Dynamics of available phosphorus content in soil fertilized with different organic fertilizers in the background of increasing rates of nitrogen in cultivation of sugar beet
2005
Zimny, L., E-mail: [email protected] | Sniady, R. (Akademia Rolnicza, Wroclaw (Poland). Katedra Ogolnej Uprawy Roli i Roslin) | Galka, B. (Akademia Rolnicza, Wroclaw (Poland). Inst. Gleboznawstwa i Ochrony Srodowiska Rolniczego)
Chosen for study soils were fertilized with three different organic fertilizers: manure, vermicompost, stubble crop. All plots of experiment were fertilized with increasing rates of mineral nitrogen. It was found that the content of available phosphorus in the soil layer 0-30 cm decreased in the spring-summer period in the plots with ploughed down stubble crop. The same trend was observed in the summer-autumn period in the plots with vermicompost and without any organic fertilization. The concentration of available phosphorus in soil layer 30-60 cm increased in the spring-summer period and decreased in the summer-autumn period in all plots with organic fertilization
显示更多 [+] 显示较少 [-]