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    The Effect of Some Soil Conditioners on Yield and Water Use Efficiency in Soybean (Glycine max L.) Grown Under Water Stress Conditions
    (Taylor & Francis Inc, 2024) Sahin, Cenk Burak; Akcali, Cem Tufan; Tiryakioglu, Murat
    In this study, the effects of some soil conditioners (zeolite, hydrogel, peat) on the yield, yield components, and water use efficiency (WUE) of soybean (Glycine max L.) were investigated in two different irrigation regimes. The study was handled in a polycarbonate-greenhouse located in Hatay Mustafa Kemal University, T & uuml;rkiye, according to a completely randomized factorial design with three replications using the Agroyal variety of soybean as plant material. In a control group, three doses of hydrogel (40, 80, 120 kg ha(-1)), zeolite (500, 1000, 1500 kg ha(-1)), and peat (500, 1000, 1500 kg ha(-1)) were used as treatments under two irrigation regimes as I1 (irrigation made when the water fell up to %10 of the field capacity) and I2 (irrigation made when the water fell up to %50 of the field capacity). It was observed that some doses of the soil conditioners have a positive effect on the examined parameters. However, deficit irrigation decreased or inhibited the positive effect of soil conditioners. According to the results, zeolite application gave the most beneficial results under both two-irrigation management.
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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.