scholarly journals Influence of natural saferock mineral on soil micro-bilogical parameters under rice-wheat cropping system

2019 ◽  
Vol 48 (1) ◽  
pp. 145-151
Author(s):  
Santosh Ranva ◽  
YV Singh ◽  
Neelam Jain ◽  
Deva Ram Bajiya
Keyword(s):  
Microbial Biomass Carbon ◽  
Cropping System ◽  
Basmati Rice ◽  
Mineral Fertilizers ◽  
Available N ◽  
Soil Microbial ◽  
Microbiological Parameters ◽  
Direct Seeded ◽  
High Yielding Varieties ◽  
Different Levels

A field experiment was conducted to study the effect of SafeRock Minerals (SRM) application on soil microbiological parameters in rice-wheat cropping system. The experiments consisted of two methods of rice and wheat establishment and six different levels of crop nutrition including SRM with mineral fertilizers and organic manure (FYM). The rice was grown in kharif (June to October) season through aerobic direct seeded condition and flooded transplanted system. During rabi (October to April) season wheat was cultivated by two establishment methods viz. system of wheat intensification (SWI) and conventional wheat. The high yielding varieties of Basmati rice (Pusa Basmati 1509) and wheat (HD 2967) were used in the experiment. The results revealed that the soils of rice and wheat crops showed significant improvement in available N, P and K and soil microbial parameters (enzymatic activities and microbial biomass carbon) due to the integrated application of 250 kg/ha SRM + 100% recommended dose of fertilizer (RDF) and 250 kg/ha SRM + 50% RDF (chemical) + 25% RDF (organic) and 250 kg/ha SRM + 50% organic-FYM (10.0 t/ha) over the sole SRM application under both the methods of stand establishment of rice as well as wheat.

Evaluation of Maize (Zea mays L.) + Legume Intercropping System for Productivity, Profitability, Energy Budgeting and Soil Health in Hill Terraces of Eastern Himalayan Region

2020 ◽  
Author(s):  
L. K. Baishya ◽  
Temjenna Jamir ◽  
N. Walling ◽  
D. J. Rajkhowa
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Microbial Biomass Carbon ◽  
Soil Health ◽  
Cropping System ◽  
Himalayan Region ◽  
Energy Productivity ◽  
Available N ◽  
Soil Microbial ◽  
Eastern Himalayan Region

Three-year (2014-2016) field experiment was conducted for evaluation of maize (Zea mays L.) based intercropping system for productivity, profitability, energy budgeting and soil health in Eastern Himalayan region. The treatments consisted of four sole crop viz. maize, soybean, groundnut, cowpea and six intercropping treatments viz. maize + groundnut (1:1), maize + soybean (1:1), maize + cowpea (1:1) and strip cropping of maize + groundnut (4:4), maize + soybean (4:4), maize + cowpea (4:4). The highest maize equivalent yield (10.2 t ha-1) was recorded in maize + groundnut cropping system (1:1) followed by maize + soybean (1:1) with 8.9 t ha-1. The highest SNBC (soil microbial biomass carbon) (66.2 mg g-1) and organic carbon (1.3%) were recorded with the cultivation of cowpea as a sole or intercrop. Strip cropping system, maize + cowpea (4:4) recorded the highest soil available N, P2O5 and K2O kg ha-1, highest energy efficiency (12.53) and energy productivity 955.01 g MJ-1

scholarly journals Impact of transgenic cottons expressing cry1Ac on soil biological attributes

2013 ◽  
Vol 59 (No. 3) ◽  
pp. 108-114 ◽  
Author(s):  
K. Velmourougane ◽  
A. Sahu
Keyword(s):  
Soil Microbial Biomass ◽  
Microbial Biomass Carbon ◽  
Soil Depth ◽  
Diversity Indices ◽  
Soil Microbial Activity ◽  
Bt Cotton ◽  
Available N ◽  
Cry1ac Gene ◽  
Soil Microbial ◽  
Biological Attributes

Three transgenic Bt cotton hybrids (RCH-2 Bt, Bunny Bt and NHH 44 Bt) expressing cry1Ac gene were evaluated for their effects on soil biological, microbiological and diversity attributes at 0–15 cm and 15–30 cm soil depth under field conditions. At both soil depths, soil respiration rate and fluorescein diacetate hydrolysis were the highest in the soil under Bt cotton grown followed by non-Bt soil, and by the control bulk soil, indicating no adverse effects of Bt cotton on soil microbial activity. Urease and dehydrogenase activities, reflecting potentially available N and the oxidative metabolism in soil, respectively, also increased in the sequence no-crop variant < non-Bt soil < soil under Bt cotton at both soil depths. A similar trend was found with the soil microbial biomass carbon, microbial population and microbial diversity indices. These results suggest that cultivation of Bt cotton expressing cry1Ac gene may not pose ecological or environmental risk.

scholarly journals Soil microbial and nutrient dynamics under different sowings environment of Indian mustard (Brassica juncea L.) in rice based cropping system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sunil Kumar ◽  
Ram Swaroop Meena ◽  
Rakesh Kumar Singh ◽  
Tariq Muhammad Munir ◽  
Rahul Datta ◽  
...  
Keyword(s):  
Brassica Juncea ◽  
Nutrient Dynamics ◽  
Microbial Biomass Carbon ◽  
Indian Mustard ◽  
Cropping System ◽  
Crop Productivity ◽  
Available Nitrogen ◽  
Soil Biodiversity ◽  
Nutrient Sources ◽  
Soil Microbial

AbstractFarmers are not growing diversified crops and applying huge amounts of agrochemicals and imbalanced fertilizers in the rice-wheat cropping system (RWCS), since the 1960s. The objective of this study was to evaluate the microbial and nutrient dynamics in Indian mustard (Brassica juncea L.) under various sowing environments and nutrient sources during Rabi season (October–March), 2015–2016. The experiment was laid out in the split-plot design with three sowing dates in main-plots, and eight nutrient sources in sub-plots. The maximum bacteria, fungi, and actinomycetes population, soil microbial biomass carbon (SMBC), dehydrogenase activities, and available nitrogen, phosphorus, potassium, and sulphur (NPKS) were recorded on November 17 sown crop, and the lowest was observed on December 7 sowing during both the years, and in the pooled analysis. Furthermore, applied nutrient sources, highest bacteria, fungi, and actinomycetes population, available NPKS, SMBC, and dehydrogenase activity were observed in 75% recommended dose of fertilizers (RDF) + 25% N through pressmud (PM) + Azotobacto + phosphorus solubilizing bacteria (PSB) than other nutrient sources. In conclusion, high demand and cost of chemical fertilizers can be replaced by 25% amount easily and locally available organic manures like PM compost to sustain the soil health and crop productivity. It will be helpful to restore the soil biodiversity in the RWCS and provide a roadmap for the researchers, government planners, and policymakers for the use of PM as a source of organic matter and nutrients.

scholarly journals Correlation Studies of Soil Properties with Yield of Rice in a Calciorthents

2021 ◽  
pp. 70-74
Author(s):  
Amit Kumar Pandey ◽  
Ashutosh Singh
Keyword(s):  
Crop Residue ◽  
Soil Health ◽  
Chemical Properties ◽  
Cropping System ◽  
Crop Productivity ◽  
Soil Microbial ◽  
Physico Chemical ◽  
Microbiological Parameters ◽  
Main Plot ◽  
Four Levels

Imbalanced use of nutrients through fertilizer have a deleterious effects on soil health, leading to unsustainable productivity. The present investigation was carried out to study the comparative effectiveness of compost and crop residue either alone or in combination of chemical fertilizer on physico chemical properties of soil, soil microbial biomass and crop yield in rice-wheat cropping system in Calciorthents at experimental farm of Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar in light texture and medium fertile soil. There were sixteen treatments which were replicated thrice in split plot design. Four level of NPK viz., no NPK, 50% NPK, 100% NPK and 150% NPK were kept as main plot treatments whereas four levels of organics viz., no manure, compost @ 10 t ha-1, crop residue and compost + crop residue were treated as sub-plot treatments. The correlation between rice yield and some physico-chemical and microbial attributes of soil were evaluated. Most of soil physical, chemical and microbiological parameters were positively correlated with grain and straw yield of rice. Thus the results suggest that integrated use of balanced inorganic fertilizers in combination with organic manure sustains a soil physico-chemical and microbiological environment of soil that is better for enhancing higher crop productivity.

scholarly journals Microbial Features Indicating the Recovery of Soil Ecosystem Strongly Affected by Mining and Ore Processing

2021 ◽  
Vol 18 (6) ◽  
pp. 3240
Author(s):  
Zuzana Feketeová ◽  
Andrej Hrabovský ◽  
Ivan Šimkovic
Keyword(s):  
Ph Value ◽  
Microbial Biomass Carbon ◽  
Natural Soil ◽  
Cellulolytic Activity ◽  
Limit Values ◽  
Risk Elements ◽  
Soil Microbial ◽  
Ore Processing ◽  
Microbiological Parameters ◽  
Availability Index

Tailings-derived soils formed from waste materials produced during mineral processing often exhibit extremes of pH, low content of organic matter and limited nutrient availability. The success of site revitalization depends mostly on the ability to maintain natural soil functions. We analyzed technogenic sediments from four selected localities in Slovakia defined as environmental burdens: Slovinky (SLS, SLD), Markušovce (MAS, MAD), Lintich (LIS, LID), Horná Ves (HVS, HVD) in the presented research. None of these sites has long been used for its original purpose. In all localities, the concentrations of several risk elements (As, Ba, Cd, Co, Cr, Cu, Ni, Pb, Zn) still significantly exceed the statutory limit values. Besides the content of risk elements, the amounts of organic carbon, total nitrogen, pH value and moisture level in technogenic substrates were determined. We evaluated selected microbiological parameters, including microbial biomass carbon (MBC), microbial respiration and cellulolytic activity to determine how soil organisms tolerate long-term pollution. In general, the values of microbiological parameters were not as low as one would expect. The results confirmed a negative correlation between MBC content and concentrations of several toxic metals (Co, Cr, Cu, Ni, Zn). The values of assessed microbial indicators were in several cases comparable to those in natural soils. We noticed the lowest metabolic quotient values (qCO2) in the heavily polluted locality HVS. The microbial quotient (qMic) was low in every locality except HVS, where the substrate availability index (SAI) was highest. The soil microbial community properties have shown that, despite adverse conditions, these emerging soils allow the growth and development of microorganisms to such an extent that they can adequately use available (although limited) nutrients. The data obtained suggest that these severely impacted soil ecosystems can restore their original environmental functions in time.

scholarly journals Effect of combined use of tillage and nutrient management practices on soil quality indicators and indices under maize (Zea mays) based cropping system in rainfed inceptisols

2020 ◽  
pp. 336-348
Author(s):  
K.L. Sharma
Keyword(s):  
Soil Quality ◽  
Management Practices ◽  
Nutrient Management ◽  
Microbial Biomass Carbon ◽  
Cropping System ◽  
Conventional Tillage ◽  
Western Himalayas ◽  
Available N ◽  
Tillage Practices ◽  
Combined Use

An experiment was conducted in the rainfed Inceptisols of Rakhdhiansar in Kandi areas of Western Himalayas of South Kashmir and Kumaon, India for four years to assess the influence of combined use of tillage and nutrient management treatments on soil quality under maize based cropping system. The experiment was initiated in a split plot design with three main and three sub-treatments using maize (Kanchan-510) as the test crop. The main experimental treatments were: T1: Conventional Tillage (CT) +Two Intercultures (Two IC), T2: Low Tillage (LT) +Two Intercultures (Two IC) and T3: Low Tillage (LT) + Weedicide + One Interculture (One IC). The three sub treatments were, T1: 100% N through organic sources (compost), T2: 50% N through organic sources + 50% N through inorganic sources and T3: 100% N through inorganic sources. The results of the present study clearly revealed that the tillage treatments did not significantly influence most of the soil quality parameters except available S, microbial biomass carbon (MBC) and Mean weight Diameter of Soil Aggregates (MWD). When averaged over nutrient levels, among the tillage practices, conventional tillage + Two IC recorded the highest available S of 20.87 kg ha-1. However, sub-sub treatments viz nutrient management significantly influenced the organic carbon (OC), available N, P S and boron, dehyrogenase assay (DHA), labile carbon (LC), bulk density (BD) and MWD. When averaged over tillage levels, the application of nutrients through inorganic sources recorded significantly highest available N (160.50 kg ha-1), P (30.67 kg ha-1) and K (207.87 kg ha-1 in soil. Finally, in terms of Relative Soil Quality Indices (RSQI), Low tillage + Two IC (0.87) and Low tillage + Weedicide + One IC (0.89) proved superior compared to Conventional Tillage + 2 IC (0.82). Similarly, when averaged over tillage levels, the order of performance of nutrient management treatments was:100% N through organic sources (0.93) > 50% N through organic sources + 50 % N through inorganic sources (0.84) > 100% N through inorganic sources (0.82). Though the interactions between tillage levels and nutrient management were not significant, but the combination of Low tillage practices with 100 % organic Source of nutrients was quite superior in maintaining relatively higher RSQI. Thus, the results of the present study and methodology used will be highly useful to different stake holders associated withland and soil quality management

Effect of Organic Amendments along with Fly Ash on Soil Quality under Vertisol (Typic Haplustert) of India

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
R Saha ◽  
Kamlesh Malakar ◽  
VASSANDA COUMAR ◽  
J SOMASUNDARAM ◽  
M Mohanty
Keyword(s):  
Fly Ash ◽  
Soil Quality ◽  
Incubation Period ◽  
Microbial Biomass Carbon ◽  
Soil Amendments ◽  
Poultry Manure ◽  
Organic Amendments ◽  
Available N ◽  
Soil Microbial ◽  
Combined Application

An incubation study was conducted to characterize soil quality as affected by organic amendments (FYM, biochar and, poultry manure @ 25 t ha-1) along with or without fly ash (@ 22.4 t ha-1) in Vertisol. Physical and chemical parameters of soil quality like pH, EC, bulk density, porosity, moisture content, organic carbon and available N, P, K measured at the end of incubation period i.e. 10th week showed that combined application of soil amendments (FYM + fly ash, biochar + fly ash, poultry manure + fly ash) had significantly better results than individual application of the respective soil amendments. Soil microbial biomass carbon (SMBC) and dehydrogenase enzyme activity (DHA) increased steadily up to 6th weeks of incubation with a marginal decrease during last phase. At the end of incubation period (10th week), SMBC and DHA was highest in the soil amended with FYM + fly ash; T (476.6 mg/kg of soil and 10.28 μg TPF g-1 soil h-1). The soils treated with 5 organic amendments particularly FYM and poultry manure along with fly ash showed best performance in terms of soil quality improvement in Vertisol.

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