Balanced Fertilization along with Farmyard Manures Enhances Abundance of Microbial Groups and Their Resistance and Resilience against Heat Stress in a Semi-arid Inceptisol

Abstract

The impact of long-term (36-year) application of balanced fertilizers and farmyard manures (FYM) on the abundance of microbial groups (bacteria, fungi, actinomycetes, Pseudomonas, Azotobacter, ammonia-oxidizing bacteria) and their resistance and resilience against heat stress was investigated in a semi-arid Inceptisol at New Delhi, India. Surface soils from selected treatments [control, nitrogen (N), N and phosphorus (P), NP and potassium (K), NPK + FYM] under a maize crop were assessed immediately after sampling (0-day) and at 1, 14, 28, and 56 day(s) after heat stress (48 • C for 24 h). The heat stress significantly reduced the microbial groups by 20 to 80%. Recovery after stress was 60 to 100% within 56 days. Resistance and resilience of fungi and actinomycetes were greater than other groups of organisms. Ammonia-oxidizing bacteria (AOB) were found to be most sensitive with the lowest resistance index. Application of NPK + FYM was most effective in enhancing the resistance and resilience of soil microorganisms against heat stress.

Long‐Term Chemical Fertilization Along with Farmyard Manure Enhances Resistance and Resilience of Soil Microbial Activity against Heat Stress

“…, Kumar et al. ). In addition, the higher OM content in these soils probably buffered the impact of the heat stress.…”

“…More details of the rational of adopting this approach for quantification of resistance and resilience are given elsewhere (Kumar et al. ).…”

Yield and Irrigation Water Use Efficiency of Bottle Gourd (Lagenaria sicenaria L.) In Response to Different Irrigation Methods and Planting Geometries

“…Lesser plant spacing also help in retaining moisture of soil for longer period, which provided optimal condition for soil microbial communities that helped in nutrient transformation and ultimately improved nutrient supplying capacity of soil as also advocated by Kumar et al, (2013).…”

Impact of balanced fertilization on nutrient acquisition, fibre yield of jute and soil quality in New Gangetic alluvial soils of India

“…Integration of FYM with inorganic fertilizers significantly enhanced bacterial, fungal, ACT and PSM (Kumar et al, 2013). Yevdokimov et al (2008) found that addition of increasing amounts of N fertilizers increased soil fungal biomass significantly.…”