The impact of long-term application of inorganic nitrogen fertilizers and manure on changes of selected properties of organic matter in sandy loam soil

Adsorption isotherms were obtained for buthidazole {3-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinone}, VEL 3510 {1-β,β-dimethoxy-1-methyl-3-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]urea}, tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea}, and fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4 (1H)-pyridinone} on soil organic matter (H- and Ca-saturated), Ca-montmorillonite, and Cape Fear sandy loam soil. Prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] was included as a reference. The order of adsorption on all adsorbents was fluridone ≥ prometryn > > tebuthiuron ≥ VEL 3510 > buthidazole. Fluridone adsorption on the various adsorbents was: H-organic matter > Ca-montmorillonite > Ca-organic matter > > Cape Fear sandy loam. Tebuthiuron, VEL 3510, and buthidazole adsorption on the various adsorbents was in the order: H-organic matter > Ca-organic matter = Ca-montmorillonite > Cape Fear sandy loam. Adsorption of all herbicides increased with decreasing pH, suggesting that the adsorption mechanism was molecular under neutral pH conditions and ionic under acidic conditions. All of the herbicides were adsorbed in high amounts as protonated species on IR-120-H cation exchange resin and in low amounts as molecular species on IR-400-Cl anion exchange resin. Buthidazole and VEL 3510 were adsorbed in high amounts as anionic species by the IR-400-Cl exchange resin at high pH levels.

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Changes in soil organic matter over 70 years in continuous arable and ley-arable rotations on a sandy loam soil in England

European Journal of Soil Science ◽

10.1111/ejss.12415 ◽

2017 ◽

Vol 68 (3) ◽

pp. 305-316 ◽

Cited By ~ 12

Author(s):

A. E. Johnston ◽

P. R. Poulton ◽

K. Coleman ◽

A. J. Macdonald ◽

R. P. White

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Sandy Loam ◽

Sandy Loam Soil ◽

Loam Soil

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Spatial variation of nitrous oxide emission between interrow soil and interrow plus row soil in a long-term maize cultivated sandy loam soil

Geoderma ◽

10.1016/j.geoderma.2012.03.005 ◽

2012 ◽

Vol 181-182 ◽

pp. 2-10 ◽

Cited By ~ 20

Author(s):

Yanjiang Cai ◽

Weixin Ding ◽

Jiafa Luo

Keyword(s):

Nitrous Oxide ◽

Spatial Variation ◽

Sandy Loam ◽

Nitrous Oxide Emission ◽

Sandy Loam Soil ◽

Loam Soil

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Aggregate strength and mechanical behaviour of a sandy loam soil under long-term fertilization treatments

European Journal of Soil Science ◽

10.1046/j.1365-2389.2002.00424.x ◽

2002 ◽

Vol 53 (1) ◽

pp. 129-137 ◽

Cited By ~ 48

Author(s):

L.J. Munkholm ◽

P. SchjØnning ◽

K. Debosz ◽

H. E. Jensen ◽

B.T. Christensen

Keyword(s):

Mechanical Behaviour ◽

Sandy Loam ◽

Sandy Loam Soil ◽

Loam Soil ◽

Aggregate Strength

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Soil water drying and recharge rates as affected by tillage under continuous barley and barley-canola cropping systems in northwestern Canada

Canadian Journal of Soil Science ◽

10.4141/s00-029 ◽

2001 ◽

Vol 81 (1) ◽

pp. 45-52 ◽

Cited By ~ 14

Author(s):

R H Azooz ◽

M A Arshad

Keyword(s):

Soil Moisture ◽

Soil Water ◽

Sandy Loam ◽

Time Domain Reflectometry ◽

Sandy Loam Soil ◽

Soil Conditions ◽

Silt Loam ◽

Silt Loam Soil ◽

Loam Soil ◽

The Impact

In areas of the northwestern Canadian Prairies, barley and canola are grown in a short growing season with high rainfall variability. Excessively dry soil in conventional tillage (CT) in dry periods and excessively wet soil in no-tillage (NT) in wet periods could cause a significant decrease in crop production by influencing the availability of soil water. The effects of CT, NT and NT with a 7.5-cm residue-free strip on the planting rows (NTR) on soil water drying (–dW/dt) and recharge (dW/dt) rates were studied in 1992 and 1993 during wet and dry periods to evaluate the impact of NTR, NT and CT systems on soil moisture condition. The soils, Donnelly silt loam and Donnelly sandy loam (both Gray Luvisol) were selected and soil water content by depth was measured by time domain reflectometry. Water retained at 6 matric potentials from –5 to –160 kPa were observed. In the field study, –dW/dt was significantly greater in CT than in NT in the silt loam for the 0- to 30-cm layer during the first 34 d after planting in 1992. The 0- to 30-cm soil layer in CT and NTR dried faster than in NT during a period immediately following heavy rainfall in the silt loam in 1993. The drying coefficient (–Kd ) was significantly greater in CT and NTR than in NT in the silt loam soil in 1993 and in the sandy loam soil in 1992 in the top 30-cm depth. The recharge coefficient (Kr) was significantly greater in NT and NTR than in CT for the silt loam soil. The NTR system increased the –dW/dt by 1.2 × 10-2 to 12.1 × 10-2 cm d-1 in 1992 and 1993 in the silt loam soil and by 10.2 × 10-2 cm d-1 in 1993 in the sandy loam soil as compared with NT. The dW/dt was 8.1 × 10-2 cm d-1 greater in NTR in 1992 and 1993 in the silt loam soil and was 1.9 × 10-2 greater in NTR in 1992 than in CT in the sandy loam soil. The laboratory study indicated that NT soils retained more water than the CT soils. The NTR practice maintained better soil moisture conditions for crop growth than CT in dry periods than NT in wet periods. Compared with NT, the NTR avoided prolonged near-saturated soil conditions with increased soil drying rate under extremely wet soil. Key words: Water drying, water recharge, water depletion, wet and drying periods, hydraulic properties, soil capacity to retain water

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Influence of Sewage Sludge Application on Organic Matter Content, Micro-Organisms and Microbial Activities of a Sandy Loam Soil

The Influence of Sewage Sludge Application on Physical and Biological Properties of Soils ◽

10.1007/978-94-009-7930-7_12 ◽

1983 ◽

pp. 141-166 ◽

Cited By ~ 4

Author(s):

X. Stadelmann ◽

O. J. Furrer

Keyword(s):

Organic Matter ◽

Sewage Sludge ◽

Sandy Loam ◽

Organic Matter Content ◽

Matter Content ◽

Sandy Loam Soil ◽

Microbial Activities ◽

Loam Soil ◽

Micro Organisms ◽

Sludge Application

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Effect of tillage and fertilization on inorganic and organic soil phosphorus

Canadian Journal of Soil Science ◽

10.4141/cjss93-038 ◽

1993 ◽

Vol 73 (3) ◽

pp. 359-369 ◽

Cited By ~ 21

Author(s):

I. P. O'Halloran

Keyword(s):

Surface Layer ◽

Sandy Loam ◽

Sandy Loam Soil ◽

Fertilizer Treatment ◽

Soil Organic C ◽

P Fractionation ◽

Organic C ◽

No Till ◽

Loam Soil ◽

The Impact

This study was conducted to evaluate the impact of tillage and fertilization practices on soil organic carbon (organic-C) and the distribution of phosphorus between inorganic (Pi) and organic (Po) pools in a clay and sandy loam soil under a continuous corn (Zea mays L.) production system. Tillage treatments were established in the fall of 1981. The soils for this study were sampled (0- to 10-cm and 10- to 20-cm) in June 1988. Treatments consisted of three types of tillage: (i) conventional (CT): fall moldboard ploughing with two spring diskings; (ii) reduced (RT): with either fall chisel ploughing (1981–1986) or no fall tillage (1987) followed by one spring disking, and (iii) no-till (NT); and two types of fertilization (i) inorganic (I): 170 kg N ha−1. 80 kg P2O5, ha−1, 75 kg K2O ha−1, and (ii) organic fertilizer (O): dairy manure applied to give 170 kg N ha−1 plus 80 kg P2O5, ha−1 from inorganic P fertilizer. Even though a lime application was made in the fall of 1985, soil pH was significantly lower in the I fertilizer treatments. Reduction of tillage intensity resulted in a lower pH in the surface layer of the sandy loam soil. Tillage did not affect soil organic-C, or total soil Po (soil-Po) in either soil. Compared with the I fertilizer treatment, the O fertilizer treatment resulted in increased levels of soil organic-C and soil-Po only in the sandy loam soil. Labile levels of Po in the soil were not affected by treatments. Increased soil-Po levels possibly resulted from an increase in stable Po complexes. Moderately labile Po levels were not affected by treatments in the clay soil. In the sandy loam soil, O fertilization decreased moderately labile Po levels in the surface layer of the NT treatment, and increased this P fraction in the 10- to 20-cm soil layer of the RT and CT treatments. In the surface layer of both soils, labile levels of Pi were greater for the O fertilization treatment (approximately 40 and 47% higher for the clay and sandy loam, respectively), and were lower under CT. Increased labile Pi levels were associated with the O fertilizer treatment in the 10- to 20-cm depth increment in the sandy loam soil only, suggesting a greater downward movement of P with manure applications. Key words: Conventional tillage, zero-tilled, no-till, reduced tillage, manure, P fractionation

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