نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم خاک، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران
2 گروه گیاه پزشکی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران
3 گروه خاکشناسی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The addition of organic fertilizers to soil not only changes its physical and chemical properties, but also affects the population of microorganisms, including nematodes. In this study the migration of second-stage juveniles of the root-knot nematode Meloidogyne incognita was investigated in soil columns treated with chicken manure for 18 weeks, under continuous saturation flow at 24 and 72 hours. The results showed that 24 hours after injection of the nematodes into the control column, the nematodes had moved in and against the direction of the water flow at short intervals from the injection site. Also, 72 hours after injection, the nematode population at the injection site decreased and the nematodes dispersed throughout the column in and against the direction of water flow. In the soil column treated with chicken manure, the nematode population was higher against the flow direction 24 hours after injection, and the distribution of nematodes in the soil column in and against the flow direction of water was more symmetrical 72 hours after injection. The addition of chicken manure to the soil caused a change in nematode movement by altering the physical properties, especially increasing the hydraulic conductivity and porosity of the soil.
کلیدواژهها [English]