The effect of microwave soil treatment on rice production under field production

Khan, M.J., Brodie, G., and Gupta, D. (2017) The effect of microwave soil treatment on rice production under field production. Transactions of the ASABE, 60 (2). pp. 517-525.

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Interest in chemical-free weed management practices has increased to overcome herbicide resistance in sustainable crop production systems. In this study, we examined microwave (MW) irradiation as an alternative weed management strategy in a direct-seeded rice crop under field conditions. Pre-emergence MW irradiation (2.45 GHz, 600 W, 120 s) of the soil was assigned in a randomized complete block design with five replications. The projection of 560 J cm(-2) of MW energy into the soil gave a temperature gradient of 80 degrees C to 90 degrees C in the top 5 to 6 cm, which induced a 70% to 80% reduction in weed establishment through the soil seedbank compared to the untreated control. Therefore, a 34% increase in the grain yield of rice (9.0 t ha(-1)) was achieved compared to the non-MW scenario (6.7 t ha(-1)). Microwave-based weed control could be effective in managing herbicide-resistant weed biotypes in cropping systems.

Item ID: 50489
Item Type: Article (Research - C1)
ISSN: 2151-0040
Keywords: Microwave, Pre-emergence weed management, Rice, Soil
Funders: Rural Industry Research and Development Corporation (RIRDC)
Date Deposited: 20 Sep 2017 09:34
FoR Codes: 30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3002 Agriculture, land and farm management > 300210 Sustainable agricultural development @ 50%
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3004 Crop and pasture production > 300409 Crop and pasture protection (incl. pests, diseases and weeds) @ 50%
SEO Codes: 82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8204 Summer Grains and Oilseeds > 820402 Rice @ 50%
85 ENERGY > 8599 Other Energy > 859999 Energy not elsewhere classified @ 50%
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