scholarly journals Physical and Chemical Properties of Cultivated Peat Soils in Four Trial Sites of ICCTF in Kalimantan and Sumatra, Indonesia

2015 ◽  
Vol 19 (3) ◽  
pp. 131 ◽  
Author(s):  
. Hikmatullah ◽  
. Sukarman
Keyword(s):  
Greenhouse Gas ◽  
Carbon Stock ◽  
Greenhouse Gas Emission ◽  
Chemical Properties ◽  
Organic Carbon Content ◽  
Physical And Chemical Properties ◽  
Gas Emission ◽  
Peat Soils ◽  
Physical And Chemical ◽  
And Chemical Properties

The large distribution of peat soils in Indonesia have important role in carbon stock and greenhouse gas emission which contribute to global warming issue. The objective of this study was to characterize physical and chemical properties of cultivated peat soils in four trial sites of Indonesia Climate Change Trust Fund (ICCTF) in Central Kalimantan, South Kalimantan, Riau and Jambi Provinces to provide a baseline data by a greenhouse gas emission study. Detailed soil observations were conducted using grid system with spacing of 25 × 50 m. A total of 16 representative peat soil profiles consisting of 74 soil samples of horizons were selected for laboratory analyses. The results showed that peat maturity varied from hemic to sapric in the surface layers and hemic in the subsurface layers, except in Site-2 that was fibric. The peat thickness ranged respectively from 5.4 to 7.0 m in Site-1 and Site-3, and from 0.5 to 2.5 m in site-2 and site-4, and all overlying fine-textured mineral soil (substratum). Depth of water table varied from 10 to 30 cm in Site-2 and Site-4, and from 30 to 70 cm in Site-1 and Site-3. Fiber content ranged from 13 to 57% and increased with depth indicating the peat was less decomposed. The bulk density was very low (0.07-0.24 g cm-3) and negatively correlated to fiber content (r = 0.74 for Kalimantan and r = 0.66 for Sumatra). The ash content was low (0.1-8.5%) and negatively correlated to organic carbon content (r = 0.89 for Kalimantan and r = 0.65 for Sumatra). Soil CEC was high and positively correlated to organic carbon content (r = 0.86 for Kalimantan and r = 0.93 for Sumatra). These soils showed very acid reaction (pH 3.3-4.7), low content of exchangeable bases and total P2O5 and K2O (HCl 25%). Based on these properties, the peat soils were grouped as oligotrophic ombrogenous peat. The estimated carbon stock for all the trial sites with total extent of 22.58 ha was 57,282 Mg C. The variation of thickness, maturity, and water table depth will imply to the magnitude of carbon reserves and greenhouse gas emissions. [How to Cite: Hikmatullah and Sukarman. 2014. Physical and Chemical Properties of Cultivated Peat Soils in Four Trial Sites of ICCTF in Kalimantan and Sumatra, Indonesia. J Trop Soils 19: 131-141. Doi: 10.5400/jts.2014.19.3.131]

scholarly journals Effect of zinc nutrition on yield of rice-wheat cropping system and soil properties

2021 ◽  
Vol 8 (01) ◽  
Author(s):  
PEPAKAYALA VARALAKSHMI ◽  
POLAGANI NAGARJUNA ◽  
MOHAN BABU Y. N. ◽  
ADI LAKSHMI G. ◽  
ARADHNA KUMARI ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Aggregate Stability ◽  
Cropping System ◽  
Wheat Crop ◽  
Organic Carbon Content ◽  
Physical And Chemical Properties ◽  
Application Rates ◽  
Physical And Chemical ◽  
Zinc Application ◽  
And Chemical Properties

A study was conducted in an ongoing experiment under AICRP on micronutrients at nursery jhilli of RPCAU, research farm. The experiment consisted of thirteen treatments, of which twelve combinations were of four doses of zinc (Zn) (2.5, 5.0, 7.5 and 10 kg ha-1), three frequencies (only once, alternate year and every year) of application along with control with the no-zinc application. Rice and wheat crops were grown in succession with the recommended dosages of fertiliser viz. 120:60:40 of N: P2O5: K2O applied as Urea, DAP, and Potash, respectively. Surface soil samples (0-15 cm) were collected after the harvest of the wheat crop in the year 2018, i.e. after completion of six years of the experiment, and analysed for soil physical and chemical properties. The availability of nitrogen, sulphur, organic carbon content and aggregate stability increased, and the bulk density, phosphorous availability decreased with increasing doses and zinc application rates. No effect on soil availability of potassium, pH and EC. The treatment T7 i.e., application of zinc @ 7.5 kg Zn ha-1 in alternate year application was the best treatment with regards to yield of rice-wheat cropping (982.9 q ha-1) and also for good physical and chemical properties of the soil.

scholarly journals Characterization and classification of soils of Northern hills Zone of Chhattisgarh, Madhya Pradesh

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 147-149
Author(s):  
P.N. Tripathi ◽  
U.S. Mishra ◽  
Pawan Sirothia ◽  
R.P. Singh
Keyword(s):  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Clay Content ◽  
Exchange Capacity ◽  
Organic Carbon Content ◽  
Physical And Chemical Properties ◽  
Clay Loam ◽  
Physical And Chemical ◽  
And Chemical Properties

Three representative soil pedonsof northern hills of Chhattisgarh, M.P were morphologically studied, characterized and classified. The soils are very deep, colour ranges from brown (10YR5/3) to dark brown (10YR3/3) and very dark greyish brown (10YR3/2) in different horizons. Fe and calcretes are observed in sub surface horizons. The texture in surface soils varied from clay loam to clay while in pedon 2, the texture was observed sandy clay loam throughout the profile. The soils are calcareous and pH ranged from 7.0 to 7.5. The organic carbon content in these soils were (4.4 g kg-1), low to medium (6.1 g kg-1) in surface and decreased with depth. Cation exchange capacity (CEC) were found high in horizons where clay content was more. Based on morphological, physical and chemical properties P1 and P3 were classified as VerticHaplustalfs and pedon (P2) was placed under Typic Haplustepts.

scholarly journals Effects of Rainfall on the Characteristics of Soil Greenhouse Gas Emissions in the Wetland of Qinghai Lake

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 129
Author(s):  
Ziwei Yang ◽  
Kelong Chen ◽  
Fumei Liu ◽  
Zihan Che
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Chemical Properties ◽  
Co2 Flux ◽  
Growing Season ◽  
Physical And Chemical Properties ◽  
Emission Flux ◽  
Gas Emissions ◽  
Physical And Chemical ◽  
And Chemical Properties

Niaodao, a lakeside wetland, was used as the focus of this study to investigate the effect of rainfall changes on the greenhouse gas fluxes of wetland ecosystems. Wetland plots with different moisture characteristics (+25%, −25%, +75%, and −75% rainfall treatments and the control treatment (CK)) were constructed to observe in situ field greenhouse gas emissions at 11:00 and 15:00 (when the daily mean values were similar) in the growing season from May to August 2020 by static chamber–gas chromatography and to investigate the responses of wetland greenhouse gases to different rainfall treatments. The results showed the following: (1) The carbon dioxide (CO2) flux ranged from −49.409 to 374.548 mg·m−2·h−1. The mean CO2 emission flux was greater at 11:00 than at 15:00, and the +25% and +75% treatments exhibited substantially higher CO2 emissions. In addition, the CO2 flux showed a small peak at the beginning of the growing season when the temperature first started to rise. All treatments showed the effect of the CO2 source, and their effects were significantly different. (2) The methane (CH4) flux ranged from −213.839 to 330.976 µg·m−2·h−1 and exhibited an absorption state at 11:00 and an emission state at 15:00. The CH4 emission flux in August (the peak growing season) differed greatly between treatments and was significantly negatively correlated with the rainfall amount (p < 0.05). (3) The nitrous oxide (N2O) flux ranged from −10.457 to 16.878 µg·m−2·h−1 and exhibited a weak source effect throughout the growing season, but it was not significantly correlated with soil moisture; it was, however, negatively correlated with soil temperature. (4) The different treatments resulted in significant differences in soil physical and chemical properties (electrical conductivity, pH, total soil carbon, and total soil nitrogen). The rainfall enhancement treatments significantly improved soil physical and chemical properties.

scholarly journals Carbon Stock Stratification of Peat Soils in South Kalimantan, Indonesia

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Siti Zakiah ◽  
Muhammad Noor ◽  
Dedi Nursyamsi
Keyword(s):  
Soil Carbon ◽  
Carbon Stock ◽  
Chemical Properties ◽  
Peat Soils ◽  
Total N ◽  
Soil Carbon Stock ◽  
Physical And Chemical ◽  
The Relationship ◽  
Very High ◽  
And Chemical Properties

<p>Carbon stock in peat soils is very high, it is necessary to prudent in its management because peat soils is emitting greenhouse gases such as CO<sub>2</sub> during land clearing due to oxidation of peat layer.  This research was conducted to study soil carbon stock stratification in relation to soil physical and chemical properties. The carbon stock stratification was based on maturity degrees of peat.  The study was conducted in Pulau Damar Village, Hulu Sungai Utara District, South Kalimantan Province on land use rubber.  The location of the study area was determined by using the purposive sampling method.  All data obtained were analyzed by Excel spreadsheets and drawn on a CorelDraw 12. The results showed that the amount of carbon stock was influenced by the maturity degrees of peats, peat sapric degres has higher carbon stock than of hemik and fibric with a ratio of  2.0: 1.5: 1.  The relationship between soil carbon stock with soil physic (Bulk Density, BD) and chemical properties (pH, Eh, Fe, and total-N) were not significantly.</p>

Effect of sugarcane monocropping on soil physical and chemical properties in texturally varied soils

2016 ◽  
Author(s):  
S. Rama Lakshmi ◽  
T. Sreelatha ◽  
K. Veerabhadrarao ◽  
N. Venugopalarao
Keyword(s):  
Sandy Loam ◽  
Chemical Properties ◽  
Nutrient Status ◽  
Organic Carbon Content ◽  
Physical And Chemical Properties ◽  
Clay Loam ◽  
Micronutrient Status ◽  
Soil Fertility Status ◽  
Physical And Chemical ◽  
And Chemical Properties

The present study was formulated to study the effect of sugarcane monocropping on soil physical and chemical properties of different textural classess of popular sugarcane growing areas of Visakhapatnam district of Andhra Pradesh. Results revealed that soil physical properties under monocropping were negatively influenced with increasing frequency of ratooning in all the textural classes. However more influence was observed under clay loam soils compared to sandy loams. The data on soil fertility status in different ratoons indicated that the available macro nutrient status and soil organic carbon content was higher in all the surface soils compared to subsurface soils and it was the highest in clay loam soils followed by red loam and sandy loams soils. With in different textural classes, clay loam soils exhibited the highest micronutrient status followed by red loams and sandy loam soils.

scholarly journals BEBERAPA SIFAT FISIK DAN KIMIA TANAH GAMBUT TERBAKAR DAN TIDAK TERBAKAR DI DESA SUNGAI BESAR KABUPATEN KETAPANG

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
. Mintari ◽  
Dwi Astiani ◽  
Togar Fernando Manurung
Keyword(s):  
Peat Soil ◽  
Chemical Properties ◽  
Survey Method ◽  
Physical And Chemical Properties ◽  
Land Restoration ◽  
Peat Soils ◽  
High Conservation ◽  
Physical And Chemical ◽  
The Impact ◽  
And Chemical Properties

Peatlands is one of the ecosystem types in tropical rainforests. Peatland has very high conservation value and other functions such as the hydrological function carbon stocks, and biodiversity which is important for environmental comfort and animal life. The purpose of this study was to obtain information about the impact of fires on the physical and chemical properties of burning and non burning peat soils. This study carried out a field survey method with deliberate sampling (purposive sampling). The results showed that the physical and chemical properties of peat soil after a fire did not change, namely at soil temperature, air humidity was almost the same while the air temperature, soil moisture, pH, C-organic, depth, C/N (0-20 cm) has increased but not significantly. For the chemical properties of peat soil after fire there is an increase in the value of C-organic, CEC, phosphorus, sulfur,ash content, N-total depth (21-40 cm). this means that after fires the nutrients mostly affect peat soil. From the information on the nature of peat soil obtained in land restoration studies to use qualitative soil after burning.Keywords: Burn, chemical pea soil, Peatlands, Physicalpeat soil.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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