Soil physical parameters

Suffusion is one of the four types of internal erosion and accounts for 46% of erosion phenomena in earth dams. Suffusion is an erosion of fine particles inside the soil structure that move out of the voids between coarse particles caused by permeability flow. Identification of internal erosion is necessary to mitigate the loss of humans and property as underground erosion occurs.

6p viwarmachine 01-07-2023 4 3   Download

In this study, 341 Bacillus sp. strains were isolated from agricultural soils of Turkey. The potent extracellular lipase producer was selected. It was identified by 16S rRNA, named as Bacillus cereus ATA179. Optimal nutritional and physical parameters for lipase production were determined. Sucrose as the carbon source, (NH4 )2 HPO4 as the nitrogen source, CaCl2 as the metal ion were obtained. The best results of physical parameters were stated at 45°C, pH 7.0, shaking rate 50 rpm, inoculation amount 7% and inoculum age 24 h.

14p thiencuuchu 27-11-2021 17 1   Download

The texture, structure, colour etc. are important soil physical parameters. Similarly, soil reaction (pH), organic matter, macro and micronutrients etc. are also important soil chemical parameters. These properties play important role for the soil fertility and determined after soil testing (Brady and Weil, 2004).

9p chauchaungayxua10 18-03-2021 9 2   Download

The magnitude and rate of P sorption mainly depend upon the properties of soils and phosphate sources. Soils differ widely in their chemical and physical makeup according to geological and geographical location.

5p angicungduoc8 07-11-2020 16 2   Download

Conservation agriculture (CA) has potential to changes soil physical, chemical and biological soil quality parameters compared to conventional tillage (CT) systems. The improved bio-physico-chemical soil quality in turn, affect the ecosystem services and sustainability of crop production system through counterbalancing the climate variability with the help of increasing sink for carbon sequestration within the soil. CA can also affect the functional diversity of soil microbes that essential for improved soil quality, crop production and many ecosystem services.

28p nguaconbaynhay6 24-06-2020 15 0   Download

The main objective of this study was to assess the effect of conventional and protected systems of farming on soil physical parameters. Texture across the various sites varied from sandy loam to clay loam. Mean of two years (2015 and 2016) revealed comparatively lower bulk density inside protected cultivation (1.12 Mg m-3 ) as compared to conventional system (1.24 Mg m-3 ). There were as such no differences were observed in particle density. However, porosity and water holding capacity differ inside protected and conventional system of production.

14p gaocaolon5 14-06-2020 8 2   Download

The present study was undertaken to collect baseline data on the Physico-chemical parameters from the Baigul reservoir of district - Udham Singh Nagar, Uttarakhand located in the Tarai region of Uttarakhand. The ecology of reservoir plays a vital role in biological productivity. The nutrient status of water and soil plays the most significant role in governing the production of planktonic organisms.

17p angicungduoc5 14-06-2020 16 0   Download

Following the industrial revolution in the nineteenth century, agricultural machinery and tractors became available for tillage operations. Different types of tillage systems have different tillage depths and capacity to change soil physical properties that affect the crop yield and quality. Important soil physical properties such as bulk density, penetration resistance, water infiltration, hydraulic conductivity and soil compaction are affected by tillage.

4p quenchua4 06-04-2020 18 1   Download

Different types of tillage systems have different tillage depths and capacity to change soil physical properties that affect the crop yield and quality. Important soil physical properties such as bulk density, penetration resistance, water infiltration, hydraulic conductivity and soil compaction are affected by tillage. A study on “Effect of various tillage methods on soil compaction” was conducted during Rabi season of year 2013-14 at village Ladwa, Hisar, Haryana (India).

6p quenchua4 06-04-2020 32 1   Download

Amongst six natural lignocellulosic waste/raw material screened, millet straw contained maximum cellulose (30 %) and physical and chemical pre-treatment yielded maximum cellulase activity. The composition of millet straw showed 30 % cellulose, 10 % hemicellulose, 8.73 % total organic carbon, 0.7 % total nitrogen and 0.8 ppm phosphorous. Amongst four fungi of genus Aspergillus isolated from local soil dumps of kitchen and garden waste, Aspergillus flavus showed maximum cellulase activity on CMC agar medium and used for degradation of millet straw.

17p cothumenhmong4 25-03-2020 11 1   Download

An investigation was carried out to know the variations in algal floristic and major nutrients of Hassan district soils. During the study periodic trips were made for soil samples. The soil samples were collected from all the eight taluks of Hassan district viz., Alur, Arkalgud, Arsikere, Belur, Channarayapatna, Hassan, Holenarasipura and Sakaleshpura. Collected soil samples were subjected for estimation of algal floristic composition and physic-chemical properties.

6p nguathienthan2 25-12-2019 10 0   Download

A study on quality analysis and characterization of Panchagavya, Jeevumrutha and Sasyamrutha was carried out in the departments of soil science, plant pathology and biochemistry, UBKV, coochbehar-736165, West Bengal during February, 2019. Motive of this work was to characterize these liquid organic manures according to their Physical properties, macro and micro nutrient Content, Microbial population and amount of growth promoters present in them. Jeevumrutha recorded highest values in most of the parameters followed by Panchagavya and Sasyamrutha.

9p nguathienthan2 25-12-2019 13 0   Download

Stripe disease of barley caused by Drechslera graminea (Rabenh.) Shoemaker is a widely distributed disease in many barley grown parts of the world, but it has assumed more importance with the introduction of some new high yielding varieties. The present investigations were undertaken during 2007-08 and 2008-09 crop seasons with a view of elicit information on Soil moisture had the positive correlation with disease incidence with values 0.83 and 0.84 on in controlling the disease.

4p quenchua2 16-12-2019 15 0   Download

A field experiment was conducted at the ICAR Research farm Medziphema, Nagaland (25°50′24″N latitude and 93°50′26″E longitude) during the summer season of 2017 with green gram as test crop. Organic manures viz. Farm Yard Manure (FYM) and vermicompost were combined with biofertilizers viz. Rhizobium and phosphate solubilizing bacteria (PSB) in different combinations and were evaluated in a Randomized Block Design with three replications.

10p kethamoi2 14-12-2019 21 0   Download

The Terminalia arjuna (Roxb.) Wight & Arn. (Combretaceae) is an important commercial crop in India. It has been utilized as a primary food for rearing of the tropical tasar silkworm, Antheraea mylitta by the rural and tribal people in India as a livelihood practice. Due to its continuous utilization for rearing of silkworm, majority of the T. arjuna block plantations have been showing sickness and susceptible for variety of pests and diseases.

8p kethamoi2 14-12-2019 9 0   Download

The present investigation entitled “Response of Integrated Nutrient Management on different physical characters of bael (Aegle marmelos Correa) cv. Narendra Bael-9” was carried out at Main Experiment Station, Horticulture, N. D. University of Agriculture and Technology, Kumarganj Faizabad (U.P.) 224 229 under sodic soil condition during the years 2014-15 and2015-16 to access the response of organic manure, inorganic fertilizer and Bio-fertilizers on different physical characters of bael fruit.

9p cothumenhmong1 11-12-2019 14 1   Download

In tillage tools used in India faces problem like, poor soil-tire interface, clod formation, compaction due to heavy traffic and timeliness in operation. Overcome to this practical problem, it was planned to develop a clod crusher cum planker for better seed bed preparation. To achieve this objective a prototype implement consisting of three different types of clod crusher rollers’ like square spike, round spike and spiral arrangement of spike were developed. The developed implement was tested in the field to evaluate its performance.

17p nguaconbaynhay1 04-12-2019 36 0   Download

The direct measurement of the soil water retention curve (SWRC) in a laboratory is time-consuming, difficult, and costly. Th us, many attempts have been made to predict the water retention curve indirectly from the physical and chemical properties of soil.

9p vimb123 12-01-2019 26 1   Download

The transport parameters are estimated under supportting of software Hydrus 1D using the inverse parameter estimation method. Results of the experiments showed that dispersion coefficient, distribution coefficient and mass transfer coefficient characterized the ammonium transport process in the Con Son soil and aquifers are compatible with mechanical and physical properties of Con Son soil matrix and porous media.

12p cumeo4000 01-08-2018 25 0   Download

Soil reactivity with chemical oxidants is also important when considering the costs of the use of chemical oxidation. Excessive loss of a chemical oxidant that is reacting with organics in soil, instead of reacting with the contaminants, may preclude the use of the technology as an economically viable approach to site remediation. Different chemical oxidation technologies are most appropriate for particular hydrogeologic conditions. For example, Fenton’s Reagant may not be ideal for groundwater with high concentrations of carbonate.

158p cao_can 29-12-2012 86 10   Download