oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 2 )

2017 ( 3 )

2016 ( 2 )

2015 ( 16 )

Custom range...

Search Results: 1 - 10 of 284 matches for " Aftab Wajid "
All listed articles are free for downloading (OA Articles)
Page 1 /284
Display every page Item
Effect of Nitrogen on Yield and Oil Quality of Sunflower (Helianthus Annuus L.) Hybrids under Sub Humid Conditions of Pakistan  [PDF]
Wajid Nasim, Ashfaq Ahmad, Asghari Bano, Rabiu Olatinwo, Muhammad Usman, Tasneem Khaliq, Aftab Wajid, Hafiz Mohkum Hammad, Muhammad Mubeen, Muzzammil Hussain
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.32029
Abstract: Sunflower (Helianthus annuus L.) has emerged as an economically important crop in Pakistan due to its significant share in vegetable oil production. The plant metabolic processes require protein to increase the vegetative, reproductive growth and yield of the crop. The protein is wholly dependent upon the amount of nitrogen fertilization available for plant use. A two-year field study was conducted in 2008 and 2009. The objective was to determine the effect of different nitrogen (N) levels (N1 = 0 kg·ha–1, N2 = 60 kg·ha–1, N3 = 120 kg·ha–1, N4 = 180 kg·ha–1 and N5 = 240 kg·ha–1) on three sunflower hybrids (Hysun-33, Hysun-38 and Poineer-64A93) in agro-climatic conditions of Gujranwala, a sub-humid region in the centre of the Punjab province of Pakistan. A randomized complete block design split plot experiment was set-up with cultivars in the main plots and N levels in the subplots. Results showed that Hysun-38 gave maximum TDM (15815 kg·ha–1) and maximum grain yield (3389 kg·ha–1), while minimum TDM (14640 kg·ha–1) and grain yield (3125 kg·ha–1) was observed in Hysun-33. Among different N rates evaluated, N4 gave maximum TDM (17890 kg·ha–1) and grain yield (3809 kg·ha–1) compared to the other N rates. The maximum oil content (46.2%) was observed in Hysun-38 without application of N fertilizer (N1), while the minimum oil content (40.6%) was observed from N5 treatment. In conclusion, the application of 180 kg·ha–1 N to Hysun-38 provided the best combination for good yield in sunflower crop under the prevailing sub-humid conditions of Pakistan.
OILCROP-SUN Model Relevance for Evaluation of Nitrogen Management of Sunflower Hybrids in Sargodha, Punjab  [PDF]
Ashfaq Ahmad, Amjed Ali, Tasneem Khaliq, Syed Aftab Wajid, Zafar Iqbal, Muhammad Ibrahim, Hafiz Muhammad Rashad Javeed, Gerrit Hoogenboom
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.49212
Abstract:

The experiments were conducted to evaluate the performance of crop system (DSSAT) OILCROP-SUN model simulating growth & development and achene yield of sunflower hybrids in response to nitrogen under irrigated conditions in semi arid environment, Sargodha, Punjab. The model was evaluated with observed data collected in trials which were conducted during spring season in 2010 and 2011 in Sargodha, Punjab, Pakistan. Split plot design was used in layout of experiment with three replications. The hybrids (Hysun-33 & S-278) and N levels (0, 75, 150 and 225 kg.ha-1) were allotted in main and sub plots, respectively. The OILCROP-SUN model showed that the model was able to simulate growth and yield of sunflower with an average of 10.44 error% between observed and simulated achene yield (AY). The results of simulation analysis indicated that nitrogen rate of 150 kg.N.ha-1 (N3) produced the highest yield as compared to other treatments. Furthermore, the economic analysis through mean Gini Dominance also showed the dominance of this treatment compared to other treatment combinations. Thus management strategy consisting

Effect of Different Phosphorus Levels on Growth and Yield Performance of Lentil (Lens culinaris Medic)
Muhammad Maqsood,Muhammad Shahid Ibni Zamir,Riazat Ali,Aftab Wajid
Pakistan Journal of Biological Sciences , 2000,
Abstract: The investigation was conducted to determine the effect of different levels of phosphorus fertilizer on growth and yield performance of Lentil (Lens culinaris medic) CV. Masoor-85. Flowering and maturity of the crop was significantly affected by different rates of phosphorus. Maximum 1000-grain weight (19.38 g) was recorded with the application of 75 kg P2O5 ha-1. Application of 75 kg P2O5 resulted in higher yield of 1250 kg ha-1 .
Effect of Different Herbicides on Weed Population and Yield of Wheat (Triticum aestivum L.)
Aman Ullah Salarzai,M. Maqsood,Aftab Wajid,Naeem Shawani
Pakistan Journal of Biological Sciences , 1999,
Abstract: Evaluation of different Herbicides for the control of weeds in wheat was conducted at the area of Adaptive Research Model Farm Quetta, during the year 1997-98. Five different Herbicides were applied at recommended commercial rates. The highest 1000-grain weight (46.32 gm) was recorded with application of T6 (Banvel-M) which was statistically at par with T1 (Buctril-M) 45.25 gm 1000-grain weight. Weedicides significantly affected the weed population, weed biomass, and various yield components. The highest grain yield 5030 kg ha-1 was obtained in plots treated with Banvel-M close to its 5010 kg ha-1. Buctrial-M yield, as compared to control 4195 kg ha-1.
Growth and Yield Response of Basmati-385 (Oryza sativa L.) to ZnSO4 Application
Muhammad Maqsood,Muhammad Irshad,Syed Aftab Wajid,Abid Hussain
Pakistan Journal of Biological Sciences , 1999,
Abstract: The various levels of ZnSO4 included in the experiment were 0, 5, 10, 15 and 20 kg ha -1 applied at the time of pudding. The results showed that T3 (15 kg ZnSO4 ha -1) treatment produced maximum paddy yield (3.80 t ha -1) than all other treatments. This higher yield was attributed to increase number of fertile tillers m-2 and greater harvest index in this treatment as compared to other treatments. It was concluded that application of ZnSO4 @ 15 kg ha -1 at the time of puddling is the most economical to obtain higher yield under Faisalabad conditions.
Growth and Yield of Rice (Basmati-385) as Influenced by Different NP Levels
M. Maqsood,M. Naveed Akhtar,Aftab Wajid,Shakeel Ahmad
Journal of Biological Sciences , 2001,
Abstract: In a field trial the effect of different levels of nitrogen and phosphorus on growth and yield of rice (Basmati- 385) was studied at the Agronomic Research Area, University of Agriculture, Faisalabad. The results indicated that number of tillers per hill were not markedly influenced by the application of different levels of NP kg ha-1 and all the treated plots produced same per hill tillers as that of control. The treatment F4 (100-80 kg NP ha-1) produced maximum panicle bearing tillers and maximum normal kernels were produced by the treatment F5 (120-100 kg NP ha-1). The various levels of NP significantly influenced the 1000-grain weight, and paddy yield over the control. The treatment F5 (120-100 kg NP ha-1) is the most beneficial to obtain higher yield under the given conditions.
Impact of Nursery Seeding Density, Nitrogen, and Seedling Age on Yield and Yield Attributes of Fine Rice
Sarwar,Naeem; Maqsood,Muhammad; Aftab Wajid,Syed; Anwar-ul-Haq,Muhammad;
Chilean journal of agricultural research , 2011, DOI: 10.4067/S0718-58392011000300001
Abstract: producing vigorous seedlings and transplanting them at the appropriate age are the most important factors for obtaining high yield in rice (oryza sativa l.) paddy production. the impact of seeding densities, n, and seedling age was evaluated in this experiment after transplanting 10, 20, 30 and 40-d old seedlings raised by using different seeding rates (high and low) and n conditions (with and without) in the 2008 and 2009 rice growing seasons. the study revealed that 10-d-old nursery seedlings, irrespective of seeding densities and fertilizer application, showed higher yields and yield attributes (productive tillers, plant height, 1000-grain weight, and straw yield), while at later stages significant interaction was observed with nursery management. transplanting of 20-d older fertile seedlings grown with low seeding density at nursery-bed, resulted in a higher number of productive tillers m-2 (233.3, 227.3), straw yield (11.1, 10.7 t ha-1), and final yield (3.6, 3.4 t ha-1) in both years, 2008 and 2009, respectively. yield and yield attributes were significantly reduced by transplanting older seedlings grown at high seeding density and without n application at nursery-bed. minimum productive tillers (165.7, 133), straw yield (8.7, 8.1 t ha-1) and paddy yield (2.0, 1.8 t ha-1) were recorded with transplanting 40-d older seedlings grown at high seeding density and without n application. these findings support the use of young seedling in a system of rice intensification and illustrate that by making a minor additional investment to raise healthy and vigorous seedlings in nursery seed-bed, farmers can improve yields.
Impact of Nursery Seeding Density, Nitrogen, and Seedling Age on Yield and Yield Attributes of Fine Rice Impacto de la Densidad de Siembra en Vivero, Nitrógeno, y Edad de Plántula sobre Rendimiento y Atributos de Rendimiento de Arroz Fino
Naeem Sarwar,Muhammad Maqsood,Syed Aftab Wajid,Muhammad Anwar-ul-Haq
Chilean Journal of Agricultural Research , 2011,
Abstract: Producing vigorous seedlings and transplanting them at the appropriate age are the most important factors for obtaining high yield in rice (Oryza sativa L.) paddy production. The impact of seeding densities, N, and seedling age was evaluated in this experiment after transplanting 10, 20, 30 and 40-d old seedlings raised by using different seeding rates (high and low) and N conditions (with and without) in the 2008 and 2009 rice growing seasons. The study revealed that 10-d-old nursery seedlings, irrespective of seeding densities and fertilizer application, showed higher yields and yield attributes (productive tillers, plant height, 1000-grain weight, and straw yield), while at later stages significant interaction was observed with nursery management. Transplanting of 20-d older fertile seedlings grown with low seeding density at nursery-bed, resulted in a higher number of productive tillers m-2 (233.3, 227.3), straw yield (11.1, 10.7 t ha-1), and final yield (3.6, 3.4 t ha-1) in both years, 2008 and 2009, respectively. Yield and yield attributes were significantly reduced by transplanting older seedlings grown at high seeding density and without N application at nursery-bed. Minimum productive tillers (165.7, 133), straw yield (8.7, 8.1 t ha-1) and paddy yield (2.0, 1.8 t ha-1) were recorded with transplanting 40-d older seedlings grown at high seeding density and without N application. These findings support the use of young seedling in a system of rice intensification and illustrate that by making a minor additional investment to raise healthy and vigorous seedlings in nursery seed-bed, farmers can improve yields. La producción de plántulas vigorosas y el trasplante en la edad adecuada son los factores más importantes para obtener buenos rendimientos en arroz (Oryza sativa L.). El impacto de la siembra, densidades, N, y edad de las plántulas fue evaluado en este experimento después del trasplante de plántulas de 10, 20, 30 y 40 d cultivadas usando diferentes densidades de siembra (alta y baja) y condiciones de N (con y sin) en el cultivo del arroz temporadas 2008 y 2009. Independiente de la densidad de siembra y la aplicación de fertilizantes, plántulas de vivero de 10-d presentaron mayores rendimientos y componentes de rendimiento (tallos productivos, altura de planta, peso de 1000 granos, y rendimiento de paja), mientras que en etapas posteriores se observó una interacción significativa con el manejo de vivero. El trasplante de plántulas fértiles de 20 d cultivadas con baja densidad de siembra en la cama del vivero, se tradujo en un mayor número de
Speed Limit and Fatalities in the U.S.: Implication for Transportation Policy  [PDF]
Kashif Zaheer Malik, Ammar Aftab
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.75094
Abstract:
The paper attempts to investigate into the prevalent notion that higher speed limits lead to increase in fatalities using Vector Auto Regressive (VAR) model for bivariate time series. The paper used Fatality Analysis Reporting System (FARS) time series data set from 1975 to 2010. The paper is the first one to make use of Vector Autoregressive Model (VAR) on this time series dataset to study the potential dual causality between speed and fatalities. The results of the paper partially support the causation between speed limit and fatalities, thus, complementing the results of the existing literature relating speed limits and fatalities such as “Influence of speed limits on roadway safety in Indiana” [1], “Driver Speed Behavior on US Streets” [2], and “Speed Limit Laws in America: Economics, Politics and Geography” [3]. However, instead of determining causation through various regression models, the paper establishes the causality by inducing a speed shock and analyses its impact upon fatalities. The paper concludes that in states with higher per capita automobiles and limited public transportation facilities such as Georgia, a sudden increase in speed limit has an immediate and higher impact upon accident related deaths, whereas, in states with lower per capita automobiles and higher public transportation services such as New York, the sudden increase of speed limit has minimal impact on accident related fatalities.
Evaluation of Correlation between Acid Degree Value and Peroxide Value in Lipolysis of Control and Iron Fortified Caprine Milk Cheeses during 4 Months Storage  [PDF]
Aftab Siddique, Young W. Park
Open Journal of Animal Sciences (OJAS) , 2019, DOI: 10.4236/ojas.2019.91001
Abstract: Elevation of acid degree values (ADV) and peroxide value (POV) indicates deterioration of nutritional and sensory qualities of dairy products during storage. Iron fortification in bovine milk cheeses in relation to lipolytic parameters and their correlations have been studied, while no such studies have been reported on caprine milk cheeses. The objectives of this study were to evaluate levels of ADV and POV of iron fortified [regular ferrous sulfate (RFS) and large microencapsulated ferrous sulfate (LMFS)] goat milk Cheddar cheeses compared to those of non-fortified control cheese (CC) and their correlations. Three batches of 3 types (CC, RFS and LMFS added) of goat milk cheeses were manufactured and stored at two temperatures (4°C and -18°C) for 0, 2 and 4 months. Iron was supplemented to RFS and LMFS cheeses by 8.23 g and 9.03 g per 9 kg, respectively. ADV and POV were determined using standard methods of examining dairy products (Richardson, 1985) and AOCS (1975) procedures. Results showed that ADV values for CC, RFS and LMFS cheeses for 0 and 4 month storage at 4°C were: 0.67, 0.73, 0.64; 1.24, 1.78, 1.58, respectively, indicating significant (P < 0.05) elevations occurred in ADV for all three cheeses during 4 months storage. The cheese samples at 4 months storage showed significantly (P < 0.05) higher peroxide values compared to 0 and 2 month stored ones. The samples stored at refrigeration temperature (4°C) revealed slightly more lipid oxidation than those stored at frozen temperature (-18°C). Significant (P < 0.05) elevations in POV for all goat cheeses stored for 4 months and slight increases in POV at higher temperature implies that the longer time and higher temperature storage can elevate the rate of lipid oxidation in goat milk Cheddar cheeses. Correlations (r) between ADV and POV for the pooled data of three types of the caprine cheeses across storage periods were significant (P < 0.01), while r values of CC cheeses alone were negative. It was concluded that significant correlations exist between extents of lipolysis and lipid oxidation in the caprine milk Cheddar cheeses during 4 months storage.
Page 1 /284
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.