SEASONAL-CHANGES IN MICROBIAL BIOMASS IN SOILS CROPPED WITH PALMAROSA(CYMBOPOGON-MARTINII L) AND JAPANESE MINT (MENTHA-ARVENSIS L) IN SUBTROPICAL INDIA
Dd. Patra et al., SEASONAL-CHANGES IN MICROBIAL BIOMASS IN SOILS CROPPED WITH PALMAROSA(CYMBOPOGON-MARTINII L) AND JAPANESE MINT (MENTHA-ARVENSIS L) IN SUBTROPICAL INDIA, Biology and fertility of soils, 19(2-3), 1995, pp. 193-196
Changes in microbial C, N, and P were investigated for 1 year in two s
oils with similar physicochemical properties but supporting different
crops under subtropical conditions. One was cropped with palmarosa (Cy
mbopogon martinii L.) and the other with Japanese mint (Mentha arvensi
s L.). Both the season and the type of cropping had a significant infl
uence on changes in the soil microbial biomass. In general, soil micro
bial biomass C, N, and P were highest in summer months and lowest in m
idwinter. Soil microbial biomass levels and microbial C:N and C:P rati
os were higher and N:P ratios lower under palmarosa soil than under mi
nt.