Assessment of grass root effects on soil piping in sandy soils using the pinhole test

Geomorphology ◽  
2017 ◽  
Vol 295 ◽  
pp. 563-571 ◽  
Author(s):  
Anita Bernatek-Jakiel ◽  
Wouter Vannoppen ◽  
Jean Poesen
Keyword(s):  
Sandy Soils ◽  
Soil Piping ◽  
Grass Root ◽  
Root Effects ◽  
Pinhole Test

scholarly journals Contribution of roots and shoots of Brachiaria species to soybean performance in succession

2017 ◽  
Vol 52 (8) ◽  
pp. 592-598 ◽  
Author(s):  
Alvadi Antonio Balbinot Junior ◽  
Julio Cezar Franchini Dos Santos ◽  
Henrique Debiasi ◽  
Anderson Hideo Yokoyama
Keyword(s):  
Grain Yield ◽  
Cover Crops ◽  
Block Design ◽  
Grass Species ◽  
Crop Season ◽  
Randomized Complete Block Design ◽  
Grass Root ◽  
Root Effects ◽  
Urochloa Brizantha

Abstract: The objective of this work was to evaluate the effect of roots and straw of palisade grass (Urochloa brizantha) and Ruzi grass (U. ruziziensis), used as cover crops in autumn-winter, on soybean performance. Seven treatments were evaluated in a randomized complete block design, with four replicates: fallow, during autumn-winter; straw of U. ruziziensis or U. brizantha 'BRS Piatã', distributed in plots kept under fallow in the winter, without roots; plots only with roots of U. ruziziensis or U. brizantha, without straw; and plots with straw and roots of U. ruziziensis or U. brizantha. The grass species were planted during the 2014/2015 crop season, and treatments were evaluated at the end of the 2015/2016 crop season, without drought during the soybean cycle. The oil and protein contents of soybean grains were not affected significantly by the treatments. However, the cultivation of grass species during autumn-winter increased soybean grain yield in comparison with fallow. Grass root effects are more expressive than those of straw. The combined presence of roots and straw confers a better performance to soybean than the isolated presence of roots or straw.

Population dynamics of Viola pedata on deep sandy soils in a fragmented and degraded landscape

2020 ◽  
Vol 21 (1) ◽  
pp. 35-44
Author(s):  
Janet L Gehring ◽  
Caitlin Foster ◽  
Alan Yepsen
Keyword(s):  
Population Dynamics ◽  
Sandy Soils

New Grounded Feminist Approach to Islam in Indonesia: A Textual Analysis of Rahima and Fahmina’s Publications

2020 ◽  
Vol 2 (1) ◽  
pp. 25-52
Author(s):  
Nina Nurmila
Keyword(s):  
Migrant Workers ◽  
Textual Analysis ◽  
Dominant Male ◽  
Young Generation ◽  
Feminist Activism ◽  
Government Organizations ◽  
Violent Extremism ◽  
Grass Root ◽  
Grass Root Level ◽  
Nahdlatul Ulama

This article aims to offer a textual analysis of Rahima and Fahmina’s publications. Rahima and Fahmina are two Non-Government Organizations founded in 2000 by a young generation of Nahdlatul Ulama (NU), one of the largest moderate Muslim organizations in Indonesia. There are more similarities than differences between Rahima and Fahmina because the persons involved in the organizations are close friends and, in fact, the same persons even though both are based in two different cities. Since their foundation, both Rahima and Fahmina have published many books and magazines. This article argues that both Rahima dan Fahmina publications offer a new grounded feminist approach to Islam, which counterbalance the dominant male-biased normative approach to Islam in most Muslim societies. These publications are based on their feminist activism and community engagement with the grass-root level of many Nahdlatul Ulama pesantrens (Islamic boarding schools). The topics of their publication cover many current issues such as fiqh of women’s reproductive rights and empowerment, fiqh of the daily life of migrant workers, fiqh of anti-trafficking, prevention of child marriage, violent extremism and religious pluralism. As a result, the progressive nature of their publications negates the existing label of NU as the traditionalist organization.

IN SITU SOIL FLUSHING - STUDIES ON REMEDIATION EFFICIENCY OF POLLUTED SANDY SOILS WITH ORGANIC ACIDS

2012 ◽  
Vol 11 (12) ◽  
pp. 2163-2168
Author(s):  
Alexandra-Dana Chitimus ◽  
Valentin Nedeff ◽  
Emilian Florin Mosnegutu ◽  
Mirela Panainte
Keyword(s):  
Organic Acids ◽  
Sandy Soils ◽  
Soil Flushing ◽  
Remediation Efficiency

Studies on a Novel Qualification Method of Silicon Nitride Layer

2016 ◽  
Author(s):  
Younan Hua ◽  
Bingsheng Khoo ◽  
Henry Leong ◽  
Yixin Chen ◽  
Eason Chan ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Silicon Substrate ◽  
Nitride Layer ◽  
Passivation Layer ◽  
Wafer Fabrication ◽  
Wafer Surface ◽  
Si3n4 Layer ◽  
Silicon Nitride Layer ◽  
Passivation Layers ◽  
Pinhole Test

Abstract In wafer fabrication, a silicon nitride (Si3N4) layer is widely used as passivation layer. To qualify the passivation layers, traditionally chemical recipe PAE (H3PO4+ HNO3) is used to conduct passivation pinhole test. However, it is very challenging for us to identify any pinholes in the Si3N4 layer with different layers underneath. For example, in this study, the wafer surface is Si3N4 layer and the underneath layer is silicon substrate. The traditional receipt of PAE cannot be used for passivation qualification. In this paper, we will report a new recipe using KOH solution to identify the pinhole in the Si3N4 passivation layer.

Contributions to the Knowledge of Sandy Soils from Oltenia Plain

2020 ◽  
Vol 71 (1) ◽  
pp. 192-200
Author(s):  
Anca-Luiza Stanila ◽  
Catalin Cristian Simota ◽  
Mihail Dumitru
Keyword(s):  
Chemical Properties ◽  
Soil Formation ◽  
Sandy Soils ◽  
Physical Geography ◽  
Parent Material ◽  
Negative Effects ◽  
Small Water ◽  
Wind Characteristic ◽  
The One ◽  
Physical And Chemical

Highlighting the sandy soil of Oltenia Plain calls for a better knowledge of their variability their correlation with major natural factors from each physical geography. Pedogenetic processes specific sandy soils are strongly influenced by nature parent material. This leads, on the one hand, climate aridity of the soil due to strong heating and accumulation of small water reserves, consequences emphasizing the moisture deficit in the development of the vegetation and favoring weak deflation, and on the other hand, an increase in mineralization organic matter. Relief under wind characteristic sandy land, soil formation and distribution has some particularly of flat land with the land formed on the loess. The dune ridges are less evolved soils, profile underdeveloped and poorly supplied with nutrients compared to those on the slopes of the dunes and the interdune, whose physical and chemical properties are more favorable to plant growth.Both Romanati Plain and the Blahnita (Mehedinti) Plain and Bailesti Plain, sand wind shaped covering a finer material, loamy sand and even loess (containing up to 26% clay), also rippled with negative effects in terms of overall drainage. Depending on the pedogenetic physical and geographical factors that have contributed to soil cover, in the researched were identified following classes of soils: protisols, cernisols, cambisols, luvisols, hidrisols and antrosols.Obtaining appropriate agricultural production requires some land improvement works (especially fitting for irrigation) and agropedoameliorative works. Particular attention should be paid to preventing and combating wind erosion.

Response of Tifway Bermudagrass to Sulfur on Sandy Soils 1

1972 ◽  
Vol 64 (3) ◽  
pp. 359-361 ◽  
Author(s):  
G. M. Volk ◽  
G. C. Horn
Keyword(s):  
Sandy Soils
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