Changes in Labile Pools of Soil Organic Carbon in Relation with Crop Productivity in Different Long-term Fertilizer Treatments
Journal Title: International Journal of Plant & Soil Science - Year 2017, Vol 18, Issue 3
Abstract
Studying the dynamics of soil organic carbon (SOC) is important for understanding the carbon stabilization into different pools. Thus, a 25-year old experiment was used to assess the impact of double rice cropping system with addition of organics and grades of fertilization on labile carbon pools and crop yield sustainability in an Inceptisol in southern India. There was significant decrease (p<0.05) in bulk density with increase in the use of organics over control. Green manure applied (in combination with NPK or NPK+farmyard manure) showed greater mineralisable carbon hence, could say greater microbial activity and carbon turnover. The lowest value of microbial quotient (MQ) in the control indicated a poor quality soil with impairment of its capacity for C cycling. The better nutritional environment to microbial population in the soils under balanced fertilization along with organics increased the quotient. The higher respiration quotient (qCO2) in the control treatment suggested a less efficient use of available carbon by the microbes there.
Authors and Affiliations
A. Krishna Chaitanya, M. Suresh, Shyam Prasad Majumder, Ch. Sreenivas
Keywords
Related Articles
- EP ID EP316559
- DOI 10.9734/IJPSS/2017/35554
- Views 113
- Downloads 0
Isolation and Molecular Identification of Colletotrichum gloeosporioides from Infected Peanut Seeds
Peanut (Arachis hypogaea (L) cv. Margenta) seeds are currently, significantly considered as an important source of protein and vegetable oil. Anthracnose caused by Colletotrichum gloeosporioides is a fungal disease from...
Evaluation of Botanical and Chemical Fungicides to Control Foot and Root Rot of Chickpea
Effective disease management is essential for high quality and maximum production. The experiment was conducted on the experimental field of Sylhet Agricultural University, Sylhet to evaluate the effects of different che...
Preliminary Studies on Fruit Lignification Time Interval and Phenological Traits of Selected Okra (Abelmoschus esculentus L Moench) Genotypes Grown in Southern Nigeria
Aims: To determine the time interval between fruit formation and lignification (hardening of fruits) and phonological traits in three short, early maturing and three tall, late maturing genotypes of Okra (Abelmoschus esc...
Varied Responses and Tolerant Mechanisms towards Salinity Stress in Plants
Among several abiotic stresses, which retard crop production on at least 1/5th of irrigated land worldwide, high saline conditions seems to be the most severe environmental stress. The plant can reveal the effects of sal...
Evaluation of Soil Fertility Status and Land Suitability for Smallholder Farmers’ Groundnut and Maize Production in Chisamba District, Zambia
A study was conducted to determine the soil fertility status and the suitability of land for the smallholder farmers’ sustainable production of groundnut and maize in Chisamba District of Zambia. Composite soil samples (...