Properties of deep sandy soils and the growth of Lovegrass, Eragrostis curvula (Schrad.) Nees

Soil Research ◽  
1970 ◽  
Vol 8 (2) ◽  
pp. 123 ◽  
Author(s):  
P Farrington ◽  
NA Campbell
Keyword(s):  
Water Table ◽  
Sandy Soils ◽  
Clay Content ◽  
Coarse Sand ◽  
Annual Rainfall ◽  
Sand Content ◽  
Moisture Supply ◽  
Close Relationship ◽  
Site Variation ◽  
The Relationship

The relationships between soil properties and the annual yield of lovegrass were studied on deep sandy soils near Meckering, Western Australia. Mean annual rainfall of the area is 378 mm, most of which falls between May and September. At sites with a water table a close relationship was established between annual yield and two properties-the depth to a water table, and the silt and clay content in the 30-60 cm layer. The relationship accounted for at least 87% of the between-site variation in yield, and was maintained between years, and over a range of nutrition levels. At sites without a water table, yield was closely related to soil mechanical composition. Where the coarse sand content in the profile exceeded 70%, survival of the grass was poor. The importance of soil moisture supply to growth of the grass in these soils is discussed, and the success of the 'edaphic' trial technique is briefly assessed.

NATIVE CLAY-FIXED AMMONIUM CONTENT, AND THE FIXATION OF ADDED AMMONIUM OF SOME SOILS OF EASTERN CANADA

1978 ◽  
Vol 58 (1) ◽  
pp. 27-38 ◽  
Author(s):  
F. J. SOWDEN ◽  
G. J. ROSS ◽  
A. A. MacLEAN
Keyword(s):  
New Brunswick ◽  
Clay Mineralogy ◽  
Sandy Soils ◽  
Clay Content ◽  
Lower Percentage ◽  
Slight Effect ◽  
Eastern Canada ◽  
Surface Soils ◽  
Close Relationship ◽  
Cultivated Soils

A study was made of the native clay-fixed NH4+ of some typical soils of Eastern Canada. Usually the amount of fixed NH4+ was related to the clay contents and increased down the profile but there were frequent exceptions to both of these generalizations. The amounts found ranged from 12 to 450 μg fixed NH4+–N/g soil. In general, with some cultivated soils, the cropped areas had lower native fixed NH4+ contents than areas that were in sod. The capacity to fix added NH4+ was usually low in the sandy soils and in general the B and C horizons fixed more NH4+ than the A horizons. For the soils that did fix NH4+, a larger amount but lower percentage was fixed as the amount of added NH4+ was increased. The amount of water in which the NH4+ was added had a slight effect on the percentage fixed, being a little lower as the amount of water was increased. The cultivated New Brunswick surface soils had low NH4+ fixing capacities. Analysis of the clay mineralogy of some soils showed a fairly close relationship between vermiculitic clay content and NH4+ fixation.

scholarly journals Evaluating the Effect of Absolute and Barometric Pressures on Borehole Performance in Tolon and Wa West Districts of Northern Ghana

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
A-G Shaibu ◽  
H. Ishikawa
Keyword(s):  
Water Level ◽  
Water Table ◽  
Water Pressure ◽  
Barometric Pressure ◽  
Northern Ghana ◽  
Annual Rainfall ◽  
Rainfall Regime ◽  
Rainfall Variation ◽  
Granitoid Intrusions ◽  
The Relationship

Groundwater is a very important asset to the people of Northern Ghana where majority are farmers as its used for many domestic and agricultural activities. The research evaluated the effects of absolute and barometric pressures on water-table fluctuations of boreholes in Wa West and Tolon Districts of Northern Ghana. Pumping tests, absolute and barometric pressures were monitored using non-vented water level sensors for one year, from 2015-2016. The results of the research indicate that, the aquifer of the Kpaligung borehole is of Voltaian province while that of Baleofili is Granitoid intrusions. The yield of the Baleofili borehole is 1.8 m3/h (30 l/min), while that of the Kpaligung borehole yields 1.4 m3/h (23 l/min). Rainfall regime has considerable effects on Kpaligung and Baleofili boreholes` recharge and water-table fluctuation due to the effects of both absolute and barometric pressure throughout the year. The relationship between barometric pressure and water pressure for the Kpaligung borehole shows positive, but weak correlation value (0.2) that is, increase in barometric pressure leads to an increase in water level and vice versa. The Baleofili borehole shows an inverse relationship between barometric pressure and water level pressure with the coefficient of correlation being 0.5. The relationship between the changes in water level of the boreholes with the corresponding change in rainfall amount suggests that the groundwater recharge of the boreholes depends considerably on annual rainfall variation in the study areas considered.

scholarly journals Relationship between Nematodes and some Soil Properties in the Rhizosphere of Banana Plants

2021 ◽  
Vol 82 ◽  
pp. 1-12
Author(s):  
Amal Ahmed Mohammed Al-Ghamdi
Keyword(s):  
Negative Correlation ◽  
Soil Phosphorus ◽  
Nitrogen Concentration ◽  
Fine Sand ◽  
Coarse Sand ◽  
Nematode Population ◽  
Soil Parameters ◽  
Soil Nematode ◽  
Sand Content ◽  
The Relationship

Nematodes are plant-parasitic organisms that cause alterations in the chemical and physical environment of soils. This study investigates the relationship between nematode occurrence and some soil parameters. The results showed that the proportion of nematodes in soil was negatively correlated with soil pH (r2= 0.89); however, it increased with increasing electrical conductivity (EC) (r2 = 0.95), soil moisture (SM) (r2 = 0.60), and organic matter (OM) content (r2= 0.78). A positive correlation was found between the proportion of nematodes in the roots and the amount of coarse sand, while a negative correlation existed between the proportion of nematodes and the amount of fine sand, clay, and silt. The degree of colonization by nematodes increased with increasing coarse sand content (r2= 0.91). Conversely, the soil nematode population decreased with increasing fine sand content (r2= 0.83), clay (r2= 0.80), and silt content (r2= 0.97). The nematode population in banana roots correlated with soil phosphorus (r2 = 0.88), potassium (r2 = 69), calcium (r2 = 0.78), and magnesium levels (r2=0.78). Conversely, a negative correlation was found between nitrogen concentration and the nematode population in banana roots (r2=0.76). Overall, the population of nematodes in soil affects its pH, EC, SM, and OM content.

Towards a framework for predicting impacts of land-use on recharge: 1. A review of recharge studies in Australia

Soil Research ◽  
2002 ◽  
Vol 40 (3) ◽  
pp. 397 ◽  
Author(s):  
Cuan Petheram ◽  
Glen Walker ◽  
Rodger Grayson ◽  
Tomas Thierfelder ◽  
Lu Zhang
Keyword(s):  
Land Use ◽  
Significant Proportion ◽  
Sandy Soils ◽  
Clay Content ◽  
High Water ◽  
Annual Rainfall ◽  
Future Research ◽  
Deep Drainage ◽  
Significant Difference ◽  
The Impact

This work investigated the potential for developing generic relationships from measurements of recharge made in previous studies that would allow the assessment of the impact of land-use change on recharge. Forty-one studies that measured recharge from across Australia were reviewed to generate a database. Studies were characterised on the basis of broad soil type (sand or non-sand), land-use/vegetation (annual, perennial, or trees), and annual rainfall. Attempts to develop quantitative recharge relationships met with limited success because of the limited geographical coverage of the studies, lack of details on the study sites, and high variability in the data. Nevertheless, the following relationships for annual vegetation were statistically valid: Ln(recharge) = –19.03 + 3.63 ln(rainfall) [for sandy soils]; F(1, 96) = 149.03; R2 = 0.60 Ln(recharge) = –12.65 + 2.41 ln(rainfall) [for non-sandy soils]; F(1,151) = 46.87; R2 = 0.23 The low degree of explanation of rainfall for the annual non-sand data suggests that it is likely that soil structure becomes more important for higher clay content soils. Recharge under trees was negligible compared with that under annuals. These relationships should not be used in areas such as those where: preferential pathway flow is the dominant recharge mechanism, rainfall is summer dominant, lateral hydraulic gradients are high, water holding capacities are very low, or there are fresh, high-yielding aquifers. Collectively, the results show that: (1) rainfall explains a significant proportion of the observed recharge variation; (2) there is a significant difference between mean recharge under trees and annual vegetation; (3) there is a significant difference between mean recharge under annual vegetation on sand soils and non-sand soils; (4) the land-use groups had a greater influence on recharge than the broad soil groups used in this study; (5) there is a lack of annual recharge measurements under perennial pastures/crops, under trees in high rainfall zones (i.e. >600 mm/year) and in areas of summer dominant rainfall; (6) across a broad range of locations, recharge is higher under shallow-rooted annual vegetation than deep-rooted vegetation; and (7) the estimator of Zhang et al. (1999) for 'excess water' may provide a useful indication of the upper limit to the long-term average recharge measurements. Large variation in the data resulted from disparity in the recharge techniques used, the coarse soil categories used, failure to account for land management factors, and complications due to macropores and shallow water tables. It is proposed that the value of the information presented here may be enhanced in future studies by incorporating information from qualitative studies, particularly paired-site studies, and by drawing information from unsaturated zone and groundwater modelling studies, particularly comparisons of different land-uses at similar locations. Furthermore, the results of this study can be used to identify gaps in knowledge and, hence, target areas for future research such as annual recharge measurements beneath perennial vegetation. dryland salinity, groundwater management, deep drainage.

Predicting the Dose of Warfarin for Therapeutic Anticoagulation

1982 ◽  
Vol 47 (03) ◽  
pp. 230-231 ◽  
Author(s):  
N K Sharma ◽  
P A Routledge ◽  
M D Rawlins ◽  
D M Davies
Keyword(s):  
Therapeutic Range ◽  
Significant Relationship ◽  
Maintenance Dose ◽  
Warfarin Dose ◽  
Loading Dose ◽  
Intravenous Injections ◽  
Therapeutic Anticoagulation ◽  
Close Relationship ◽  
The Relationship ◽  
Anticoagulant Response

SummaryThe validity of a previously described technique for predicting warfarin requirements based on the anticoagulant response to a fixed loading dose was assessed prospectively in 57 patients. There was a close relationship between the predicted and initially observed daily warfarin dose required to maintain the patient within the therapeutic range for anticoagulation. The significant relationship between predicted and observed maintenance dose persisted at 4 and 12 weeks although it decreased with increasing time.The relationship between observed and predicted maintenance requirement of warfarin was not affected by the concomitant use of intermittent intravenous injections of heparin when 9 hr was allowed to elapse between the previous dose of heparin and the thrombotest estimation on which the prediction was based.It is concluded that the method is valuable in predicting an individual’s warfarin requirement, although it does not obviate the need for regular monitoring of anticoagulant control.

Hubungan antara Luas Lesi pada Foto Toraks Penderita TB Paru Dewasa yang Memiliki Riwayat Diabetes Melitus dengan Indeks Massa Tubuh di Rumah Sakit Hasan Sadikin Bandung

2016 ◽  
Vol 1 (3) ◽  
pp. 138-144
Author(s):  
Ina Edwina ◽  
Rista D Soetikno ◽  
Irma H Hikmat
Keyword(s):  
Chest Radiograph ◽  
Chi Square ◽  
Pulmonary Tb ◽  
X Ray ◽  
Consecutive Sampling ◽  
Close Relationship ◽  
Chi Square Test ◽  
Chest X Ray ◽  
The Relationship ◽  
Diabetes Melitus

Background: Tuberculosis (TB) and diabetes mellitus (DM) prevalence rates are increasing rapidly, especially in developing countries like Indonesia. There is a relationship between TB and DM that are very prominent, which is the prevalence of pulmonary TB with DM increased by 20 times compared with pulmonary TB without diabetes. Chest X-ray picture of TB patients with DM is atypical lesion. However, there are contradictories of pulmonary TB lesion on chest radiograph of DM patients. Nutritional status has a close relationship with the morbidity of DM, as well as TB.Objectives: The purpose of this study was to determine the relationship between the lesions of TB on the chest radiograph of patients who su?er from DM with their Body Mass Index (BMI) in Hasan Sadikin Hospital Bandung.Material and Methods: The study was conducted in Department of Radiology RSHS Bandung between October 2014 - February 2015. We did a consecutive sampling of chest radiograph and IMT of DM patients with clinical diagnosis of TB, then the data was analysed by Chi Square test to determine the relationship between degree of lesions on chest radiograph of pulmonary TB on patients who have DM with their BMI.Results: The results showed that adult patients with active pulmonary TB with DM mostly in the range of age 51-70 years old, equal to 62.22%, with the highest gender in men, equal to 60%. Chest radiograph of TB in patients with DM are mostly seen in people who are obese, which is 40% and the vast majority of lesions are minimal lesions that is equal to 40%.Conclusions: There is a signifcant association between pulmonary TB lesion degree with BMI, with p = 0.03

Energetic relationships for crushing of soil clods

2006 ◽  
Vol 2 (1) ◽  
pp. 51-72
Author(s):  
István Patay ◽  
Virág Sándor
Keyword(s):  
Moisture Content ◽  
Specific Energy ◽  
Soil Moisture Content ◽  
Energy Requirement ◽  
Clay Content ◽  
Clay Soils ◽  
Rigid Support ◽  
Soil Plasticity ◽  
Specific Energy Requirement ◽  
The Relationship

Clod crushing is a principal problem with soils of high clay content. Therefore, there is a need for determining the conditions for clod breaking and clod crushing. The objective of the work was to develop a special purpose tool for single clod breaking both by rigid support of the clod and by a single clod supported by soil and to develop a machine for clod crushing. Furthermore, the purpose was to determine the relationship between the specific energy requirement for clod crushing in the function of soil plasticity and the soil moisture content by the means of the developed tool and machine. The main result of the experiments is summarized in a 3D diagram where the specific energy requirement for soil clod crushing is given in the function of the moisture content and the plasticity index for different clay soils.

TAFSIR AYAT-AYAT ZAKAT SEBAGAI PENGUAT KONSEP FILANTROPI EKONOMI KEUMMATAN (Tafsir Verses Of Zakat As The Booster Of Public Economic Philanthropy Concept)

2019 ◽  
Vol 3 (2) ◽  
pp. 117-137
Author(s):  
Mustaqim Makki
Keyword(s):  
Economic Crisis ◽  
Human Life ◽  
Minimum Level ◽  
Relationship With God ◽  
Public Economic ◽  
Close Relationship ◽  
Vertical Relationship ◽  
The Relationship ◽  
Very High ◽  
Functional Content

Zakat merupakan salah satu sendi pokok ajaran Islam. Urgensi zakat yang merupakan anjuran agama Islam untuk menunaikan zakat dan memberikannya kepada yang berhak dengan ketentuan mencapai nishabnya, (kadar minimum harta tertentu) mempunyai nilai sangat signifikan dalam kehidupan manusia. Seorang insan yang sarat akan segala permasalahan pada fitrahnya menuntut untuk selalu berinteraksi kepada sesama, baik berupa materi maupun non materi. Zakat merupakan maliyah ijtima’iyyah yang mengandung nilai-nilai filantropi yang sangat tinggi, karena ketika mengaplikasikan kewajiban zakat kita telah membantu sesama serta mengurangi kesenjangan yang disebabkan beberapa sifat manusia diantaranya adalah sifat kikir, dengki dan iri hati. Menguatnya kembali harapan banyak kalangan terhadap implementasi filantropi Islam, baik dalam bentuk zakat, infak, sedekah, dan wakaf, memiliki keterkaitan erat dengan kondisi bangsa yang belum sepenuhnya bangkit dari keterpurukan sebagai dampak dari krisis ekonomi yang berkepanjangan. Kondisi ini berakibat kesenjangan penguasaan perekonomian antar warga negara menjadi kian lebar. Pada saat itulah, ziswaf (zakat, infak, sedekah, dan wakaf) kembali dilirik dan diharapkan menjadi alternatif solusi terhadap problem kemiskinan umat. Manusia sebagai khalifah fil ardh dalam Al Qurán menekankan muatan fungsional yang harus diemban oleh manusia dalam melaksanakan tugas-tugas kesejarahan dalam kehidupannya di muka bumi. Kaitan dengan konsep tersebut, ada dua fungsi manusia. Pertama: Manusia sebagai hamba (ábid), dituntut untuk sukses menjalin hubungan secara vertikal dalam hal ini hubungannya dengan ketuhanan (Teologis). Kedua adalah manusia sebagai khalifah, dituntut untuk sukses menjalin hubungan secara horizontal dalam hal ini hubungan terhadap manusia.Kata kunci: tafsir ayat zakat, filantropi, ekonomi keummatanAbstract:Zakat is one of the main points of Islamic teachings. The urgency of zakat which is suggested by Islam to fulfill and give it to those who are referred to with the provisions to reach their nishab, (minimum level of certain assets) has a very significant value in human life. A person who is full of all problems in his/her natural demands will always get interaction with other people, either material or non-material. Zakat is maliyah ijtima’iyyah which contains very high philanthropic values, because when applying the obligation of zakat we have helped others and reduced the gaps caused by some human traits including miser, jealousy and envy. The reinforcement of the expectations (estimation) from any levels on the implementation of Islamic philanthropy, which in the form of zakat, donation, alms and endowments, has a close relationship with the condition of the country that has not fully risen from bad economic adversity due to economic crisis. This condition causes a widening of the economic mastery among the citizens. At that moment, ziswaf (zakat, infaq, alms, and waqf) was again given a serious attentition and expected to be an alternative solution to the problem of poverty among citizens. Humans as khalifah fil ardh in the Qur'an emphasize the functional content that must be carried by humans in carrying out historical tasks in their lives on earth. In accordance with this concept, there are two human functions. First: Humans as servants (ábid), are required to succeed in establishing a vertical relationship in this case the relationship with God (Theological). Second, humans as caliphs, are required to succeed in establishing horizontal relationships in this case the relationship to humans.

INTER AKSI AGAMA DAN BUDAYA

EMPIRISMA ◽  
2018 ◽  
Vol 27 (1) ◽  
Author(s):  
Mohammad Arif Dan Yuli Darwati
Keyword(s):  
Human Life ◽  
Belief System ◽  
Cultural Interaction ◽  
Cultural Economic ◽  
Modern Period ◽  
Or Groups ◽  
Close Relationship ◽  
History Of ◽  
The Relationship ◽  
Determining Factor

This paper will try to explain the relationship between religion and culture. These two topics are the most important items that are inseparable in the history of human civilization from the classical to the modern period. Religion is ahuman belief system that is related to God. If the rule comes from God, then it cannot be said to be a culture, because it is not human creation, but God’s creation that is absolute. Religion is interpreted as part of the life (culture) ofindividuals or groups, each of which has the authority to understand religion and apply it. With the characteristics as indicated by Fazlur Rahman, wherever religion is located, it is hoped that it can provide guidance on values or moralsfor all activities of human life, whether social, cultural, economic or political. Not infrequently also religion becomes a determining factor in the adhesive process of social cultural interaction of the community as well as unifying thenation. Culture and religion are something different but can influence each other so that new cultures or mixing of cultures emerge. The opinion of Endang Saifudin Anshari who said in his writing that religion and culture do notinclude each other, in principle one is not part of the other and each consists of itself. Between them, of course, they are closely related like us, we see in everyday life and human life. As also seen in the close relationship between husband and wife who can give birth to a son but the husband is not part of the wife, and vice versa. Religion and culture are two different things but cannot be separated. The existence of a religion will be greatly influenced and affect thepractice of a religion in question. And conversely, a culture will be greatly influenced by the beliefs of the society in which culture develops. Therefore religion is not only an individual problem but religion is also a social affair whichultimately religious people are not only able to give birth to individual piety but also must be able to give birth to social piety.Key words: Interaction, Religion, Culture,

Administrasi Hubungan Sekolah Dan Masyarakat

2020 ◽  
Author(s):  
Siti Aliifah Deka Putri
Keyword(s):  
Personal Growth ◽  
Social System ◽  
Educational Needs ◽  
Educational Goals ◽  
Close Relationship ◽  
The Relationship

The relationship between the school and the community is essentially a very instrumental tool in fostering and developing the personal growth of students in schools. school as a social system is an integral part of a larger social system that is society. Schools and communities have a very close relationship in achieving school or educational goals effectively and efficiently. Instead the school must also support the achievement of goals or fulfillment of society, especially educational needs. So it is clear between the school and the community must be fostered a harmonious relationship.

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