Browsing by Author "Terzioglu, Omer"

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The Effects of Azote and Phosphor Fertilizer Applications in Natural Meadows on Botanic Composition and Quality
(Medwell online, 2009) Terzioglu, Omer; Arvasseyda, Osmetullah; Celebi, Seyda Zorer
This study was carried out between 2004-2005 in a natural meadow at Arusu village within the boundaries of Van province to investigate the effects of different doses of azote and phosphate on botanic quality of the meadow and quality of the grass. In this study, which was conducted as three repeating according to factorial trial design in random blocks, azote is applied in 0, 4, 8 and 16 kg day(-1) doses while, phosphor is in 0, 6 and 12 kg day(-1) doses. In the 1st year of trial, the effects of azote fertilizer on legume plants are found insignificant while, it was found to be significant on other criterions. In the 2nd year, its effect on all criterions studied was found to be significant. In the 1st year, the highest grain amount was found 4 kg day(-1) (88.3%); plant amounts belong to other families to be 16 kg day(-1) (17.3%) and raw protein amount to be 16 kg day(-1) (11.7%), which was obtained by azote applications. In the 2nd year, the highest legume amount was found to be 27.6%, plant amounts belong to other families to be 16.5% and raw protein amount to be 12.0% in parcels without azote application and in the places with azote application, grain amounts are determined from 16 kg day(-1) azote application (88.6%). In the 1st year of phosphor fertilizer trial, significant effects are found on plants belong to other families and insignificant effect found on other criterions studied. In the 2nd year of trial, insignificant effects are found on plants belong to other families and significant effects found on other criterions studied. In the year 2004, the highest plant ratio (15.9%) belongs to other families was obtained from parcels without phosphor application. In the 2nd year, the highest legume ratio (24.3%) was get from parcels with 6 kg day(-1) phosphor application, grain ratio (84.3%) in parcels without phosphor application and raw protein ratio (12.1%) was obtained from parcels with 12 kg day(-1) phosphor application.
Possibilities of Reducing the Use of Chemical Nitrogen in Vetch Plus Corn Production System
(Medwell online, 2009) Celebi, Seyda Zorer; Sahar, Korhan; Celebi, Rafet; Terzioglu, Omer
The study is carried out in Otluca Village bounding to city of Van in 2004-2005 years. In this study, it is aimed at investigating the possibilities of reducing amount of chemical nitrogen used in corn production which is planted before the vetch plant. In the 1st year of trial, in some part of the field, vetch is planted and its green herbage yield rates are determined. In the 2nd year of trial, planting activity is carried out in 2 trials as planting vetch both to the place it was previously planted and to where, it was not planted. In the trial, corn is applied chemical nitrogen in 5 different doses (0, 5, 10, 15 and 20 kg days(-1)). According to the results of the investigation, it is assigned that the corn, which is planted on the vetch, can be cultivated by using fertilizers with lower nitrogen. By the reduction in the amount of chemical nitrogen used, both the expenses will get lower and environmental pollution based on washing of fertiliser will be prevented. While, no difference is found on the corn planted after vetch that is applied 15 and 20 kg day(-1) nitrogen doses, in the corn, which is planted on the previously empty area, considerable difference is found between the doses. No considerable difference is found between 2 applications in terms of leaf, stem and ear ratios. The green and dry herbage yields at the corn, planted after vetch, vary between 5068.1 and 3033.3 and 1057.0 and 783.2 kg days(-1) respectively. However, these values at the corn, planted at the empty area in the preceding year, vary between 5134.4 and 2600.0 kg day(-1) and 1003.6 and 481.5 kg day(-1), respectively.