Yazar "Gul, Ismail" seçeneğine göre listele

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    Effect of Crop Maturity Stages on Yield, Silage Chemical Composition and In vivo Digestibilities of the Maize, Sorghum and Sorghum-Sudangrass Hybrids Grown in Semi-Arid Conditions
    (Medwell Online, 2008) Gul, Ismail; Demirel, Ramazan; Kilicalp, Numan; Sumerli, Mehdi; Kilic, Hasan
    The effect of different harvesting times on some silage quality of maize, sorghum and sorghumxsudangrass hybrids grown as in a split plot design with 3 replicates during second crop in semi and condition were evaluated. In this research, whole plant silage chemical composition and DM digestibilities on different times, measured in vivo were determined. For this purpose, 2 maize (DK 711, TTM 815), 2 sorghum (Sucro sorgo 506, FS 5) arid 2 sorghum-sudangrass hybrids (P 988, Grazer N2) cultivars were harvested at 3 different maturity stages (mid-flowering-MF, milkline-ML and hard dough-HD). The chopped materials were ensilaged in 10 L anaerobic jars, for 60 days. Silage samples were dried (CP, FP, pH, ADF, NDF contents were measured) and incubated in fistulated 3 Holstein Friesian heifers for determining dry matter digestibility. Significant differences were found between plant cultivars and harvesting Stages for all investigated parameters. The dry matter yields varied between 12654.2 and 25340.1 kg ha(-1). The highest dry matter yield was obtained from Sucro Sorgo 506 with ML and HD. Dry matter content of silages were changed from 20.63% (in silage sorghum cv. FS 5) to 27.36% (in sorghum-sudangrass hybrids cv. Grazer N2), pH (3.84 in FS 5 and 3.98 in TTM 815), Fleig point (FP) (90.87 in TTM 815 arid 104.6 in Grazer N2), Crude Protein (CP) was 3.92% in GrazerN2 and 6.64% in FS 5, ADF was 44.56% in DK 711 arid 49.33% in SS 506, NDF was 59.56% in DK 711 and 65.70% in P 988, whereas in vivo DM digestibility at 12 h was 32.82% in SS 506 arid 38.91% in TTM 815. Crop maturity increased satistically significantly, silage DM varied from 20.43-25.92% and in vivo digestibility of DM at 12 h varied from 32.56-37.66%, however significantly decreased. ADF decreased from 50.17-42.56%, NDF decreased from 64.71-59.62%), WSC (Water Soluble Carbohyrates) increased from (24.59-30.24%). CP decreased from 5.59-5.05%. pH was between 3.78-4.10 arid Fleig point was between 94.66-97.58. These Values were not changed statistically, when crop maturity increased. Incubation periods were 0, 12, 24, 48 arid 72 11 for determining dry matter digestibility by using nylon bag technique. Silage NDF values were decreased from flowering to milkline stages. It was concluded that silages in vivo DM digestibility were increased with maturity at 12 h rumen incubation.
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    Effect of different previous crops and nitrogen rate on grain sorghum (Sorghum bicolor L. Moench)
    (Asian Journal Of Chemistry, 2008) Gul, Ismail
    The effect of previous crops (wheat, barley, lentil, Hungarian vetch and winter fallow) and different nitrogen rates (0, 120, 160, 200 and 240 kg N ha(-1)) on grain yield and yield components of grain sorghum (Sorghum bicolor L. Moench.) were examined under irrigated conditions in Diyarbakir, Turkey (subtropic) in 1999-2000, 2000-2001 growing seasons. Grain sorghum was grown in summers and wheat, barley, lentil and Hungarian vetch in winters. In the study, sorghum grain yield varied between 6833.8-9796.9 kg ha(-1). It was determined that Hungarian vetch is suitable for previous crop and 160 kg N ha(-1) N rate was the best nitrogen rate in grain sorghum production. According to interaction of previous crop-nitrogen rate, the highest yield was obtained from the subject grown after lentil with 160 kg N ha(-1). Grain sorghum following legumes in rotation did not respond to applications more than 160 kg N ha(-1), while barley-sorghum increased at all levels of N applied. Wheat-sorghum, fallow-sorghum did not respond to application more than 200 kg N ha(-1).
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    Effects of different previous crops and nitrogen rates on double cropping maize (Zea mays L.)
    (Asian Journal Of Chemistry, 2008) Gul, Ismail; Akinci, Cuma; Doran, Ilhan; Kilic, Hasan; Baytekin, Harun
    The effects of previous crops (wheat, barley, lentil, Hungarian vetch and fallow) and different nitrogen rate (0, 120, 160, 200 and 240 kg N ha(-1)) on grain yield and yield components of maize (Zea mays L.) were evaluated under irrigated conditions in Diyarbakir, Turkey in the 1999-2000, 2000-2001 growing seasons. Maize was grown in summers and wheat, barley, lentil and Hungarian vetch in winters. In-the study, grain yield of maize varied between 6340.3 and 11598.9 kg ha(-1). It was determined that Hungarian vetch was suitable for previous crop and 160 kg ha(-1) N rate is the best nitrogen rate in maize production. According to the interaction of previous crop-nitrogen rate, the highest yield was obtained from the subject grown after lentil and Hungarian vetch with 160 kg N ha(-1). Maize following legumes in rotation did not respond to applications over 160 kg N ha(-1), while barley-maize, wheat-maize increased at all levels of N applied. Fallow-sorghum did not respond to-application over 200 kg N ha(-1).
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    Effects of salt stress on pigment and total soluble protein contents of three different tomato cultivars
    (Academic Journals, 2010) Doganlar, Zeynep Banu; Demir, Koksal; Basak, Hakan; Gul, Ismail
    In this study, the effects of salt stress on pigment and total soluble protein contents were investigated in different varieties of tomato (Lycopersicon esculentum Mill.). The seedlings of L. esculentum viz. Hazera, Dalli Tokat and Argy were treated with NaCl at 25, 50, 100, 125, 150 and 200 mM concentrations for 96 h with 24 h interval. Pigment and total soluble protein contents of all tomato cultivars were significantly decreased by salt stress depending on time intervals and salt concentrations. Decreasing of pigment and total soluble protein contents were more evident in Hazera under short time salt exposure. Pigment content of Argy plants were less affected by salt concentration and exposure time. The results of this study suggest that the Argy cultivars are relatively better protected under salt stress conditions than Dalli tokat and Hazera cultivars.
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    The effects of sewage sludge used as fertilizer on agronomic and chemical features of bird's foot trefoil (Lotus corniculatus L.) and soil pollution
    (Academic Journals, 2010) Saruhan, Veysel; Gul, Ismail; Aydin, Isil
    This study was conducted to determine the effects of sewage sludge using fertilizer at different doses (3, 6, and 9 ton da(-1)) on birds' foot trefoil yields and chemical features. Residual of some heavy metal (Cd, Pb, Cu and Co) and macro element (K, Ca, Na, S, C and Mg,) concentrations were measured in soils and plants. According to the results of the study, sewage sludge, when applied to the soil with increasing amounts, raised the mineral matter content of plant, which affected the growth of plant favorably. Consequently, it affected the high herbage yield and increased the yield in parallellism with increasing doses of sewage sludge. Heavy metal contents were found under the critical levels in soil and plant. So, sewage sludge application as fertilizer used in appropriate doses did not pollute the soil that much, but leads to an increase in plant products.
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    RANGELAND IMPROVEMENT AND MANAGEMENT STUDIES IN THE SOUTHEASTERN ANATOLIA REGION OF TURKEY
    (Univ Agriculture, Fac Veterinary Science, 2015) Sayar, Mehmet Salih; Han, Yavuz; Basbag, Mehmet; Gul, Ismail; Polat, Tahir
    The purpose of this study was to examine applied rangeland improvement and management studies carried out from 2004 to 2011 in six provinces of the Southeastern Anatolia Region of Turkey. The aims of the studies were to (1) protect and conserve rangeland soil and water resources, (2) improve and strengthen weakened rangeland vegetation, and (3) increase hay yields and grazing capacities of the rangelands. Additionally, one of the most important goals of these studies was to enhance the cultivation of forage crops in cultivated areas in order to decrease the adverse effects of overgrazing and to supply quality roughage for livestock. To achieve these objectives, different rangeland improvement methods and rangeland management strategies were applied in 40 different rangelands in the region. The results indicated that the average sufficient rangeland area per animal unit was 1.99 ha, whereas the value recorded prior to these studies was 4.80 ha.
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    Response of Silage Maize (Zea mays L.) to Nitrogen Fertilizer after Different Crops in a Semi Arid Environment
    (Tubitak Scientific & Technological Research Council Turkey, 2008) Gul, Ismail; Yildirim, Mehmet; Akinci, Cuma; Doran, Ilhan; Kilic, Hasan
    The use of legume crops in maize rotation systems may decrease the need for nitrogen (N) fertilization and increase total output. The effect of previous crops (wheat, barley, lentil, Hungarian vetch, and fallow) and different N fertilization rates (0, 120, 160, 200, and 240 kg of N ha(-1)) on yield and N content of silage maize (Zea mays L.) were evaluated under irrigated conditions in Diyarbakir, Turkey, during the 1999-2000, 2000-2001, and 2001-2002 growing seasons. Dry matter yield varied between 10,068.2 and 16,480.4 kg ha(-1). It was determined that Hungarian vetch was a suitable rotation crop, and that 200 kg of N ha(-1) was the best N fertilization rate for silage maize production across years and N rates. Moreover, according to the previous crop x N fertilization rate interaction, the highest dry matter yield was obtained from 240 kg of N ha(-1) after barley. Silage maize following Hungarian vetch in rotation did not respond to the application of more than 120 kg of N ha(-1), in terms of dry matter and N yields, while in barley-maize and wheat-maize these 2 parameters increased in response to every level of N fertilization applied. Additionally, fallow-maize and wheat-maize did not respond to the application of more than 200 kg of N ha(-1). The legumes showed potential as previous crops that could replace fallow and cereals in silage maize production by reducing the amount of N fertilizer used on silage maize without significantly decreasing dry matter and N yield. Nonetheless, the cereals demonstrated high dry matter yields, based on annual production. According to regression analysis, the highest dry matter and N yields were obtained from the application of 198, 254, 211, 80, and 210 kg of N ha(-1) after previous crops of wheat, barley, lentil, Hungarian vetch, and fallow, respectively.