scholarly journals Estimation of Growth Rates and Decomposition Analysis of Major Fruit Crops in Punjab, India

2021 ◽  
Vol 66 (3) ◽  
Author(s):  
Gurpreet Singh
Keyword(s):  
Agricultural Land ◽  
Decomposition Analysis ◽  
Fruit Production ◽  
Rate Data ◽  
Fruit Crops ◽  
Productivity Improvement ◽  
Intense Stimulus ◽  
Healthy Growth ◽  
Area Expansion ◽  
Over Time

Horticulture has been increasingly significant in supplying key elements to Punjabis’ diets. From 2010-11 to 2018-2019, the study examines the trends and variations in area, production, and yield of fruit crops in Punjab. The state’s trends in fruit area, production, and yield tend to be good for key fruits (citrus, mango, guava, and pear) in practically all areas. The decline in production of guava during the year 2016-17 and in production of pear during the year 2015-16 & 2016-17 was due to downward growth in area in during these years. Results of Cuddy-Della Valle Index indicates that fluctuations in production of major fruits i.e. constantly increasing over time (from 2010-2019); however, instability in their area mounted and reached to the highest levels for guava, mango and pear again in 2017-18 and 2018-19. While, disparity in pear production were the highest in 2015-16 followed by 2016-17. On the basis of growth rate data these can be ascribed to expansion in area to a great extent and remarkably in productivity improvement. During the study period, fruit production differs due to area in guava and pear, though productivity is not changed greatly. The results of decomposition analysis specify comparably intense stimulus of area expansion in production of guava and pear. Due to the scarcity of agricultural land, there are few opportunities to expand the area of fruit crops. As a result, improvements in fruit crop output levels are essential to maintain healthy growth in fruit output

scholarly journals Growth and Weight Status in Chinese Children and Their Association with Family Environments

Children ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 397
Author(s):  
Xu Tian ◽  
Hui Wang
Keyword(s):  
Weight Status ◽  
Family Income ◽  
Decomposition Analysis ◽  
Overweight And Obesity ◽  
Chinese Children ◽  
Nutrition Survey ◽  
Growth Status ◽  
Health And Nutrition ◽  
The Impact ◽  
Over Time

The growth status and weight status of Chinese children have experienced remarkable changes in the past decades. Using China Health and Nutrition Survey (CHNS) data, this paper examines the secular trends and disparity of the growth status and weight status in Chinese children and further investigates the impact of various family environments on children’s growth from 1991 to 2011. We found an increasing trend in standardized growth indicators (height, weight, and BMI), overweight, and obesity from 1991 to 2011. We also observed an increasing disparity in overweight and obesity over time. Family environments had a significant impact on children’s growth status and weight status. In particular, children that live in families with a small size, higher family income, better sanitary conditions, and with well-educated parents or overweight parents tended to be taller and heavier and have a higher BMI, lower risk of being underweight, and higher risk of exhibiting overweight and obesity. Further decomposition analysis showed that more than 70% of the disparity in standardized height, weight, and overweight and around 50% of the disparity in standardized BMI, underweight, and obesity could be attributed to heterogeneity in family environments. Moreover, the disparity associated with family environments tended to increase over time.

scholarly journals Zmiany w produkcji i eksporcie malin i wiśni w krajach Europy Południowej i Wschodniej i ich znaczenie dla produkcji w Polsce

2019 ◽  
Vol 19(34) (2) ◽  
pp. 65-76
Author(s):  
Sylwia Kierczyńska
Keyword(s):  
Small Area ◽  
Production Capacity ◽  
International Markets ◽  
Fruit Production ◽  
Southern Europe ◽  
Fruit Crops ◽  
Large Area ◽  
Production Potential ◽  
Export Volume ◽  
Lower Production

The aim of the study was to examine the changes in production and export of raspberries and sour cherries, which are the domain of Polish production on the international markets, in the countries of Eastern and Southern Europe during the 2006-2017. There was used data from Faostat database for the analysis of fruit production, and from Comtrade database for the analysis of export volume. Study points to the development of production and an increase in the export of raspberries in countries with a smaller area of cultivation of this fruit crops and stability in countries with a large area of crops of raspberries. In the case of sour cherries, in most countries, both large and small area plantings, production potential, and volume of production of fruit of this species declined. The export of sour cherries increased particularly from countries with less potential in the production of sour cherries. The development of the production and export of raspberries from countries with lower production capacity may in the future be competition for Poland on the international markets.

scholarly journals Self-Dual Stochastic Production Frontiers and Decomposition of Output Growth: The Case of Olive-Growing Farms in Greece

2001 ◽  
Vol 30 (2) ◽  
pp. 168-178 ◽  
Author(s):  
Giannis Karagiannis ◽  
Vangelis Tzouvelekas
Keyword(s):  
Size Effect ◽  
Technical Change ◽  
Decomposition Analysis ◽  
Output Growth ◽  
Use Of Self ◽  
Production Frontier ◽  
Tfp Growth ◽  
Stochastic Production ◽  
Allocative Inefficiency ◽  
Over Time

This paper provides a decomposition of output growth among olive-growing farms in Greece during the period 1987–1993 by integrating Bauer's (1990) and Bravo-Ureta and Rieger's (1991) approaches. The proposed methodology is based on the use of self-dual production frontier functions. Output growth is attributed to the size effect, technical change, changes in technical and input allocative inefficiency, and the scale effect. Empirical results indicate that the scale and the input allocative inefficiency effects, which were not taken into account in previous studies on output growth decomposition analysis, have caused a 7.3% slowdown and a 11.0% increase in output growth, respectively. Technical change was found to be the main source of TFP growth while both technical and input allocative inefficiency decreased over time. Still though, a 56.5% of output growth is attributed to input growth.

Phosphorus chemical changes under soils over a period of agricultural intensification

2020 ◽  
Author(s):  
Andrew Tweedie ◽  
Philip M. Haygarth ◽  
Anthony Edwards ◽  
Allan Lilly ◽  
Nikki Baggaley ◽  
...  
Keyword(s):  
Land Use ◽  
Agricultural Intensification ◽  
Agricultural Land ◽  
Ammonium Oxalate ◽  
Water Extraction ◽  
Nutrient Concentrations ◽  
Agricultural Land Use ◽  
Organic P ◽  
P Fertilizer ◽  
Over Time

<p>The use of phosphorus (P) fertilizer has been one of the defining contributors to productive agriculture since the green revolution during the middle of the last century. However, these increased yields have come at the cost of dependency upon the declining resources of P rock reserves and eutrophication of water bodies downstream. In this context, it is important to understand the long-term effects of these P fertilizer additions on soil chemistry over ~50 years in order explain past and current patterns in fertilizer usage and so to better inform future soil management.</p><p>We tested the hypothesis that phosphorus forms and availability in mixed use (arable and grazed) agricultural soil have changed over a period of 50 to 80 years of agricultural intensification. Spatially matched samples of soil from 34 agricultural sites in North East (NE) Scotland were collected at two timepoints. The first samples were taken between 1951 and 1981 and in all cases the resampling took place in the autumn of 2017. The soils sampled were representative of agricultural soils in NE Scotland.</p><p>The hypothesis was tested by employing a range of soil tests on the ‘old’ and ‘new’ time points.  These included water extraction for inorganic and organic P, nitrate and ammonium and dissolved organic carbon, acid ammonium oxalate extraction to investigate the soil P exchange complex and NaOH-EDTA extraction as a strong alkaline extractant which preserves organic P forms. Analysis by <sup>31</sup>P NMR was conducted on the NaOH-EDTA extracts from 5 pairs of samples, to investigate the organic P chemistry of in greater detail.</p><p>Phosphorus concentrations for stronger extractants (NaOH-EDTA, acid ammonium oxalate) did not increase significantly (P<0.05) over time. However, water extraction results showed increases in total P (P<0.01) and inorganic P but decreases in organic P. Additionally, analysis by <sup>31</sup>P NMR detected changes between timepoints in α-glycero-phosphate and pyrophosphate.</p><p>These results indicate that differences in the various chemical forms of P present in soil between the timepoints can be detected many decades apart. This indicates changes in the functioning of the P cycle in these soils under intensive agricultural land use over time. Knowledge of the P-cycling response of soils under agricultural land-use over decades provides an opportunity to understand changes in soil nutrient concentrations, balances and availability and inform studies seeking to improve the sustainable management of soil fertility.</p>

Evaluation of spatiotemporal imputations for fishing catch rate standardization

2017 ◽  
Vol 74 (9) ◽  
pp. 1348-1361
Author(s):  
Ross J. Marriott ◽  
Berwin A. Turlach ◽  
Kevin Murray ◽  
David V. Fairclough
Keyword(s):  
High Growth ◽  
Catch Rate ◽  
Commercial Fishing ◽  
Data Sets ◽  
Rate Data ◽  
Fishing Activity ◽  
Fish Stocks ◽  
Base Method ◽  
Catch Rates ◽  
Over Time

As commercial fishing activity shifts to target different grounds over time, spatial gaps can be created in catch rate data, leading to biases in derived indices of fish abundance. Imputation has been shown to reduce such biases. In this study, the relative performance of several imputation methods was assessed using simulated catch rate data sets. Simulations were carried out for three fish stocks targeted by a commercial hook-and-line fishery off the southwestern coast of Australia: snapper (Chrysophrys auratus), West Australian dhufish (Glaucosoma hebraicum), and baldchin groper (Choerodon rubescens). For high-growth scenarios, the mean squared errors (MSEs) of geometric and linear imputations were lower, indicating higher accuracy and precision than that for base method (constant value) imputations. For low-growth scenarios, the lowest MSEs were achieved for base method imputations. However, for the final standardized and imputed abundance indices, the base method index consistently demonstrated the largest biases. Our results demonstrate the importance of selecting an appropriate imputation method when standardizing catch rates from a commercial fishery that has changed its spatial pattern of fishing over time.

scholarly journals Soil Suitability for Apple (Malus domestica) Cultivation within the Borders of the Municipality of Bužim

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
Mirsad Ičanović ◽  
Husnija Kudić ◽  
Mihajlo Marković
Keyword(s):  
Soil Erosion ◽  
Malus Domestica ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Fruit Production ◽  
Agricultural Producers ◽  
Soil Response ◽  
Constraint Factors ◽  
Apple Production

The consequences of improper land management are long-term, inadequate for agricultural production, and reflected through the loss of land, reduced yields, soil erosion, etc. In order to determine the optimal role or suitability of the land for apple cultivation within the Bužim municipality, a survey was conducted according to the FAO method of AEZ (FAO, 1976), and based on the obtained results, an assessment of the suitability of the land for apple cultivation was carried out. It was found that a significant land portion of the total of 13,026.27 ha agricultural land within the Municipality of Bužim is suitable for fruit production marked from S1 to N suitability class. Thus, the areas with the best graded class S1 cover only 1.23% or 159.52 ha, the S2 class occupies 5.51% (717.24 ha), the S3 class occupies 2.29% (298.24 ha). However, the largest areas are marked as the unfavourable N-class with 36.68% (4,772.60 ha). It is evident that pre-existing conditions for apple production within the municipality do exist. With the implementation of the necessary measures of soil/ land regulation, education of agricultural producers, and mindfulness of constraint factors hindering intensive production such as terrain slope, depth, rockiness and soil response, progress in production can be made.

scholarly journals Trends and Contributing Factors of the Change of HIV Prevalence Over Time Among Reproductive Age Group Women in Ethiopia Evidenced by Ethiopian Demographic and Health Survey (EDHS) Data: a Cross-sectional Study: Multivariate Decomposition Analysis.

2021 ◽  
Author(s):  
Yilkal Negesse ◽  
Dereje Alemayehu ◽  
Melsew Setegn ◽  
Abebaw Addisu ◽  
Wondimagegn Wondimu ◽  
...  
Keyword(s):  
Behavioral Change ◽  
Decomposition Analysis ◽  
Hiv Prevalence ◽  
Reproductive Age ◽  
Age Group ◽  
Contributing Factors ◽  
Change Over Time ◽  
The World ◽  
Over Time ◽  
Reproductive Age Group

Abstract Background: Human immunodeficiency virus remains the leading cause of morbidity and mortality throughout the world. At the beginning of the epidemic, around 76.1 million people were infected and 32 million people died from AIDS-related illnesses in the world. Sub-Saharan Africa regions are the most affected regions and accounted for 67% of HIV infections worldwide, and 72% of the world’s AIDS-related deaths.Objective: To show trends and contributing factors for the change of HIV prevalence over time among reproductive age group women in Ethiopia.Methods: This study was conducted based on Ethiopian Demographic and Health Surveys data. A total of 10423 in 2005, 15153 in 2011, and 14159 in 2016 women were involved in the study. Multivariate decomposition analysis was performed using the mvdcmp Stata package to identify the contributing factors of change of HIV prevalence over time. The 95% confidence interval was used for the test of significance. Results: This study showed that 90.4 % of the change in HIV prevalence over time was attributable to behavioral change over time, particularly in women who were rural residents and not exposed to media. The behavioral change of women who live in rural areas was the major factor for the decline of HIV for the last ten years. The behavioral change of women who hadn’t exposure to media contributed 98.4% to the decline of HIV prevalence over the past ten years.Conclusion: The prevalence of HIV among reproductive age group women in Ethiopia was significantly declined over the last ten years and the decline was due to behavioral change over time. The major factor for the reduction of HIV prevalence overtime was the behavioral change of rural resident women. Therefore Ethiopian government should primarily focus on the strengthening and scaling up of behavioral change packages related to HIV prevention and control methods.

scholarly journals Greenhouse cultivation of fruit crops with special reference to India: An overview

2020 ◽  
Vol 12 (2) ◽  
pp. 252-260
Author(s):  
Rajkumar Jat ◽  
Vijay P. Singh ◽  
Virendra Kumar
Keyword(s):  
Land Tenure ◽  
Fruit Production ◽  
Fruit Crops ◽  
Traditional System ◽  
Fruit Cultivation ◽  
National Productivity ◽  
Fruit Growing ◽  
Cultivation Technology ◽  
Greenhouse Cultivation ◽  
Quality Production

India is facing various challenges in fruit cultivation viz., climate change, increasing pressure on natural resources, decreasing land tenure with the ever-increasing population. Besides this, the demand for quality fruit is also on the rise as people are now more aware of a nutritious and healthy diet. The quality with higher production is difficult with the traditional system of cultivation and requires a more scientific approach in cultivation. Greenhouse cultivation technology can enhance quality and quantity both. This technology is required to convert some portion of the present 6.5 million ha of the fruit-growing area to increase national productivity and product quality. The purpose of greenhouse cultivation is to grow crops by altering the micro-environment surrounding the crop so that the plant performs maximum to its genetic potential. It also increases the yield, improves the quality and stability of production and makes commodities available when there is no outdoor production. China is the world leader in greenhouse fruit production with the largest area under this technology. In India, greenhouse fruit cultivation is in its infancy as the only strawberry is commercially being grown under greenhouses. However, in fluctuating environmental conditions and losses in fruit crops due to various biotic and abiotic stresses, protecting the fruit crops for the off-season, quality and higher production will be a necessity in future. Keeping in view the low productivity of fruit crops in India and future needs of round the year quality production, an overview of work and cultivation scenario on this aspect is discussed in this paper.

scholarly journals YIELDS AND FRUIT PRODUCTION PATTERNS OF ELEVEN EGGPLANT CULTIVARS

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 515C-515
Author(s):  
Brian A. Kahn ◽  
Mark E. Payton
Keyword(s):  
Field Study ◽  
Fruit Quality ◽  
Solanum Melongena ◽  
Fruit Production ◽  
Fruit Weight ◽  
Fruit Number ◽  
Two Factors ◽  
Marketable Fruit ◽  
Black Beauty ◽  
Over Time

Eggplants (Solanum melongena L.) were grown from transplants in a field study at Bixby, Okla., in 2005. Plants were harvested twice a week for 7 weeks. Data were taken from 3 individual plants per plot × 11 cultivars × 3 replications. The open-pollinated `Black Beauty' was inferior to the hybrids for yield and fruit quality. Patterns of cumulative percent marketable fruit number did not differ for 3 of the 4 cultivars producing the numerically highest (not always statistically highest) marketable fruit weights per plant (`Classic', `Nadia', and `Santana'). `Dusky' was the exception; fruit number peaked relatively early, but it still totaled among the highest for marketable fruit weight per plant. This might be considered an efficient fruiting pattern. Apart from `Dusky', a relatively high cumulative percent marketable fruit number throughout the season tended to be associated with an intermediate to low marketable fruit weight per plant. Two factors usually were responsible for this pattern: relatively low average marketable fruit weight, or high cull production. Despite significant differences in individual marketable fruiting patterns and average fruit weights, one relatively simple curvilinear model gave an excellent estimation of total and marketable eggplant fruit production (respectively) over time. The model was pct = 1/(1+exp(-(a+b*day))), where pct = estimated cumulative percent based on number of fruit, a = intercept, and b = slope.

scholarly journals Historical Transition of a Farming System towards Industrialization: A Danish Agricultural Case Study Comparing Sustainability in the 1840s and 2019

2021 ◽  
Vol 13 (22) ◽  
pp. 12926
Author(s):  
Nele Lohrum ◽  
Morten Graversgaard ◽  
Chris Kjeldsen
Keyword(s):  
Fossil Fuels ◽  
Agricultural Land ◽  
Farming Systems ◽  
Farming System ◽  
System Level ◽  
High Productivity ◽  
Historical Transition ◽  
Farm System ◽  
Over Time

A Danish pre-industrial farming system is reconstructed and compared to its modern industrialized farming system equivalent to evaluate agricultural performance in a sustainability perspective. The investigated Danish farm system and its contributing elements have undergone significant transformations. The intensity of contemporary agriculture shows that high productivity levels have been achieved by increasing the input of energy using modern machinery. At the same time, the energy efficiency (calculations based on energetic indicators) diminishes over time as the degree of dependence on fossil fuels increases. The results from this study show significant changes in the farming system, specifically inputs from agricultural land use, livestock, and energy systems. From being highly circular, the system changed to being a clear linear farming system with highly increased productivity but less efficient at the same time, questioning the relationship between productivity and efficiency and resource utilization in modern farming systems. Through utilizing an agroecological historical approach by comparing system performance over time, the results offer opportunities to explore how agricultural farming systems evolve over time and help to describe the complexity of the system level in a sustainability perspective.

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