Browsing by Author "Arvas, O."

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Determination the Performance of Perennial Ryegrass (Lolium Perene L.) in a Sod Establishment With Biosolid
(Univ Namik Kemal, 2010) Celebi, S. Zorer; Arvas, O.; Celebi, R.; Yilmaz, I. H.
This study was carried out to determine the use of biosolid (sewage sludge) in a sod establishment and the performance of perennial ryegrass (Lolium perenne L.). Treatments were arranged using randomized complete-block design with three replications. The farmyard manure that was used as a control in this study, the biosolid at 3, 6, 9 and 12 kg/da doses were used as a treatment. In the study, criteria such as plant height, green grass yield, plant covered area, weed rate, color and turfgrass quality of perennial ryegrass were evaluated. At the first period of sod the establish plant height, green grass yield and plant-covered area were reached the highest values in the low doses of biosolid and control. In the further periods; higher values were determined where the high doses of biosolid were used. Color and turfgrass quality criteria give positive results in the high doses of biosolid and reached high values. Especially, during summer season in the plots amended with biosolid were give better result than manure. Results indicated that use of the biosolid as fertilizer in the sod establish can be more effective than the manure.
Effect of Addition of Secondary-Treated Domestic Sewage Sludge To Diammonium Phosphate Fertilizer on Element Content of Artificial Pasture Herbage and Their Availability in Soil
(Aloki Applied Ecological Research and Forensic inst Ltd, 2022) Arvas, O.; Celebi, S. Z.
Organic matter deficiency limits plant production in arid and semi-arid areas. Secondary treated sludge is an effective source of organic waste. The effect of sewage sludge in addition to diammonium phosphate (DAP) fertilizer on nutrient and metal concentrations of herbage and soil in an artificial pasture under arid and semi-arid condition was examined in this study. The pasture consisted of Onobrychis sativa (35%), Poterium sanguisorba (40%) and Agropyron elongatum (25%) mixture. A total of 150 kg ha-1 DAP was applied to all plots with sowing. Additionally, 30, 60 and 90 tonne ha-1 of sewage sludge was applied in a randomized block design. The addition of the sewage sludge increased P and K concentrations, however decreased B and Pb concentrations in the herbage significantly. Fe, Cu, Zn, Co, Se, Mo, Mn, Ni, Cr concentrations also decreased, but this change was not significant. The concentration of Cd in herbage increased with increasing sewage sludge doses. Sewage sludge improved pH, electrical conductivity and organic matter at two soil depths and increased N, P and K concentrations in both the topsoil and subsoil. The addition of domestic secondary treated sewage sludge could reduce the efficacy of some DAP-sourced metals.
The Effects of Nitrogen and Phosphorus Fertilizer Application on Herbage Yield of Natural Pastures
(2011) Celebi, S.Z.; Arvas, O.; Terzioglu, O.
This study was carried out in a natural pasture in Van province of Turkey between the years of 2004 and 2005 to determine the effects of nitrogen and phosphorus fertilization on herbage yield. The study was performed in randomized block with three replications. 0, 4, 8, 16 kg da-1 nitrogen and 0, 6, 12 kg da-1 phosphorus applications were examined. The effects of different nitrogen and phosphorus fertilizer applications on plant height, green herbage and crude protein yield were significant for both years. Depending on the increasing nitrogen and phosphorus applications, significant increases were in green herbage, hay and crude protein yields. According to results, differences between 8 and 16 kg da-1 doses of nitrogen and 6 and 12 kg da-1 doses of phosphorus applications were insignificant. In the first year, in terms of nitrogen applications, the highest green herbage, hay and crude protein yield (1423.1, 263.3 and 29.2 kg da-1) were obtained from 8 kgNda-1, in the second year, the highest values (1426.1, 602.7 and 67.8 kg da-1) were obtained from 16 kg N da-1 application. As for the phosphorus applications, in the first year, the highest green herbage yield was 1142.2 kg da-1 at the 6kg P205/da application, hay and crude protein yields (218.2, 23.1 kg da-1) were recorded from 12 kg P2 05/da application. In the second year, the highest green herbage, hay and crude protein yields were (1335.8, 549.6 and 66.1 kg da-1) determined at the 12 kg P205/da application. © Asian Network for Scientific Information.
The Effects of Secondary Treatment on Nodulation of Alfalfa (Medicago Sativa L.) and Nutrients Supply in Domestic Wastewater
(Aloki Applied Ecological Research and Forensic inst Ltd, 2022) Arvas, O.; Yagan, F.; Yesilova, A.
The use of domestic wastewater in irrigation is becoming widespread. The aim of this study was to determine the effect of Secondary Treated wastewater (STW) irrigation on alfalfa nodulation, agronomic parameters, exchangeable cations and heavy metals in soil and plant. Three levels of STW diluted with distilled water and distilled water were applied for 6 months with three replications in randomized plots in laboratory. Negative binomial regression was applied to model the overdispersion. Diluted STW reduced the total and active nodule number by at least 79.5% and 91.2%, respectively. Diluted STW decreased total biomass of alfalfa compared to distilled water. STW increased the EC and Mg ratios in the soil and the Na ratio in the soil, root and shoot. However, it did not affect the K and Ca ratios in the soil, root and shoot. Co, Ni, As and Pb uptake were inhibited in roots, however elements such as Fe, Cu, Mo, Mn, Al, Cr and Cd accumulated in high concentration in the root. Increasing Zn concentration in shoot may be attributed physiological selectiveness of the alfalfa. Consequently, the use of STW cannot be recommended in alfalfa irrigation as it could reduce the biomass and prevent nodulation.
Morphological Characterization of Orchardgrass (Dactylis Glomerata L.) Naturally Spread in Eastern Anatolia, Turkiye
(Pakistan Agricultural Scientists Forum, 2024) Arvas, O.; Nabhan, A.
Orchardgrass Dactylis glomerata L.) is a cold-resistant, perennial and one of the main forage species of meadows and pastures. A total of 9 morphological traits were considered for the morphological characterization of the orchardgrass, which is naturally distribusted in the flora of 43 different locations in 8 provinces of the Eastern Anatolia of Turkiye. According to the analysis of variance; significant differences were determined between genotypes in terms of the morphological traits examined. These differences resulted in a high degree of phenotypic variation. In addition, correlation coefficient analysis showed a significant (P<0.01) and positive relation between most of the traits examined. The highest correlation coefficient was between plant height and peduncle length (0.864**), flag leaf length and flag leaf width (0.765**), flag leaf length and panicle length (0.734**) The first five Principal components (PCA) explained 70.31 % of the total variation in orchardgrass genotypes. The highest plant height and maximum number of tillers, which are important for grass yield and reproduction, were determined in M75 (77.57 cm) and R163 (27.85 per/plant) respectively. The high morphological variation material.