Some Carbohydrate Fractions of a Gray Wooded Soil as Influenced by Cropping Systems and Fertilizers

Khan, Shahamat U.

doi:10.4141/cjss69-030

Cited by 16 publications

(4 citation statements)

References 4 publications

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“…Some workers have observed differences in the proportion of soil N present as alpha-amino acid l{ and in the relative distribution of amino acids in soils under different cultural and chemical treatments (Stevenson 1956;Porter et aI., 1964;Gupta and Reuszer,1967). In other studies, no differences in the relativs amounts of the acid-soluble N, amino acid N, ammonium N and amino sugar N were noted in soils having dilTerent cropping histories and treated with difierent kinds of organic materials r (Young and Mortensen, 1958;Sowden, 1968 (Toogood and Lynch, 1959) and < 3% organic maIIer (Khan, 1969). These plots were established in 1930 by the University of Alberta, and a complete history has been reported elsewhere (Toogood et aL, 1962).…”

Section: Introductionmentioning

confidence: 88%

“…These plots were established in 1930 by the University of Alberta, and a complete history has been reported elsewhere (Toogood et aL, 1962). Surface Ap horizons from plots 1 to 6 and 8 in the flve-year rotation of grains and legumes (wheatoats-barley-legume-legume) and the wheat-fallow sequence were collected in May, L969, in the manner described in a previous publication (Khan, 1969 (Toogood et aL.,1962).…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen Fractions in a Gray Wooded Soil as Influenced by Long-Term Cropping Systems and Fertilizers

Khan¹

1971

Can. J. Soil. Sci.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Nitrogen Fractions in a Gray Wooded Soil as Influenced by Long-Term Cropping Systems and Fertilizers

Khan¹

1971

Can. J. Soil. Sci.

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“…The higher levels of soil organic C in the five-year WOBHH rotation are reflected in higher levels of soil carbohydrates and humic acids compared to the WF rotation. 13,14,4 Carbohydrates and humic acids are the more active and reactive components of soil organic carbon. Higher levels of these forms of C may enhance soil nutrient cycling, microbial biomass, and soil aggregate formation and stability.…”

Section: Rotation Contributions To Soil Quality: a Long-term Investmentmentioning

confidence: 99%

Growing Season Nitrous Oxide Emissions from a Gray Luvisol as a Function of Long-term Fertilization History and Crop Rotation

2017

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SummaryThe Breton Plots were established by the Department of Soils at the University of Alberta in 1929. Within the Breton Plots research site, numerous long-term plot experiments have been conducted over the years. This paper summarizes results from the Breton Classical Plots (est. 1930), the Breton Hendrigan Plots (est. 1980), the Breton Tillage Straw Nitrogen plots (est. 1979) and the Breton Nitrogen Immobilization Plots (est. 1982). The experiments were established to find suitable cropping rotations and fertilizer management strategies appropriate for the Gray Wooded soils developed on glacial till in the Breton area of Alberta. Long-term results from the plots show that production challenges on these soils can be addressed with proper nutrient (fertilizer, manure) and residue management and the incorporation of perennial legume forage crops into annual crop rotations.

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“…However, Ketcheson and Beauchamp (1912) (Millar 1955 (Khan 1969) and also the quality of the humic acids (Khan 1970) One cycle of the rotation was required to establish all the treatments. In three subsequent cycles (1960-63, 1964-6'7, and 1968-71) Black (1965).…”

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confidence: 99%

Effects of Fertilizer, Barnyard Manure, and Crop Residues on Irrigated Crop Yields and Soil Chemical Properties

Dubetz¹,

Kozub²,

Dormaar³

1975

Can. J. Soil. Sci.

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Dvsnrz, S., Kozus, G. C. aNo Donueen, J. F. 19'75. Effects of fertilizer, barnyard manure, and crop residues on irrigated crop yields and soil chemical properties. Barnyard manure, N fertilizer, corn stovers, and sugar beet tops were incorporated into the soil singly and in combination in an irrigated four-course rotation (sweet corn, soft spring wheat, sugar beets, and sugar beets) that completed four cycles. The application of manure at27 tlha every 4 yr increased the organic matter (OM), N, P, and K of the soil and increased yields of I st-yr sugar beets by 3lVc in the last cycle. When 66 kg N/ha was combined with the manure, yields of lst-yr sugar beets increased by 53Vc. The responses by the 2nd-yr sugar beets were smaller. Manure, and manure plus N fertilizer, increased yields of sweet corn by I I and 287c, bur wheat yields were unaffected. The benefits of manure and N fertilizer became apparent during the second cycle and increased with advancing years. One cycle of the rotation was required to establish all the treatments. In three subsequent cycles (1960-63, 1964-6'7, and 1968-71)

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Some Carbohydrate Fractions of a Gray Wooded Soil as Influenced by Cropping Systems and Fertilizers

Cited by 16 publications

References 4 publications

Nitrogen Fractions in a Gray Wooded Soil as Influenced by Long-Term Cropping Systems and Fertilizers

Nitrogen Fractions in a Gray Wooded Soil as Influenced by Long-Term Cropping Systems and Fertilizers

Growing Season Nitrous Oxide Emissions from a Gray Luvisol as a Function of Long-term Fertilization History and Crop Rotation

Effects of Fertilizer, Barnyard Manure, and Crop Residues on Irrigated Crop Yields and Soil Chemical Properties

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