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Öğe COMPARISON OF ORGANIC AND TRADITIONAL PRODUCTION SYSTEMS IN CHICKPEA (Cicer arietinum L.)(Soc Field Crop Sci, 2013) Caliskan, Sevgi; Erdogan, Cahit; Arslan, Mehmet; Caliskan, Mehmet EminYield and yield components, and protein content of chickpea (Cicer arietinum L.) were compared in traditional and organic production systems since organic farming has many advantages on environment, animal and human health over traditional production systems. In the study, organic production system, green manure, farmyard manure and effective microorganisms and their combinations were tested as six treatments. Seed yield and some yield components were found higher in the traditional production system than those of organic production systems. The highest protein content was obtained in green manure and farmyard manure applications. Among the organic production systems, green manure and farmyard manure applications could be strongly recommended for organic chickpea producer since the highest seed yields with 2729 in 2007 and 3838 kg ha(-1) in 2008 were found in green manure + farmyard manure treatment among the organic production systems.Öğe Effects of molasses and ground wheat additions on the quality of groundnut, sweet potato, and Jerusalem artichoke tops silages(Academic Journals, 2010) Kaya, Serafettin; Caliskan, Mehmet EminIn this study, the effects of molasses (M) and ground wheat (GW) additions on the quality of groundnut (Arachis hypogaea L.) (GN), sweet potato (Ipomoea batatas L.) (SP) and Jerusalem artichoke (Helianthus tuberosus L.) (JA) tops silages were investigated. GW and M were added in the silages at 0, 2, 4 and 6% in fresh matter basis (W0, W2, W4, W6 and M0, M2, M4, M6). Additions of the silage additives increased the DM of the silages (P<0.01). Compared with the silages having no additives, CP contents of the silages supplemented with both silage additives were higher. Four percent GW added SP silage had more CP content (11.59%) while 6% GW added JA had less CP content (4.7%). Except for JA silage (P > 0.05), M and GW decreased pH in the GN and SW tops silages (P < 0.01). The ADF, NDF and ADL contents were significantly decreased (P < 0.001) by increased level of GW and M. The lactic acid contents of the GN silages with 2 and 4% GW and SP silage with 6 % GW were lower than the desired level (2%). Flieg scores of all silages were excellent, except GN silages added with 0, 2 and 4% GW which had good score.Öğe Effects of plant density on the yield and yield components of true potato seed (TPS) hybrids in early and main crop potato production systems(Elsevier, 2009) Caliskan, Mehmet Emin; Kusman, Noyan; Caliskan, SevgiThis study was conducted to evaluate true potato seed (TPS) technology for use in ware or seed potato production in two contrasting environments in Turkey during 2002 and 2003. The field experiments were carried out in the Hatay and Nevsehir provinces in Turkey, which represent a Mediterranean early crop potato production area and a temperate main crop potato production area, respectively. The plug seedlings of six TPS hybrids were transplanted to the fields at four densities (15, 20, 25 or 30 plants m(-2)). The seed tubers of the medium early cultivar Marfona were also planted in the experimental plots to compare the performance of the TPS hybrids with traditional seed tubers. Transplanting of the seedlings was significantly delayed in Hatay due to unsuitable weather conditions in both years. The seedlings needed an adaptation period of 2-4 weeks after transplanting depending on the location and the growing conditions. The adaptation period was longer in Hatay due to high air temperatures after transplanting. Although the yield performance of the TPS hybrids differed depending on the location and year, the TPS hybrids produced noticeably higher total tuber yields in Nevsehir location (ranging from 43.1 to 62.5 t ha(-1) in 2002 and from 39.5 to 50.6 t ha(-1) in 2003) than in Hatay (ranging from 15.3 to 19.6 t ha(-1) in 2002 and from 15.1 to 19.1 t ha(-1) in 2003). The percentage of marketable tubers (>28 mm) was also considerably higher in Nevsehir. The optimal plant density varied between 25 and 30 plants m(-2) with regard to the total yield, while the optimal density with regard to the marketable yield was 20 or 25 plants m(-2) depending on hybrids in Nevsehir. However, none of the tested plant densities caused competition between plants in Hatay, where the environmental conditions during the growing period considerably restricted the growth of individual TPS seedlings. It was concluded that transplanting of TPS seedlings can be considered a feasible alternative for ware or seed potato production in temperate environments like Nevsehir that have growing periods of at least 4 months. However, there are several obstacles, such as difficulties with the timing of transplanting, long adaptation period that threaten the practicability of TIPS technology in Mediterranean-type environments. Further agronomical studies focused on reducing inter- and intra-plant competition are needed for both environments in order to improve the acceptability of TPS technology to farmers. (C) 2009 Elsevier B.V. All rights reserved.Öğe Genotype x environment interaction and stability analysis of sweetpotato (Ipomoea batatas) genotypes(Taylor & Francis Ltd, 2007) Caliskan, Mehmet Emin; Erturk, Elif; Sogut, Tahsin; Boydak, Erkan; Arioglu, HalisNine introductions of sweetpotato (Ipomoea batatas) of diverse origin and two local genotypes were evaluated for storage root yield and average storage root weight in four locations of Turkey (Diyarbakir and Sanliurfa representing semi-arid environment and Adana and Hatay representing Mediterranean environment) in 2000 and 2001. The genotype x environment (GE) interaction was evaluated for two yield components (mean storage root weight and storage root yield) using the joint regression analysis and the Additive Main Effects and Multiplicative Interaction (AMMI) analysis. Stability of the genotypes over environments was estimated by using different stability parameters. GE interaction was found to be significant for both yield components, and genotype main effect contributed more than environment and GE interaction to total variability. Total storage root yield varied from 6.72 to 112.60 t ha(-1), depending on genotypes and environments. The introduced genotypes produced a higher yield than local genotypes. Our study revealed that sweetpotato has a great adaptability and yield potential in irrigated Mediterranean-type and semi-arid environments, whereas non-traditional production areas such as Adana, Diyarbakir, and Sanliurfa may be more suitable for sweetpotato production than Hatay, the traditional production area, because of the potential for higher yield. The AMMI model appeared to be a better option for evaluating both GE interaction and the stability of sweetpotato genotypes in multilocational trials. The stability parameters tested in this study could not identify high yielding and stable genotypes.Öğe Growth, yield, and quality of sweet potato (Ipomoea batatas (L.) lam.) cultivars in the southeastern Anatolian and East Mediterranean Regions of Turkey(Tubitak Scientific & Technological Research Council Turkey, 2007) Caliskan, Mehmet Emin; Soeguet, Tahsin; Boydak, Erkan; Ertuerk, Elif; Arioglu, HalisThe study was carried out to determine the adaptation potential of sweet potato crops to different regions of Turkey. The study included 9 introduced genotypes of diverse origin and 2 local genotypes that were tested in 4 locations (Diyarbakir and Sanliurfa representing the southeastern Anatolia region, and Adana and Hatay representing the Mediterranean region) in 2000 and 2001. Haulm and storage root growth of the cultivars were monitored at monthly intervals. Total and graded storage root yield, and some quality parameters were determined at the final harvest. Although haulm and storage growth varied according to location and year, all cultivars showed rapid growth from the 90th to 120th day after planting (DAP), at all locations. Storage root formation started between the 30th and 60th DAP at all locations. Total storage root yield, according to cultivar, location, and year, varied from 6.72 to 112.60 t ha(-1), and the introduced genotypes produced higher yields than the local genotypes. Cultivars showed significant diversity in quality traits, such as dry matter content, alcohol insoluble solids content, protein content, and total carotenoid content. This study revealed that sweet potato could be adapted to both the Mediterranean and southeastern Anatolia regions of Turkey, and that high yield values could be achieved in these areas.Öğe The lepidopteran pests of sweet potato: First record of Helcystogramma triannulella (Herrich- Schaffer) (Lepidoptera: Gelechiidae) with population development and natural enemies in Turkey(Entomological Soc Turkey, Ege Univ, 2016) Kaya, Kamuran; Can Cengiz, Feza; Caliskan, Mehmet Emin; Caliskan, SevgiThe study was conducted in Hatay Province, east Mediterranean Region, Turkey in 2012 and 2013 to determine major lepidopteran pests of sweet potato and to document the population development of the newly recorded species Helcystogramma triannulella (Herrich-Schaffer) (Lepidoptera: Gelechiidae) in 2013. Four lepidopteran species, Aedia leucomelas (L.) (Noctuidae), Agrius convolvuli (Linnaeus) (Sphingidae), Hydriris ornatalis (Duponchel) (Crambidae) and H. triannulella were found. This was the first detection of H. triannulella in Turkey, so its population development was studied in the second year. The larval population of H. triannulella began to increase towards the end of July and reached its peak in mid-August. During the study, predators, Hippodamia variegata (Goeze), Oenopia conglobata (L.), Scymnus interruptus (Goeze), Scymnus mediterraneus Khnzorian, Stethorus gilvifrons (Mulsant) (Coleoptera; Coccinellidae); Nabis viridulus Spinola (Hemiptera: Nabidae) were found in the folded parts of the leaves, and parasitoids, Apanteles sp., Chelonus sp. (Hymenoptera: Braconidae) and Compsilura concinnata (Meigen) (Diptera: Tachinidae) were obtained in the laboratory from larvae of H. triannulella.Öğe Overview of the Turkish Potato Sector: Challenges, Achievements and Expectations(Springer, 2010) Caliskan, Mehmet Emin; Onaran, H.; Arioglu, H.Having a history of nearly 150 years in Turkey, potato has become one of the most important agricultural crops of the country. Potato production, processing, marketing and consumption have become a major sector as well. However, regardless of these advancements, the Turkish potato sector has still not reached its full potential. Therefore, different approaches are needed in the Turkish potato sector to overcome chronic problems as soon as possible. This paper summarizes the past and the current situation of the Turkish potato industry and evaluates its weaknesses and strengths.Öğe Special Issue: Selected papers and Abstracts of Section meeting AgroPhysiology, Nevsehir, Turkey, 20-24 September 2010 Preface(Springer, 2010) Caliskan, Mehmet Emin; Struik, Paul C.[Abstract Not Available]
