scholarly journals Wear Tolerance, Growth, and Quality of Seashore Paspalum in Response to Nitrogen and Potassium

HortScience ◽  
2001 ◽  
Vol 36 (4) ◽  
pp. 780-783 ◽  
Author(s):  
L.E. Trenholm ◽  
R.N. Carrow ◽  
R.R. Duncan
Keyword(s):  
Shoot Growth ◽  
Field Studies ◽  
Shoot Density ◽  
Visible Range ◽  
Seashore Paspalum ◽  
Fertility Treatments ◽  
Athletic Field ◽  
N Rates ◽  
Wear Tolerance

Damage from traffic can seriously injure athletic field turfgrass, although fertility regimes can influence wear tolerance. While excess nitrogen (N) can reduce wear tolerance, moderate N has improved tolerance and hastened recovery from injury. Potassium (K) may enhance wear tolerance through regulation of turgor potential. This research was undertaken to determine shoot growth and wear tolerance of seashore paspalum (Paspalum vaginatum Swartz) to N and K application. Field studies were conducted in 1998 at the Univ. of Georgia Experiment Station, Griffin. Grasses were established on U.S. Golf Association specification greens in 1996. Fertility treatments were applied at annual N rates of 196 and 392 kg·ha-1 and K rates of 92 and 392 kg·ha-1. The higher N rate increased wear tolerance, shoot growth, shoot density, visual quality, and color of the two ecotypes, AP 10 and AP 14, but reduced their visible range spectral reflectance, indicating greater absorption of photosynthetically active radiation (PAR). Measured responses to K were minimal and no enhancement of wear tolerance in response to K treatment was noted.

EFFECT OF SOME NATURAL ACTIVATORS ON GROWTH AND QUALITY OF SEASHORE PASPALUM TURF

2015 ◽  
Vol 2 (1) ◽  
pp. 149-156
Author(s):  
Boshra El-Sayed ◽  
Tarek Noor El-Deen ◽  
Magda Ahmed ◽  
Sayed Shahin
Keyword(s):  
Seashore Paspalum

Operations Research on the Female Village-Based Family Planning Worker Program of Pakistan

1998 ◽  
Vol 18 (3) ◽  
pp. 283-305
Author(s):  
Louisiana Lush ◽  
George P. Cernada ◽  
A. K. Ubaidur Rob ◽  
Mohammed Shafiq Arif ◽  
Minhaj Ul Haque ◽  
...  
Keyword(s):  
Family Planning ◽  
Operations Research ◽  
Technical Assistance ◽  
Field Studies ◽  
Family Planning Services ◽  
Training And Supervision ◽  
The Government ◽  
And Training ◽  
Broad Program

This article presents the results of a number of operations research studies (OR) of family planning services provided by a new cadre of female village-based family planning workers in Punjab Province, Pakistan. This cadre of workers, recruited nationwide, have been trained to visit women in their villages to provide information and family planning services. The studies were conducted as part of a broad program of technical assistance to the Government of Pakistan. Surveys investigated the quality of their training as well as attitudes among clients to the new program. They found that the program is developing well but there is room for improvement, particularly in counseling and training. Additional field studies are ongoing and recommendations for change have been incorporated in training and supervision. The program is expanding on a national scale.

scholarly journals The Use of Biological Indices for the Assessment of the River Quality (Ruda River, Poland)

2017 ◽  
Vol 24 (2) ◽  
pp. 285-298 ◽  
Author(s):  
Aneta Spyra ◽  
Justyna Kubicka ◽  
Małgorzata Strzelec
Keyword(s):  
Water Quality ◽  
Benthic Invertebrates ◽  
Ecological Status ◽  
Field Studies ◽  
Human Pressure ◽  
Dam Reservoir ◽  
River Quality ◽  
Water Field ◽  
Study Sites

AbstractRecognition of the deteriorating conditions of rivers worldwide has called for increased efforts to improve the ecological quality of impacted river systems. This is particularly important in areas that have suffered from a significant impact of human pressure on the ecological status of water. Field studies were conducted in the Ruda River in an area that had undergone anthropogenic disturbances. The objectives of our survey were to test the biological metrics based on benthic macroinvertebrates at four study sites. Spring and autumn surveys of benthic invertebrates indicated that based on the BMWP and BMWP(PL) indices, water quality was higher in comparison with the value of Multimetric index at all of the sites that were studied. Our results revealed that the water quality was higher at the study sites that are located above the dam reservoir based on both the chemical and biological parameters. This study also indicated that both spring and autumn constitute appropriate periods for carrying out monitoring studies. The values of multimeric index indicated the same water quality (except for site 1) in both sampling periods. Anthropogenic transformations of a riverbed influence the flora and fauna and affect the ecological status of rivers.

Dependence of Film Thickness on Properties of Al Doped ZnO Thin Films

2011 ◽  
Vol 194-196 ◽  
pp. 2305-2311
Author(s):  
Ying Ge Yang ◽  
Dong Mei Zeng ◽  
Hai Zhou ◽  
Wen Ran Feng ◽  
Shan Lu ◽  
...  
Keyword(s):  
Thin Films ◽  
Film Thickness ◽  
Electrical Parameter ◽  
Substrate Surface ◽  
Rf Magnetron Sputtering ◽  
Thickness Effect ◽  
Visible Range ◽  
Glass Substrates ◽  
Doped Zno

In this study high quality of Al doped ZnO (ZAO) thin films were prepared by RF magnetron sputtering on glass substrates at room temperature in order to study the thickness effect upon their structure, electrical and optical properties. XRD results show that the films are polycrystalline and with strongly preferred (002) orientation perpendicular to substrate surface whatever the thickness is. The crystallite size was calculated by Williamson-Hall method, while it increases as the film thickness increased. The lattice stress is mainly caused by the growth process. Hall measurements revealed electrical parameter very dependent upon thickness when the thickness of ZAO film is lower than 700 nm. The resistivity decreased and the carrier concentration and Hall mobility increases as the film thickness increased. When film thickness becomes larger, only a little change in the above properties was observed. All the films have high transmittance above 90% in visible range. Red shift of the absorption edge was observed as thickness increased. The optical energy bandgap decreased from 3.41eV to 3.30 eV with the increase of film thickness.

N credit of soybean to a following corn crop in central Ontario

1998 ◽  
Vol 78 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Wu Ding ◽  
D. J. Hume ◽  
T. J. Vyn ◽  
E. G. Beauchamp
Keyword(s):  
Field Studies ◽  
Fertilizer N ◽  
Quadratic Regression ◽  
Corn Crop ◽  
Glycine Max L ◽  
Second Year ◽  
Yield Responses ◽  
N Rates ◽  
Key Words Nitrogen ◽  
Corn Grain

Field studies were conducted to determine the nitrogen (N) fertilizer replacement value (NFRV) when soybean (Glycine max [L.] Merrill) preceded corn (Zea mays L.) in the rotation (S-C), compared to corn preceding corn (C-C). Large, replicated blocks of soybean and corn were established in 1993 and 1994 near Elora, Ontario. In the following year, each large block was subdivided into smaller plots. Fertilizer N was applied at six rates from 0 to 200 kg N ha−1 to the second-year corn crop. Corn grain yield responses to fertilizer N were fitted by quadratic regression. Maximum economic rate of N was calculated for each crop sequence and NFRV's were determined. Corn yields were consistently higher when grown after soybean (S-C) than after corn (C-C). Maximum corn yields were 10.4 and 12.3 Mg ha−1 in 1994 and 1995, respectively. NFRVs for S-C, compared to C-C, were 41 and 59 kg N ha−1 in the two years. As a result of these studies and numerous other experiments, recommended fertilizer N rates have been changed to 30 kg N ha−1 less for S-C than for C-C in central Ontario. Key words: Nitrogen credit, corn, soybean, fertilizer N, replacement value, crop rotation

scholarly journals Kualitas Pelayanan Izin Mendirikan Bangunan (IMB) Di Dinas Penanaman Modal Pelayanan Terpadu Satu Pintu (DPMPTSP) Kabupaten Ciamis

2019 ◽  
Vol 2 (2) ◽  
pp. 100
Author(s):  
Gina Sofia Rahman ◽  
Herijanto Bekti ◽  
M.D Enjat Munajat
Keyword(s):  
Service Quality ◽  
Human Resources ◽  
Field Studies ◽  
Integrated Services ◽  
Building Construction ◽  
Online Service ◽  
Library Studies ◽  
One Stop ◽  
Construction Permit

AbstrakPenelitian ini membahas tentang Kualitas Pelayanan Izin Mendirikan Bangunan (IMB) di Dinas Penanaman Modal Pelayanan Terpadu Satu Pintu (DPMPTSP) Kabupaten Ciamis, dengan menggunakan teori servqual dari Zeithaml mengukur 5 dimensi, yaitu Tangible, Reliabillity, Assurance, responsiveness dan Empathy. Penelitian ini merupakan penelitian jenis kualitatif dengan tekhnik pengumpulan data dengan menggunakan studi kepustakaan, dan studi lapangan berupa observasi dan wawancara dengan 6 informan yaitu, Kepala DPMPTSP, Kabid Perizinan, Kabid Pengaduan dan Advokasi, Petugas Frontliner, Kabid Kepegawaian dan Pemohon Perzinan IMB.Berdasarkan hasil penelitian, Kualitas Pelayanan di DPMPTSP Kabupaten Ciamis masih belum berjalan secara efektif dan efisien dikarenakan kurang nya SDM si bagian pelayanan perizinan DPMPTSP Kabupaten Ciamis, kurangnya kemampuan petugas dan sarana untuk menunjang online service. Kata kunci : Kualitas Pelayanan, Izin Mendirikan Bangunan, Servqual.AbstractThis study discusses the Quality of Building Construction Permits (IMB) at the Ciamis District One-Stop Integrated Services Investment Office (DPMPTSP), using the servqual theory from Zeithaml to measure 5 dimensions, namely Tangible, Reliabillity, Assurance, Responsiveness and Empathy. This research is a qualitative type of research with data collection techniques using library studies, and field studies in the form of observation and interviews with 6 informants namely, Head of DPMPTSP, Head of Licensing, Head of Complaints and Advocacy, Frontliner Officers, Head of Personnel and IMB Licensing Applicants. research, Service Quality in DPMPTSP Ciamis Regency still has not run effectively and efficiently because of the lack of human resources in the licensing service section of DPMPTSP in Ciamis Regency, lack of staff ability and means to support online services.Keywords: Service Quality, Building Construction Permit, Servqual.

scholarly journals Growth, Quality, and Foliar Iron Concentration of Kentucky Bluegrass Treated with Chelated Iron Sources

1991 ◽  
Vol 116 (5) ◽  
pp. 798-801 ◽  
Author(s):  
R.J. Cooper ◽  
L.A. Spokas
Keyword(s):  
Iron Concentration ◽  
Field Studies ◽  
Kentucky Bluegrass ◽  
Repeated Application ◽  
Iron Citrate ◽  
Fe Content ◽  
Turfgrass Quality ◽  
Growth Quality ◽  
Similar Growth

Supplemental Fe fertilization to improve turfgrass quality has become an increasingly common practice on many turfgrass areas. Field studies were conducted to evaluate the nutrient uptake, growth, and quality of Kentucky bluegrass (Pea pratensis L.) treated with chelated Fe sources. Iron sources were evaluated over 2 years at 1.5,3.0, and 6.0 kg Fe/ha applied in May, July, and September of each year. Turf treated with an iron orthophosphate citrate source (Fe-PC) exhibited more foliar growth than nontreated turf on seven of 11 sampling dates during the study. Iron citrate sources [Fe-C(EI) and Fe-C(T)] and Fe-DTPA applications resulted in similar growth rates, never stimulating growth more than the Fe-PC source and rarely increasing growth compared with nontreated turf. Increasing the Fe rate within source did not typically increase growth. Iron-treated turf exhibited quality superior to nontreated turf throughout the study with all sources performing comparably. Increasing Fe rate did not result in a corresponding increase in quality, due to greater phytotoxicity at higher rates. Although several sources produced notable phytotoxicity at 6.0 kg Fe/ha, repeated application did not decrease turfgrass density. Iron tissue content increased linearly with rate on four of five sampling dates during the study however, no source resulted in tissue Fe content significantly higher than other sources. Application of sources containing supplemental P and/or K did not increase tissue P or K content. Chemical names used: iron citrate (Fe-C); iron diethvlenetriamine pentaacetate (Fe-DTPA); iron orthophosphate citrate (Fe-PC).

scholarly journals Towards Smart City: Influence of Air Pollution on the Local Community of the Zabrze City in Surveys and Field Research

2018 ◽  
Vol 1 (1) ◽  
pp. 845-850
Author(s):  
Jolanta Ignac-Nowicka
Keyword(s):  
Quality Of Life ◽  
Air Pollution ◽  
Smart City ◽  
Local Community ◽  
Field Research ◽  
Field Studies ◽  
Toxic Gases ◽  
Accumulation Of Pollutants ◽  
The City

Abstract The results of the conducted pilot research indicated the basic local problems of the residents of Zabrze city. The purpose of the next research was to answer the question: how to improve the quality of life of residents in a city with significant air pollution. Activities aimed at this goal are inscribed in the idea of "smart city". The article presents the results of pilot measurements of air pollution with toxic gases in the Zabrze city in the Silesian agglomeration (Poland). Field studies at selected locations in the city concerned measurements of nitrogen dioxide, sulphur dioxide and carbon dioxide. The aim of these studies was to identify areas of the city with significant air pollution with toxic gases in order to plan further detailed research. Made measurements showed the appearance of the local problem of accumulation of pollutants in several areas of the city. The results obtained were compared with surveys conducted among residents of the Zabrze city. The aim of the survey was to examine the respondents' awareness of: the location of areas with noticeable air pollution and health problems resulting from air pollution in the place of residence. The article also presents a plan of possible actions for the city of Zabrze within the framework of the "smart city" idea to improve the quality of life of the local city community in conditions of increased emission of gas pollution in the city.

scholarly journals EFFECTS OF NITROGEN AND PHOSPHORUS ON THE YIELD AND CHEMICAL COMPOSITION OF MEADOW FOXTAIL

1975 ◽  
Vol 55 (4) ◽  
pp. 949-954 ◽  
Author(s):  
M. C. J. VAN ADRICHEM ◽  
J. N. TINGLE
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen And Phosphorus ◽  
N Application ◽  
Dry Matter Digestibility ◽  
P Content ◽  
Mn Content ◽  
N Rates

The effects of spring-applied nitrogen (0, 56, 112 and 224 kg/ha) and phosphorus (0 and 27.4 kg/ha) on the dry matter (DM) yield and forage quality of successive harvests of meadow foxtail (Alopecurus pratensis L.) were investigated. Nitrogen increased DM yield, crude protein, Cu, K and Zn contents and decreased P, Ca, Mg and Mn contents. Application of P in combination with N increased K content in the first cut and arrested the decline of P content due to N application in all cuts. The levels of dry matter digestibility and Cu declined in successive cuts whereas Mn content increased. At low N rates, Ca and Mg contents increased as the season advanced.

Sign in / Sign up

Export Citation Format

Share Document