Cilt:27 Sayı:01 (2021)

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https://dspace.ankara.edu.tr/handle/20.500.12575/75092

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Browsing Cilt:27 Sayı:01 (2021) by Subject "Electrical conductivity"

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    Investigating the Effect of Long-Term Sugarcane Cultivation on Some Soil Properties of Soils in Karoun Agro-industry Unit, Khuzestan Province, Iran
    (Ankara Üniversitesi, 2021-03-04) SADEGHİ, Masoud; MOEZZİ, Abdolamir; GHOLAMİ, Ali; BABAEİNEJAD, Teimour; PANAHPOUR, Ebrahim; Ziraat Fakültesi
    The principal aim of the present research was investigation of the effect of long-term sugarcane cultivation on some chemical and physical properties of soil in Karoun Agro-industry Unit in Shoushtar city, Iran. The study was conducted in a factorial arrangement based on randomized complete block design with two field factors at 8 levels and three depths in three replications. Soil samples were collected and some of their physical (e.g., bulk density) and chemical (e.g., pH, EC, soil available phosphorus, organic carbon, soluble sodium and available potassium) Features9 were measured. Results revealed that land use change and long-term sugarcane cultivation reduced electrical conductivity, the amount of soluble sodium and available potassium contents of soil in different depths, while caused increasing the percentage of organic matter and available soil phosphorous. However, at similar experimental conditions, no significant changes were observed in soil pH. The soil bulk density contents in farms under continuous cultivation of sugarcane, was more than the control field and HARZA. Moreover, soil exchangeable potassium was identified as a sensitive indicator of long-term sugarcane cultivation.
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    Vigour Assessment of Dill (Anethum graveolens L.) Seed Lots in Relation to Predicting Seedling Emergence Potential
    (Ankara Üniversitesi, 2021-03-04) Özden, Eren; Memis, Nurcan; Kenanoğlu, Burcu Begüm; Demir, İbrahim; Ziraat Fakültesi
    The study aimed to test various vigour tests to correlate them with seedling emergence in two field sowing dates and two different sowing depths in controlled room emergence of ten dill seed lots. Mean germination time, accelerated aging; for 24 hours, 48 hours, and 72 hours, electrical conductivity readings at 16 hours and 24 hours, and EC readings after AA test were used as vigour tests, and results were correlated with seedling emergence percentages. Seedling emergence was tested in two sowing dates in the field and two different sowing depths in controlled room conditions. Controlled room seedling emergence values (80-95% in 2 cm, 76-92% in 4 cm) were higher than those of field emergence values (67-85% in the first sowing and 60-80% in the second sowing). Most of the vigour tests were significantly correlated with emergence potential. The highest correlation values were observed in EC16h and EC24h tests, significance between emergence and these two vigour tests were at P<0.001 three out of four sowings. The results indicated that EC16h can be a fast, practical and easy method of seed vigour discrimination in dill seed lots.