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    Effect of Harvesting Time on Yield, Composition and Forage Quality of Some Forage Sorghum Cultivars
    (Friends Science Publ, 2012) Atis, Ibrahim; Konuskan, Omer; Duru, Metin; Gozubenli, Huseyin; Yilmaz, Saban
    Forage sorghum (Sorghum bicolor (L.) Moench) is one of the most important fresh fodder and silage sourdein the world, and its quality and yield are difectly related in the harvesting time. In this study, four forage sorghum cultivars (Sorghum bicolor (L.) Moench) were compared to determine effects of delayed harvesting time on the changes in yield and forage quality. Field experiments were conducted during the 2010 and 2011 growing seasons. Four forage sorghum cultivars (Early Sumac, Leotti, Nes, Rox) were harvested at four different growing stages (panicle emergence stage (PE), milky stage (MS), dough stage (DS) and physiologic maturity stage (PM)). Dry matter, fresh forage yield, plant height, dry matter content, panicle proportion, protein yield, lignin content and relative feed value (RFV) tended to increase with advanced plant maturity, while leaf proportion, protein content, neutral detergent fiber content (NDF), acid detergent fiber content (ADF), cellulose content and hemicellulose content tended to decrease. Dry matter contents of all sorghum cultivars harvested during the PE and MS. stages were below 247 g kg(-1). Among whole plant organs, stem proportion was higher than those of leaf and panicle proportions. Mean dry matter yields of cultivars were ranged from 18.75 t ha(-1) to 20.15 t ha(-1). These findings have shown that suitable harvesting time of forage sorghum is PM stage for high yield and fodder quality, but it may be harvested at DS stage due to increasing lignin content. None of these sorghum cultivars should be harvested before DS stage for ensilage due to low dry matter content. Nes can be preferred because of the high forage and protein yield. 2012 Friends Science Publishers
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    Effects of plant maturity stage on silage quality of some silage sorghum cultivars
    (Wfl Publ, 2013) Atis, Ibrahim; Duru, Metin; Konuskan, Omer; Gozubenli, Huseyin
    The present study was conducted to investigate the ensilage properties of sorghum cultivars at different harvesting times. To achieve this aim, four silage sorghum cultivars (cv. Early Sumac, Leotti, Nes and Rox) were harvested at four different growing stages (panicle emergence stage (PE), milky stage (MS), dough stage (DS) and physiologic maturity stage (PM)). For four cultivars and four harvesting times, sorghum forage ensiled for total 16 silage samples with 3 replications. At the end of a 60-days period of silage, silage samples were opened. Dry matter content, crude lipid content, lignin content and flieg point tended to increase with advanced plant maturity, while CO2 production, neutral detergent fiber content (NDF), acid detergent fiber content (ADF), cellulose content and hemicellulose content tended to decrease. The pH values of sorghum silages were not significantly influenced by harvest time. Also, dry matter content, flieg point, crude lipid content, NDF, ADF, lignin, cellulose and hemicellulose content were significantly influenced by cultivars. These findings showed that suitable harvesting time of forage sorghum is a PM stage for suitable ensilage and among four cultivars, cv. Nes can be preferred because of the high dry matter content, high flieg point and low CO2 production.
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    Genotype and plant density effects on corn (Zea mays L.) forage yield
    (Asian Network for Scientific Information, 2007) Yilmaz, Saban; Gozubenli, Huseyin; Konuskan, Omer; Atis, Ibrahim
    Corn forage is an important source of feedstuff for beef and dairy catties. A two-year study was conducted in Eastern Mediterranean Region of Turkey to determine the optimum plant densities for forage yields of com genotypes commercially grown in Eastern Mediterranean Region during 2000 and 2001 growing seasons. The experimental design was a randomized complete block in a split-plot arrangement with three replications. Main plots were com hybrids of Dracma, Pioneer 3223, Pioneer 3335, Dekalb 711 and Dekalb 626 and Arifiye. Split-plots were plant densities of 143 000, 114 000, 95 000, 82 000 and 71 000 plant. Split-plot size was 2.8 m by 5.0 m with four rows per plot. The effects of corn genotypes and plant densities on the forage and dry matter yield and some agronomic characteristics were significant. The highest forage and dry matter yields were obtained from Dracma genotype (69.5 and 27.01 ha-1, respectively). The highest forage and dry matter yield obtained at 114000 and 143000 plant densities (64.4 and 62.31 ha-1 forage yield and 24.8 and 23.11 ha-1 dry matter yield, respectively). © 2007 Asian Network for Scientific Information.
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    Influence of Planting Patterns and Plant Density on the Performance of Maize Hybrids in the Eastern Mediterranean Conditions
    (Friends Science Publ, 2010) Gozubenli, Huseyin
    There has been an increasing interest in different planting patterns such as twin-row and narrow-row configurations to obtain better grain yield in maize. To observe the effect of different planting patterns (twin-row & narrow-row), a study was conducted at the Research Station of Mustafa Kemal University, Hatay in the Eastern Mediterranean region of Turkey in the years, 2003 and 2004. The experiment was conducted in split-split plot arrangement in the randomized complete block design with three replications. Planting patterns, plant densities and hybrids were placed in main, split and split-split plots, respectively. Planting patterns were conventional row with 75 cm inter-row, twin-row with 55:20 cm alternate row and narrow-row with 50 cm inter-row. Plant densities were 80.000, 100.000 and 120.000 plants ha(-1) and maize hybrids were Dk-585, Maverik and Pr-1550. A better grain yield was obtained from twin and narrow row systems than the conventional one. However, grain yield and its component traits were strongly affected by environment and hybrid, as well as planting patterns used in the field experiments. The results suggested that Maverik and Dk-585 could be better choices for twin row planting while Pr-1550 was better for narrow-row planting in the double cropping systems. (C) 2010 Friends Science Publishers
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    Nitrogen dose and plant density effects on popcorn grain yield
    (Academic Journals, 2010) Gozubenli, Huseyin; Konuskan, Omer
    Popcorn (Zea mays everta Sturt.) is a popular and nutritious snack food. Environmental factors affecting grain yield and yield-related components of popcorn are needed to compensate increasing demand. This research was conducted to determine the effects of nitrogen fertilizer application rates and plant densities on grain yield and yield-related plant characteristics of popcorn in Hatay, located at Southern Mediterranean region of Turkey, during 2002 and 2003. The experiment was designed in a randomized complete block design with a split-plot arrangement with three replications. Nitrogen doses of 0, 120, 180 and 240 kg ha(-1) were arranged in the main plots and plant densities of 60,000, 74,000, 88,000 and 102,000 plants ha(-1) were arranged in the sub-plots. Popcorn grain yield and yield-related traits were significantly affected by nitrogen doses and plant densities. Our results indicated that suitable nitrogen dose and plant density were 180 kg N ha(-1) and 88 000 plants ha(-1) for popcorn grown as a second crop in Hatay ecological conditions in Eastern Mediterranean region of Turkey.
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    Sowing Date Effect on Some Agro-Morphological Characteristics of Maize (Zea mays L. indentata)
    (Kahramanmaras Sutcu Imam Univ Rektorlugu, 2023) Akcali, Cem Tufan; Gozubenli, Huseyin
    In this study, it was aimed to determine some agricultural characteristics of maize (Zea mays L. indentata) grown in different sowing dates under irrigated Mediterranean conditions. The study was conducted in 2019 and 2020 in Hatay / Turkey, according to split -plots in randomized complete blocks design with three replications. Four different sowing dates (March 1, March 15, April 1, and April 15) were in the main plots and three different commercial hybrid maize cultivars (77MAY35, DKC6630, P2088) were in the sub plots. It was determined that as the sowing date is delayed, the time to reach physiological maturity was shortened and plant height, ear height, thousand kernel weight, biomass yield and grain yield values of cultivars were significantly affected by environmental conditions changing depending on sowing dates. There were no statistically significant differences in grain yield between sowing dates and mean values determined as 1164.8, 1079.0, 1077.5, and 1058.7 kg da-1, in SD2, SD1, SD4, and SD3, respectively. It can be concluded that all of these varieties can be grown by sowing between March 1 and April 15 in regions with similar ecological conditions in the Mediterranean climate zone. Considering the fact that the aim in commercial production is to obtain the highest yield from the unit area, when evaluated in terms of grain yield, the second highest yielding sowing date (March 15) was chosen as the appropriate sowing date for our region.