scholarly journals Perbaikan Sifat Fisik Tanah Inceptisol dan Pertumbuhan Tanaman Jagung (Zea mays L.) akibat Pemberian Kompos Granul Ela Sagu dan Pupuk Fosfat

2021 ◽  
Vol 2 (1) ◽  
pp. 236-252
Author(s):  
Maimuna La Habi ◽  
Aminudin Umasangaji
Keyword(s):  
Zea Mays ◽  
Bulk Density ◽  
Zea Mays L ◽  
Particle Density ◽  
Soil Bulk Density ◽  
Soil Porosity ◽  
Soil P ◽  
Available Water ◽  
Total Soil

Percobaan pot di rumah kaca dirancang untuk mengetahui pengaruh kompos granular limbah empulur sagu dan pupuk fosfat terhadap peningkatan karakteristik fisik Inceptisols dan pertumbuhan jagung. Percobaan menggunakan Rancangan Acak Lengkap faktorial 3 x 3 dengan 3 ulangan. Faktor pertama adalah KGES 0 (tanpa kompos granul ampas sagu), KGES 1 (100 g.pot-1), dan KGES 2 (200 g.pot-1) berupa kompos granul limbah empulur sagu; faktor kedua adalah pupuk P0 (tanpa fosfat), P1 (0,326 g.pot-1) dan P2 (0,652 g.pot-1). Hasil percobaan menunjukkan bahwa pemberian kompos granular limbah empulur sagu dan pupuk fosfor berpengaruh nyata terhadap soil bulk density, particle density, soil porosity, fast drainage pores, slow drainage pores, available water pores, unavailable water pores, total soil-P, dan tinggi tanaman. Sedangkan pupuk fosfor tidak berpengaruh nyata terhadap soil bulk density, porosity, slow drainage pores, unavailable water pores, dan tinggi tanaman.

INFLUENCE OF HERBICIDE USE AND INTER-ROW TILLAGE ON CORN YIELDS AND SOIL CONDITIONS

1984 ◽  
Vol 64 (2) ◽  
pp. 405-409 ◽  
Author(s):  
D. R. COOTE ◽  
W. J. SAIDAK
Keyword(s):  
Zea Mays ◽  
Bulk Density ◽  
Soil Structure ◽  
Zea Mays L ◽  
Soil Bulk Density ◽  
Soil Conditions ◽  
Grain Yields ◽  
Tillage Operation ◽  
Hand Weeding ◽  
Herbicide Use

Six herbicide treatments and hand weeding of grain corn (Zea mays L.) were compared with and without a single inter-row tillage operation in June. Grain yields were significantly increased by tillage and negatively correlated with weed weights. In a subset of plots, surface soil bulk density was lower, and air-filled porosity was higher after the tillage. Bulk densities were decreased in September by a possible interaction between inter-row tillage and herbicide use. Grain yields were negatively correlated with bulk density in June and positively correlated with soil moisture in September, suggesting that some of the yield improvement from tillage was the result of better soil physical conditions.Key words: Zea mays L., atrazine, herbicides, tillage, soil structure, bulk density

scholarly journals Effect of microbial UGmax enricher on soil physical and water retention properties

2018 ◽  
Vol 69 (4) ◽  
pp. 243-250
Author(s):  
Mirosław Orzechowski ◽  
Jacek Długosz ◽  
Sławomir Smólczyński ◽  
Barbara Kalisz ◽  
Paweł Sowiński ◽  
...  
Keyword(s):  
Bulk Density ◽  
Water Retention ◽  
Particle Density ◽  
Soil Bulk Density ◽  
Temperate Climate ◽  
Water Capacity ◽  
Available Water ◽  
Available Water Capacity ◽  
Water Retention Properties ◽  
The Impact

Abstract The paper presents the impact of UGmax enricher on soil physical and water retention properties. The experiment was established in 2005 in a 2 ha field 9 km from Lidzbark Warmiński in the village of Budniki. The studied soils were classified as Cambisols and Luvisols (IUSS Working Group WRB 2015), and they were formed from glaciolimnic deposits. Soil bulk density, soil particle density, texture, total porosity and water retention properties using low and high-pressure chambers were determined. The use of UGmax enricher on loamy soils used as arable lands in temperate climate of north-eastern Poland caused significant decrease of soil bulk density, increase of available water capacity and readily available water capacity. Statistically significant differences between examined soil properties were observed in most studied years.

scholarly journals Gamma-Ray Attenuation to Evaluate Soil Porosity: An Analysis of Methods

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Luiz F. Pires ◽  
André B. Pereira
Keyword(s):  
Gamma Ray ◽  
Particle Density ◽  
Pore Space ◽  
Physical Property ◽  
Soil Bulk Density ◽  
Soil Porosity ◽  
Porous System ◽  
Soil Pore Space ◽  
Gamma Ray Attenuation ◽  
Dry Soil

Soil porosity (ϕ) is of a great deal for environmental studies due to the fact that water infiltrates and suffers redistribution in the soil pore space. Many physical and biochemical processes related to environmental quality occur in the soil porous system. Representative determinations ofϕare necessary due to the importance of this physical property in several fields of natural sciences. In the current work, two methods to evaluateϕwere analyzed by means of gamma-ray attenuation technique. The first method uses the soil attenuation approach through dry soil and saturated samples, whereas the second one utilizes the same approach but taking into account dry soil samples to assess soil bulk density and soil particle density to determineϕ. The results obtained point out a good correlation between both methods. However, whenϕis obtained through soil water content at saturation and a 4 mm collimator is used to collimate the gamma-ray beam the first method also shows good correlations with the traditional one.

scholarly journals Tillage and crop rotation effects on soil carbon and selected soil physical properties in a Haplic Cambisol in Eastern Cape, South Africa

2019 ◽  
Vol 15 (No. 1) ◽  
pp. 47-54 ◽  
Author(s):  
Mxolisi Mtyobile ◽  
Lindah Muzangwa ◽  
Pearson Nyari Stephano Mnkeni
Keyword(s):  
South Africa ◽  
Water Content ◽  
Bulk Density ◽  
Soil Water ◽  
Soil Water Content ◽  
Crop Rotation ◽  
Soil Bulk Density ◽  
Crop Rotations ◽  
Soil Porosity ◽  
No Till

The effects of tillage and crop rotation on the soil carbon, the soil bulk density, the porosity and the soil water content were evaluated during the 6<sup>th</sup> season of an on-going field trial at the University of Fort Hare Farm (UFH), South Africa. Two tillage systems; conventional tillage (CT) and no-till and crop rotations; maize (Zea mays L.)-fallow-maize (MFM), maize-fallow-soybean (Glycine max L.) (MFS); maize-wheat (Triticum aestivum L.)-maize (MWM) and  maize-wheat-soybean (MWS) were evaluated. The field experiment was a 2 × 4 factorial, laid out in a randomised complete design. The crop residues were retained for the no-till plots and incorporated for the CT plots, after each cropping season. No significant effects (P &gt; 0.05) of the tillage and crop rotation on the bulk density were observed. However, the values ranged from 1.32 to1.37 g/cm<sup>3</sup>. Significant interaction effects of the tillage and crop rotation were observed on the soil porosity (P &lt; 0.01) and the soil water content (P &lt; 0.05). The porosity for the MFM and the MWS, was higher under the CT whereas for the MWM and the MWS, it was higher under the no-till. However, the greatest porosity was under the MWS. Whilst the no-till significantly increased (P &lt; 0.05) the soil water content compared to the CT; the greatest soil water content was observed when the no-till was combined with the MWM rotations. The soil organic carbon (SOC) was increased more (P &lt; 0.05) by the no-till than the CT, and the MFM consistently had the least SOC compared with the rest of the crop rotations, at all the sampling depths (0–5, 5–10 and 10–20 cm). The soil bulk density negatively correlated with the soil porosity and the soil water content, whereas the porosity positively correlated with the soil water content. The study concluded that the crop rotations, the MWM and the MWS under the no-till coupled with the residue retention improved the soil porosity and the soil water content levels the most.

Soil bulk density effects on soil microbial populations and enzyme activities during the growth of maize (Zea mays L.) planted in large pots under field exposure

2002 ◽  
Vol 82 (2) ◽  
pp. 147-154 ◽  
Author(s):  
C. H. Li ◽  
B. L. Ma ◽  
T. Q. Zhang
Keyword(s):  
Zea Mays ◽  
Bulk Density ◽  
Enzyme Activities ◽  
Soil Compaction ◽  
Microbial Population ◽  
Soil Bulk Density ◽  
Microbial Populations ◽  
Growth Stages ◽  
Soil Microbial ◽  
Plant Growth Stages

Soil compaction associated with inappropriate maneuvering of field equipment, and/or modern cropping system negatively affect soil physical properties, and thus, may limit microbial activities and biochemical processes, which are important to nutrient bioavailability. An experiment was carried out using the pot-culture technique to determine the effect of bulk density on soil microbial populations and enzyme activities in an Eutric Cambisol sandy loam soil (United Nations’ classification) planted with maize (Zea mays L.) in the Experimental Farm of Henan Agricultural University, Henan, China (34°49′N, 113°40′E). Numbers of bacteria, fungi, and actinomycetes and the enzyme activities of invertase, polyphenol oxidase, catalase, urease, protease, and phosphatase were determined at various stages during the plant growing season. Microbial numbers were negatively and linearly related to soil bulk density. With increases in soil bulk density from 1.00 to 1.60 Mg m-3, total numbers of bacteria, fungi and actinomycetes declined by 26-39%. The strongest correlations between the soil microbial population and bulk density occurred at the plant growth stages of the 6 fully expanded leaf (V6) and anthesis (R1), with R2 > 0.90 (P< 0.01) for all three microorganism categories. Increasing soil bulk density was related quadratically to the activities of soil invertase and polyphenol oxidase, protease and catalase. It appears that the greatest activities of most soil enzymes occurred at a bulk density of 1.0 to 1.3 Mg m-3, which are optimum for most field crops. The plant growth stages also had an important impact on soil enzyme activities and microbial populations, with strong positive associations between soil microorganisms and enzyme activities with crop growth. Key words: Maize, soil enzymes, microbial population, soil compaction, bulk density, Zea mays

scholarly journals Application of Multi-Component Conditioner with Clinoptilolite and Ascophyllum nodosum Extract for Improving Soil Properties and Zea mays L. Growth and Yield

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2005
Author(s):  
Jacek Długosz ◽  
Anna Piotrowska-Długosz ◽  
Karol Kotwica ◽  
Ewelina Przybyszewska
Keyword(s):  
Zea Mays ◽  
Soil Properties ◽  
Management Practices ◽  
Zea Mays L ◽  
Growth And Yield ◽  
Water Capacity ◽  
Available Water ◽  
Available Water Capacity ◽  
Study Sites ◽  
Plant Properties

The application of various conditioners in agriculture is one of the management practices used to improve soil quality and plant growth and development. The aim of this study was to assess the effect of a multi-component conditioner on the selected soil properties and maize (Zea mays L.) growth and yield. The effect of a conditioner on a set of soil properties and maize growth and yield was studied in one-year experiments carried out at three study sites, which were under a conventional tillage system. All of the study sites were located on farms in three geographic mezoregions in the Kuyavian-Pomeranian Region (Midwestern Poland). The studied soils were Haplic Luvisol (Janocin and Kobylnica) and Albic Luvisols (Krukówko) that were composed of sandy loam. A one-way analysis of variance (ANOVA) was used to determine the effect of a conditioner Solactiv on the soil and plant properties. The conditioner significantly affected the soil enzyme activities such as dehydrogenase (DHA), fluorescein sodium salt hydrolysis level (FDAH) and carboxymethylcellulose cellulase (CMC—cellulase); wherein the last one increased by about 16–20%. The application of Solactiv also increased the available K content (about 11%) but not the content of the microbial biomass C and N. Total porosity (TP), which was significantly higher in the soil treated with conditioner than in the control soils, increased the available water capacity (AWC) (about 2.2%). The higher AWC in the treated soil indicated the greater contribution of the mesopores in the TP (about 4%). A significantly higher readily available water capacity (RAWC) and small pores available water capacity (SAWC) was determined in the treated soils compared to the controls. Of the plant properties, only plant height, fresh cob biomass (BBCH 87–89) and fresh plant biomass (BBCH 84–85) were significantly increased by the conditioner. The application of Solactiv is considered to be a promising approach for developing sustainable agriculture by improving the soil’s biological activity and water-related properties.

scholarly journals Correlations of soybean yield with soil porosity and bulk density of an Oxisol

2018 ◽  
Vol 48 (4) ◽  
pp. 476-485
Author(s):  
Sérgio Ricardo Lima Negro ◽  
Diego dos Santos Pereira ◽  
Rafael Montanari ◽  
Flávio Carlos Dalchiavon ◽  
Christtiane Fernandes Oliveira
Keyword(s):  
Spatial Variability ◽  
Grain Yield ◽  
Bulk Density ◽  
Yield Components ◽  
Particle Density ◽  
Soil Porosity ◽  
No Tillage ◽  
Soybean Yield ◽  
Volumetric Flask ◽  
Soil Attributes

ABSTRACT The spatial variability of soil physical attributes is important to indicate management practices that best suit agricultural areas. This study aimed to analyze spatial correlations between soybean grain yield and soil mass-volume relationships, in order to select which attribute is correlated with yield, as well as to evaluate the spatial variability of soil attributes and yield components of this crop, in an Oxisol under no-tillage system. The soil attributes analyzed (0.0-0.10 m and 0.10-0.20 m) were the following ones: soil bulk density (paraffin-coated clod and volumetric ring methods), particle density (volumetric flask and modified volumetric flask methods) and total porosity. The soybean yield components were evaluated as it follows: grain yield, number of pods per plant, number of grains per pod, mass of 100 grains, grain mass per plant, plant population and plant height. The total soil porosity, calculated by the relations between the bulk density (volumetric ring method) and particle density (volumetric flask), in the 0.10-0.20 m layer, was the best indicator of soybean grain yield under no-tillage conditions.

DETERMINATION OF VARIABILITY IN SOIL PHYSICAL PROPERTIES AND MICROBIAL BIOMASS UNDER CONTINUOUS DIRECT-PLANTED CORN

1986 ◽  
Vol 66 (4) ◽  
pp. 747-750 ◽  
Author(s):  
M. R. CARTER ◽  
R. P. WHITE
Keyword(s):  
Zea Mays ◽  
Microbial Biomass ◽  
Spatial Variability ◽  
Prince Edward Island ◽  
Zea Mays L ◽  
Soil Surface ◽  
Soil Bulk Density ◽  
Soil Strength ◽  
Microbial Biomass C ◽  
Winter Period

The spatial variability of soil strength, porosity, and microbial biomass was determined under 4-yr continuous direct-planted silage corn (Zea mays L.) on Prince Edward Island. All soil properties changed relative to the row position. Microbial biomass C and N were lower in the in-row compared to the between-row position. Positional and depth differences for soil bulk density and volume of macropores (EPD > 50 μm) were only evident at the soil surface (0–8 cm). Temporal and spatial variations in soil strength indicated the extent of the rooting potential within the soil profile, the depth to compacted soil layers, and the degree of soil structure regeneration during the winter period. Key words: Spatial variability, soil strength, soil porosity, microbial biomass, direct-planted corn, Zea mays L.

scholarly journals Bulk density and porosity of soils influenced by skidding operations in the Nkrankwanta Off-Forest Reserve of Ghana

2021 ◽  
Vol 8 (2) ◽  
pp. 1409-1415
Author(s):  
Ammal Abukari ◽  
Donkor Christian ◽  
Kwame Ochire-Boadu
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Block Design ◽  
Soil Surface ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
Soil Porosity ◽  
Forest Reserve ◽  
Randomized Block Design ◽  
Increasing Trends

 Heavy forest machinery used in skidding has the capacity to influence the physical properties of soils. These may possibly lead to an upsurge in soil disruption and compaction of the soil surface decreases forest soil fertilities. This study assesses the effects of skidding on some soil physical properties such as the soil bulk density and porosity in the Nkrankwanta off-forest reserve in Ghana. The treatments comprised of four traffic intensity levels (1, 5, 10, and 15 passes) of the Mercedes Benz skidder (MB) Trac 1800 and a slope of two levels (less than 20 % and greater than 20 %) in a completely randomized block design. In addition, porosity and soil bulk density were assessed at varied distances from the MB Trac 1800. Soil bulk density results showed increasing trends with traffic frequency. Soil bulk density measured in the undisturbed area was 0.64 g cm-3 and 0.56 g cm-3 at slopes of less than 20% and greater than 20%, respectively. On the skid trail, soil bulk density significantly increased with traffic frequency (p<0.05). However soil porosity declined. Soil porosity estimated in uninterrupted area was 59.10 % and 57.40 % at < 20% and > 20% slope, respectively. Soil porosity was significantly influenced via different skidder passes (p<0.05). The soil physical properties were not influenced by the steepness of the slope however acted together in the number of passes to influence soil porosity. The impacts of the skidder on soil physical properties were significantly apparent at distances of 2 m to each sideway of the skidding trail. In conclusion, distinct responsiveness ought to be considered throughout the operations of skidding to curtail unfriendly influences on soil physical properties in ground-base skidding.

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