TIF Mulching Reduced the Rates of Fumigants

LI Wei1,2,3,SONG Dong-bao1,YAN Dong-dong2,3,MAO Lian-gang2,3,GUO Mei-xia2,3,4,WANG Qiu-xia2,3,4,LI Yuan2,3,4,CAO Ao-cheng2,3,4(1.College of Bio-safty Science and Technology,Hunan Agricultural University,Changsha 410128,China;2.Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China;3.Key Laboratory of Pesticide Chemistry and Application Technology,Ministry of Agriculture,Beijing 100193,China;4.Team-Innovation of Beijing Modern Agriculture and Industrial Technology Innovation System,Beijing 100029,China)

TIF;1,3-dichloropropene;root-knot nematodes;soil fumigation

Evaluate the effect of totally impermeable film(TIF) on root-knot nematodes and its potential in improving tomato yields when the soil was fumigated with 1,3-dichloropropene and metham-sodium.[Methods] Both 1,3-dichloropropene and metham-sodium were applied to tomato plots in two greenhouses,respectively,where the conditions were similar and the occurrence of nematodes was serious,in two different sites in suburb Beijing.The plots were mulched with standard polyethylene(PE) film and TIF,respectively.[Results] When the rate of 1,3-dichloropropene was at 100 kg a.i./ha,the galling index in plots mulched with TIF was significantly lower than those covered with PE film.While the rate was at 200 kg a.i./ha,there was no significant difference between galling indices where,respectively,mulched with TIF and PE film.The tomato yields,in plots mulched with TIF,were significantly higher than those mulched with PE film in both sites when the rates were the same,however.The reduction of nematodes and the galling index was not significantly different when the rate of metham-sodium was at 420 kg a.i./ha but mulched,respectively,with TIF and PE film.However,the tomato yield in plots mulched with TIF was significantly higher than those mulched with PE film.[Conclusions] TIF mulching of TIF can significantly reduce the emission and the rate of fumigants,and increase the yield of tomato.