scholarly journals Soil Microbial Population and Soil Enzymatic Activity in Finger Millet as Influenced by Effect of Planting Geometry, Methods of Establishment and Nutrient Sources

2018 ◽  
Vol 7 (03) ◽  
pp. 2096-2102
Author(s):  
Narayan Hebba ◽  
B.K. Ramachandrappa ◽  
M.N. Thimmegouda ◽  
Mudala giriyappa ◽  
G.P. Brahmaprakash
Keyword(s):  
Enzymatic Activity ◽  
Finger Millet ◽  
Microbial Population ◽  
Nutrient Sources ◽  
Soil Enzymatic Activity ◽  
Soil Microbial ◽  
Planting Geometry ◽  
Soil Microbial Population

scholarly journals Study of Soil Microbial Population and Enzyme Activities under Jasmine Cultivation as Influenced by Nutrient Sources

2021 ◽  
pp. 32-42
Author(s):  
B. Bhakiyathu Saliha ◽  
B. Banupriya ◽  
P. Balasubramaniam ◽  
R. Indirani
Keyword(s):  
Enzyme Activities ◽  
Tamil Nadu ◽  
Microbial Population ◽  
Nutrient Deficiencies ◽  
Npk Fertilizers ◽  
Nutrient Sources ◽  
Soil Microbial ◽  
Jasminum Sambac ◽  
Soil Microbial Population

Multi nutrient deficiencies in soil have been reported with increasing frequency over the past two decades on a worldwide scale, is considered as an important factor that reduces yield and affects the quality of harvested products. Nutrient cycling and transformation of in soil is influenced by microbes and the availability of organic and inorganic nutrients to plants and microbes can both be controlled through enzyme activities. Keeping this in view a field experiment was conducted at O. Alangulam village of Thiruparankundram block, Madurai district, Tamil Nadu during 2016-18 to evaluate the influence of organic and inorganic sources of nutrients on soil microbial population and enzyme activities and optimize the sulphur requirement of Jasmine (Jasminum sambac) which plays a key role in enhancing the yield and quality of flowers. The significantly higher bacterial population of 124 × 106 CFU g-1 was observed in the treatment that received pressmud as sulphur source @ 60 g sulphur/plant/year along with RDF (recommended dose of fertilisers were applied @ 60:120:120 g of N:P2O5:K2O/plant/ year in the form of urea, SSP and MOP).This was followed by the treatment that received pressmud @ 40 g sulphur/plant/year along with RDF (111 × 106 CFU g-1). Application of inorganic NPK fertilizers without organics decreased the activities of dehydrogenase and aryl sulphatase enzymes. The flower yield hectare-1 ranged from 3.8 to 15.4 tonnes ha-1as influenced by various nutrient sources. Application of RDF along with Gypsum @ 60 g sulphur/ plant/year recorded significantly higher yield followed by the treatment that received RDF along with Pressmud @ 60 g sulphur/plant/year.

scholarly journals Dynamics of Soil Microbial Population and Enzymes Activities under Distillery Spentwash Irrigation

2019 ◽  
pp. 1-8
Author(s):  
Karthika Vadivel ◽  
G. Rajannan ◽  
S. Avudainayagam
Keyword(s):  
Field Experiment ◽  
Microbial Population ◽  
Block Design ◽  
Growth Period ◽  
Recommended Dose ◽  
Treatment Schedule ◽  
Soil Enzymatic Activity ◽  
Soil Microbial ◽  
Distillery Spentwash ◽  
Soil Microbial Population

Spentwash is a rich source of organic matter and nutrients like nitrogen, phosphorus, potassium, calcium and sulphur. The effect of different levels and methods of spentwash application on soil enzymatic activity was examined through a field experiment. The field experiment was conducted using Sesame VRI (Sv) 2 as a test crop at Research and Development Farm, The Sakthi Sugars Pvt. Ltd., Appakkudal, Erode District. The experiment was formulated with six treatments with four replications, laid out in Randomised Block design. As per the treatment schedule the calculated quantity of biomethanated distillery spentwash for pre-sown application was uniformly applied to the plots before sowing viz., 25, 50, 75,100% along with recommended dose of NP for four treatments viz., 100%, 75%, 50%, 25% and Recommended dose NPK was treated as one treatment (control).The soil samples were collected at 30 days intervals and analysed for the changes in soil microbial population and enzyme activities. The results of the study showed that the microbial population and enzymatic activities of the soil were substantially increased throughout the crop growth period due to biomethanated distillery spentwash application.

scholarly journals Carbon and Microbial Dynamics in Soil on Biochar Compost Plus Treatment

2020 ◽  
Vol 17 (2) ◽  
pp. 138-143
Author(s):  
Wahyu Purbalisa ◽  
Ina Zulaehah ◽  
Dolty Melyga W. Paputri ◽  
Sri Wahyuni
Keyword(s):  
Soil Carbon ◽  
Microbial Population ◽  
Organic Fertilizer ◽  
Organic Soil ◽  
Microbial Consortia ◽  
Soil Microbial ◽  
Randomized Design ◽  
Soil Microbial Population ◽  
Compost Treatment ◽  
Screen House

Carbon and microbes in the soil fluctuated from time to time due to various things. This study aims to determine the dynamics of carbon and microbes in the soil in the treatment of biochar-compost. In addition to the use of biochar-compost, this research also uses nano biochar and enrichment with microbial consortia. The study was conducted at the screen house using a complete randomized design with three replications with following treatments: control / without organic fertilizer (P0), compost (P1), biochar-compost 1: 4 (P2), nano-biochar-compost 1: 4 (P3 ), biochar-compost + microbial consortia (P4), compost + microbial consortia (P5) and biochar-compost + microbial consortia (P6) with a dose of 2.5 tons/ha respectively. Biochar comes from corncobs. Compost biochar plus application was made before planting.  Parameters observed were soil carbon (C-organic), soil acidity (pH) at 7 DAA, 37 DAA and after harvest, and the total soil microbial population at 2 DAA and after harvest. Soil carbon was measured using Walkey and Black method measured by spectrophotometer, soil pH using a soil: water ratio = 1: 5 and measured by a pH meter, the total microbial population using Total Plate Counting (TPC) method. The results showed carbon and soil microbial populations decreased over time, except for microbial communities in a single compost treatment.

Modelling of microbial processes that govern degradation of organic substrates in soil, with special reference to pesticides

1990 ◽  
Vol 329 (1255) ◽  
pp. 369-373 ◽  
Keyword(s):  
Microbial Population ◽  
Large Fraction ◽  
Organic Substrates ◽  
High Concentration ◽  
Deterministic Models ◽  
Soil Microbial ◽  
Low Concentrations ◽  
Biokinetic Parameters ◽  
Soil Microbial Population ◽  
Kinetics Of

We tried to develop deterministic models for kinetics of 2,4-D breakdown in the soil based on the following considerations: (i) at low concentrations degradation results from maintenance consumption by a large fraction of the soil microbial population; (ii) at high concentration in addition to the maintenance consumption there is a growth-associated carbon incorporation by a small specific microbial population. Values for the biokinetic parameters are consistent with those commonly found in the literature. Comparison between observed and simulated curves suggests that a non-negligible part of the pesticidal carbon exists as microbial by-products.

Sign in / Sign up

Export Citation Format

Share Document