Yield and N uptake of barley on two artificially eroded soils in north-central Alberta

1997 ◽  
Vol 77 (2) ◽  
pp. 317-322
Author(s):  
R. Pradhan ◽  
R. C. Izaurralde ◽  
M. Nyborg ◽  
S. S. Malhi
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
N Uptake ◽  
Potassium Nitrate ◽  
Hordeum Vulgare L ◽  
North Central ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Use Efficiency ◽  
Topsoil Removal

Topsoil depth is an indirect indicator of soil quality and crop productivity. A 2-yr field study was conducted in north-central Alberta with the following objectives: (1) to determine aboveground barley dry matter yield, N uptake, and fertilizer-use efficiency (FUE) in two artificially eroded soils of contrasting properties, and (2) to assess the effectiveness of KNO3 and urea in compensating for lost productivity. Field experiments were conducted on an Orthic Gray Luvisol (Site 1) and on an Eluviated Black Chernozem (Site 2) in 1991 and 1992. The treatments consisted of three depths of topsoil removal (0, 10 and 20 cm) and three N fertilizers (KNO3 and urea at 150 kg N ha−1, and the control). The plots were sown to barley (Hordeum vulgare L.). Yields and N uptake of aboveground barley dry matter decreased with each increment of topsoil removal and were lowest in the 20-cm topsoil removal. Fertilizer N improved yields and N uptake at each depth of erosion. In most of the erosion treatments barley yields and N uptake tended to be greater with KNO3 than with urea. The effectiveness of each N source, however, varied with site. At the 20-cm depth of erosion, KNO3 was more effective than urea. The trend in fertilizer-use efficiency increased with depth of erosion at Site 1 but decreased at Site 2. Key words: Artificial erosion, barley, fertilizer-use efficiency, potassium nitrate, urea

scholarly journals Effect of Phosphorous Application on Uptake, Yield and Fertilizer Use Efficiency under Rice-Rice and Rice-Sunflower Systems in High P Soils

Agropedology ◽  
2019 ◽  
Vol 26 (2) ◽  
Author(s):  
A. Srinivas ◽  
◽  
P. Surendra Babu ◽  
A. Madhavi ◽  
G.E.C.H. Vidyasagar ◽  
...  
Keyword(s):  
Field Experiments ◽  
Cropping Systems ◽  
Sunflower Seeds ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Fertilizer Requirement ◽  
P Fertilizer ◽  
P Utilization ◽  
Use Efficiency ◽  
P Removal

Field experiments on P accumulated soils were conducted during 2009-10 and 2010-11 to assess (i) P fertilizer requirement and (ii) P fertilizer use efficiency using 32P isotope in rice–rice and rice–sunflower (rabi) systems. Four treatments in kharif (T1: 100%, T2: 75%, T3: 50% and T4: 25%) recommended dose of phosphorus (RDP) and three treatments in rabi (T1: 100%, T2: 75%, T3: 50% RDP) were tested. A uniform dose of 100% recommended 48 kg ha-1 of N and 24 kg ha-1 of K were applied along with P treatments. The P removal by both grain and straw by both crops under rice-rice system was at par with 100 and 75% RDP. The percent P utilization in entire system revealed that 75% RDP gave better utilization of applied P to a tune of 26% compared to 22% realized by 100% RDP in each crop. Similar trend of P removal by rice and sunflower seeds in rice-sunflower system was observed. Percent P utilization in both crops was 24.5% under 100% RDP and 27.2% under 75% RDP. The study clearly indicated 25% reduction in P fertilization for both cropping systems in high P soils.

scholarly journals Celery Yield Responds to Phosphorus Rate But Not Phosphorus Placement on Histosols

HortScience ◽  
1993 ◽  
Vol 28 (12) ◽  
pp. 1168-1170 ◽  
Author(s):  
L. Espinoza ◽  
C.A. Sanchez ◽  
T.J. Schueneman
Keyword(s):  
Field Experiments ◽  
Soil Surface ◽  
Apium Graveolens ◽  
Soil Test ◽  
Band Placement ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Fertilizer Recommendations ◽  
P Fertilizer ◽  
Use Efficiency

Four field experiments were conducted during two production seasons to evaluate soil-test P fertilizer recommendations for celery (Apium graveolens var. dulce) produced on Histosols, which often are linked hydrologically to environmentally sensitive wetlands, and to evaluate band placement as a strategy for improving P fertilizer-use efficiency in celery in such areas. Phosphorus was applied (broadcast or banded) at 0,50, 100,150, and 200 kg P/ha. Broadcast P was surface-applied and disked into the soil ≈ 15 cm deep 1 day before planting. Banded P was applied 5 cm below the soil surface and 5 cm to the side of each celery row. Total above-ground mass, marketable trimmed yield of celery, and yield of the larger grade sizes increased with P rate in all experiments. Band P placement was not a viable strategy for improving P fertilizer-use efficiency for celery. However, our results indicate that previous soil-test-based P fertilizer recommendations for celery were too high for the cultivars grown currently, and improved P fertilizer-use efficiency can be obtained with revised soil-test calibrations.

Improving Nitrogen Fertilizer Use Efficiency in Surface- and Overhead Sprinkler-Irrigated Cotton in the Desert Southwest

2017 ◽  
Vol 81 (6) ◽  
pp. 1401-1412 ◽  
Author(s):  
K. F. Bronson ◽  
D. J. Hunsaker ◽  
J. Mon ◽  
P. Andrade-Sanchez ◽  
J. W. White ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Desert Southwest ◽  
Use Efficiency ◽  
Overhead Sprinkler
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