scholarly journals Adopción y difusión de prácticas de no laboreo en el olivar de la provincia de Granada

2011 ◽  
Vol 10 (1) ◽  
pp. 135 ◽  
Author(s):  
Juan Agustín Franco ◽  
Javier Calatrava
Keyword(s):  
Diffusion Process ◽  
External Factors ◽  
No Tillage ◽  
Tillage Practices ◽  
Probit Models ◽  
Olive Groves ◽  
Spanish Province ◽  
Farmer’S Perception ◽  
Over Time ◽  
Relevant Factors

This paper analyses the process of adoption of no-tillage in the olive groves of the Southern Spanish province of Granada. The data used comes from a survey carried out in 2005-2006 to 215 olive farmers. We first analyse the diffusion process of no-tillage practices over time by estimating several diffusion models. Then we identify some factors that determine their adoption by estimating two binomial probit models. Our results show that no-tillage is practiced by 90% of surveyed farmers. The diffusion process of no-tillage practices has been intense since the middle nineties, and has been based on the interactions among farmers in the area of study rather than influenced by other external factors. Some relevant factors that influence the adoption of no-tillage practices are irrigation, the continuity of the farming activity by some relative or farmer’s perception of the soil erosion problem.

scholarly journals Difusión de prácticas de lucha contra la erosión en el olivar de la cuenca del Alto Genil Granadino

2020 ◽  
Vol 29 (1) ◽  
pp. 359
Author(s):  
Javier Calatrava ◽  
Juan Agustín Franco
Keyword(s):  
Soil Conservation ◽  
Diffusion Processes ◽  
External Factors ◽  
Traditional Practices ◽  
Conservation Practices ◽  
No Tillage ◽  
Olive Groves ◽  
Environmental Measures ◽  
Using Data ◽  
Spanish Province

This paper analyses the degree of adoption of different soil conservation practices in the olive groves of the Spanish province of Granada using data from a survey of olive farmers. No-tillage and mulch using the grinded pruning residues are the most widespread practices, while few farmers do other more traditional practices. Despite its effectiveness in reducing erosion and its inclusion in the requirements of several agri-environmental measures, the use of vegetated covers is quite reduced. The diffusion processes of the main conservation practices have been based on the interactions among farmers rather than in other external factors.

Diversity of the bacterial community in the rice rhizosphere managed under conventional and no-tillage practices

2013 ◽  
Vol 51 (6) ◽  
pp. 747-756 ◽  
Author(s):  
Zubair Aslam ◽  
Muhammad Yasir ◽  
Hwan Sik Yoon ◽  
Che Ok Jeon ◽  
Young Ryun Chung
Keyword(s):  
Bacterial Community ◽  
No Tillage ◽  
Tillage Practices ◽  
Rice Rhizosphere

scholarly journals Forms of phosphorus in an oxisol under different soil tillage systems and cover plants in rotation with maize

2014 ◽  
Vol 38 (3) ◽  
pp. 972-979 ◽  
Author(s):  
Arminda Moreira de Carvalho ◽  
Mercedes Maria da Cunha Bustamante ◽  
Zayra Azeredo do Prado Almondes ◽  
Cícero Célio de Figueiredo
Keyword(s):  
Cover Crops ◽  
Rainy Season ◽  
Dry Season ◽  
Soil Tillage ◽  
No Tillage ◽  
Organic P ◽  
Tillage Systems ◽  
Tillage Practices ◽  
Spontaneous Vegetation ◽  
Labile P

Phosphorus fractions play a key role in sustaining the productivity of acid-savanna Oxisols and are influenced by tillage practices. The aim of this study was to quantify different P forms in an Oxisol (Latossolo Vermelho-Amarelo) from the central savanna region of Brazil under management systems with cover crops in maize rotation. Three cover crops (Canavalia brasiliensis, Cajanus cajan (L.), and Raphanus sativus L.) were investigated in maize rotation systems. These cover crops were compared to spontaneous vegetation. The inorganic forms NaHCO3-iP and NaOH-iP represented more than half of the total P in the samples collected at the depth of 5-10 cm during the rainy season when the maize was grown. The concentration of inorganic P of greater availability (NaHCO3-iP and NaOH-iP) was higher in the soil under no-tillage at the depth of 5-10 cm during the rainy season. Concentrations of organic P were higher during the dry season, when the cover crops were grown. At the dry season, organic P constituted 70 % of the labile P in the soil planted to C. cajan under no-tillage. The cover crops were able to maintain larger fractions of P available to the maize, resulting in reduced P losses to the unavailable pools, mainly in no-tillage systems.

scholarly journals Modelling the number of olive groves in Spanish municipalities

2016 ◽  
Vol 14 (1) ◽  
pp. e0201
Author(s):  
Maria-Dolores Huete ◽  
Juan A. Marmolejo
Keyword(s):  
Goodness Of Fit ◽  
Likelihood Estimation ◽  
External Factors ◽  
Discrete Distributions ◽  
Future Research ◽  
Total Output ◽  
Goodness Of Fit Test ◽  
Chi Square ◽  
Total Variability ◽  
Olive Groves

<p>The univariate generalized Waring distribution (UGWD) is presented as a new model to describe the goodness of fit, applicable in the context of agriculture. In this paper, it was used to model the number of olive groves recorded in Spain in the 8,091 municipalities recorded in the 2009 Agricultural Census, according to which the production of oil olives accounted for 94% of total output, while that of table olives represented 6% (with an average of 44.84 and 4.06 holdings per Spanish municipality, respectively). UGWD is suitable for fitting this type of discrete data, with strong left-sided asymmetry. This novel use of UGWD can provide the foundation for future research in agriculture, with the advantage over other discrete distributions that enables the analyst to split the variance. After defining the distribution, we analysed various methods for fitting the parameters associated with it, namely estimation by maximum likelihood, estimation by the method of moments and a variant of the latter, estimation by the method of frequencies and moments. For oil olives, the chi-square goodness of fit test gives <em>p</em>-values of 0.9992, 0.9967 and 0.9977, respectively. However, a poor fit was obtained for the table olive distribution. Finally, the variance was split, following Irwin, into three components related to random factors, external factors and internal differences. For the distribution of the number of olive grove holdings, this splitting showed that random and external factors only account about 0.22% and 0.05%. Therefore, internal differences within municipalities play an important role in determining total variability.</p>

scholarly journals Wealth of nomads – an exploratory analysis of livestock inequality in the Saami reindeer husbandry

2021 ◽  
Author(s):  
Marius Warg Næss ◽  
Bård-Jørgen Bårdsen
Keyword(s):  
Primary Source ◽  
Wealth Inequality ◽  
External Factors ◽  
Social Differentiation ◽  
Reindeer Herding ◽  
Reindeer Husbandry ◽  
The Poor ◽  
Wealth Inequalities ◽  
Rank Differences ◽  
Over Time

Social inequality is pervasive in contemporary human societies. Nevertheless, there is a view that livestock, as the primary source of wealth, limits the development of inequalities, making pastoralism unable to support complex or hierarchical organisations. Thus, complex nomadic pastoral organisation is predominantly caused by external factors, i.e., historically nomadic political organisation mirrored the neighbouring sedentary population's sophistication. Using governmental statistics on reindeer herding in Norway (2001 - 2018), this study demonstrates nothing apparent in the pastoral adaptation with livestock as the main base of wealth that level wealth inequalities and limits social differentiation. This study found that inequality was generally decreasing in terms of the Gini coefficient and cumulative wealth. For example, the proportion owned by the wealthy decreased from 2001 to 2018, while the proportion owned by the poor increased. Nevertheless, rank differences persist over time with minor changes. Especially, being poor is stable: around 50% of households ranked as poor in 2001 continued to be so in 2018. In sum, results from this study indicate that pastoral wealth inequality follows the same patterns as all forms of wealth. Wealth accumulates over time, and because the highest earners can save much of their income (i.e., newborn livestock), low earners cannot. High earners can thus accumulate more and more wealth over time, leading to considerable wealth inequalities.

scholarly journals Pore morphology changes under tillage and no-tillage practices

Geoderma ◽  
2007 ◽  
Vol 142 (1-2) ◽  
pp. 226-236 ◽  
Author(s):  
Fabien Hubert ◽  
Vincent Hallaire ◽  
Paul Sardini ◽  
Laurent Caner ◽  
Djilali Heddadj
Keyword(s):  
No Tillage ◽  
Pore Morphology ◽  
Tillage Practices ◽  
Morphology Changes

Comparison of soil CO2 emissions from three different tillage methods on chernozem soil

2021 ◽  
Author(s):  
Márton Dencső ◽  
Ágota Horel ◽  
Zsófia Bakacsi ◽  
Eszter Tóth
Keyword(s):  
Greenhouse Gas Emission ◽  
Environmental Parameters ◽  
Conventional Tillage ◽  
No Tillage ◽  
Chernozem Soil ◽  
Long Term Effects ◽  
Tillage Practices ◽  
The Difference ◽  
Tillage Methods

&lt;p&gt;Tillage practices influence soil CO&lt;sub&gt;2&lt;/sub&gt; emissions, hence many research investigate the long-term effects of conservation and conventional tillage methods e.g. ploughing and no-tillage on soil greenhouse gas emission.&lt;/p&gt;&lt;p&gt;The experiment site is an 18-years-old long-term tillage trial established on chernozem soil. During 2020, we took weekly CO&lt;sub&gt;2 &lt;/sub&gt;emission measurements in the mouldboard ploughing (MP), no-tillage (NT), and shallow cultivation (SC) treatments Tillage depth was 26-30 cm, 12-16 cm and 0 cm in the cases of MP, SC and NT respectively. The experiment was under wither oat cultivation.&lt;/p&gt;&lt;p&gt;We investigated the similarity in the CO&lt;sub&gt;2&lt;/sub&gt; emission trends of SC to MP or NT treatments. Besides CO&lt;sub&gt;2&lt;/sub&gt; emission measurements, we also monitored environmental parameters such as soil temperature (Ts) and soil water content (SWC) in each treatment.&lt;/p&gt;&lt;p&gt;During the investigated year (2020 January - December) SC had higher annual mean CO&lt;sub&gt;2&lt;/sub&gt; emission (0.115&amp;#177;0.083 mg m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;) compared to MP (0.099&amp;#177;0.089 mg m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;) and lower compared to NT (0.119&amp;#177;0.100 mg m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;). The difference of the CO&lt;sub&gt;2&lt;/sub&gt; emissions was significant between SC and MP (p&lt;0.05); however, it was not significant between SC and NT (p&gt;0.05) treatments. The Ts dependency of CO&lt;sub&gt;2&lt;/sub&gt; emission was moderate in all treatments. CO&lt;sub&gt;2&lt;/sub&gt; emissions were moderately depended on SWC in MP and SC, and there was no correlation between these parameters in NT.&lt;/p&gt;&lt;p&gt;The annual mean CO&lt;sub&gt;2&lt;/sub&gt; emission of the SC treatment was more similar to the NT, than to the MP treatment.&lt;/p&gt;

STUDY ON EFFECTS OF DISTRUTIVE AGENTS ON THE ARTWORKS

2017 ◽  
Vol 31 (1) ◽  
pp. 75-81
Author(s):  
Valeria Mirela Brezoczki ◽  
◽  
Emese Bonta ◽  
Keyword(s):  
Negative Impact ◽  
Art Museum ◽  
External Factors ◽  
Cultural Value ◽  
Negative Effects ◽  
Active Monitoring ◽  
Baia Mare ◽  
Different Types ◽  
The Impact ◽  
Over Time

The paper describes a series of effects created by the impact of environmental factors on artworks in museums, as well as the way that active monitoring of these destructive agents (temperature and relative humidity) is done. Over time, artefacts exhibited within museums are subject to a series of degradations caused by external factors (air components, humidity, temperature, sunlight, bacteria, molds or fungi etc.), which can leave a negative impact on these goods with cultural value. The main observed negative effects are directly and intimate related to the deterioration of wood sculptures by the occurrence of cracks and the installation of different types of bacteria; the appearance of brownish-red spots on the surface of the paper and the increase in its reliability; various types of corrosion of artworks from different metals; color losses and cracks on paintings etc. The study brings to the fore the damaging effects produced on the different cultural works hosted within the County Art Museum - Art Center Baia Mare.

Constructing the “Greener, Greater” City

2017 ◽  
Author(s):  
Lindsay K. Campbell
Keyword(s):  
Social Networks ◽  
Planning Process ◽  
Urban Forestry ◽  
External Factors ◽  
Central Question ◽  
Urban Nature ◽  
Sustainability Planning ◽  
Actor Networks ◽  
Internal And External Factors ◽  
Over Time

Chapter seven synthesizes these two cases, making comparisons across the three thematic areas explored in the book—politics, discourse, and materiality. It begins by returning to the central question of why urban forestry was so appealing that it merited its own signature mayoral initiative in PlaNYC, whereas urban agriculture was overlooked. It analyzes the networks, public-private partnerships, elite ties, and bureaucratic structures that were involved in PlaNYC, revealing whose voice was heard and whose voice was ignored in the sustainability planning process. Then, bearing in mind that the politics of urban nature is both framed by storylines and influenced by non-human actants, the chapter widens this analysis from a focus on politics and social networks to a focus on actor-networks and key narratives. Finally, the chapter observes how the cases shift over time in response to both internal and external factors, even within a four year window.

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