Soil aggregates

The paper "Aggregate indices method in soil quality evaluation using the relative soil quality index" presents a new approach to assess the soil quality by aggregate indices using the Relative Soil Quality Index (RSQI) proposed by Ho Ngoc Pham. RSQI is integrated from the individual indices into a simple formula for overall assessment of the soil quality. RSQI is different from other approaches.

9p runordie3 27-06-2022 11 3   Download

This study pointed out that growing an intercrop and retaining its residues as in situ mulch between the cotton rows can improve soil condition by increasing soil microstructure, water stable aggregation and infiltration rate, and reducing run-off and soil loss.

5p thebadguys 15-01-2022 11 0   Download

In the study soil surveys conducted and GPS based soil samples were collected from each domain viz., Bhopal, Hoshangabad, Vidisha and Jabalpur of AESR 10.1 region.and for bulk density (BD), total porosity (TP), particle size distribution (Sand, Silt, Clay), analyzed then aggregate stability (AS) and structural stability index (SSI) were estimated in the Department of Soil Science and Agricultural Chemistry Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur during 2018-2020.

28p cothumenhmong11 11-05-2021 13 1   Download

Niche differentiation is a prominent hypothesis explaining the maintenance of tree species diversity in tropical forests (Connell 1978). It suggests that different species are best suited to different habitats in which they are completely dominant and more abundant than in less suitable habitats (Harms et al. 2001). In addition, distribution patterns of tropical trees are generally more clumped or aggregated than random (Condit et al. 2000). Furthermore, environmental heterogeneity (difference in soil, elevation, slope, etc.

10p nguathienthan11 06-04-2021 7 2   Download

The study aims to elucidate the impact of organic inputs on strength and structural stability of aggregates in a sandy loam soil of Indo-Gangetic Plain Zone of India. Tensile strength, friability and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm), small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+ clay size (

36p gaocaolon9 22-12-2020 29 2   Download

Sustainability of the rice–wheat rotation is important to Asia’s food security. Intensive cropping with no return of organic materials results in loss of soil organic matter and is not sustainable.

9p gaocaolon9 22-12-2020 17 1   Download

Soil aggregates and organic matter are considered to be important indicators of soil quality. The objective of this review study was to determine agricultural practices effects on the distribution of soil organic carbon (SOC) associated with aggregate-size fractions. Depth distribution of soil organic carbon (SOC) fractions depends on the efficiency of agro‐ technical managements.

21p trinhthamhodang9 16-12-2020 7 2   Download

In order to assess the effect of balanced and imbalanced use of inorganic fertilizers and FYM in rice-wheat cropping system for twenty-nine years on physical soil quality indices after rice the observations were recorded from the continuing long-term fertility experiment initiated in 1984 at Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar.

8p caygaocaolon8 07-11-2020 7 1   Download

An experiment was carried out under long term trial in randomized block design (RBD) at Indira Gandhi Krishi Vishwavidyalaya, Raipur, India to comprehend the long-term effect of fertilization and algalization on soil aggregation; C and N fractions associated with such aggregates under rice based cropping sequence.

7p angicungduoc8 07-11-2020 14 1   Download

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. The total water stable aggregates (WSA) in the experimental soils ranged from 70.4 to 94.9% under different treatments.

11p angicungduoc8 07-11-2020 14 1   Download

The application of farmyard manure (FYM) in conjunction with inorganic fertilizers significantly increased yield attributes and yield of rice. Application of FYM improved available nutrients, porosity, organic carbon, cation exchange capacity (CEC), and aggregation of soil and reduced bulk density. Inorganic fertilizers in conjunction with FYM improved quality parameters of rice.

14p nguathienthan8 20-10-2020 16 2   Download

The review study assessed that the adoption of CA in rice-wheat system for a few uninterrupted years can substantially improves the organic carbon carbon status, and reduce the sub-surface compaction and the modified soil environment may promote rice-wheat system productivity in directseeded/ unpuddled transplanted rice and notill wheat system, in comparison to a conventional system, where rice was puddletransplanted followed by conventionally tilled wheat.

18p caygaocaolon7 18-09-2020 10 2   Download

Cereals are generally regarded as the “staff of life”. Wheat, rice and maize are the major cereals constituting the staple diet of the majority of the world population among which wheat is counted among the „big three‟ cereal crops. Zero tillage enables farmers to sow wheat in left optimum moisture with good germination capacity and increases soil aggregates due to minimal disturbance of soil structure/texture. The present experiment was conducted during rabi season of 2016-17 at agronomy farm of BAU, Sabour, Bihar.

10p caygaocaolon7 18-09-2020 11 0   Download

The main objective of the present review study was to assess the impact of long-term manure and synthetic fertilization and residue retention on SOC storage, soil aggregation and responses of SOC fractions in the Typic Ustochept soil of Northwest India.

16p nguaconbaynhay7 15-08-2020 14 1   Download

Sowing of wheat in left optimum moisture through zero tillage technology not only provides a good germination but also improves the soil fertility, soil physical properties and saves time hence increases net return on sustained basis. It causes minimal disturbance of soil structure and texture ultimately increases size of soil aggregates. In the present experimental study, genotypes and tillage effect was observed.

9p nguaconbaynhay7 15-08-2020 11 0   Download

Attachment of soil bacteria to plant cells is supposedly the very early step required in plant–microbe interactions. Attachment also is an initial step for the formation of microbial biofilms on plant roots. For the rhizobia–legume symbiosis, various mechanisms and diverse surface molecules of both partners have been proposed to mediate in this process. A biofilm is an aggregate of microorganisms in which cells are stuck to each other and/or to biotic/abiotic surface.

11p angicungduoc6 20-07-2020 16 1   Download

A Field experiment was conducted in a fine loamy mixed Hyperthermic Typic Haplustept soil to study the effect of fly ash and FYM on yield of rice and on cracking pattern of soil. The grain and straw yield of rice was significantly increased with fly ash, FYM and their interactions.

9p nguaconbaynhay6 24-06-2020 7 1   Download

The present study evaluated the effects of long-term tillage operation on soil physical properties and nutrient dynamics on surface soil. The soil samples were collected at 0 to 15cm soil depth profiles in the year of 2016 and 2017 from following treatment (T1) Conventional tillage, (T2) Conventional tillage with seeding by bullock drawn, (T3) Zero till seeding with bullock drawn, (T4) Conservation tillage seeding with country plough and (T5) Utera cropping (T5).

8p nguaconbaynhay6 23-06-2020 17 1   Download

The average concentration of particulate organic carbon (POC), dissolved organic carbon (DOC) and microbial biomass carbon (MBC) in organic manure plus inorganic fertilizer treatments (NP+S and NP+FYM) in 0–60 cm depth were increased by 64.9–91.9%, 42.5–56.9%, and 74.7–99.4%, respectively, over the CK treatment. Accumulation of crop residues and organic matter in the surface layer under conservation tillage creates favourable feeding conditions and also provides physical protection to various soil organisms, thereby increasing their abundance as well as diversity.

27p gaocaolon5 14-06-2020 21 3   Download

Soil organic carbon (SOC) and its fractions (labile and non-labile) including particulate organic carbon (POC) and its components [coarse POC and fine POC], light fraction organic carbon (LFOC), readily oxidizable organic carbon, dissolved organic carbon (DOC) are important for sustainability of any agricultural production system as they govern most of the soil properties, and hence soil quality and health.

28p gaocaolon5 14-06-2020 20 2   Download