from coastal sandy soil.

scholarly journals Nitrogen Source Influences the Effect of Plant Growth-Promoting Rhizobacteria (PGPR) on Macadamia integrifolia

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1064
Author(s):  
Marta Gallart ◽  
Chanyarat Paungfoo-Lonhienne ◽  
Axayacatl Gonzalez ◽  
Stephen J. Trueman
Keyword(s):  
Plant Growth ◽  
N Uptake ◽  
Plant Growth Promoting Rhizobacteria ◽  
Strong Increase ◽  
Inorganic N ◽  
Mineral N ◽  
N Level ◽  
Macadamia Integrifolia ◽  
Plant Growth Promoting ◽  
Growth Promoting

The potential of plant growth-promoting rhizobacteria (PGPR) to improve plant growth and nutrient acquisition has received increased attention. This study investigated the synergistic effects of combining PGPR Paraburkholderia sp. SOS3 with the addition of inorganic N fertilizer (iN) or a combined application of inorganic N with organic manure-based fertilizer (iNoN) at low and high levels of N fertilization on Macadamia integrifolia seedling growth. We studied plant growth, mineral N in soil-leachate, and media physicochemical and microbial characteristics. Growth of seedlings fertilized with iNoN at high N level (iNoN 100) was enhanced by PGPR inoculation, with an increase of 32% in total biomass and 43% in N uptake, compared with uninoculated seedlings. No significant PGPR effect was observed on growth under low or high inorganic N treatments but PGPR significantly reduced N leaching after 3 weeks of fertilization. We found a positive relationship between media and plant δ15N and plant N uptake, and a strong increase in microbial-biomass N under the most productive fertilization treatment (iNoN 100 with PGPR), compared with the other N treatments (without or with PGPR). The results suggest that PGPR improves N acquisition by reducing mineral N loss and increasing plant N availability, but that these effects depend on the N form and N level.

Sustaining productivity of a Vertisol at Warra, Queensland, with fertilisers, no-tillage or legumes. 3. Effects of nitrate accumulated in fertilised soil on crop response and profitability

1996 ◽  
Vol 36 (6) ◽  
pp. 675 ◽  
Author(s):  
WM Strong ◽  
RC Dalal ◽  
MJ Cahill ◽  
EJ Weston ◽  
JE Cooper ◽  
...  
Keyword(s):  
Water Deficit ◽  
N Uptake ◽  
Residual Effects ◽  
Soil Mineral N ◽  
Financial Returns ◽  
Soil Mineral ◽  
Mineral N ◽  
N Application ◽  
Total N ◽  
Fertiliser Application

Unreliable rainfall during the crop growing season leads to a variable use of applied fertiliser nitrogen (N) by the crop, which may leave substantial fertiliser N residue in the soil. Residual effects of fertiliser N (0-150 kg/ha) applied to a succession of wheat crops over the period 1987-94 were studied in terms of increased crop returns ($A/ha) from fertiliser application and increased soil mineral N for the subsequent crop. In spite of the unreliability of wheat responses to applied N in this region, increases in financial returns over this sequence of crops suggest that a strategy of routine N application to wheat was highly profitable on this fertility-depleted soil. When increases in returns from 1 fertiliser application were summed over successive crops, financial returns generally increased with increasing rate of N applied up to the highest N rate (100 or 150 kg/ha). When N was applied to each successive crop, financial returns were similarly increased but applications >50 kg/ha were less profitable than rates <50 kg/ha. Increased financial returns for the 7 crops grown with conventional tillage increased by $A306/ha, $794/ha, $867/ha and $867/ha for fertiliser N applied at rates of 12.5, 25, 50 and 75 kg N/ha to each crop, respectively. Total N fertiliser costs for the 7 crops were $A63ha, $126ha, $253/ha and $380/ha. Increased financial returns of $608/ha and $962/ha were derived from applications of 25 and 75 kg N/ha to each of the 7 crops with zero tillage. When N uptake by wheat was reduced by water deficit, or where a longer fallow period created much higher nitrate levels, a single fertiliser N application of 75 or 150 kg/ha resulted in nitrate accumulated to 1.2 m depth in the following May. Where N was applied to each crop in the sequence, application of 75 kg/ha increased soil nitrate to 1.2 m in the following May, except in 1989 and 1990. The 3-crop sequence, 1988-90, placed high demands on soil N supplies, with high wheat yields (about 4.5 t/ha) and grain N contents (100-115 kg/ha) in 1988 but lower yields (>2t/ha) in 1989 and 1990. Consequently, low levels (46-63 kg/ha) of soil mineral N were apparently carried over for crops in 1989 and 1990 even where 75 kg N/ha was applied to the preceding crop. Subsequent recovery of financial losses, incurred in years of water deficit, made the routine application of 75 kg N/ha to fertility-depleted soils of this region profitable.

Within-season grass yield and nitrogen uptake, and soil nitrogen as affected by nitrogen applied at various rates and distributions in a high rainfall environment

2000 ◽  
Vol 80 (2) ◽  
pp. 287-301 ◽  
Author(s):  
C. G. Kowalenko ◽  
S. Bittman
Keyword(s):  
N Uptake ◽  
Growing Season ◽  
N Fertilizer ◽  
Residual Effects ◽  
Ammonium Concentration ◽  
N Leaching ◽  
Soil Nitrate ◽  
Inorganic N ◽  
Environmental Implications ◽  
N Application

A study was conducted to assess the effect of rates of nitrogen (N) fertilizer, and to compare the effectiveness of single and split applications of N on yield and quality of forage grass and on the potential for nitrate leaching. Three field trials were conducted at different sites in successive years, with plant and soil measurements made at each of four harvests. Extractable inorganic N was measured to 0.6 m in three depth increments prior to spring N application and after each cut in order to evaluate immediate and residual effects of the N fertilizer on plant growth, and the environmental implications of the applications. Response of yield and N uptake to N applications differed in the three trials. In all trials, the effect of N rate was greater than the effect of N distribution during the growing season. Although there were only small, whole-season yield increases associated with distributing the N over the season, the distribution of yield within the season was changed considerably. Soil data showed relatively little leaching of N during the growing season under contrasting weather conditions of the three growing seasons. Retention of N within the soil root zone contributed to residual effects on yield and plant uptake, and these effects frequently lasted to the end of the growing season. Crop response to N applications was apparently influenced by the N supplying capacity of the soil and the effect of weather on crop growth rate. Soil nitrate at harvest did not vary consistently with N application treatments in the three trials, other than having highest concentrations at the highest fertilizer rate. Soil nitrate was greatest after cut 1 and decreased sharply toward the end of the season following the single spring applications, whereas plots receiving equal distributions of N through the season had relatively high concentrations at all sampling times during the season. Soil extractable ammonium concentration was influenced by high rates of N application, but the effect was small and largely confined to the sampling after cut 1. The soil always contained about 10–15 mg kg−1 extractable ammonium in surface 0.3 m depth, with a tendency for slightly greater concentrations in early spring. Soil ammonium appears to be involved in soil and plant processes, but the exact magnitude and significance of its involvement could not be determined from the measurements made. The redistribution of grass yield by splitting the application of fertilizer N within the growing season would be beneficial for grazing systems. Unfortunately, soil inorganic N measurements will not greatly assist in determining the precise rate and distribution of fertilizer for varying field conditions. Key words: N response, N uptake, residual N effect, soil extractable N, N leaching

scholarly journals An evaluation of biochar pre-conditioned with urea ammonium nitrate on maize (Zea mays L.) production and soil biochemical characteristics

2014 ◽  
Vol 94 (4) ◽  
pp. 551-562 ◽  
Author(s):  
Matthew Dil ◽  
Maren Oelbermann ◽  
Wei Xue
Keyword(s):  
Zea Mays ◽  
Ammonium Nitrate ◽  
Crop Production ◽  
Zea Mays L ◽  
N Uptake ◽  
Utilization Efficiency ◽  
Microbial Biomass C ◽  
Biochemical Characteristics ◽  
Soil Microbial ◽  
Urea Ammonium Nitrate

Dil, M., Oelbermann, M. and Xue, W. 2014. An evaluation of biochar pre-conditioned with urea ammonium nitrate on maize (Zea mays L.) production and soil biochemical characteristics. Can. J. Soil Sci. 94: 551–562. Biochar can enhance soil fertility, plant nutrient uptake and crop production. Using a potted study, we quantified the effects of adding biochar at 1 t ha−1 (Char), biochar pre-conditioned with urea ammonium nitrate [UAN (Char+)], or UAN only to a control (Contr) with no amendments on maize (Zea mays L.) biomass production, tissue carbon (C) and nitrogen (N) concentrations, N uptake (NU), N utilization efficiency (NUtE), and soil chemistry and biology in coarse-, medium- and fine-textured soils over 6 wk. Soil pH decreased (P<0.05) in Char+ and UAN treatments for all soil textures. Soil organic carbon (SOC) increased (P<0.05) in the coarse and medium textured soil in Char and Char+ treatments. Soil ammonium and soil nitrate were different (P<0.05) among treatments; increasing or decreasing depending upon soil texture. Soil microbial biomass C was lowest (P<0.05) in the UAN treatment for all soil textures. Soil potential microbial activity was significantly greater in the coarse-textured soil in only the Char and Char+ treatments. Maize biomass, tissue N concentration, and NU increased (P<0.05) in soils amended with Char+ or UAN only. NUtE was lower (P<0.05) in Char+ and UAN treatments in the coarse- and medium-textured soils, but this was reversed for the fine-textured soil.

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