Soil tillage enhanced CO2 and N2O emissions from loamy sand soil under spring barley

2007 ◽  
Vol 97 (1) ◽  
pp. 5-18 ◽  
Author(s):  
Dmitri Chatskikh ◽  
Jørgen E. Olesen
Keyword(s):  
Spring Barley ◽  
Loamy Sand ◽  
Soil Tillage ◽  
N2o Emissions ◽  
Sand Soil ◽  
Loamy Sand Soil

scholarly journals Inter-relationship between number of microorganisms and spring barley yield and degree of soil contamination with copper

2011 ◽  
Vol 50 (No. 6) ◽  
pp. 243-249 ◽  
Author(s):  
J. Kucharski ◽  
J. Wyszkowska
Keyword(s):  
Soil Contamination ◽  
Growth And Development ◽  
Spring Barley ◽  
Positive Influence ◽  
Loamy Sand ◽  
Polluted Soils ◽  
Sand Soil ◽  
Loamy Sand Soil ◽  
Number Of Microorganisms ◽  
Microbial Number

The purpose of the study has been to determine the effect of soil contamination with copper on the modification of microbial number and spring barley yield and to assess whether spores of actinomycete Streptomyces odorifer and Streptomyces viridis were used for detoxification of copper polluted soils. The tests were performed in a pot experiment, which was conducted on two types of soil: Eutric Cambisol soil derived from light loamy sand and Eutric Cambisol soil derived from light loam. The results showed that number of all analysed microorganisms was significantly negatively correlated with a degree of soil contamination by copper, but positively correlated with the yield of spring barley. In general, the adverse impact of copper on the development of oligotrophic bacteria and their spores, eutrophic bacteria and their spores as well as actinomycetes and fungi was much weaker in more compact (light loam) than lighter (light loamy sand) soil. Copper had a strong toxic effect on spring barley and significantly inhibits the growth and development of the plants. An inoculum containing spores of Streptomyces viridis and Streptomyces odorifer did not alleviate the negative response of spring barley to copper contamination of soil, although it had positive influence on the growth of some microorganisms.

scholarly journals Undersowing Italian ryegrass diminishes nitrogen leaching from spring barley

2000 ◽  
Vol 9 (3) ◽  
pp. 201-216 ◽  
Author(s):  
R. LEMOLA ◽  
E. TURTOLA ◽  
C. ERIKSSON
Keyword(s):  
Spring Barley ◽  
Peat Soil ◽  
Drainage Water ◽  
Italian Ryegrass ◽  
Soil Tillage ◽  
N Leaching ◽  
Sand Soil ◽  
Total N ◽  
Water Well ◽  
Water Spring

Nitrogen (N) leaching from spring barley with and without undersown Italian ryegrass was studied in Jokioinen, south-western Finland during five years (summer 1993–spring 1998) in 1.7 m deep lysimeters (Ø0.9 m) filled to 1.1 m with clay, silt, sand and peat soil. Tillage was performed in mid- October or in May, before sowing of the barley and ryegrass for the next season. In the second, third and fourth years of the experiment, total N leaching from barley without undersown ryegrass was 15, 7.9,32 and 38 kg ha-1 y-1 in clay, silt, sand and peat soil, respectively. Undersowing reduced N leaching by 52,31,68 and 27%. The reduction in N leaching from clay and sand when barley was undersown with ryegrass was nearly the same as the increased total uptake of N (barley +ryegrass).In sand soil, ryegrass was able to diminish the NO 3-N concentration of the drainage water well below the limit for acceptable drinking water. Spring tillage reduced N leaching only on peat soil (16%). Slight competition between the main and the undersown crop was indicated by lower N contents of the barley yield.;

scholarly journals Effect of Macro- and Nano-Biosolid Fractions on Sorption Affinity and Transport of Pb in a Loamy Sand Soil

2019 ◽  
Vol 11 (12) ◽  
pp. 3460 ◽  
Author(s):  
Abdulaziz G. Alghamdi ◽  
Hesham M. Ibrahim
Keyword(s):  
Surface Area ◽  
Land Application ◽  
Surface Reactivity ◽  
Loamy Sand ◽  
Field Scale ◽  
Sand Soil ◽  
Loamy Sand Soil ◽  
Fraction Size ◽  
Potential Impact ◽  
Potential Mobility

Applications of large amounts of biosolid to agricultural lands have raised the concern over its potential impact on co-transport of metal contaminants. In this study, bulk biosolid was fractioned into six macro- and nano-biosolid fraction sizes. We investigated variations in the physicochemical properties of the different biosolid fraction sizes, and assessed sorption affinity and transport of Pb in a loamy sand soil. Decreasing biosolid fraction size from macro to nano resulted in consistent increases in surface area, surface charge, and a decrease in pore size. Biosolid particles >1000 µm showed similar surface properties that differ from biosolid particles < 1000 µm. Sorption affinity for Pb was larger on nano-biosolid as compared to all macro-biosolid fraction sizes. This is mainly attributed to the larger surface area and zeta potential of nano-biosolid, leading to increased surface reactivity and greater stability. Total amount eluted of Pb was increased in the presence of macro- and nano-biosolid by 21.3% and 45.6%, respectively. Our findings suggest that the application of the >1000 µm biosolid fractions can help to minimize adverse effects of biosolid applied in areas susceptible to potential environmental risk of contamination by heavy metals. Further assessment of potential mobility of nano-biosolid at the field scale is needed before the recommendation of including such approach during land application of biosolid.

A Study of Compaction and Crop Yields in Loamy Sand Soil After Seven Years of Reduced Tillage

1986 ◽  
Vol 29 (2) ◽  
pp. 0389-0392 ◽  
Author(s):  
Jonathan Chaplin ◽  
Mike Lueders ◽  
David Rugg
Keyword(s):  
Crop Yields ◽  
Loamy Sand ◽  
Reduced Tillage ◽  
Sand Soil ◽  
Loamy Sand Soil

Controlled Release Starch Granule Formulations Reduce Herbicide Leaching in Soil Columns

1992 ◽  
Vol 6 (2) ◽  
pp. 317-321 ◽  
Author(s):  
Rick A. Boydston
Keyword(s):  
Controlled Release ◽  
Starch Granule ◽  
Soil Column ◽  
Loamy Sand ◽  
Starch Granules ◽  
Soil Columns ◽  
Sand Soil ◽  
Water Dispersible ◽  
Loamy Sand Soil ◽  
Water Dispersible Granule

Experimental controlled release starch granules (CRSG) containing 5.3% a.i. (w/w) norflurazon or 6% a.i. (w/w) simazine retarded the leaching of both herbicides in loamy sand soil columns when compared to commercial formulations of norflurazon [80% (w/w) dry flowable] or simazine [90% (w/w) water dispersible granule]. Barley bioassays indicated norflurazon and simazine remained in the surface 0 to 2.5 cm of soil when applied as CRSG formulations and moved to a depth of 15 cm when applied as commercial dry formulations and leached with 6 cm of water. CRSG placed on pre-wetted soil columns began to release norflurazon by 7 d at 25 C or 14 d at 15 C, and subsequent leaching moved norflurazon beyond the top 2.5 cm of the soil column.

scholarly journals Inoculation and Soil Texture Effects on Yield and Yield Components of Mungbean

2018 ◽  
Vol 10 (9) ◽  
pp. 6 ◽  
Author(s):  
Andre A. Diatta ◽  
Wade E. Thomason ◽  
Ozzie Abaye ◽  
Larry J. Vaughan ◽  
Thomas L. Thompson ◽  
...  
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Soil Texture ◽  
Loamy Sand ◽  
Plant Residue ◽  
Silt Loam ◽  
Sand Soil ◽  
Loamy Sand Soil ◽  
Group I ◽  
Number Of Seeds

Mungbean [Vigna radiata (L.) Wilczek] is a short-duration and relatively drought-tolerant crop grown predominantly in the tropics. This grain legume can improve soil fertility through biological nitrogen (N) fixation. To assess the effects of Bradyrhizobium (group I) inoculation on yield and yield attributes of mungbean, a greenhouse study was conducted during Fall 2016 with two mungbean cultivars (‘Berken’ and ‘OK2000’), two inoculum treatments (inoculated and uninoculated), and two soil textures (loamy sand and silt loam). Pots were laid out in a completely randomized design and treatment combinations were replicated seven times. The main effects of cultivar and soil texture significantly (P ≤ 0.05) affected mungbean seed weight and plant residue mass. Seed yield (13%), plant residue (22%), and protein content (6%) of OK2000 were significantly higher than Berken cultivar. A 31% seed yield and 40% plant residue increase were recorded on silt loam soil compared to loamy sand soil. Significant increase in plant height (18%) and number of pods per plant (21%) were also recorded when mungbean plants were grown on silt loam compared to loamy sand soil. Bradyrhizobium inoculation significantly increased the number of pods per plant, the number of seeds per plant, and seed yield. [Cultivar × inoculation] and [cultivar × soil texture] interactions had significant (P ≤ 0.05) effects on number of seeds per pods and plant height, respectively. Understanding the agronomic practices and soil physical properties that may limit mungbean production could help in optimizing its establishment and growth in non-traditional growing areas.

Efficacy and Economic Analysis of Texas Panicum (Panicum texanum) Management Systems in Corn (Zea mays)

1990 ◽  
Vol 4 (4) ◽  
pp. 754-758 ◽  
Author(s):  
W. Carroll Johnson ◽  
Benjamin G. Mullinix
Keyword(s):  
Zea Mays ◽  
Economic Analysis ◽  
Loamy Sand ◽  
Management Systems ◽  
Sand Soil ◽  
Corn Production ◽  
Net Returns ◽  
Loamy Sand Soil

Studies on the efficacy and economic analysis of Texas panicum management systems in corn were conducted in Georgia on a loamy sand soil in 1987, 1988, and 1989. Management systems that included butylate, EPTC, atrazine plus tridiphane, atrazine plus pendimethalin, atrazine plus trifluralin, paraquat, or ametryn acceptably control Texas panicum. Corn yields were not affected significantly by the Texas panicum management systems. Overall net returns calculated for corn production indicated that systems which included postemergence applications of atrazine, pendimethalin, trifluralin, paraquat, ametryn, or cultivation alone gave the highest net returns. Systems which included butylate, EPTC, or tridiphane frequently had significantly lower net returns.

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