scholarly journals Impact of Wastes on Some Properties of Soil around an Active Dumpsite in Ibadan, Southwestern Nigeria

2021 ◽  
Vol 8 (3) ◽  
pp. 27-40
Author(s):  
Oluwatoyin Opeyemi Akintola ◽  
Gabriel Oladapo Adeyemi ◽  
Oluwayemisi Samuel Olokeogun ◽  
Idayat Adewunmi Bodede

Recently most farmers in developing country like Nigeria has resulted to the use of solid wastes as compost to replenish the deteriorated soils while some are farming on the abandoned waste dumpsite due to their richness in organic matter. This study assessed the soil nutrient and fertility status by investigating the influence of wastes (if any) on physical and chemical properties of soils in and around Lapite dumpsite for environmental sustainability. Ten soil samples each collected from three locations: dumpsite, downslope and upslope sites at depth of 0-20cm were analyzed for soil texture, bulk density, porosity, electrical conductivity, pH, organic carbon, organic matter content (OMC), total nitrogen (TN), available phosphorus (AP), Na, K, Ca, Mg, Fe, Zn, Cu, Pb and Ni. Significant differences were observed on soil physical: moisture content (18.05-38.11 %); Bulk density (1.01-1.54 g/cm3); porosity (49.09-74.56 %) and chemical properties: : OMC (1.39-5.98 %);TN (0.58-1.60 %); AP(0.35-1.09 %) among others in soils from the studied location sites at p ≤ 0.05; however, no remarkable impact was noticed on soil texture. This study has shown that deposition of wastes has impacted the physical and chemical properties by improving soil organic matter contents and increasing nutrient contents such as exchangeable bases and micronutrient, thus enhancing soil organic matter, fertility and productivity status of the soil for maximum plant growth. However, increase in heavy metal concentrations in dumpsite soils call for incessant assessment and monitoring, thus sorting, reuse and recycling should be encouraged to reduce the metal loads over time.

2021 ◽  
Vol 47 (1) ◽  
pp. 82-94
Author(s):  
Mahmoud Shabanpour ◽  
Azadeh Sedaghat ◽  
Parvin Rousta ◽  
Reza Ebrahimi ◽  
Ahmad Shirinfekr

The organic matter content has significantly decreased in some of the tea gardens in north of Iran, thereforeresulting in degradation of their physical and chemical properties. An experiment was conducted in two tea gardens in order to investigate the effect of lime and vermicompost on soil's physical and chemical properties. The studied tea soils were located in Gilan province (Bazkiyagorab and Azbaram) in Iran (with clay loam and sandy loam texture). Vermicompost was applied in 3 levels of 0, 2.5% and 5% and lime was applied in two levels of 0 and 0.5%. The measurements were carried out three times (after 0, 90 and 180 days). The results showed that lime and vermicompost application has significantly affected the calcium carbonate content, pH, the electrical conductivity (EC) and the soil organic matter (SOM) content in the studied soils. Lime application significantly increased the infiltration rate (P<0.01). Comparison of the average interaction of lime with vermicompost in the Azbaram station soil showed that 5% vermicompost and 0.5% lime with an average of 5.49 (mm h-1) had the highest infiltration rate (IR) and had a significant difference with the other treatments. Comparison of the average interaction of lime with vermicompost in Basquegorob garden showed that the treatment of 5% vermicompost with 0.5% lime, the time stage of 180 days with an average density of 1.11 (g cm-3) had the lowest bulk density (BD) and was significantly different from other levels. It seems that the simultaneous presence of lime and vermicompost and their effect on improving the soil structure and increasing porosity, leads to reduction of the soil's bulk density. The results obtained in this study have clearly indicated that the simultaneous applications of vermicompost and lime is an effective way to improve soil physical and chemical properties. However, the real potential of the amendments used in this experiment should be further assessed under field conditions using a test crop.


2013 ◽  
Vol 295-298 ◽  
pp. 2090-2096
Author(s):  
Yi Fang ◽  
Xiao Jia Li ◽  
Cong Cong Chen ◽  
Min Zhang ◽  
Rui Ping Zhou ◽  
...  

Grassland is an important ecosystem in land surface. Soil is the basis of grassland ecosystem, and the changes of its properties directly affect grassland ecosystem. The study region is located in Xilamuren grassland using the methods of field sampling and experimental analysis. It was divided into four test areas according to grazing intensity. Soil physical and chemical properties were analyzed in each test area. The results showed that: the trend of soil water content decreased and then increased with increasing grazing intensity, soil water content in repaired grassland was the lowest. For the soil mechanical composition, particle size content increased first and then decreased with increasing grazing intensity when the particle size was 1-0.05mm. The difference between the highest and lowest values was obvious. When the particle size was 0.05-0.002mm, the trend of particle size fluctuated, first decreased and then increased, finally reduce again and the difference between the highest and lowest values was obvious. When the particle size was less than 0.002mm, the trend of particle size content increased with increasing grazing intensity. In soil chemical properties, soil organic matter appears downward trend overall as grazing intensity increase. Soil organic matter content was the lowest in repaired grass. Available N and P first decreased and then increased with increasing grazing intensity, the minimum values appeared in the repaired grassland and degraded grassland respectively. Available K content increased with increasing grazing intensity.


2020 ◽  
Vol 3 (2) ◽  
pp. 43-50
Author(s):  
Nasrullah Nasrullah ◽  
Syakur Syakur ◽  
Hasanuddin Hasanuddin

Abstrak :Gulma kirinyuh sangat berpotensi untuk dijadikan pupuk organik karena kandungan unsur  hara dalam jaringannya yang tinggi. Biomassa kirinyuh memiliki kandungan hara N 2,65%, P 0,53% dan K 1,9% sehingga dapat dimanfaatkan sebagai sumber hara yang potensial dalam upaya peningkatan produksi kedelai dan perbaikan kesuburan tanah. Penelitian ini bertujuan untuk mengetahui tanah yang sesuai dalam menunjang produksi tanaman kedelai akibat dari penambahan bahan organik kirinyuh. Penelitian ini bertujuan untuk mengetahui tanah yang sesuai dalam menunjang produksi tanaman kedelai akibat dari penambahan bahan organik kirinyuh. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Kelompok (RAK) Faktorial yang terdiri atas 2 (dua) faktor dengan pola 4 x 3 sehingga diperoleh 12 kombinasi perlakuan. Faktor pertama adalah dosis mulsa organik kirinyuh (D), terdiri atas 4 (empat) taraf yaitu: D0 = 0 ton ha-1, D1 = 6 ton ha-1, D2 = 12 ton ha-1, D3 = 18 ton ha-1. Faktor kedua adalah waktu aplikasi mulsa organik kirinyuh (W) terdiri atas 3 (tiga) taraf yaitu saat tanam (W1), 1 minggu setelah tanam (W2), 2 minggu setelah tanam (W3). Peubah fisika dan kimia tanah yang diamati meliputi bulk density, stabilitas agregat tanah, kapasitas tukar kation dan kejenuhan basa.Hasil penelitian menunjukkan bahwa dosis mulsa organik kirinyuh berpengaruh sangat nyata  terhadap sifat fisika tanah yaitu bulk density. Dosis mulsa organik kirinyuh 6 - 18 ton ha-1 menurunkan nilai bulk density namun tidak meningkatkan stabilitas agregat tanah. Waktu aplikasi mulsa organik kirinyuh yang awal tidak menunjukkan pengaruhnya terhadap sifat fisika dan kimia tanah yang diamati. Tidak terdapat interaksi antara dosis dan waktu aplikasi mulsa organik kirinyuh terhadap semua peubah yang diamati.   Granting Kirinyuh (Cromolaena odorata L.) As Organic Mulch In Soybean Plants (Glycine max L.) As Well As Its Effects On The Physical And Chemical Properties Of SoilAbstract. Weed kirinyuh potential to be used as organic fertilizer because the content of nutrient elements in its high. Biomass kirinyuh contain nutrient N 2.65%, 0.53% P and K 1.9% so that it can be utilized as a source of potential nutrient in an attempt to increase the production of soybean and improvement of soil fertility. This research aims to know the appropriate ground support the soybean crop production resulting from the addition of organic matter kirinyuh. This research aims to know the appropriate ground support the soybean crop production resulting from the addition of organic matter kirinyuh. This research was performed using Random Design Group (RAK) Factorial of 2 (two) factors with the 4 x 3 pattern so obtained 12 combination treatment. The first factor is a dose of organic mulch kirinyuh (D), consisting of four (4) levels, namely: a D0 = 0 ton ha-1, D1 = 6 ton ha-1, D2 = 12 ton ha-1, D3 = 18 ton ha-1. The second factor is the time of organic mulch application kirinyuh (W) consists of 3 (three) level that is when planting (W1), 2 weeks after planting (W2), 2 weeks after planting (W3). Soil physical and chemical variables were observed include bulk density, soil aggregate stability, cation exchange capacity and saturation of the base. The results showed that a dose of organic mulch kirinyuh very real effect against soil physical properties namely bulk density. A dose of organic mulch kirinyuh 6-18 ton ha-1 lowers the values of bulk density but does not increase the stability of soil aggregates. Organic mulch application time kirinyuh the beginning does not show its effects on the physical and chemical properties of the soil is observed. There is no interaction between the dose and time of application of organic mulch kirinyuh against all variables were observed. 


Agro-Science ◽  
2021 ◽  
Vol 20 (2) ◽  
pp. 49-56
Author(s):  
A.O. Onunwa ◽  
C.J. Nwaiwu ◽  
J.E. Nwankwor ◽  
C.E. Emeh ◽  
C.O. Madueke ◽  
...  

Effects of four organic amendments on some soil physical and chemical properties were investigated in Awka, Anambra State in southeastern Nigeria. Over the years, use of synthetic materials in crop production has been a common practice globally. The attendant detrimental effects of the chemicals used in the formulation of these synthetics on animal and human health as well as the environment has made researchers to look out for a better agronomic practice that would not only improve productivity but at the same time sustain a healthy environment. Sole maize, sole cowpea and maize-cowpea intercrop (study area conventional practices) were planted using four soil organic amendments viz: cassava peel (CP), poultry manure (PM), pig waste (PW) and rice husk (RH) at the rate of 20 t ha–1 with the fifth as the control. The treatments were laid out in a 3 × 5 factorial in randomized complete block design and replicated four times. Data on the treatments’ effects on the selected soil physical properties (bulk density, total porosity, soil moisture) and chemical properties (soil pH, available phosphorus, cation exchange capacity (CEC), organic carbon, exchangeable bases and exchangeable acidity) were subjected to factorial analysis of variance using GenStat 2006 Edition. Results indicated that for sole maize, the amendments had significant effect onexchangeable Al3+and Na+; organic carbon, soil pH, available phosphorus and CEC but had no significant effect on Ca2+, H+, Mg2+ and K+ as compared to the control. For sole cowpea, compared to the plots with no amendment (control), all the chemical parameters analyzed differed significantly except organic carbon. Whereas, for maize-cowpea intercrop the treatments had no significant effect on Al3+, Na+, K+ and available phosphorus but differed significantly in exchangeable H+, Ca2+, Mg2+, organic carbon, soil pH, and CEC. There was a decrease in bulk density following the amendment. For sole maize, sole cowpea and maizecowpea intercrop; bulk density, total porosity and moisture content of the amended plots were significantly (p< 0.05) influenced. Organic amendments also significantly improved the growth and yield of maize and cowpea in both the sole and intercrop systems. Generally, poultry manure resulted in higher plant height,number of leaves and leaf area for maize; vine length, number of branches for cowpea as compared with other amendments. Hence, poultry manure was the most effective organic amendment in improving the soil physical and chemical properties as well as the growth and yield of cowpea and maize. Key words: Growth, maize-cowpea intercrop, soil physical and chemical properties, soil organic amendments


2021 ◽  
Vol 14 (2) ◽  
pp. 19-30
Author(s):  
Zulfakri Zulfakri ◽  
Yusrizal Yusrizal ◽  
Angga Defrian ◽  
Muhammad Nasir

Abstrak. Penelitian ini dilaksanakan untuk mengetahui perubahan sifat fisika dan kimia tanah pada lahan kering akibat perlakuan bahan organik dan kapur dolomit. Metode yang digunakan adalah rancangan acak kelompok (RAK) faktorial dengan 2 (dua) faktor yang terdiri dari kapur dolomit pada taraf 0 ton/ha, 0,8 ton/ha dan 1,6 ton/ha, dan bahan organik pada taraf 0 ton/ha, 6 ton/ha dan 12 ton/ha dengan 3 (tiga) kali pengulangan. Hasil dari penelitian ini menunjukkan bahwa pada perlakuan bahan organik mampu memperbaiki sifat fisika dan kimia tanah dimana stabilitas agregat, porositas total, C-organik dan pori drainase cepat menjadi meningkat serta mampu menurunkan bulk density dibandingkan dengan tanpa perlakuan bahan organik.CHANGES IN PHYSICAL AND CHEMICAL PROPERTIES OF SOIL ON DRY LAND DUE TO ORGANIC MATERIALS AND DOLOMIT LIMEAbstract. This research was conducted to determine changes in physical and chemical properties of soil on dry land due to the application of organic matter and dolomite lime. This study used  factorial randomized block design (RAK) consisting of 2 (two) factors, namely dolomite lime at levels 0, 0.8 and 1.6 tons/ha, while organic matter at levels 0, 6, and 12 tons/ha. with 3 (three) repetitions. The results showed that the organic matter treatment was able to improve the physical and chemical properties of the soil in which the total porosity, aggregate stability, fast drainage pores and organic C were increased and were able to decrease the bulk density compared to without the addition of organic matter. 


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Siti Latifah ◽  
Ratna Herawatiningsih

Forest harvesting is a logging activity, distribution of trunks, skidding, loading and transportation. This activity involves a lot of heavy equipment that results in soil compaction and reduced vegetation cover. This condition causes changes in soil fertility conditions. This study aims to determine changes in soil fertility that occur due to forest exploitation activities. Namely by observing the physical and chemical properties of the soil in the area of the former skid trail, ex-TPn, former TPk, former logging areas. The research method used for data retrieval is the survey method with porposive sampling, while the data obtained is analyzed using descriptive analysis. Based on the results of the analysis of the physical and chemical properties of the soil, it shows that the former TPN area is the area with the lowest soil fertility value. Former logging areas have the best quality of soil fertility compared to other areas; such as former skid trails, former TPk and former Tpn areas even though they are still included in the low fertility classification, with organic matter in the former logged area of 2.24%. The organic matter content is only 0.8% with clay texture.Keyword: harvesting, forest, forest land, soil fertility


2021 ◽  
Author(s):  
Duo Zhao ◽  
Wei Zhang ◽  
Guinan Shen ◽  
Yuan Yuan ◽  
Yamei Gao ◽  
...  

Abstract Understanding the effects of tillage on the community composition and diversity of bacteria and archaea is useful for the long-term sustainable utilization of black soil. In this study, non-disturbed virgin black soil (NDBS) in the past 60 years, and the adjacent black soil under the arable land farming (DFBS) and paddy rice (PBS) for 3 years were chosen to investigate the microbial characteristics and their relationship with physical and chemical properties. The microbial diversity was investigated using 16S rRNA genes high-throughput sequencing technique and its relationship with soil physic-chemical properties was analyzed by redundancy analysis. The diversity of archaea decreased significantly after arable land farming. After conversion from arable land farming to rice paddy, the diversity of bacteria increased significantly, while the diversity of archaea increased significantly. In DFBS, the available phosphorus increased significantly, yet pH, organic matter and available potassium decreased significantly. However, the pH and available phosphorus increased significantly, organic matter and total nitrogen decreased significantly in PBS. The soil pH had the closest correlation with the microbial diversity. These indicated that tillage disturbance changed the diversity of bacteria and archaea as well as physical and chemical properties in black soil.


2020 ◽  
Vol 7 (2) ◽  
pp. 57-67 ◽  
Author(s):  
Akintola Opeyemi ◽  
Bodede Adewunmi ◽  
Abiola Oluwaseyi

The different features of soil greatly affect the flora and vegetative diversity of a forest. The physical and chemical characteristics of soils in Onigambari Forest Reserve were evaluated to assess the fertility and productivity status of the soils. Fifteen soil samples collected from different sample locations were analyzed for soil texture (sand, silt and clay), bulk density, porosity, pH, organic matter, total nitrogen, available phosphorus, exchangeable bases (Na, K, Ca and Mg) and available micronutrients (Zn, Cu, Fe and Mn). Texturally, the studied soils were loamy sand and sandy loam with percentage of sands (71.2-84.2 %), silts (7.4-10.4 %) and clay (6.4-19.4 %). The bulk density of the soils was 1.61-1.83 % while the porosity of the soils ranged from 35.2-44.1 %. The slightly acidic to neutral soil pH (5.90 - 6.60) and medium organic matter content (1.68 -2.60 %) suggest adequate level of soil nutrients. The soils had high total nitrogen (0.35 -0.65 %) and available phosphorus contents between 10.98 and 18.22mg/kg.


2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Willian Barros Nascimento ◽  
Milton César Costa Campos ◽  
Bruno Campos Mantovanelli ◽  
Luís Antônio Coutrim dos Santos ◽  
José Mauricio Cunha ◽  
...  

The Amazon region has a great diversity of landscapes such as forests galleries, natural fields (“Cerrados Amazônicos”), dense forest, these environments made possible the formation of a broad class of soils over time. The aim of this study was to evaluate the physical and chemical properties of soils in different physiographic environments in southern Amazonas, Brazil. Three areas of representative physiographies were selected, all of them in natural conditions: natural field / forest and floodplain / dry land transitions, and corrugated relief areas. Soil samples were collected in layers of 0.0 to 0.20 and 0.80-1.0 m. From the samples collected the following physical analyzes were performed: particle size, bulk density, particle density, total porosity and saturated hydraulic conductivity; and chemical: exchangeable calcium, magnesium, aluminum and potassium available, phosphorus, potential acidity, pH and organic carbon. Based on the results of chemical analysis were calculated the sum of bases and base saturation. The results were submitted to multivariate statistics analysis, at the discretion of the principal component analysis (PCA). From the results it is clear that different physiographic environments studied influence the formation of different soil classes, featuring the diversity of Amazonian soils. The PCA allowed the distinction and formation of different similarity groups, thus enabling to relate the physical and chemical properties with the physiographic formation in which they are inserted.


Author(s):  
Landing Biaye ◽  
Fary Diome ◽  
Seybatou Diop ◽  
Modou Mbaye ◽  
Djibril Tine ◽  
...  

The locality of Nioro du Rip is facing intense erosion, loss of agricultural land, soil pollution and soil degradation. Today, there is limited information about the soil physical and chemical properties in the locality. In this work, we describe the main essential factors or mechanism that control the evolution of the soil in the study area. The physical and chemical properties of soils encountered along a NE-SW transect in are analyzed in this paper. The statistical analysis results revealed low structural stability of soils in general, due to their low organic matter content and exchangeable bases and their predominantly silty texture. A net trend towards acidification, which is more pronounced in the lower-bottom and terrace soils, provides information on the conditions that are increasingly unfavorable to agricultural development. The multivariate principal component analysis (PCA) identified the preponderance of two factors among the four primarily involved in soil geochemical composition. These include a mineralization process (expressed through the first principal component (PC1), which causes soils to be rich in elements (Ca2+, K+,C, N, MO) controlling their structure and fertility level;  The PC2 axis expresses the spatial differentiation phenomenon of the soil granulometric composition: soils forming cluster poles according to their textural affinity in the projection of the plane formed by these two components , with on one side the sandy-dominated soils of the shallows and terraces and on the other the clay-dominated soils of the plateau and the slope. A clear reversal of textural polarity in the studied topo sequence that must be blamed on the strong water erosion in this area.


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