Impact of tillage and landscape position on nitrogen availability and yield of spring wheat in the Brown soil zone in southwestern Saskatchewan

1998 ◽  
Vol 78 (3) ◽  
pp. 563-572 ◽  
Author(s):  
V. Jowkin ◽  
J. J. Schoenau
Keyword(s):  
Spring Wheat ◽  
Nitrogen Availability ◽  
N Uptake ◽  
Wheat Crop ◽  
N Availability ◽  
Inorganic N ◽  
Brown Soil ◽  
Soil Zone ◽  
No Till ◽  
Crop N Uptake

Nitrogen availability to a spring wheat crop was examined in the cropping season in a side-by-side comparison of no-till (first year) and tillage fallow in an undulating farm field in the Brown soil zone in southwestern Saskatchewan. Thirty different sampling points along a grid in each tillage landscape were randomly selected, representing 10 each of shoulder, footslope and level landscape positions. Nitrogen availability was studied i) by profile inorganic N content ii) by crop N uptake and yield of spring wheat (Triticum aestivum L.) and iii) by 15N tracer technique and in situ burial of anion exchange resin membranes (AEM).Pre-seeding available moisture content of the surface soil samples was significantly higher under no-till compared with tillage fallow. However, no significant differences in pre-seeding profile total inorganic N, crop N uptake and yield were observed between the treatments. At the landform scale, shoulder positions of the respective tillage systems had lower profile inorganic N, crop N uptake and yield compared with other slope positions. Soil N supply power, as determined by 15N tracer and AEM techniques, was not significantly different between the tillage treatments, indicating that N availability is not likely to be greatly affected in initial years by switching to no-till fallow in these soils under normal moisture conditions. Key words: Summerfallow, landscape, nitrogen, wheat

Disposition of nitrogen in the soil-plant system for flax and spring wheat-containing rotations in the Brown soil zone

1996 ◽  
Vol 76 (3) ◽  
pp. 407-412 ◽  
Author(s):  
C. A. Campbell ◽  
R. P. Zentner
Keyword(s):  
Soil Water ◽  
Spring Wheat ◽  
Plant Biomass ◽  
N Uptake ◽  
Triticum Aestivum L ◽  
Wheat Crop ◽  
Hard Red Spring Wheat ◽  
Brown Soil ◽  
Linum Usitatissimum L ◽  
Soil Zone

Recently, there has been a marked increase in the production of oilseed crops instead of hard red spring wheat (Triticum aestivum L.) in the semiarid Brown soil zone of Saskatchewan. In this study we compare the disposition of N and soil water in two 3-yr fallow-containing crop rotations, one with flax (Linum usitatissimum L.) and wheat, and the other with only wheat. These rotations were initiated at Swift Current, Saskatchewan, in 1967 on a silt loam soil, but this assessment applied to the 1985 to 1995 period when complete soil water, NO3-N, and plant N measurements were collected. Flax grown on fallow produced less plant biomass and N uptake was lower than for wheat grown on fallow; thus, it left more NO3-N and water in the soil (especially in the 60–120 cm depth) at harvest. This residual NO3-N and water following flax rarely resulted in higher grain yields or higher grain N concentrations in the succeeding stubble-wheat crop. We hypothesized that this excess NO3-N and water may leach and thereby increase contamination of groundwater. Key words: NO3-N, soil water, N uptake, grain yield, straw yield, grain protein

Short-term nitrogen dynamics in soil amended with fresh and composted cattle manures

1994 ◽  
Vol 74 (2) ◽  
pp. 147-155 ◽  
Author(s):  
J. W. Paul ◽  
E. G. Beauchamp
Keyword(s):  
Beef Cattle ◽  
Nitrogen Availability ◽  
N Uptake ◽  
Cattle Manure ◽  
N Availability ◽  
Inorganic N ◽  
Available Nitrogen ◽  
Higher Temperature ◽  
Manure Amendments ◽  
Amended Soil

The amount of available nitrogen in fresh and composted manures is required to adjust inorganic fertilizer applications for crops when using manures and composts. Corn (Zea mays L.) plants were grown for 8 wk at temperatures of 17–27 °C and 12–18 °C in soil amended with two rates of fresh and composted solid beef cattle manure. Apparent N uptake of corn grown in soil amended with fresh solid beef cattle manure, composted beef cattle manure and (NH4)2SO4 at the higher temperature was 2, 8, and 36%, respectively, during this 8-wk period. Nitrogen uptake by corn in fresh solid beef cattle manure-amended soil at low temperature was affected by factors other than N availability. A 12-wk laboratory experiment was performed in which 15NH4+ was added to fresh and composted manure-amended soil to determine the fate of the inorganic N in the manure and to measure N mineralization rates. Net immobilization of inorganic N occurred with all manures; however, after 3 wk, net mineralization occurred with the solid and composted beef cattle manure. Immobilization of 15N continued with all manure amendments as a result of mineralization-immobilization turnover. The amount of unrecovered 15N after 12 wk was 10.5, 2 and 1% of the added 15N in soil amended with solid beef cattle manure, composted beef cattle manure and manure composted with bark, respectively. Key words: Composted manure, nitrogen availability, 15N, immobilization, remineralization, temperature

Factors influencing grain N concentration of hard red spring wheat in the semiarid prairie

1997 ◽  
Vol 77 (1) ◽  
pp. 53-62 ◽  
Author(s):  
C. A. Campbell ◽  
F. Selles ◽  
R. P. Zentner ◽  
B. G. McConkey ◽  
R. C. McKenzie ◽  
...  
Keyword(s):  
Water Use ◽  
Spring Wheat ◽  
Soil Test ◽  
Fertilizer N ◽  
Degree Days ◽  
Hard Red Spring Wheat ◽  
Brown Soil ◽  
Soil Zone ◽  
Factors Influencing ◽  
N Concentration

Prairie producers are now being rewarded with significant premiums for producing wheat (Triticum aestivum L.) of high protein concentration. We analyzed data from two 12-yr experiments conducted on a medium-textured Orthic Brown Chernozem at Swift Current, Saskatchewan, to determine and quantify factors influencing grain N concentration of hard red spring wheat grown on stubble land. Results of one of the 12-yr studies, a snow management × fertilizer N, zero-tillage experiment, showed that under hot, dry conditions, grain N concentration was very high and increased with moderate rates of fertilizer N (FN), then levelled off at higher rates of N. Under cool, wet conditions, grain N first decreased (due to N dilution by yield) then increased with further addition of FN. Under warm intermediate moisture conditions, grain N concentration increased at moderate rates in response to FN. Data for the two 12-yr experiments were pooled and multiple regression, with backward elimination, and stepwise selection used to develop the relationship:Grain N (g kg−1) = −7.63 + 0.05 WU − 0.000094 WU2 + 0.30 SN − 0.0022 SN2 − (0.0010 SN × WU) + (0.0017 FN × SN) + 0.0189 DD (R2 = 0.64, P = 0.001, n = 262)where WU = water use (mm), SN = soil test N (kg ha−1), FN = (kg ha−1), and DD = degree-days >5 °C (°C-days) from 1 May to 31 August. WU was available spring soil water in 0- to 1.2-m depth plus 1 May to 31 July precipitation, and SN was NO3-N in the 0- to 0.6-m depth, measured in the fall. We attempted to validate this model using data from a long-term crop rotation and a fertilizer trial experiment in the Brown soil zone, a tillage × rotation experiment in the Dark Brown soil zone in Saskatchewan, and an irrigation × N fertilizer experiment in the Brown soil zone of southern Alberta. Validation met with only modest success (R2 up to 0.70, P = 0.001). Generally, estimated grain N concentrations were lower than the measured values. Water use (negatively related) and temperature (DD) (positively related) were the most important factors influencing grain N, while FN and SN (positively related) were much less important. Because of the complexity of response in grain N to the aforementioned factors, and since farmers cannot predict weather conditions, fertilizer management to achieve high protein remains a challenge under dryland conditions. Key words: Soil test N, fertilizer N, available water, degree-days

scholarly journals Evaluation of the Agronomic Performance of Organic Processing Tomato as Affected by Different Cover Crop Residues Management

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 504 ◽  
Author(s):  
Abou Chehade ◽  
Antichi ◽  
Martelloni ◽  
Frasconi ◽  
Sbrana ◽  
...  
Keyword(s):  
Plant Growth ◽  
Cover Crop ◽  
Nitrogen Availability ◽  
Crop Residues ◽  
N Uptake ◽  
Total Yield ◽  
Soluble Solids ◽  
Plastic Mulch ◽  
Processing Tomato ◽  
No Till

No-till practices reduce soil erosion, conserve soil organic carbon, and enhance soil fertility. Yet, many factors could limit their adoption in organic farming. The present study investigated the effects of tillage and cover cropping on weed biomass, plant growth, yield, and fruit quality of an organic processing tomato (Solanum lycopersicon L. var. Elba F1) over two seasons (2015–2017). We compared systems where processing tomato was transplanted on i) tilled soil following or not a winter cover crop (Trifolium squarrosum L.) and with/without a biodegradable plastic mulch; and ii) no-till where clover was used, after rolling and flaming, as dead mulch. Tomato in no-till suffered from high weed competition and low soil nitrogen availability leading to lower plant growth, N uptake, and yield components with respect to tilled systems. The total yield in no-till declined to 6.8 and 18.3 t ha−1 in 2016 and 2017, respectively, with at least a 65% decrease compared to tilled clover-based systems. No evidence of growth-limiting soil compaction was noticed but a slightly higher soil resistance was in the no-till topsoil. Tillage and cover crop residues did not significantly change tomato quality (pH, total soluble solids, firmness). The incorporation of clover as green manure was generally more advantageous over no-till. This was partly due to the low performance of the cover crop where improvement may limit the obstacles (i.e., N supply and weed infestation) and enable the implementation of no-till in organic vegetable systems.

scholarly journals Nitrate and Ammonium Affect the Overall Maize Response to Nitrogen Availability by Triggering Specific and Common Transcriptional Signatures in Roots

2020 ◽  
Vol 21 (2) ◽  
pp. 686 ◽  
Author(s):  
Laura Ravazzolo ◽  
Sara Trevisan ◽  
Cristian Forestan ◽  
Serena Varotto ◽  
Stefania Sut ◽  
...  
Keyword(s):  
Nitrogen Availability ◽  
Negative Regulator ◽  
N Availability ◽  
Nitrogen Forms ◽  
Inorganic N ◽  
Comprehensive Information ◽  
Response To Stress ◽  
Distinct Features ◽  
Maize Response ◽  
Amino Acid Concentrations

Nitrogen (N) is an essential macronutrient for crops. Plants have developed several responses to N fluctuations, thus optimizing the root architecture in response to N availability. Nitrate and ammonium are the main inorganic N forms taken up by plants, and act as both nutrients and signals, affecting gene expression and plant development. In this study, RNA-sequencing was applied to gain comprehensive information on the pathways underlying the response of maize root, pre-treated in an N-deprived solution, to the provision of nitrate or ammonium. The analysis of the transcriptome shows that nitrate and ammonium regulate overlapping and distinct pathways, thus leading to different responses. Ammonium activates the response to stress, while nitrate acts as a negative regulator of transmembrane transport. Both the N-source repress genes related to the cytoskeleton and reactive oxygen species detoxification. Moreover, the presence of ammonium induces the accumulation of anthocyanins, while also reducing biomass and chlorophyll and flavonoids accumulation. Furthermore, the later physiological effects of these nutrients were evaluated through the assessment of shoot and root growth, leaf pigment content and the amino acid concentrations in root and shoot, confirming the existence of common and distinct features in response to the two nitrogen forms.

Yield and water use of paired-row versus equidistant-row seeded spring wheat in a semiarid environment

1992 ◽  
Vol 72 (2) ◽  
pp. 459-463 ◽  
Author(s):  
H. W. Cutforth ◽  
F. Selles
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Water Use ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Row Spacing ◽  
Semiarid Environment ◽  
Brown Soil ◽  
Soil Zone ◽  
Days To Maturity

A field study was carried out to determine the effects of seed row configuration on days to maturity, water use and grain yield of spring wheat (Triticum aestivum L. ’Leader’) grown in a semiarid environment. From 1986 to 1989, Leader spring wheat was seeded at Swift Current, Saskatchewan in north-south equidistant-rows (25-cm row spacing) and paired-rows (two rows 10 cm apart with 50 cm between the centre of each paired row). Seed and fertilizer were applied at recommended rates for the Brown soil zone. There were no significant differences (P > 0.10) in grain yield, water use or days to maturity between equidistant-row and paired-row seeding. The data suggest that under the environmental conditions of the Brown soil zone paired-row seeding may have no agronomic advantage over equidistant-row seeding.Key words: Paired-row seeding, water use, grain yield, spring wheat

RELATIONS OF THIAMINE CONTENT IN SASKATCHEWAN WHEAT TO PROTEIN CONTENT, VARIETY, AND SOIL ZONE

1949 ◽  
Vol 27f (11) ◽  
pp. 450-456 ◽  
Author(s):  
E. Y. Spencer ◽  
M. W. Galgan
Keyword(s):  
Protein Content ◽  
Analysis Of Variance ◽  
Significant Positive Correlation ◽  
Wheat Crop ◽  
Positive Correlation ◽  
Brown Soil ◽  
Soil Zone ◽  
Significant Difference ◽  
Thiamine Content ◽  
Short Method

The thiamine content (by a short method) and the protein content of 754 samples of the 1946 wheat crop and 458 samples of the 1947 wheat crop were determined. In 1946 four varieties were tested m each of the four soil zones, while in 1947 three varieties were tested on the Brown and Dark Brown soils and four on the Black and Black-Gray Transition soils. A highly significant positive correlation between thiamine and protein content was found for the two crops. No significant differences between thiamine values of the Thatcher 1946 and 1947 crop were found. Similarly, an analysis of variance for thiamine content of Redman in the Black and Black-Gray Transition soil zones and Rescue in the Brown and Dark Brown soil zones, for the two crop years showed no significant difference. Of the four varieties, Thatcher, Rescue, Pelissier, and Stewart grown in the Brown and Dark Brown soil zones, Stewart was significantly higher in thiamine content. The greatest range in thiamine content was 2.73 μgm. per gm. for Thatcher in the Black-Gray Transition soil zone (mean 4.01 μgm. per gm.) to 9.57 μgm. per gm. for Stewart in the Brown soil zone (mean 6.18 μgm. per gm.). A highly significant difference was found for varieties grown in different zones for both years. The values decreased as the soil changed from brown to dark brown, to black and degraded black, and finally to gray.

scholarly journals Evaluation of nitrogen availability indices and their relationship with plant response on acidic soils of India

2013 ◽  
Vol 59 (No. 6) ◽  
pp. 235-240 ◽  
Author(s):  
Bordoloi LJ ◽  
Singh AK ◽  
Manoj-Kumar ◽  
Patiram ◽  
S. Hazarika
Keyword(s):  
Nitrogen Availability ◽  
N Uptake ◽  
Reliable Estimate ◽  
Plant Responses ◽  
N Availability ◽  
Soil N ◽  
Acidic Soils ◽  
Total N ◽  
Large Variability ◽  
Available N

Plant&rsquo;s nitrogen (N) requirement that is not fulfilled by available N in soil has to be supplied externally through chemical fertilizers. A reliable estimate of soil N-supplying capacity (NSC) is therefore essential for efficient fertilizer use. In this study involving a pot experiment with twenty acidic soils varying widely in properties, we evaluated six chemical indices of soil N-availability viz. organic carbon (C<sub>org</sub>), total N (N<sub>tot</sub>), acid and alkaline-KMnO<sub>4</sub> extractable-N, hot KCl extractable-N (KCl-N) and phosphate-borate buffer extractable-N (PBB-N), based on their strength of correlation with available-N values obtained through aerobic incubation (AI-N) and anaerobic incubation (ANI-N), and also with the dry matter yield (DMY), N percentage and plant (maize) N uptake (PNU). In general, the soils showed large variability in NSC as indicated by variability in PNU which ranged from 598 to 1026 mg/pot. Correlations of the N-availability indices with AI-N and ANI-N decreased in the order: PBB-N (r = 0.784** and 0.901**) &gt; KCl-N (r = 0.773** and 0.743**) &gt; acid KMnO<sub>4</sub>-N (r = 0.575** and 0.651**) &ge; C<sub>org</sub> (r = 0.591** and 0.531**) &ge; alkaline KMnO<sub>4</sub>-N (r = 0.394** and 0.548**) &gt; N<sub>tot</sub> (r = 0.297** and 0.273*). Of all the indices evaluated, PBB-N showed the best correlations with plant parameters as well (r = 0.790** and 0.793** for DMY and PNU, respectively). Based on the highest correlations of PBB-N with biological indices as well as plant responses, we propose PBB-N as an appropriate index of N-availability in the acidic soils of India and other regions with similar soils.

Assessing soil nitrogen availability in contrasting cropping systems at the end of transition to organic production

2011 ◽  
Vol 91 (4) ◽  
pp. 493-501 ◽  
Author(s):  
K. Liu ◽  
A. M. Hammermeister ◽  
P. R. Warman ◽  
C. F. Drury ◽  
R. C. Martin
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Availability ◽  
Transition Period ◽  
Cropping Systems ◽  
N Uptake ◽  
Cropping System ◽  
Organic Production ◽  
N Availability ◽  
Soil N ◽  
Soil Nitrogen Availability

Liu, K., Hammermeister, A. M., Warman, P. R., Drury, C. F. and Martin, R. C. 2011. Assessing soil nitrogen availability in contrasting cropping systems at the end of transition to organic production. Can. J. Soil Sci. 91: 493–501. Quantifying soil nitrogen (N) availability at the end of a transition period for converting conventional fields to organic fields could enhance N management during the subsequent organic crop production phase. Soil total N (Ntot), KCl extractable N (KCl N) and potentially mineralizable N (No) were determined at the end of a 3-yr transition period. A complementary greenhouse ryegrass N bioassay was conducted using soils collected from the treated field plots. The field experiment consisted of six cropping systems comprising two N inputs (legume-based vs. manure-based) and three forage cropping treatments (0, 1 or 2 yr of forage in 4-yr rotations). The N input treatments consisted of alfalfa meal in the legume-based cropping system (LBCS) and composted beef manure in the manure-based cropping system (MBCS). Orthogonal contrasts suggested no differences in Ntot or KCl N either between LBCS and MBCS or between no-forage and forage cropping systems. However, in the greenhouse study, high cumulative N inputs in the MBCS resulted in significantly higher ryegrass N uptake and potentially mineralizable soil N than in the LBCS. Ryegrass N uptake ranged from 101 to 139 kg ha−1, which should be an adequate N supply for the succeeding potato crop. In the greenhouse, a ryegrass N bioassay effectively identified the differences in soil N availability. Ryegrass N uptake was linearly related to cumulative soil amendment N inputs but had no apparent relationship with N o. A systems approach provided a good assessment of N availability at the end of the transition period to organic production.

Indianhead black lentil as green manure for wheat rotations in the Brown soil zone

1996 ◽  
Vol 76 (3) ◽  
pp. 417-422 ◽  
Author(s):  
R. P. Zentner ◽  
C. A. Campbell ◽  
V. O. Biederbeck ◽  
F. Selles
Keyword(s):  
Soil Water ◽  
Green Manure ◽  
Cropping Systems ◽  
N Uptake ◽  
Triticum Aestivum L ◽  
Canadian Prairies ◽  
Hard Red Spring Wheat ◽  
Brown Soil ◽  
Growing Seasons ◽  
Soil Zone

Frequent use of summerfallow (F) to reduce the water deficit associated with cereal cropping in the Canadian prairies has resulted in severe erosion and a reduction in N-supplying power of the soils. It has been suggested that it may be feasible to use annual legumes as green manure (GM) to supply the N requirements and snow trapping to enhance soil water recharge for a subsequent cereal crop. Our objective was to test the feasibility of employing this management strategy for the Brown soil zone of southwestern Saskatchewan, by comparing yields and N uptake of hard red spring wheat (W) (Triticum aestivum L.) grown in a 3-yr rotation with Indianhead black lentil (Lens culinaris Medikus) (i.e., GM-W-W) with that obtained in a monoculture wheat system (i.e., F-W-W). Both cropping systems were operated for 6 yr, from 1988 to 1993, with all phases of the rotations present each year. The results showed that grain yields of wheat after GM were generally significantly (P < 0.05) lower than those after F, primarily because the GM reduced the reserves of available spring soil water. These results occurred despite the fact that five of the six growing seasons had above average precipitation. Yields of wheat grown on stubble were unaffected by rotation. Grain N concentration was greater for wheat grown on GM partial-fallow than for wheat grown on conventional-F in the final 3 yr of the study which was due mainly to the lower wheat yields in the GM system (i.e., yield dilution). Our results suggest that, for annual legume GM to be used successfully in the Brown soil zone, producers should seed it as early as possible (late April to early May) and terminate the growth of the legume by the first week of July, even if this means foregoing some N2 fixation. Key words: Summerfallow, soil water, grain protein, N content, soil nitrogen

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