Weeds significantly reduce crop yield(34%)as compared to pests(18%)and pathogens(16%).Also,weeds are one of the most significant biotic factors contributing to declining yield.Various methods are used to control weeds...Weeds significantly reduce crop yield(34%)as compared to pests(18%)and pathogens(16%).Also,weeds are one of the most significant biotic factors contributing to declining yield.Various methods are used to control weeds in row crops.Traditional methods like manual weeding are time-consuming,labor-intensive,and tedious.Chemical treatment with use of herbicides is not eco-friendly.In view of all the above problems,a two-row tyned weeder was developed for managing weeds in row crops.The developed weeder consists of a main frame,engine,tynes,wheels,and handle.Response surface methodology(RSM)along with the central composite design was used to study the effect of independent variables of forward speed(1.5,2,and 2.5 km/h)and moisture content of soil(12%,14%,and 16%(w.b.))on response variables for the purpose of optimizing the operational parameters of the two-row tyned weeder.The optimized parameters for tyned weeder are forward speed of 2 km/h and moisture content of 14%.The weeding efficiency,plant damage,and field efficiency were 88.38%,6.46%,and 81.66%,respectively,at optimized parameters.The performance parameters such as field capacity,depth,and width of operation were 0.08 hm2/h,55 mm,and 600 mm,respectively.The savings in cost of operation and labor for the developed tworow tyned weeder over the manual hand wheel hoe were 76.11%and 92.86%,respectively.The payback period,break-even point,labor requirement,and performance index for the developed two-row tyned weeder were 1.12 a,104.5 h/a,10.35 manh/hm2,and 410.91,respectively.展开更多
基金financial support of the European Union under the REFRESH–Research Excellence for Region Sustainability and High-tech Industries(Grant No.CZ.10.03.01/00/22_003/0000048)via the Operational Programme Just Transition.
文摘Weeds significantly reduce crop yield(34%)as compared to pests(18%)and pathogens(16%).Also,weeds are one of the most significant biotic factors contributing to declining yield.Various methods are used to control weeds in row crops.Traditional methods like manual weeding are time-consuming,labor-intensive,and tedious.Chemical treatment with use of herbicides is not eco-friendly.In view of all the above problems,a two-row tyned weeder was developed for managing weeds in row crops.The developed weeder consists of a main frame,engine,tynes,wheels,and handle.Response surface methodology(RSM)along with the central composite design was used to study the effect of independent variables of forward speed(1.5,2,and 2.5 km/h)and moisture content of soil(12%,14%,and 16%(w.b.))on response variables for the purpose of optimizing the operational parameters of the two-row tyned weeder.The optimized parameters for tyned weeder are forward speed of 2 km/h and moisture content of 14%.The weeding efficiency,plant damage,and field efficiency were 88.38%,6.46%,and 81.66%,respectively,at optimized parameters.The performance parameters such as field capacity,depth,and width of operation were 0.08 hm2/h,55 mm,and 600 mm,respectively.The savings in cost of operation and labor for the developed tworow tyned weeder over the manual hand wheel hoe were 76.11%and 92.86%,respectively.The payback period,break-even point,labor requirement,and performance index for the developed two-row tyned weeder were 1.12 a,104.5 h/a,10.35 manh/hm2,and 410.91,respectively.
