scholarly journals A Scale for Assessing the Quality of Date and Date Palm Cultivars

2021 ◽  
Vol 5 (2) ◽  
pp. 203-213
Author(s):  
Abdulridha Al-Mayah

In this research, a scale was developed to assess the quality of fruits of date palm cultivars. The scale was based on the evaluation of the fruiting characteristics of the date palm, which included the characteristics of Khalal, which given 10 degrees, Rutab characteristics which given 20 degrees, Tamer characteristics which given 20 degrees, production which given 5 degrees and ripening time which 5 degrees, with a total of 60 degrees for the quality of cultivar. The quality of cultivar was divided into five classes or levels of quality depending on the sum of the degrees of the five fruit characteristics, as follows: 1-14 Low quality, 15-24 Medium (average) quality, 25-34 Good quality, 35-44 Very good quality and 44-60 Excellent quality.

2009 ◽  
Vol 27 (1) ◽  
pp. 24-30 ◽  
Author(s):  
Andrea Stigarll ◽  
Emmett Elam

Abstract Impacts of the quality of landscaping and percentage of tree cover on home prices were estimated from a sample of 75 home sales within the Melonie Park neighborhood in Lubbock, TX, from 2003 to 2005. Estimates were derived using a regression of house sale price on house characteristics, landscape quality, and tree cover. Homes that improved landscaping from average quality to good or excellent quality increased selling price by 5.7 and 10.8%, respectively. Approximately 30% of the increase in sale value was accounted for by added tree cover. The results show that each $1.00 invested in upgrading an average landscape to excellent quality returns $1.35 in added property value.


2016 ◽  
Vol 12 (21) ◽  
pp. 81
Author(s):  
Rodrigue Kotchi Orou ◽  
Gbombélé Soro ◽  
Drissa Tanina Soro ◽  
Abou Traoré ◽  
Rosine Marie N’guessan Fossou ◽  
...  

In the department of Agboville, farmers are interested in the using of groundwater to improve the performance of their crops. But they didn’t know the effects of this water on the crops without. The main objective of this study is to determine the quality of groundwater to prevent the risk of soil alkalinization and salinization in the department of Agboville. Hydrochemical analysis of 28 wells used for irrigation of crops was carried out. The dry residue (RS), the osmotic pressure (π), Sodium Absorption Ratio (SAR), the percentage of sodium exchange (ESP), salinity potential (SP), and the coefficient or the Kelly ratio (RK) were determined. Wilcox diagram was also applied for this study. The results show that groundwater department are soft and lightly mineralized wiht a low salinity. 75% of samples from groundwater haves low salinity and 25% have an average salinity. The values of the Salinity Potential (SP <5), Kelly Ratio (RK <1) and SAR (SAR <10 méq/L) show that all sampled groundwater are good qualities for agriculture. According to Wilcox diagram, groundwaters are excellent quality for agriculutre. The osmotic pressure (𝜋 ), the dry residue (RS) and the conductivity values 75% of the sampled waters are excellent quality and 25% average quality for agriculture. Groundwaters from the department of Agboville have a low risk of alkalizing and can be used in irrigation for most crops.


2019 ◽  
Vol 3 (2) ◽  
pp. 17-27
Author(s):  
Yunita Sari

Pulmonary tuberculosis (TB) is a chronic disease that can bring about the sufferer's self-stigma and also affect his quality of life. A number of studies report that living with TB has a negative influence on the quality of life of sufferers even with or without self-stigma. The purpose of this study was to identify the quality of life of TB patients who experienced self-stigma. This research is a descriptive study, sample were 31 pulmonary TB patients. Data was collected using a questionnaire. Data analyzed by using frequency distribution and percentage. The researcher first screened TB patients who experienced self-stigma. The results showed that 25 people (80.64%) respondents experienced mild self-stigma. A total of 9 respondents (36%) had a quality of life score in the good category and as many as 16 respondents (64%) had enough category with an average quality of life score is 56.57. While respondents who had moderate self-stigma were 6 people (19.36%) with a good quality of life score was 1 person (16.67%) and enough category quality of life score were 5 people (83.33%) with an average quality of life score is 49.92.


Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 796
Author(s):  
Mohamed A. Mattar ◽  
Said S. Soliman ◽  
Rashid S. Al-Obeed

A field experiment was conducted on date palm trees (Phoenix dactylifera ‘Succary’) cultivated on sandy loam soil from 2017 to 2018. This study investigated the effects of providing water of three different qualities, namely freshwater (FR) and two saline water sources: reclaimed wastewater (RW) and well-water (WE) applied through three irrigation levels representing 50% (I50), 100% (I100), and 150% (I150) of crop evapotranspiration (ETc), on the soil water and salt distribution patterns, yield, water productivity (WP), and fruit quality of the ′Succary′ date palm. The electrical conductivity (ECw) of FR, RW, and WE were 0.18, 2.06, and 3.94 dS m−1, respectively. Results showed that WE applied by the I150 treatment had the highest soil water content, followed by RW used in the I100 irrigation level and FR with I50, whereas the soil salt content was high for WE applied in the I50 level and low for FR applied by the I150 treatment. Deficit irrigation (I50) of date palms with either RW or WE reduced date yields on average 86 kg per tree, whereas the yield increased under over-irrigation (I150) with FR to 123.25 kg per tree. High WP values were observed in the I50 treatments with FR, RW, or WE (on average 1.82, 1.68, and 1.67 kg m−3, respectively), whereas the I150 treatment with each of the three water types showed the lowest WP values. Fruit weight and size were the lowest in the full irrigation (I100) with WE, whereas the I150 treatment with RW showed the highest values. There were no significant differences in either total soluble solids (TSS) or acidity values when the irrigation level decreased from 100% to 50% ETc. Compared with both I50 and I100 treatments, reduced values of both TSS and acidity were observed in the I150 treatment when ECw decreased from 3.94 to 0.18 dS m−1,. Fruit moisture content decreased with the application of saline irrigation water (i.e., RW or WE). Total sugar and non-reducing sugar contents in fruits were found to be decreased in the combination of RW and I150, whereas the 50% ETc irrigation level caused an increment in both parameters. These results suggest that the application of deficit irrigation to date palm trees grown in arid regions, either with FR or without it, can sufficiently maximize WP and improve the quality of fruits but negatively affects yield, especially when saline water is applied. The use of saline water for irrigation may negatively affect plants because of salt accumulation in the soil in the long run.


2015 ◽  
Vol 15 (2) ◽  
pp. 865-889 ◽  
Author(s):  
Ofer H. Azar

Abstract Research on the academic review process may help to improve research productivity. The article presents a model of the review process in a top journal, in which authors know their paper’s quality whereas referees obtain a noisy signal about quality. Increased signal noisiness, lower submission costs and more published papers all reduce the average quality of published papers in the journal. The model allows analyzing how the submission cost, the accuracy of referees and the number of published papers affect additional equilibrium characteristics. Implications of the model for journal policies are also discussed.


2012 ◽  
pp. 29-41
Author(s):  
Grassi Iacopo

At least since Akerlof (1970), asymmetric information in the case of experience goods has been a central issue in the economic literature. This paper studies regulation in markets where the quality of the experience good is never completely verifiable by consumers even after purchase. In the proposed model firms can decide the quality of the good: always producing a high quality good creates a positive externality in the market, but it causes an incentive to the firms to deviate and produce low quality goods. The main policy instrument for the government, in order to maximize Social Welfare, is to fix a minimum quality standard, but imposing a too high standard might, in some cases, lower the average quality of the good in the market.


2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Jordan R. Bass

Welcome to the first issue of the Journal of Amateur Sport (JAS)! First, I must thank everyone who played an integral role in the development of JAS. Drs. Mark Vermillion, Brian Gordon, Kyle Bunds, and Marion Hambrick were invaluable in their guidance as original members of the editorial and development team. The first editorial board has also played a large part in the excellent quality of the first issue that follows. We hope you enjoy this issue and look forward to receiving your submissions in the future!


Author(s):  
João M. de S. Miranda ◽  
Ítalo H. L. Cavalcante ◽  
Inez V. de M. Oliveira ◽  
Paulo R. C. Lopes ◽  
Joston S. de Assis

ABSTRACTThe production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The experimental design consisted of randomized blocks, with treatments distributed in a factorial arrangement 2 x 4, corresponding to apple cultivars (Eva and Princesa) and nitrogen doses (40; 80; 120 and 160 kg of N ha-1), with four replications and three plants in each plot. The fruit characteristics, such as fruit mass, skin color (luminosity, chromaticity, and colour angle), size (width and length), pulp firmness, titratable acidity (TA), soluble solids (SS) and the SS/TA ratio, were recorded. Nitrogen doses do not affect fruit quality of studied apple cultivars. The fruit quality attributes are different between apple cultivars: fruit firmness, SS/TA ratio, fruit mass and fruit diameter are superior for Princesa cultivar, while the fruit length for Eva cultivar is superior.


1988 ◽  
Vol 28 (6) ◽  
pp. 801 ◽  
Author(s):  
RBH Wills ◽  
S Sirivatanapa ◽  
Sirivatanapa Somjate

Postharvest vacuum infiltration of calcium into mature but unripe Hass and Fuerte avocados obtained from 80 growers in the 3 major growing districts in Australia over 2 seasons delayed the time to ripen compared with untreated fruit; but the magnitude of the response varied. Hass fruit from 66% of growers in the Murray Valley showed a significant delay in ripening and the average increase in fruit from all growers was 45% over that of untreated fruit. The response of Fuerte fruit was similar between districts, with an average delay in ripening time of about 30% and with fruit from 60% of growers having a significant increase. Hass fruit from North Queensland and northern New South Wales gave the lowest average delay in ripening of about 10% and an increased delay was significant for fruit from 25% of growers. The quality of ripe Hass fruit was not affected by calcium infiltration, whereas a slight decrease in the quality of Fuerte fruit was observed.


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