Mathematical modelling of residue allelopathy: the effects of intrinsic and extrinsic factors

The mechanistic model of residue allelopathy that was constructed before only simulates allelopathic phenomena caused by decaying plant residues and does not include factors controlling expression of such phenomena. As both intrinsic and extrinsic factors are affecting the potential of residue allelopathy, the model has been developed further to include these factors. The concept of a constant for residue-allelopathic potential, functions for effects of temperature, water, and their combination on allelochemical concentrations were added to the model. As a result, the improved residue model is able to examine the responses to these phenomena under a wide variety of conditions. Several sets of published experimental data were compared with prediction from the model, and a good agreement has been achieved. Its significance in helping better understanding of residue allelopathy is discussed.

[1]  J. Taylor,et al.  Growth of ornamental plants irrigated with nutrient or polyethylene glycol solutions of different osmotic potentials , 1980, Plant and Soil.

[2]  R. Jessop,et al.  Differential phytotoxicity among species and cultivars of the genus Brassica to wheat , 1989, Plant and Soil.

[3]  K. Singh,et al.  Weight loss in relation to environmental factors during the decomposition of maize and wheat roots in a seasonally-dry tropical region , 1989 .

[4]  T. M. McCalla,et al.  Presence and Persistence of Phytotoxic Substances in Wheat, Oat, Corn, and Sorghum Residues1 , 1967 .

[5]  B. Summerell,et al.  Decomposition and chemical composition of cereal straw , 1989 .

[6]  F. Broadbent,et al.  Moisture Absorption, Mold Growth, and Decomposition of Rice Straw at Different Relative Humidities1 , 1975 .

[7]  G. S. Campbell,et al.  Low temperature or low water potemntial effects on the mictobial decomposition of wheat residue , 1986 .

[8]  Z. A. Patrick,et al.  INHIBITION OF RESPIRATION, GERMINATION, AND GROWTH BY SUBSTANCES ARISING DURING THE DECOMPOSITION OF CERTAIN PLANT RESIDUES IN THE SOIL , 1958 .

[9]  A. Smith,et al.  Influence of water potential on production of ethylene in soil. , 1977, Canadian journal of microbiology.

[10]  R. Kohli,et al.  Allelopathy in Agroecosystems , 2001 .

[11]  J. Lynch,et al.  Phytotoxicity of acetic acid produced in the anaerobic decomposition of wheat straw. , 1977, The Journal of applied bacteriology.

[12]  J. Lynch,et al.  THE KINETICS OF STRAW DECOMPOSITION IN RELATION TO ITS POTENTIAL TO PRODUCE THE PHYTOTOXIN ACETIC ACID , 1981 .

[13]  T. M. McCalla,et al.  Phytotoxicity Associated with Residue Management1 , 1978 .

[14]  D. Linscott,et al.  Phytotoxic Effect of Decaying Quackgrass (Agropyron repens) Residues , 1979, Weed Science.

[15]  M. R. Overcash,et al.  Carbon Transformations in the Land Areas Receiving Organic Wastes in Relation to Nonpoint Source Pollution: A Conceptual Model , 1980 .

[16]  T. McCalla,et al.  Phenolic Acids in Oats, Wheat, Sorghum, and Corn Residues and Their Phytotoxicity1 , 1966 .

[17]  I. R. Johnson,et al.  Plant and Crop Modelling: A Mathematical Approach to Plant and Crop Physiology , 1990 .

[18]  J. Lynch,et al.  On the concentration of acetic acid in straw and soil , 1980, Plant and Soil.

[19]  D. T. Parker.  Decomposition in the Field of Buried and Surface-Applied Cornstalk Residue1 , 1962 .

[20]  R. Kimber.  Phytotoxicity from plant residues. I. The influence of rotted wheat straw on seedling growth , 1967 .

[21]  J. Lynch,et al.  The role of water-soluble components in phytotoxicity from decomposing straw , 1982, Plant and Soil.

[22]  L. F. Elliott,et al.  Phytotoxins from anaerobically decomposing wheat straw , 1979 .

[23]  Inderjit,et al.  Allelopathy : organisms, processes, and applications , 1994 .

[24]  R. Kimber.  Phytotoxicity from plant residues , 1973, Plant and Soil.

[25]  L. F. Elliott,et al.  The Production of Phytotoxins from Surface Crop Residues 1 , 1977 .

[26]  J. Lynch,et al.  The chemical components and decomposition of wheat straw leaves, internodes and nodes , 1981 .

[27]  J. Lynch.  Production and phytotoxicity of acetic acid in anaerobic soils containing plant residues , 1978 .

[28]  T. McCalla,et al.  Stubble Mulch Studies: Effect of Sweetclover Extract on Corn Germination. , 1948, Science.

[29]  D. Mikkelsen,et al.  Effect of rice straw additions on production of organic acids in a flooded soil , 1977, Plant and Soil.

[30]  P. Bhowmik,et al.  Corn and Soybean Response to Allelopathic Effects of Weed and Crop Residues1 , 1982 .

[31]  Keith Paustian,et al.  Barley Straw Decomposition in the Field: A Comparison of Models , 1987 .