The Effect of Microwave Radiation on Prickly Paddy Melon (Cucumis myriocarpus)

The growing list of herbicide-resistant biotypes and environmental concerns about chemical use has prompted interest in alternative methods of managing weeds. This study explored the effect of microwave energy on paddy melon (Cucumis myriocarpus) plants, fruits, and seeds. Microwave treatment killed paddy melon plants and seeds. Stem rupture due to internal steam explosions often occurred after the first few seconds of microwave treatment when a small aperture antenna was used to apply the microwave energy. The half lethal microwave energy dose for plants was 145 J/cm2; however, a dose of at least 422 J/cm2 was needed to kill seeds. This study demonstrated that a strategic burst of intense microwave energy, focused onto the stem of the plant is as effective as applying microwave energy to the whole plant, but uses much less energy.

[1]  Graham Brodie,et al.  An assessment of microwave soil pasteurization for killing seeds and weeds , 2007 .

[2]  K. Hülsbergen,et al.  A method of energy balancing in crop production and its application in a long-term fertilizer trial , 2001 .

[3]  W. Marsden.  I and J , 2012 .

[4]  I. Heap,et al.  The occurrence of herbicide‐resistant weeds worldwide , 1997 .

[5]  Stuart O. Nelson,et al.  A Review and Assessment of Microwave Energy for Soil Treatment to Control Pests , 1996 .

[6]  Graham Brodie,et al.  Simultaneous heat and moisture diffusion during microwave heating of moist wood , 2007 .

[7]  Johan Grasman,et al.  Thermal runaway in microwave heating : a mathematical analysis , 2002 .

[8]  Graham Brodie,et al.  The Influence of Load Geometry on Temperature Distribution During Microwave Heating , 2008 .

[9]  M. Ward.  Thermal runaway and microwave heating in thin cylindrical domains , 2002 .

[10]  R. S. Ferriss.  Effects of microwave oven treatment on microorganisms in soil , 1984 .

[11]  Prickly paddy melon (Cucumis myriocarpus) poisoning of cattle. , 1988, Australian veterinary journal.

[12]  M. G. Merkle,et al.  Phytotoxicity of a UHF Electromagnetic Field , 1973, Nature.

[13]  G. Brodie.  Microwave Heating in Moist Materials , 2011 .

[14]  Jh Leigh,et al.  Plants of Western New South Wales , 2012 .

[15]  V. M. Kenkre,et al.  Thermal Runaway in Ceramics Arising from the Temperature Dependence of the Thermal Conductivity , 1997 .

[16]  C. A. Vriezinga.  THERMAL PROFILES AND THERMAL RUNAWAY IN MICROWAVE HEATED SLABS , 1999 .

[17]  I. Sartorato,et al.  Observations on the potential of microwaves for weed control , 2006 .

[18]  P. A. Ark,et al.  Application of High-Frequency Electrostatic Fields in Agriculture , 1940, The Quarterly Review of Biology.

[19]  M. G. Merkle,et al.  Ultrahigh-Frequency Electromagnetic Fields for Weed Control: Phytotoxicity and Selectivity , 1971, Science.

[20]  A. Galston.  Plant Physiology , 1967, Nature.

[21]  C. A. Vriezinga.  Thermal runaway and bistability in microwave heated isothermal slabs. , 1996 .

[22]  S. Powles,et al.  Glyphosate, paraquat and ACCase multiple herbicide resistance evolved in a Lolium rigidum biotype , 2006, Planta.

[23]  C. R. Vaughn,et al.  Insect Radar Cross-sections for Aerial Density Measurements and Target Classification , 1993 .

[24]  Jean Dickinson Gibbons,et al.  Nonparametric Statistical Inference , 1972, International Encyclopedia of Statistical Science.

[25]  C. Romero-Sierra,et al.  Effects of low-level microwave radiation on germination and growth rate in corn seeds , 1977, Proceedings of the IEEE.

[26]  Fawwaz Ulaby,et al.  Microwave Dielectric Spectrum of Vegetation - Part II: Dual-Dispersion Model , 1987, IEEE Transactions on Geoscience and Remote Sensing.

[27]  A. Leys,et al.  Evaluation of herbicides for control of summer-growing weeds on fallows in south-eastern Australia , 1990 .

[28]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[29]  Thomas J. Headlee.  The Differential Between the Effect of Radio Waves on Insects and on Plants , 1931 .

[30]  V. N. Tran,et al.  Effects of Microwave Energy on the Strophiole, Seed Coat and Germination of Acacia Seeds , 1979 .

[31]  Hans-R Langner,et al.  A Special Vegetation Index for the Weed Detection in Sensor Based Precision Agriculture , 2006, Environmental monitoring and assessment.

[32]  Z. Helsel.  Chapter 13 – Energy and Alternatives for Fertilizer and Pesticide Use , 1992 .