scholarly journals Potato Varieties Response to Soil Matric Potential Based Irrigation

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 352
Author(s):  
Jean-Pascal Matteau ◽  
Paul Célicourt ◽  
Guillaume Létourneau ◽  
Thiago Gumiere ◽  
Silvio J. Gumiere
Keyword(s):  
Management Practices ◽  
Irrigation System ◽  
Potato Crop ◽  
Soil Matric Potential ◽  
Matric Potential ◽  
Potato Varieties ◽  
Management Processes ◽  
Maturity Class ◽  
Potato Yields ◽  
Precision Irrigation

Potato is one of the most cropped plants worldwide. Hundreds of different varieties are cultivated only in North America. Potato growers usually crop multiple varieties on their farms to answer the market demands for potato’s specific physical properties. However, few pieces of information are available regarding the optimal management of irrigation across potato varieties. Knowing that modern potatoes share genetics similarities, the optimal irrigation comfort zone for the potato crop might be the same for different groups of varieties. This study evaluates the effect of precision irrigation thresholds on the potato yields of three varieties (Envol: very early, Kalmia: early, and Red Maria: mid-late) with different maturity classes. In a greenhouse, a soil matric potential sensor network used in combination with a precise irrigation system allows the identification of a common optimal precision irrigation threshold, allowing optimal yields for the three varieties. This paper presents the first identification of an optimal irrigation threshold, −15 kPa, shared by different potato varieties. The optimal irrigation threshold identified in this study is not dependent on the maturity class, plant height or tuber potential production. The determination of an optimal precision irrigation threshold will allow potato growers to adapt their farm management processes to integrate more sustainable water management practices as they will be able to irrigate a field with multiple varieties with the same threshold.

ESTIMATION OF CONSUMPTIVE USE OF POTATO CROP PIANTED UNDER DRIP IRRIGATION SYSTEM BY USING SWRT TECHNOLOGY

2020 ◽  
Vol 10 (1) ◽  
pp. 271-282
Author(s):  
J.N. Abedalrahman ◽  
R.J. Mansor ◽  
D.R. Abass
Keyword(s):  
Water Consumption ◽  
Drip Irrigation ◽  
Soil Depth ◽  
Irrigation System ◽  
Potato Crop ◽  
Block Design ◽  
Organic Fertilizer ◽  
Control Treatment ◽  
Drip Irrigation System ◽  
Spring Season

A field experiment was carried out in the field of the College of Agriculture / University of Wasit, located on longitude  45o   50o   33.5o   East and latitude 32o 29o 49.8o North, in Spring season of the agricultural season 2019, in order to estimate the water consumption of potato crop using SWRT technology and under the drip irrigation system. The experiment was designed according to Randomized Complete Block Design (RCBD) with three replications and four treatments that include of the SWRT treatment (the use of plastic films under the plant root area in an engineering style), and the treatment of vegetal fertilizer (using Petmos), organic fertilizer (sheep manure), and the control treatment . Potato tubers (Solanum tuberosum L.)  var. Burin was planted for spring season on 10/2/2019 at the soil depth of 5-10 cm. The highest reference water consumption for the potato crop during the season was calculated by Najeeb Kharufa, which was 663.03 mm. The highest actual water consumption for the potato crop during the season for the control treatment was 410.1 mm. The results showed increase in the values of the crop coefficient (Kc) in the stages of tubers formation and tubers filling stage as compared to the vegetative and ripening stages, ranged from 1.37-1.92 for the two stages of tubers formation and tubers filling. The SWRT treatment gave the highest water use efficiency during the season, was 3.46 kg m-3 .

BİLGİ YÖNETİMİ UYGULAMALARI KAPSAMINDA İNSAN KAYNAKLARI YÖNETİMİNDE MEYDANA GELEN DEĞİŞİMLER

2013 ◽  
Vol 1 (1) ◽  
pp. 83
Author(s):  
Ozan Büyükyılmaz
Keyword(s):  
Knowledge Management ◽  
Human Resources ◽  
Performance Management ◽  
Management Practices ◽  
Human Resources Management ◽  
Management Strategies ◽  
Resources Management ◽  
Management Philosophy ◽  
Management Processes

The development and expansion of knowledge management as an important management philosophy has a significant impact on human resources management as well as on organization as a whole. In this context, knowledge management processes have been used as a strategic tool within human resources management.Therefore, functions of human resources management must adapt itself to this change. The purpose of this study is to determine the role of human resources management in the management of knowledge and to reveal the effects of knowledge management practices on the functions of human resources byexamining the relationship between human resources and knowledge management. In this context, a theoretical investigation was conducted. It has been determined that significant changes occurred on the functions of human resources management such as selection and recruitment, performance management, remuneration and reward, training and development within the framework of the knowledge management strategies.

scholarly journals A robotic irrigation system for urban gardening and agriculture

2019 ◽  
Vol 50 (4) ◽  
pp. 198-207
Author(s):  
Ioannis Gravalos ◽  
Avgoustinos Avgousti ◽  
Theodoros Gialamas ◽  
Nikolaos Alfieris ◽  
Georgios Paschalidis
Keyword(s):  
Water Content ◽  
Food Systems ◽  
Management Practices ◽  
Irrigation System ◽  
Robotic System ◽  
Urban Gardening ◽  
Irrigation Treatments ◽  
Comparison Of The Results ◽  
Irrigation Technologies ◽  
Sustainable Irrigation

Water supply limits and continued population growth have intensified the search for measures to conserve water in urban gardening and agriculture. The efficiency of water use is depended on performance of the irrigation technologies and management practices. In this study, a robotic irrigation system was developed that consists of a moving bridge manipulator and a sensor-based platform. The manipulator constructed is partly using open-source components and software, and is easily reconfigurable and extendable. In combination to the sensor-based platform this custommade manipulator has the potential to monitor the soil water content (SWC) in real time. The irrigation robotic system was tested in an experimental soil tank. The total surface of the soil tank was divided by a raster into 18 equal quadrants. The water management for maintaining water content in the soil tank within tolerable lower limit (refill point) was based on three irrigation treatments: i) quadrants whose SWC is below the refill point are irrigated; ii) quadrants are irrigated only when the daily mean SWC of the tank is below the refill point and only for those whose actual SWC is lower than that limit; and iii) quadrants are irrigated every two days with constant amount of water. A comparison of the results of the three irrigation treatments showed that the second treatment gave less irrigation events and less applied water. Finally, we could conclude that the performance of the fabricated robotic system is appropriate and it could play an important role in achieving sustainable irrigation into urban food systems.

Experiments measuring the residual effects of nitrogen fertilizers

1965 ◽  
Vol 65 (2) ◽  
pp. 195-200 ◽  
Author(s):  
F. V. Widdowson ◽  
A. Penny
Keyword(s):  
Potato Crop ◽  
Nitrogen Fertilizers ◽  
Residual Effects ◽  
Wheat Crop ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Loam Soil ◽  
Potato Yields

The experiment testing N residues (made on a clay-loam soil) clearly showed that N applied for potatoes benefited the following wheat crop, but that N applied for wheat benefited the following potato crop little. There were no worth-while 1. An experiment on a clay-loam soil measured responses to three amounts of nitrogen on alternate crops of wheat and potatoes; these dressings were tested in all combinations with three rates of N applied 1 and 2 years previously. Nitrogen applied for potatoes consistently increased yields of following wheat. The residue from applying 1·5 cwt. N/acre for potatoes was equivalent to topdressing the wheat with 0·55 cwt. N/acre; the value of the residue was decreased by applying N to the wheat. Potato yields were increased little by applying N to the preceding wheat crop and the residues were of little significance when compared with the responses to new N. There was no gain from N applied 2 years previously for either crop.

Project, programme and portfolio maturity: a case study of Australian Federal Government

2014 ◽  
Vol 7 (2) ◽  
pp. 215-230 ◽  
Author(s):  
Michael Young ◽  
Raymond Young ◽  
Julio Romero Zapata
Keyword(s):  
Federal Government ◽  
Management Practices ◽  
Stakeholder Management ◽  
High Sensitivity ◽  
Development Planning ◽  
Government Agencies ◽  
Maturity Model ◽  
Australian Government ◽  
Content Type ◽  
Management Processes

Purpose – This paper aims to examine the notion of maturity assessment and maturity models more broadly and goes on to examine the findings from the assessments of project, programme and portfolio maturity undertaken across Australian Government agencies. Design/methodology/approach – A statistical analysis was performed to determine the level of maturity that best represents the Australian Federal Government agencies as a whole. The unit of analysis in this study is the agencies overall scores in each sub-model across the seven perspectives of the portfolio, programme and project management maturity model (P3M3) maturity model. Findings – This study has identified a number of interesting findings. First, the practices of project, programme and portfolio across the dataset practiced independently of each other. Second, benefits management and strategy alignment practices are generally poor across Australian Government agencies. Third, programme management practices are the most immature. Finally, the results showed a high sensitivity to the “generic attributes” of roles and responsibilities, experience, capability development, planning and estimating and scrutiny and review. Research limitations/implications – All data used in this analysis are secondary data collected from individual Australian Government agencies. The data were collected by accredited consultants following a common data collection method and using a standard template to ensure a consistent approach. Practical implications – The study poses some implications for practice, particularly given the context of Australian Federal Government agencies current plans and action to improve organisational maturity. The study suggests that benefits management processes at the project level and benefits management, governance and stakeholder management processes at the programme level should be an area of focus for improvement. Originality/value – This study is the first attempt to systematically review the data collected through such an assessment and in particular identify the findings and the implications at a whole of government level.

The impact of quality management practices on knowledge management processes: a study of a social security corporation in Jordan

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ata Al Shraah ◽  
Ayman Abu-Rumman ◽  
Faisal Al Madi ◽  
Fawwaz Ali Farhan Alhammad ◽  
Ayah Ahmad AlJboor
Keyword(s):  
Knowledge Management ◽  
Statistical Analysis ◽  
Quality Management ◽  
Social Security ◽  
Management Practices ◽  
Content Type ◽  
Quality Management Practices ◽  
Management Processes ◽  
The Impact ◽  
General Director

PurposeThis study aimed to investigate the impact of total quality practices on knowledge management (KM) processes across a Social Security Corporation (SSC) in Jordan and explore the best approach to improve KM processes using quality management.Design/methodology/approachThis study followed a quantitative methodology: a conceptual model was developed based on an extensive review of the related literature; an online survey was developed and distributed using the SSC's intranet; and 384 surveys were completed and used in the statistical analysis. The two-stage approach of structural equation modeling (SEM) was employed to analyze and interpret the data, and was used to validate the conceptual model of this research.FindingsBased on the statistical analysis it was found that six out of seven independent factors relating to quality management practices were confirmed to have a significant impact on the knowledge management processes (KMPs). Building upon the findings an agenda for improving KM processes using quality management is proposed.Originality/valueThis study was conducted in one organization namely the SSC because it is the largest public service organization in Jordan and offers compulsory services. The inclusion of other public organizations and companies may reflect different findings. Future research may collect data from other service industries to get a more comprehensive perspective from developing countries such as Jordan. Moreover, the population of this study included only the General Director, General Director Assistants, and Administrative Managers. Front-line employees were excluded from the data collection because the study was conducted solely from a managerial perspective.

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