Microbial biomass nitrogen and mineralization-immobilization processes of nitrogen in soils incubated with various organic materials

Mineralization and microbial biomass formation in upland soil amended with some tropical plant residues at different temperatures

“…Similar relationships between C/N ratios and N mineraliza-tion-immobilization of added O.M. were reported by Hirose (1973) and Aoyama and Nozawa (1993).…”

Evaluation of the SPAD Value in Faba Bean (Vicia fabaL.) Leaves in Relation to Different Fertilizer Applications

“…On the other hand, the favorable effect of straw and oilseed rape residues on growth and consequently on the yield of the plant might be due to the indirect effect of straw and oilseed rape residues. It has been reported that the incorporation of rice straw into soil caused a decrease in the amount of inorganic nitrogen in the soil available to the plant (Yoneyama and Yoshida, 1977;Aoyama and Nozawa, 1993;Nishio et al, 1993). Immobilization of N in soils due to incorporation of oilseed rape residues has also been reported Oensen et al, 1997;Trinsoutrot et al, 2000).…”

Changes in microbial biomass after continuous application of azolla and rice straw in soil

“…were reported previously by Aoyama and Nozawa (1993). Recently, in two model experiments, we have also determined the pattern of C and N mineralization and changes in microbial biomass in soils amended with plant residues such as azalla, water hyacinth, dhaincha, cowpea, sunhemp, and rice straw (Azmal et al 1996a, b).…”