scholarly journals Nutrient status and their relationship with soil properties of dalo (Colocasia esculenta (L.) Schott) growing areas of Rewa district in Fiji

2018 ◽  
Author(s):  
H.K. Sachan ◽  
Deeksha Krishna
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Soil Properties ◽  
Total Nitrogen ◽  
Nutrient Status ◽  
Mean Value ◽  
Colocasia Esculenta ◽  
Available Phosphorus ◽  
Saline Soils ◽  
The Mean

This study was conducted in dalo (Colocasia esculenta (L.) Schott) growing areas of Rewa district in Fiji to know nutrient status and their relationship with soil properties. Representative soil samples were collected to determine soil properties and nutrient status. The soils of the study area were found acidic in nature with the mean pH of 5.6. The electrical conductivity varied from 0.07-0.31 dSm-1with a mean 0.17 dSm-1. Organic carbon varied from 0.30 to 5.5 % with the mean value of 2.1%. Total nitrogen varied from 0.07-0.43 % with a mean of 0.19%. The values of available phosphorus (mg kg-1) varied from 1.0-44.0 mg kg-1 with a mean value 12.9 mg kg-1and that of potassium varied from 27.37-762.45 mg kg-1 with a mean of 169.56 mg kg-1. It was concluded that soils of the dalo growing areas of Rewa district are moderately acidic, having low electrical conductivity and are characterized as non-saline soils. Soils are high in organic carbon, medium in total nitrogen and low in available phosphorus and exchangeable potassium.

scholarly journals Improvement of Tea (Camellia sinensis L.) Soil Properties by Growing Different Green Crops

2015 ◽  
Vol 12 (2) ◽  
pp. 34-38 ◽  
Author(s):  
Ashim Kumar Saha ◽  
Apu Biswas ◽  
Abdul Qayyum Khan ◽  
Md. Mohashin Farazi ◽  
Md. Habibur Rahman
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Total Nitrogen ◽  
Soil Ph ◽  
Nutritional Value ◽  
Soil Health ◽  
Critical Value ◽  
Available Phosphorus ◽  
Organic Carbon Content

Long-term tea cultivation has led to degradation of the soil. Old tea soils require rehabilitation for restoring soil health. Soil rehabilitation by growing different green crops can break the chain of monoculture of tea. An experiment was conducted at The Bangladesh Tea Research Institute (BTRI) Farm during 2008-2011 to find out the efficiency of different green crops on the improvement of soil properties. Four green crops such as Guatemala, Citronella, Mimosa and Calopogonium were grown to develop the nutritional value of the degraded tea soil. Soil samples were collected and analyzed before and at the end of experiment. Soil pH was increased in all four green crops treated plots with the highest increase in Citronella treated plots (from 4.1 to 4.5). Highest content of organic carbon (1.19%) and total nitrogen (0.119%) were found in Mimosa and Calopogonium treated plots, respectively. Concentration of available phosphorus, calcium and magnesium in all green crops treated plots were above the critical values, while available potassium content was above the critical value in Guatemala, Citronella and Mimosa treated plots. Changes in soil pH and available potassium were significant, while changes in organic carbon content, total nitrogen and available calcium were insignificant. Changes in available phosphorus and magnesium were significant. The Agriculturists 2014; 12(2) 34-38

scholarly journals Composting of Calotropis gigantea Leaves In Presence of Sheep Dung

2015 ◽  
Vol 10 (1) ◽  
pp. 281-284 ◽  
Author(s):  
Mayur Shah ◽  
Jaldip Kansara ◽  
Prateek Shilpkar
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Total Nitrogen ◽  
Available Phosphorus ◽  
Calotropis Gigantea ◽  
Almost Everywhere ◽  
Plant Grown ◽  
Economic Use

Calotropis gigantea is a plant grown almost everywhere and has no economic use. Leaves of Calotropis gigantea plants were composted with sheep dung. Composting conditions were maintained and samples were withdrawn at 30, 60 and 90 days of composting and analysed for pH, electrical conductivity, Ca2+, Mg2+, Cl1-, total organic carbon, total nitrogen, available phosphorus and available potassium. Results show that contents of these parameters changes with time and at 90 days nutrient rich compost is obtained with decreased concentration of chloride.

scholarly journals Preliminary Results of Effect of Rotational Grazing of Farmed Red Deer (Cervus elaphus) on the Biochemical Status of Soil

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 558
Author(s):  
Barbara Futa ◽  
Katarzyna Tajchman ◽  
Żaneta Steiner-Bogdaszewska ◽  
Leszek Drozd ◽  
Tomasz M. Gruszecki
Keyword(s):  
Organic Carbon ◽  
Total Nitrogen ◽  
Cervus Elaphus ◽  
Biochemical Properties ◽  
Available Phosphorus ◽  
Rotational Grazing ◽  
Biochemical Status ◽  
The Mean ◽  
Positive Effect ◽  
Present Pilot Study

The aim of the study was to identify the trends and dynamics of changes in the chemical and biochemical properties of soil induced by rotational grazing of farmed deer. Soils pH and the content of mineral nitrogen forms, total nitrogen, and organic carbon were determined in the study and the activity of three soil enzymes. The monitored soils were slightly acidic and neutral, with pH in 1 mol KCldm−3 ranging from 6.37 to 7.03. The contents of content of organic carbon, total nitrogen in the monitored soils were in the range of 9.42–19.37 gkg−1 and 1.13–2.24 gkg−1, respectively, while the contents of N-NH4+ and N-NO3− of 1.34–7.08 mgkg−1 and 102.8–619.5 mgkg−1, respectively. The mean levels of nitrate nitrogen in the pasture soils were lower than that in the mown soil. The soils from the pastures were characterized by a higher level of available phosphorus, potassium, and magnesium forms than the mown soil. In the deer grazing areas, the activity of all enzymes was clearly higher than in the soil from the control plot. The results of the present pilot study have demonstrated a positive effect of cervid grazing on the biochemical parameters of the soil environment.

scholarly journals Effect of Herbicides Application on Soil Physico-chemical Properties and Performance of Maize in Sudan Savanna Zone of Nigeria

2020 ◽  
pp. 47-58
Author(s):  
G. Omar ◽  
B. Tasi’u
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Total Nitrogen ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Soil Reaction ◽  
Available Phosphorus ◽  
Combined Application ◽  
Physico Chemical ◽  
Sudan Savanna

A multi-locational field trial was conducted at two locations (Orchard of the Bayero University Gezawa village in Gezawa Local Government area) in the Sudan savanna zone of Nigeria to investigate the effect of applications of paraquat and atrazine herbicides on soil physico-chemical properties and maize performance. Pre-planting and plot-by-plot soil samples was taken 24 hours after herbicides application, vegetative growth period, reproductive stage and at harvest were taken and subjected to routine analyses using standard laboratory methods. Crop growth and yield characters were measured using standard methods. The experiment consisted of 7 treatments laid out in a randomized complete block design replicated 3 times. Results indicated highly significant differences between the locations in the content of the sand, silt and clay separates but no significant differences were observed between the treatments. There were highly significant variations in soil reaction, electrical conductivity, organic carbon, total nitrogen, available phosphorus and all the exchangeable bases, except calcium at both locations. Soil reaction, electrical conductivity, organic carbon, total nitrogen, available phosphorus, calcium, magnesium, potassium, sodium and cation exchange capacity showed no significant differences with all the treatments across the locations. Electrical conductivity, organic carbon, total nitrogen, available phosphorus and sodium were low across the locations but were higher at Bayero University Kano. The soils at both locations were generally acid. Thus, the soils at both locations were non-saline and non-sodic. Only the yield varied with the treatments. The highest yield was obtained at Bayero University Kano. Application of the highest treatment (4 kg/ha Atrazine + 4 kg/ha Paraquat was associated with high sand content and strong soil acidity). Combined application of 3 kg/ha Atrazine + 3 kg/a Paraquat was associated with low total nitrogen and exchangeable potassium and with the highest yield of maize. Application of Atrazine at 3 kg/ha corresponded with low organic carbon and low leaf area. Paraquat applied at 4 kg/ha was associated with very low concentration of exchangeable Na and moderate concentration of available P. Combined application of paraquat at 4 kg/ha was associated with low cation exchange capacity. Combined application of 3 kg/ha atrazine and 3 kg/ha paraquat is recommended for higher maize yield. Integrated soil fertility management is recommended in the study areas.

scholarly journals Tillage in Relation to Distribution of Nutrients and Organic Carbon in the Soil

2011 ◽  
Vol 57 (1) ◽  
pp. 21-30
Author(s):  
Božena Šoltysová ◽  
Martin Danilovič
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Total Nitrogen ◽  
Spring Barley ◽  
Conventional Tillage ◽  
Soil Tillage ◽  
Reduced Tillage ◽  
Available Phosphorus ◽  
No Tillage ◽  
The Difference

Tillage in Relation to Distribution of Nutrients and Organic Carbon in the SoilChanges of total nitrogen, available phosphorus, available potassium and soil organic carbon were observed on gleyic Fluvisols (locality Milhostov) at the following crops: grain maize (2005), spring barley (2006), winter wheat (2007), soya (2008), grain maize (2009). The experiment was realized at three soil tillage technologies: conventional tillage, reduced tillage and no-tillage. Soil samples were collected from three depths (0-0.15 m; 0.15-0.30 m; 0.30-0.45 m). The ratio of soil organic carbon to total nitrogen was also calculated.Soil tillage affects significantly the content of total nitrogen in soil. The difference between the convetional tillage and soil protective tillages was significant. The balance showed that the content of total nitrogen decreased at reduced tillage by 5.2 rel.%, at no-tillage by 5.1 rel.% and at conventional tillage by 0.7 rel.%.Similarly, the content of organic matter in the soil was significantly affected by soil tillage. The content of soil organic carbon found at the end of the research period was lower by 4.1 rel.% at reduced tillage, by 4.8 rel.% at no-tillage and by 4.9 rel.% at conventional tillage compared with initial stage. The difference between the convetional tillage and soil protective tillages was significant.Less significant relationship was found between the soil tillage and the content of available phosphorus. The balance showed that the content of available phosphorus was increased at reduced tillage (by 4.1 rel.%) and was decreased at no-tillage (by 9.5 rel.%) and at conventional tillage (by 3.3 rel.%).Tillage did not significantly affect the content of available potassium in the soil.

scholarly journals Nutrient status of rangeland in upper Mustang

2015 ◽  
Vol 24 (1) ◽  
pp. 41-46
Author(s):  
M. Maharjan ◽  
K. D. Awasthi ◽  
K. R. Pande ◽  
N. Thapa
Keyword(s):  
Total Nitrogen ◽  
Soil Depth ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Available Phosphorus ◽  
Top Soil ◽  
Palatable Species ◽  
North And South ◽  
Nitrogen Phosphorus ◽  
Livestock Rearing

The study aimed at assessing the nutrient status of rangeland in upper Mustang. The assessment is necessary to know about the soil quality or productivity of soil of rangeland. Livestock rearing is one of the main occupations in upper Mustang but nowadays due to lack of palatable species for livestock, people are leaving the occupation which is directly affecting their livelihood status. Therefore this research was carried out to find out if the soil nutrient is the reason behind the lack of availability of palatable species in the rangeland. For soil sampling, north and south aspects were taken. In case of altitude, 3850 m, 3650 m and 3450 m were taken. Soil samples were taken from soil profile up to 60cm depth at interval of 20 cm. Available phosphorus and available potassium were found to be high at north aspect but total nitrogen was found to be high at south aspect. Both total nitrogen and available phosphorus were found to be high at 3650 m. Available potassium was gradually decreased with increasing altitude. Total nitrogen, available potassium and available phosphorus were gradually decreased with increasing soil depth. Nutrient status was high at top soil (0-20 cm).The soil nutrient (Nitrogen, Phosphorus, Potassium) status was found to be good in the study area. Further research on biophysical and ecological aspect of Rangeland in Upper Mustang is necessary to manage it properly.Banko Janakari, Vol. 24, No. 1, PP. 41-46

scholarly journals Mineralization of soil organic nitrogen under waterlogged conditions in relation to other properties of tropical rice soils

Soil Research ◽  
1983 ◽  
Vol 21 (2) ◽  
pp. 133 ◽  
Author(s):  
KL Sahrawat
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Soil Properties ◽  
Total Nitrogen ◽  
Organic Nitrogen ◽  
Wetland Rice ◽  
Organic Carbon Content ◽  
Rice Soils ◽  
Wide Range ◽  
Mineralizable Nitrogen

The mineralizable nitrogen pool in wetland rice soils plays a dominant role in the nitrogen nutrition of rice even in fertilized paddies. There is a lack of information on how different soil properties affect ammonification of organic nitrogen in wetland rice soils. Surface samples of 39 diverse Philippine soils representing a wide range of pH, organic matter and texture were studied to determine the relationships between ammonification of organic nitrogen and soil properties. Simple correlation analysis showed that ammonium production was correlated highly significantly with total nitrogen (r = 0.94**), organic carbon (r = 0.91**) and C/N ratio (r = -0.46**), but it was not significantly correlated with cation exchange capacity, clay or pH. Multiple regression analayses showed that organic matter (organic carbon and total nitrogen) accounted for most of the variation in mineralizable nitrogen. These results suggest that organic carbon content is a good index of mineralizable nitrogen in tropical wetland rice soils.

scholarly journals Variation of soil organic carbon, stable isotopes, and soil quality indicators across an erosion–deposition catena in a historical Spanish olive orchard

SOIL ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 179-194
Author(s):  
José A. Gómez ◽  
Gema Guzmán ◽  
Arsenio Toloza ◽  
Christian Resch ◽  
Roberto García-Ruíz ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Properties ◽  
Soil Quality ◽  
Available Phosphorus ◽  
Δ13c And Δ15n ◽  
Olive Orchard ◽  
Erosion Area ◽  
Deposition Processes ◽  
Δ15n And Δ13c

Abstract. This study compares the distribution of bulk soil organic carbon (SOC), its fractions (unprotected and physically, chemically, and biochemically protected), available phosphorus (Pavail), organic nitrogen (Norg), and stable isotope (δ15N and δ13C) signatures at four soil depths (0–10, 10–20, 20–30, and 30–40 cm) between a nearby open forest reference area and a historical olive orchard (established in 1856) located in southern Spain. In addition, these soil properties, as well as water stable aggregates (Wsagg), were contrasted at eroding and deposition areas within the olive orchard, previously determined using 137Cs. SOC stock in the olive orchard (about 40 t C ha−1) was only 25 % of that in the forested area (about 160 t C ha−1) in the upper 40 cm of soil, and the reduction was especially severe in the unprotected organic carbon. The reference and the orchard soils also showed significant differences in the δ13C and δ15N signals, likely due to the different vegetation composition and N dynamics in both areas. Soil properties along a catena, from erosion to deposition areas within the old olive orchard, showed large differences. Soil Corg, Pavail and Norg content, and δ15N at the deposition were significantly higher than those of the erosion area, defining two distinct areas with a different soil quality status. These overall results indicate that the proper understanding of Corg content and soil quality in olive orchards requires the consideration of the spatial variability induced by erosion–deposition processes for a convenient appraisal at the farm scale.

scholarly journals Alteration of carbon, nitrogen, and phosphorus stoichiometry and their related enzymes as affected by increased soil coarseness

2016 ◽  
Author(s):  
Ruzhen Wang ◽  
Linyou Lü ◽  
Courtney A. Creamer ◽  
Heyong Liu ◽  
Xue Feng ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Total Nitrogen ◽  
Enzyme Activities ◽  
Microbial Biomass Carbon ◽  
Soil Parameters ◽  
Available Phosphorus ◽  
Carbon And Nitrogen ◽  
Acid Phosphomonoesterase

Abstract. Soil coarseness decreases ecosystem productivity, ecosystem carbon and nitrogen stocks, and soil nutrient contents in sandy grasslands. To gain insight into changes in soil carbon and nitrogen pools, microbial biomass, and enzyme activities in response to soil coarseness, a field experiment of sand addition was conducted to coarsen soil with different intensities: 0 % sand addition, 10 %, 30 %, 50 %, and 70 %. Soil organic carbon and total nitrogen decreased with the intensification of soil coarseness across three depths (0–10 cm, 10–20 cm, and 20–40 cm) by up to 43.9 % and 53.7 %, respectively. At 0–10 cm, soil microbial biomass carbon (MBC) and nitrogen (MBN) declined with soil coarseness by up to 44.1 % and 51.9 %, respectively, while microbial biomass phosphorus (MBP) increased by as much as 73.9 %. Soil coarseness significantly decreased the activities of β-glucosidase, N-acetyl-glucosaminidase, and acid phosphomonoesterase by 20.2 %–57.5 %, 24.5 %–53.0 %, and 22.2 %–88.7 %, respectively. Soil coarseness enhanced microbial C and N limitation relative to P, indicated by the ratios of β-glucosidase and N-acetyl-glucosaminidase to acid phosphomonoesterase (and MBC:MBP and MBN:MBP ratios). As compared to laboratory measurement, values of soil parameters from theoretical sand dilution was significantly lower for soil organic carbon, total nitrogen, dissolved organic carbon, total dissolved nitrogen, available phosphorus, MBC, MBN, and MBP. Phosphorus immobilization in microbial biomass might aggravate plant P limitation in nutrient-poor grassland ecosystems as affected by soil coarseness. We conclude that microbial C:N:P and enzyme activities might be good indicators for nutrient limitation of microorganisms and plants.

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