YIELD AND DISEASE TOLERANCE OF POTATO CULTIVARS GROWN UNDER CONVENTIONAL AND ORGANIC CULTURAL MANAGEMENT PRACTICES

2005 ◽  
pp. 79-84 ◽  
Author(s):  
A. Fiorillo ◽  
Y. Rouphael ◽  
M. Cardarelli ◽  
F. Saccardo ◽  
G. Colla ◽  
...  
2020 ◽  
Vol 130 ◽  
pp. 105047 ◽  
Author(s):  
Laura Armengot ◽  
Leone Ferrari ◽  
Joachim Milz ◽  
Fortunato Velásquez ◽  
Pierre Hohmann ◽  
...  

2020 ◽  
Vol 113 (3) ◽  
pp. 1243-1247
Author(s):  
Joanna B Bloese ◽  
Kevin M Goding ◽  
Larry D Godfrey

Abstract The tadpole shrimp [Triops longicaudatus (Leconte)] has emerged as a significant pest of rice grown in California in recent decades. The change in T. longicaudatus’ pest status has coincided with changes in cultural management of residual rice straw postharvest. Policy changes have reduced the postharvest burning of fields from nearly 95% to less than 10%, promoting increased use of winter flooding as a means of accelerating straw decomposition. Field and laboratory trials were conducted from 2015 to 2017 at the Rice Experiment Station in Biggs, CA and in greenhouses at the University of California (UC) Davis to evaluate the effects of burning, flooding, and a fallow control on T. longicaudatus population dynamics. Experiments demonstrated that burning of rice straw failed to suppress densities of hatching T. longicaudatus and actually had the reverse effect, causing a 51% increase in numbers hatching, perhaps as a result of burning triggering termination of multiyear T. longicaudatus egg dormancy. Winter flooding had no measurable effect on T. longicaudatus hatch. Thus, these changes in winter cultural practices do not appear to be responsible for the emergence of T. longicaudatus as a major rice pest.


2019 ◽  
Author(s):  
Umme Salma Sultana ◽  
Tarnima Warda Andalib ◽  
Mohd Ridzuan Darun

Malaysia is one of the countries which welcome expatriates from all over the world to fill the need for skilled employees. This paper provides an overview of how cultural divergence influence expatriates performance in Malaysia. The main purpose of this study is to identify the important issues which directly or indirectly, positively or negatively influence expatriate’s performance in day to day work. This study reviewed 55 papers related to cultural divergence, employee performance, cultural intelligence, and human resource management practices in Malaysia. The finding highlights that expatriates experience cultural clashes between foreign and local values, which pose direct influences on expatriates’ performance. This study contributes to the body of knowledge in the cross-cultural management field as well as practical implications to expatriating firms. Finally, this research is beneficial and informative, especially for Malaysian researchers and managers in International Human Resource Management (IHRM) field.


HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 430f-431
Author(s):  
Herbert D. Stiles

The Stiles bent fence (SBF) and single-sided shift trellis (SSST) are differently designed structures that function to isolate fruiting zones of summer-fruiting brambles on one side of the plant or row. The SBF and SSST are suited for use with cultivars that produce long, flexible, nonbranched canes. Summer pruning of stiff-caned, semi-erect types may encourage development of long, flexible lateral branches that are adaptable for training on these trellises; alternate-year cropping may be helpful where such pruning is necessary. The SSST operates on the same principles as our original single-sided trellis (SST), but the newer design is compatible with a broader range of commonly available construction materials. Construction plans will be published in a Virginia Agricultural Experiment Station Bulletin as soon as funds are made available. The SSST should allow greater manual harvest efficiency, more effective IPM, fewer yield losses to sunscald, compatibility with cultural management practices, lower costs of postharvest precooling, better condition of harvested fruit for maximum shelf life, and stronger prospects for machine harvesting of fresh-market brambles.


2007 ◽  
Vol 32 (4) ◽  
pp. 63-74 ◽  
Author(s):  
Nina Jacob

This paper explores the linkage between organizational structure and cross-cultural management. It suggests that a fluid and continuously evolving structure enables effective crosscultural management. In support of this proposition, the paper reports on the experience of one of the world's largest financial services corporations – a Swiss Bank. The bank adopted a different type of organizational structure for one of its units. This new structure was different from the traditional bureaucracy it had used throughout the 150 years of its existence. It was observed to be an emergent structure, evolving in response to the stimulants provided by its various cultural constituents. It was also flexible, allowing it to assimilate when necessary, the inputs provided by its diverse cultural constituents, and discard when necessary, the structural features which no longer served any useful purpose. This paper discusses and analyses the experience of Credit Suisse Private Banking's Project Copernicus in Singapore, (October 2000 – December 2001). The principal findings of this paper are: Traditional modes of organizational structure are not appropriate for the management of diversity. Fluid and amorphous organizational structures provide the context within which crosscultural management can be effected. There is a symbiotic relationship between organizational structure and organizational members' cultural heritage. The author had earlier highlighted (2005) the fact that current cross-cultural management research emphasises the need for multiculturalism. Multiculturalism is the management of subcultures within an entity like the nation-state. Organizational structures need to be designed keeping in mind the dynamics of interacting sub-cultures within a multicultural organization. An analysis of the case study embedded in this paper reveals that cross-cultural management is facilitated by: The co-evolution of organizational structure and management practices. In other words, organizational structure need not be durable as has traditionally been the case. Additionally, it need not precede the creation and operationalization of management practices. Allowing individual members' cultural heritage to influence the evolving nature of organizational structure. Thus a manager entering a multicultural organization would try and align himself⁄herself with the existing structure. Co-terminously, he⁄she would impact on the structure's design. The impact would have cultural underpinnings. Enacting an organizational structure that overtly takes into account the cultural conditioning of individual members. Thus two managers from different cultures experiencing difficulty in interacting with each other may both have to adapt and change in order to sresolve discord as well as to find a fit with the organization. Meanwhile, the amorphous nature of the organizational structure makes possible the improvisation that accompanies managers' attempts to find a fit.


2009 ◽  
Vol 86 (4) ◽  
pp. 405-409 ◽  
Author(s):  
R. J. Bryant ◽  
M. Anders ◽  
A. M. McClung

itsrj ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 280
Author(s):  
D. M. Park ◽  
J. L. Cisar ◽  
M. A. Fidanza ◽  
E. J. Nangle ◽  
G. H. Snyder ◽  
...  

2011 ◽  
Vol 91 (6) ◽  
pp. 1027-1036 ◽  
Author(s):  
Joanna Sciegienka ◽  
Elai Keren ◽  
Fabian Menalled

Sciegienka, J. K., Keren, E. N. and Menalled, F. D. 2011. Impact of root fragment dimension, weight, burial depth, and water regime on Cirsium arvense emergence and growth. Can. J. Plant Sci. 91: 1027–1036. Cirsium arvense is an aggressive, introduced, perennial invasive weed that flourishes in a wide variety of environments including conventional and organic agricultural systems as well as disturbed non-crop habitats. Even though much research has been conducted on the chemical, biological, and cultural management of C. arvense, less information is available on how pre-emergence factors affect its reproductive biology and growth. This research assessed the combined impact of root fragment size, root fragment biomass, burial depth, and water regime (a proxy of water availability) on C. arvenseemergence and growth in fallow conditions. In field experiments, root burial depth was the most important factor determining C. arvenseemergence and growth, with roots at the 10-cm depth having the greatest average emergence (51.2±2.0% in 2007 and 43.5±7.2% in 2008; mean±SEM) compared to roots at the 2 cm (8.9±7.4% in 2007 and 38.1±8.3% in 2008) or 20 cm (12.8±4.0% in 2007 and 17.6±2.7% in 2008) depth. In greenhouse experiments, water regime was the overriding variable determining C. arvense emergence as well as above-ground and below-ground biomass. These results could improve decision-aid models and enhance the efficacy of site-specific C. arvense management practices.


1990 ◽  
Vol 8 (4) ◽  
pp. 220-227 ◽  
Author(s):  
Edward F. Gilman

Abstract Cultural factors influencing root growth in the landscape or nursery include soil management, irrigation, fertilization, shoot pruning and root pruning. These affect root density, depth of penetration, spread, vertical distribution in the soil profile and mineral uptake. Root morphology varies widely among genera, species and individuals within a species. The distribution, length and weight of roots within the root ball of transplanted field-grown trees can be modified with cultural management practices. Growth of transplanted trees may be affected by these modifications. Root spread diameter increases at a rate of 0.9–2.4 m (36–96 in)/year following planting. From 1 to 10 years is required to replace the pre-transplant root system for trees transplanted from field nurseries. Root system in urban environments can be modified by cultural techniques which direct their growth.


HortScience ◽  
2005 ◽  
Vol 40 (5) ◽  
pp. 1493-1498 ◽  
Author(s):  
C.J. Rosen ◽  
V.A. Fritz ◽  
G.M. Gardner ◽  
S.S. Hecht ◽  
S.G. Carmella ◽  
...  

Glucosinolates are a class of nitrogen (N) and sulfur (S) containing compounds shown to have cancer-preventing properties in animal models and widely found in cruciferous plants. The overall objective of this study was to determine whether N and S fertility affects glucosinolate concentrations in cabbage (Brassica oleracea L. Capitata group). Field studies on a sandy soil low in available N and S were conducted over a 2-year period with both green (`Grand Slam') and red (`Vorox') cabbage cultivars. Treatments evaluated each year were the interactive effects of N (125 and 250 kg·ha–1) and S (0, and 110 kg·ha–1) fertilizer application. Yield of both cabbage cultivars increased with increasing N and S in the second year of the study, but not in the first. Tissue N concentrations in heads at harvest increased with N application and tissue S concentrations increased with S application. When S was not applied, tissue S decreased significantly as N rate increased, while N rate had no effect on tissue S concentrations when S was applied. The dominant glucosinolate detected in both cabbage cultivars was glucobrassicin, with indole forms accounting for about 80% of the total glucosinolates regardless of treatment. Tissue N was negatively correlated and tissue S and S to N ratio were positively correlated with total glucosinolate concentration, although all correlations were generally weak (r2 < 0.5). Total glucosinolates and glucobrassicin concentrations were maximized in both cultivars at the low N and high S application rates. Except for sinigrin in one of the 2 years, all glucosinolates detected were higher in Vorox than in `Grand Slam'. Based on these results, glucosinolates in cabbage can be manipulated by cultural management practices as well as genetics.


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