Abdullah Sessiz

Tillage system and cotton residue management effects on soil physical and chemical properties of an Anatolian clay loam sown within a wheat-cotton sequence

Soil properties are very important for plant growth and soil conservation. Although soil properties can be influenced by agricultural production systems, this influence has seldom been studied in the semi-arid South East Anatolia region of Turkey. Thus, a three-year experiment was carried out to evaluate the effect of tillage and residue management systems in wheat (Triticum durum L.) agriculture following cotton (Gossypium hirsutum L.) on soil properties. A strip plot design with three replications was used, in which two residue management treatments were collecting cotton stalk (SA) and chopping cotton stalk (SB), and six tillage treatments were conventional tillage-I (CT-I), conventional tillage-II (CT-II), vertical tillage (VT), reduced tillage-I (RT-I), reduced tillage-II (RT-II), no-till ridge planting (RP). While there was no difference at 10–20 and 20–30 cm, the penetration resistance was the lowest for CT-I (1.62 MPa) at 0–10 cm. Although tillage treatments had no significant effect on the soil bulk density at 0–10 and 20–30 cm, the lowest bulk density were obtained in RT-II (1.19 g cm−3) at 10–20 cm. Tillage and residue management treatments did not influence the soil organic matter content and pH.

Cutting Properties of Olive Sucker

Abstract The exact knowledge of olive suckers and branches cutting behaviour is one of the main parameters for optimizing the design of cutting elements in pruning machines. In this study, the cutting properties of five different varieties of the table olive, namely Halhali, Gullaki, Mavis, Belloti and Zoncuk respectively, were determined. The cutting properties were measured at three moisture content levels (17.05, 34.44, and 39.47 %) and four cross-sectional areas (12.56, 28.27, 50.26 and 78.54 mm2). The results showed that the cutting force and cutting energy requirement of olive suckers decreased with increasing moisture content in all of the olive varieties. However, these properties increased with increasing cross-sectional area. The maximum cutting force, cutting strength, cutting energy requirement and specific cutting energy of olive sucker were obtained at the Halhali variety as 869.15 N, 18.66 MPa, 4.29 J and 0.0875 J.mm-2, respectively, while the minimum cutting values were obtained at the Zoncuk variety as 619.19 N, 14.75 MPa, 2.44 J and 0.0531 J.mm-2, respectively. As a result, the data obtained from cutting tests of the olive sucker can be used in a new design and development of an experimental prototype of olive branch cutting and pruning machine.

Evaluation of wheat stubble management practices in terms of the fuel consumption and field capacity

Gursoy S., Kolay B., Avsar O., Sessiz A. (2015): Evaluation of wheat stubble management practices in terms of the fuel consumption and field capacity . Res. Agr. Eng., 61: 116–121.

The Situation of Food Industry Based on Animal Production in Diyarbakır Province

Bu calisma Diyarbakir ili hayvansal gida (et, sut ve yumurta) isleme tesislerinin mevcut durumu, ham madde temini, uretim, kalite, teknik altyapi, kapasite kullanim durumu ve pazarlama kosullari ile kamu otoritesinden beklentileri ortaya koymak amaciyla yurutulmustur. Bu arastirma kapsaminda, Diyarbakir ‘da bulunan toplam 16 gida urunleri imalat ve isleme tesisi ziyaret edilerek, isletme sahipleri veya sorumlu yoneticileri ile yuz yuze gorusmeler gerceklestirilmistir. Toplam 34 sorudan olusan anket sorulari isletmelerdeki yetkililere yoneltilmis ve elde edilen veriler kayit altina alinarak degerlendirilmistir. Arastirmada; Diyarbakir’da hayvansal gidalarla ilgili tesislerden 8’inin sut ve sut urunleri isleme, 7’sinin yumurta paketleme tesisi ve birinin et ve et urunleri isleme tesisi oldugu saptanmistir. Bu mevcut tesislerde toplam 115 kisinin istihdam edildigi belirlenmistir. Tesislerin kapasite kullanim oranlari (KKO) yogurtta %16.6, ayranda %49.1, peynirde %11.7, tereyaginda %25 ve yumurta paketlemede %46.1 seviyesinde oldukca dusuk oldugu tespit edilmistir. Haksiz rekabet sorununun isletmelerin %85.7’si icin en onemli sorun oldugu, %14.3’u icin ise bunun ikinci sirada onem arz ettigi saptanmistir. Sonuc olarak, Diyarbakir’da hayvansal urun isleyen tesislerin dusuk kapasiteyle calistiklari ve frmalar arasi haksiz rekabetin, bu sonucun ortaya cikmasinda etkili oldugu belirlenmistir