Search Results

• • 26 

    Academic Journals

  • Sort by: sorttype.publication.date.desc Newest sorttype.publication.date.asc Oldest sorttype.relevance Relevance

• Nitrate ammonification and its relationship to the accumulation of ammonium in a Vertisol subsoil

  Authors:K.L. Page, R.C. Dalal, and N.W. MenziesFrom:Australian Journal of Soil Research (Vol. 41, Issue 4) Peer-Reviewed

  July 20035,522 words Author abstract High concentrations of ammonium (up to 270 kg N/ha) have been observed in a Vertisol soil below 1 m depth near Warra in south-east Queensland. This study examined the possibility that increased water movement into the...

• Contribution of natural and drained wetland systems to carbon stocks, C[O.sub.2], [N.sub.2]O, and C[H.sub.4] fluxes: an Australian perspective

  Authors:K.L. Page and R.C. DalalFrom:Soil Research (Vol. 49, Issue 5) Peer-Reviewed

  Aug. 20119,984 words Report 1520LGreenhouse gas (GHG) flux from wetland systems, both in their natural state and following drainage, has not been well accounted for in the carbon accounting process. We review GHG production from both natural and...

• Kinetics of zinc desorption from Vertisols

  Authors:Y.P. Dang, R.C. Dalal, D.G. Edwards, and K.G. TillerFrom:Soil Science Society of America Journal (Vol. 58, Issue 5) Peer-Reviewed

  September-October 199479 words Article

   Abstract Only

• Changes in total soil organic carbon stocks and carbon fractions in sugarcane systems as affected by tillage and trash management in Queensland, Australia

  Authors:K.L. Page, M. Bell, and R.C. DalalFrom:Soil Research (Vol. 51, Issue 7-8) Peer-Reviewed

  October-November 20133,953 words Author abstract, Rep... 1630LThe use of sugarcane trash (tops and residue) retention systems has been reported to lead to increases in total soil organic carbon (TOC) stocks. However, these increases have generally been small and confined to the...

• Management of the major chemical soil constraints affecting yields in the grain growing region of Queensland and New South Wales, Australia--a review

  Authors:K.L. Page, R.C. Dalal, J.B. Wehr, Y.P. Dang, M. Kopittke, G. Kirchhof, et al.From:Soil Research (Vol. 56, Issue 8) Peer-Reviewed

  Nov. 201812,548 words Report 1540LIn the grain growing region of Queensland and New South Wales, Australia, crop production occurs predominantly under semiarid, rainfed conditions. Vertosols dominate the soils used and many are prone to structural...

• Using quantity/intensity relationships to assess the potential for ammonium leaching in a Vertosol

  Authors:K.L. Page, N.W. Menzies, and R.C. DalalFrom:Australian Journal of Soil Research (Vol. 41, Issue 2) Peer-Reviewed

  Mar. 20034,121 words Article High concentrations of ammonium (up to 0.1 cmol/kg) have been observed below 1 m depth in a Vertosol soil near Warra in south-eastern Queensland. This study examined whether ammonium leaching could be responsible for...

• Nitrous oxide and methane emissions from soil are reduced following afforestation of pasture lands in three contrasting climatic zones

  Authors:D.E. Allen, D.S. Mendham, Bhupinderpal-Singh, A. Cowie, W. Wang, R.C. Dalal, et al.From:Australian Journal of Soil Research (Vol. 47, Issue 5) Peer-Reviewed

  Aug. 20098,042 words Report Land use change from agriculture to forestry offers potential opportunities for carbon (C) sequestration and thus partial mitigation of increasing levels of carbon dioxide (C[O.sub.2]) in the atmosphere. The effects of...

• Conservation agriculture effects on soil properties and crop productivity in a semiarid region of India

  Authors:J. Somasundaram, M. Salikram, N.K. Sinha, M. Mohanty, R.S. Chaudhary, R.C. Dalal, et al.From:Soil Research (Vol. 57, Issue 2) Peer-Reviewed

  Mar. 20199,605 words Report 1400LConservation agriculture (CA) including reduced or no-tillage and crop residue retention, is known to be a self-sustainable system as well as an alternative to residue burning. The present study evaluated the effect of...

• What determines soil organic carbon stocks in the grazing lands of north-eastern Australia?

  Authors:D.E. Allen, M.J. Pringle, S. Bray, T.J. Hall, P.O. O'Reagain, D. Phelps, et al.From:Soil Research (Vol. 51, Issue 7-8) Peer-Reviewed

  October-November 20137,170 words Report 1480LThis study aimed to unravel the effects of climate, topography, soil, and grazing management on soil organic carbon (SOC) stocks in the grazing lands of north-eastern Australia. We sampled for SOC stocks at 98 sites...

• Diagnosis, extent, impacts, and management of subsoil constraints in the northern grains cropping region of Australia

  Authors:Y.P. Dang, R.C. Dalal, S.R. Buck, B. Harms, R. Kelly, Z. Hochman, et al.From:Australian Journal of Soil Research (Vol. 48, Issue 2) Peer-Reviewed

  Mar. 20108,352 words Report Productivity of grain crops grown under dryland conditions in north-eastern Australia depends on efficient use of rainfall and available soil moisture accumulated in the period preceding sowing. However, adverse subsoil...

• Subsoil nitrogen mineralisation and its potential to contribute to N[H.sub.4] accumulation in a Vertosol

  Authors:K.L. Page, R.C. Dalal, N.W. Menzies, and W.M. StrongFrom:Australian Journal of Soil Research (Vol. 41, Issue 1) Peer-Reviewed

  Jan. 20034,429 words Article High concentrations of N[H.sub.4.sup.+] (up to 270 kg N/ha) have been observed in a Vertosol below 1 m depth in south-east Queensland. This study examined the possibility that mineralisation associated with the removal...

• Electromagnetic induction sensing of soil identifies constraints to the crop yields of north-eastern Australia

  Authors:Y.P. Dang, R.C. Dalal, M.J. Pringle, A.J.W. Biggs, S. Darr, B. Sauer, et al.From:Soil Research (Vol. 49, Issue 7) Peer-Reviewed

  Oct. 20118,553 words Report 1440LSalinity, sodicity, acidity, and phytotoxic concentrations of chloride ([Cl.sup.-]) in soil are major constraints to crop production in many soils of north-eastern Australia. Soil constraints vary both spatially across...

• Free light fraction carbon and nitrogen, a physically uncomplexed soil organic matter distribution within subtropical grass and leucaena-grass pastures

  Authors:K.A. Conrad, R.C. Dalal, D.E. Allen, R. Fujinuma, and Neal W. MenziesFrom:Soil Research (Vol. 56, Issue 8) Peer-Reviewed

  Nov. 20188,060 words Report 1420LQuantifying the size and turnover of physically uncomplexed soil organic matter (SOM) is crucial for the understanding of nutrient cycling and storage of soil organic carbon (SOC). However, the C and nitrogen (N)...

• Assessing carbon lability of particulate organic matter from [delta][sup.13]C changes following land-use change from [C.sub.3] native vegetation to [C.sub.4] pasture

  Authors:R.C. Dalal, B.A. Cowie, D.E. Allen, and S.A. YoFrom:Soil Research (Vol. 49, Issue 1) Peer-Reviewed

  Feb. 20114,062 words Report 1630LLand-use change from [C.sub.3] vegetation ([delta][sup.13]C values, 30%o to -24%o) to [C.sub.4] vegetation ([delta][sup.13]C values, -14%o to -11%o) provides a useful quantitative technique for estimating organic C...

• Soil carbon sequestration and density distribution in a Vertosol under different farming practices

  Authors:W.J. Wang, R.C. Dalal, and P.W. MoodyFrom:Australian Journal of Soil Research (Vol. 42, Issue 8) Peer-Reviewed

  Dec. 15, 20045,329 words Article Agricultural soils play an important role in the global carbon (C) cycling and can act as a significant C sink if managed properly. The long-term (33 years) effects of no till (NT) v. conventional till (CT), stubble...

• Organic carbon stocks in cropping soils of Queensland, Australia, as affected by tillage management, climate, and soil characteristics

  Authors:K.L. Page, R.C. Dalal, M.J. Pringle, M. Bell, Y.P. Dang, B. Radford, et al.From:Soil Research (Vol. 51, Issue 7-8) Peer-Reviewed

  October-November 20138,164 words Author abstract, Rep... 1510LResearch both nationally and internationally has indicated that no-till (NT) management used in combination with stubble retention has the potential to increase soil organic carbon (SOC) stocks in cropping soils...

• Changes in soil organic carbon and nitrogen after 47 years with different tillage, stubble and fertiliser management in a Vertisol of north-eastern Australia.

  Authors:K.L. Page, R.C. Dalal, S.H. Reeves, W.J. Wang, Somasundaram Jayaraman, and Y.P. DangFrom:Soil Research (Vol. 58, Issue 4) Peer-Reviewed

  July 20207,837 words Report 1640LNo-till (NT) farming has been widely adopted to assist in reducing erosion, lowering fuel costs, conserving soil moisture and improving soil physical, chemical and biological characteristics. Improvements in soil...

• Nitrification in a Vertisol subsoil and its relationship to the accumulation of ammonium-nitrogen at depth

  Authors:K.L. Page, R.C. Dalal, N.W. Menzies, and W.M. StrongFrom:Australian Journal of Soil Research (Vol. 40, Issue 5) Peer-Reviewed

  Sept. 20024,406 words Article Unusually high concentrations of ammonium have been observed in a Vertisol below 1 m depth in southeast Queensland. This study investigated the possibility that an absence of nitrification is allowing this ammonium to...

• Long-term trends in fertility of soils under continuous cultivation and cereal cropping in southern Queensland. IX *. Simulation of soil carbon and nitrogen pools using CENTURY model

  Authors:C.R. Chilcott, R.C. Dalal, W.J. Parton, J.O. Carter, and A.J. KingFrom:Australian Journal of Soil Research (Vol. 45, Issue 3) Peer-Reviewed

  May 20075,116 words Article 1660LCultivation and cropping of soils results in a decline in soil organic carbon and soil nitrogen, and can lead to reduced crop yields. The CENTURY model was used to simulate the effects of continuous cultivation and...

• Total soil organic matter and its labile pools following mulga (Acacia aneura) clearing for pasture development and cropping. 2. Total and labile nitrogen

  Authors:R.C. Dalal, B.P. Harms, E. Krull, W.J. Wang, and N.J. MathersFrom:Australian Journal of Soil Research (Vol. 43, Issue 2) Peer-Reviewed

  Mar. 20056,843 words Article Mulga (Acacia aneura) woodlands and open forests occupy about 150 Mha in Australia, and originally occupied 11.2 Mha in Queensland. Substantial areas (1.3 Mha) of the mulga vegetation have been cleared in Queensland,...