Properties of acid soil

This study aims to evaluate the effect of fire on soil properties at Zone A5, Tram Chim National Park, Tam Nong district, Dong Thap province. Findings indicated that soil type was acid sulfate, soil structures were clay, clay-silt and silt-clay. pH was low while moisture was high. Electrical conductivity and bulk density were in the tolerance range for the Eleocharis community.

9p viohoyo 25-04-2024 5 2   Download

Continued part 1, part 2 of ebook "Elements of the nature and properties of soils (Third edition)" provide readers with content about: soil acidity, alkalinity, aridity, and salinity; organisms and ecology of the soil; soil organic matter; nutrient cycles and soil fertility; practical nutrient management; soil erosion and its control; soils and chemical pollution;...

346p hanlinhchi 11-11-2022 13 3   Download

Based on soil samples collected at different depths under the forests, this study aim to: (i) analyze changes in hydrolytic acidity and humus content in the soil; (ii) evalute SOC variation; (iii) analyze changing trends in the content of easily digestible nutrients and (iv) to analyze the relationship between humus content and soil chemical properties.

9p vilamborghini 12-10-2022 10 4   Download

A carboxymethylcellulose (CMC)-degrading bacterium was isolated from soil, identified as Bacillus methylotrophicus according to the physiological properties and analyses of 16S rRNA and a partial sequence of the gyrase A (gyrA) gene, and named as B. methylotrophicus Y37. The CMCase enzyme was purified to homogeneity by 20.4-fold with 21.73% recovery using single-step hydrophobic interaction chromatography and biochemically characterized. CMCase showed a molecular weight of approximately 50 kDa as determined by SDS-PAGE.

14p langthannam 29-12-2021 9 0   Download

Polymer blending as an efficient method for blending at least two polymers is usually used to create new materials with desirable physical properties. This article focuses on the biodegradability evaluation of polypropylene (PP) fibers modified with disposable recycled poly(lactic acid) (r-PLA) plastic flakes. Biodegradable modified PP fibers containing 30% r-PLA were prepared by melt spinning process and evaluated with different methods of biodegradation assays.

11p tudichquannguyet 29-11-2021 5 1   Download

Some soils are easy to tilth while others not, some hold high amount of water but is not made available to plants, other holds moderate amount of water but is readily made available to plants.

8p trinhthamhodang11 27-04-2021 17 2   Download

A pot experiment was conducted during kharif season of 2016-17 and 2017-18 in completely randomized design with two lime levels (0 and ¼ lime of LR), four phosphorus levels (0, 13.4, 26.8 and 40.2 mg P2O5 kg-1 ) and three boron levels (0, 0.45 and 0.90 mg B kg-1 ) to study the treatment effect on nutrient content and uptake of maize and soil properties. It was observed that lime had a significant effect on biomass yield, nutrient content and uptake of maize.

11p caygaocaolon11 21-04-2021 15 1   Download

A field experiment was conducted on a silty clay loam soil (acidic in reaction and medium in available NPK) during Rabi 2018-19 at Palampur to study the influence of nutrient management practices (Inorganic (RDF), Organic, Natural and Integrated) and varieties (‘Him Palam Alsi-2’, ‘Himani’ and ‘Priyam’) on yield, uptake, quality and soil properties in linseed. Results, revealed that among different nutrient management practices, Integrated Nutrient Management being at par with inorganic practice resulted in significantly higher seed, straw, uptake of NPK and oil yield.

6p caygaocaolon11 21-04-2021 17 1   Download

The field experiment was conducted the year 2014-2015 on the old long-term fertilizer experiment started since 1983 to assess characterization of humus in soil and it’s relation with physical and physic-chemical properties of soil under the long – term effect of integrated nutrient management in sorghum wheat cropping system. The study showed that there was fraction of humus tended to decrease with depth and use of organics like subabul and FYM in conjunction with NPK fertilizers exerted a remarkable impact on the distribution and built up of humus fractions in soil.

8p chauchaungayxua10 18-03-2021 16 2   Download

Physico- chemical properties of soil have profound influence on soil enzyme acid phosphatases activity. To study the distribution of soil enzyme acid phosphatase and influence of physico- chemical properties on soil enzyme acid phosphatases activity forty soil samples were collected from different villages of Ranga Reddy district of Telangana state. These samples were analysed for the physicochemical properties like pH, EC, available nutrients, texture and organic carbon and soil enzyme activity was assayed.

8p cothumenhmong9 04-01-2021 14 2   Download

Long term field experiment on rice commenced in kharif 2006 at Instructionalcum-Research (ICR) farm of the Assam Agricultural University, Jorhat with integrated nutrient management (INM) treatments for assessing its impact on soil properties and microbial activities in acidic soils.

7p caygaocaolon8 07-11-2020 13 2   Download

Hence in this study an effort is made to isolate indigenous acetic acid bacteria of Western Ghats to determine its properties. The identification of the bacteria was carried out by 16s rRNA analysis technique.

11p angicungduoc8 07-11-2020 5 1   Download

Fourteen castor genotypes including two checks GC 3 and GCH 7 were grown in irrigated condition with recommended agronomic practices. The seeds were harvested at stage of their physiological maturity. The soil properties, seed quality parameters, fatty acid profile, ricinoleic acid were analysed as per standard methods.

7p nguathienthan8 20-10-2020 7 1   Download

Field experiment was conducted at Krishi Vigyan Kendra- Senapati, Manipur for two consecutive kharif seasons of years 2014 and 2015 to find out most efficient and economic combination of different organic and inorganic sources of nutrients to increase the productivity of maize (Zea mays L.) without deteriorating the soil qualities. Application of 100% NPK recommended dose of fertilizers in combination with biofertilizers (Azotobacter) and incorporation of vermicompost @5 t/ha improved soil physicochemical properties (viz. decrease in acidic pH).

6p chauchaungayxua8 03-10-2020 16 2   Download

The surface (0-15 cm) soil samples were used for analyzing the soil properties. The soil properties were determined using soil analytical methods given by Jackson (1973). Organic carbon content determined by wet digestion method of Walkley and Black, available nitrogen (N) by Kjeldahl’s method, available phosphorous (P) by Bray and Kurtz method and available potassium (K) by flame photometric method. The data collected on various parameters have been statistically analysed as per the method of Panse and Sukhatme (1978).

4p kethamoi7 26-08-2020 13 1   Download

Nine typical pedons representing major quartzite-schistose landscape in tropical ecosystem of Goa viz., high hills, restricted summits, low hills, inter-hilly valley and narrow valley under varying land use were studied for their morphological characteristics, physical and chemical properties, soil genesis and taxonomy. The soils were slightly to moderately acidic in reaction, very shallow to very deep. Texture of the soils varied from gravelly sandy clay loam to gravelly clay on the hills and sandy clay loam to clay in valley soils.

14p nguaconbaynhay7 15-08-2020 12 1   Download

An Investigation on physico-chemical properties, NPK and micro nutrient status of soils of Janpad major, Left bank canal, Nagarjuna Sagar Project (NSP), Telangana, India was carried. The soils are having clay content ranging from 6 to 24 per cent, silt content from 4 to 20 per cent and sand content from 69 to 87 per cent. The Hydraulic conductivity varied from 15 to 20 cm day-1 with a mean value of 17.5 cm day-1 . Mostly the soils under the command area are slightly acidic to slightly alkaline and non-saline in nature.

9p angicungduoc6 22-07-2020 9 1   Download

Three pot experiments were conducted during three successive seasons (winter 2010/2011, summer season 2011 and winter 2011/2012) in the screen house of Agricultural Experimental Farm of Department of Soils and Water, Faculty of Agricultural, South Valley University, Qena governorate, Egypt to investigate the effects of successive seasonal applications of two organic amendments (filter mud cake FYM and farmyard manure FYM) at a level of 10 ton/fed, in a combination with adding acid producing bacteria (APB) and molasses on sandy soil properties and NPK, availability, as well as growth and NPK...

20p kethamoi6 29-06-2020 13 1   Download

The role of humic acid for enhancing biofertilization performance was studied on production potential of cabbage in alluvium soil. Application of Pseudomonas fluorescens (P. fluorescens) in combination with humic acid was evaluated. The results indicated that the P. fluorescens and humic acid both are significantly influenced the productivity of cabbage and physicochemical properties of soil.

9p chauchaungayxua6 26-06-2020 7 0   Download

The nano-lime and nano-dolomite had the surface areas of 1000 and 900 m2 g -1 , respectively, which are nearly 10 times higher than their respective conventional counter parts. Nano-liming is more effective due to the extensive surface areas of these materials that had increased by ten times which correspondingly increased the exchange properties. As a result of eluviations of acidity producing cations, the Ca and Mg added through the liming materials got adsorbed that closely coincided with a set of favourable changes in soil properties.

7p chauchaungayxua6 26-06-2020 12 1   Download