细化搜索
结果 371-380 的 392
Optimization Model for Machinery Selection of Multi-Crop Farms in Elsuki Agricultural Scheme 全文
2017
Mysara Ahmed Mohamed | Abdalla Noureldin Osman Kheiry | Abbas Elshiekh Rahama | Alameen Alwathig Alameen
The optimization machinery model was developed to aid decision-makers and farm machinery managers in determining the optimal number of tractors, scheduling the agricultural operation and minimizing machinery total costs. For purpose of model verification, validation and application input data was collected from primary & secondary sources from Elsuki agricultural scheme for two seasons namely 2011-2012 and 2013-2014. Model verification was made by comparing the numbers of tractors of Elsuki agricultural scheme for season 2011-2012 with those estimated by the model. The model succeeded in reducing the number of tractors and operation total cost by 23%. The effect of optimization model on elements of direct cost saving indicated that the highest cost saving is reached with depreciation, repair and maintenance (23%) and the minimum cost saving is attained with fuel cost (22%). Sensitivity analysis in terms of change in model input for each of cultivated area and total costs of operations showing that: Increasing the operation total cost by 10% decreased the total number of tractors after optimization by 23% and total cost of operations was also decreased by 23%. Increasing the cultivated area by 10%, decreased the total number of tractors after optimization by(12%) and total cost of operations was also decreased by 12% (16669206 SDG(1111280 $) to 14636376 SDG(975758 $)). For the case of multiple input effect of the area and operation total cost resulted in decrease maximum number of tractors by 12%, and the total cost of operations also decreased by 12%. It is recommended to apply the optimization model as pre-requisite for improving machinery management during implementation of machinery scheduling.
显示更多 [+] 显示较少 [-]Determination of Sensitivity of Different Cereal Species to Zinc Deficiency 全文
2017
Ayfer Alkan Torun | Halil Erdem | İnci Tolay | Mustafa Bülent Torun
Zinc (Zn) deficiency is an important mineral nutrient problem that restricts the crop yield especially that of the cereals grown in calcareous soils. This study was carried out with the aim of testing the sensitivity of various cereal species consisting of bread (BDME-10, Bezostaja), durum (Kızıltan Ç-1252) and rye (Aslım) to Zn deficiency. In experiments carried out under greenhouse conditions plants were grown at two different Zn doses (Zn 0 and Zn 5 mg kg-1). When the plants were 44 days old, Zn deficiency symptoms were observed and scored for the severity of Zn deficiency according to 1-5 scale and the plants were harvested. With respect to the severity of Zn deficiency symptoms, the most severe symptoms were observed in the C-1252 (1.0) and Bezostaja (2.0) varieties while the least mild symptoms were observed in varieties of Aslım (4.0) and Kızıltan (3.0). A distinctive increase in shoot dry matter yield has been realized with Zn application which was highest in Ç-1252 (78.8%) and BDME-10 (52.5%) varieties. Greatly differential responses have been seen to Zn deficiency among cereal species and varieties within the same species. Symptomatically and with respect to dry matter yield while durum wheat was affected severely from Zn deficiency, bread wheat was affected moderately and rye has been seen to be affected least. According to the severity of Zn deficiency symptoms and plant growth cereals which are the subject of experiment have shown a rank as as Ç1252> BDME-10> Kızıltan> Bezostaya> Aslım.
显示更多 [+] 显示较少 [-]Evaluation of an Organic Package of Practice Towards Green Gram Cultivation and Assessment of its Effectiveness in Terms of Crop Sustainability and Soil Quality Development 全文
2017
Antara Seal | Ranjan Bera | Rupkatha Roy Chowdhury | Koushik Mukhopadhyay | Sudipta Mukherjee | Ajit Kumar Dolui
Restoration of soil has been identified as the option; to ensure crop sustainability. However, as per Trophobiosis Theory of French Scientist F. Chaboussou, focus on development of healthy plants is necessary to abate pest and disease invasion so as to ensure sustained crop performance, even under unfavorable environmental conditions. The present study, in randomized block design with green gram as test crop; was undertaken in Krishi Vigyan Kendra (Howrah, West Bengal) to evaluate the effectiveness of Inhana Rational Farming (IRF) Technology towards crop yield and soil quality development under different sustainable models viz. organic cultivation, integrated soil with organic crop management and non- chemical crop management; as compared to conventional farming practice. Highest yield was recorded under organic (933 kg ha-1) followed by integrated (921 kg ha-1) and non- chemical plant management (902 kg ha-1). The results were well corroborated with the plant development index obtained under these treatments. Favorable trend of soil quality under sustainable models especially in terms of microbial properties indicated the role of quality compost towards speedy rejuvenation of soil dynamics. The study indicated that reduction of synthetic fertilizers and qualitative management of soil is essential to restrict yield decline. However, plant management shall be prerequisite for ensuring crop sustainability without any time lag and under the changing climatic patterns. In this respect the potential of IRF Technology has been well accounted.
显示更多 [+] 显示较少 [-]Bakteri ve Oksin Uygulamalarının Kuşburnu Bitkisinin Çelikle Çoğaltılması Üzerine Etkileri 全文
2017
Elif Kınık | Fisun Gürsel Çelikel
Rosa canina L. çelikleri sonbahar mevsiminde Ondokuz Mayıs Üniversitesi Kurupelit Kampüsü florasından temin edilmiştir. Yarı odunsu çelikler, sisleme ve alttan ısıtma sistemi olan köklendirme masasına, 1:1 oranında torf ve perlit karışımına dikilmiştir. Çalışmada 10 farklı rizobakteri (bitki gelişimini düzenleyen) izolatı tek başına ve 1000 ppm oksin (Indole-3-butyric acid-IBA) ile birlikte uygulanmıştır. Çelikler 6 saat bakteri uygulamasından sonra, dikim öncesi 10 saniye IBA çözeltisinde bekletilmiştir. Köklenme oranı, kök yumağı eni, kök boyu ve ana kök sayısı saptanmıştır. En yüksek köklenme oranı Bacillus megaterium, Bacillus megaterium ve Pseudomonas flourescens uygulamalarında %30 olarak saptanmıştır. Kontrolde %10 oranında köklenme görülürken, IBA bazı bakterilerin etkisini değiştirmemiş (Bacillus subtilis, Agrobacterium rubi, Paenibacillus polymyxa), bazılarında hafif düşüşe yol açmış (Bacillus megaterium), buna karşın tek başına hiç köklenme sağlamayan 3 bakteri izolatı (Bacillus megaterium, Bacillus subtilis, Pseudomonas putida) %10 oranında köklenme göstermiştir. Bakteri uygulamaları genel olarak, köklenme oranı dışında köklenme kalitesini (kök yumağı eni, kök boyu ve ana kök sayısı) artırmıştır.
显示更多 [+] 显示较少 [-]Organic Plant Production in the Black Sea Region 全文
2017
Ahmet Öztürk | Besim Karabulut
Organic agriculture approach started with coming up the adverse effect’s of chemical and genetic inputs on human health and natural environment in time, it has been also continued by raising the importance nowadays. Organic agriculture production amount of Turkey was 331.361 tons in 191.785 ha areas, although it was reached up to 1.627.106 tons (391% increased) in 379.042 ha (98% increased) areas. Black sea region has nearly 18.000 ha area (4.7%) of organic agriculture areas of Turkey. The region has organic agriculture potential with regard to regional land structure and qualification of produced products. In 2010, organic agriculture production was 31.960 tons in 88.322 ha areas, although it was 119.425 tons (274% increased) in 18.061 ha (80% decreased) areas in 2016. In recent years, Rize (57%), Tokat (14.6%), Ordu (7.5%), Gümüşhane (4.9%) and Samsun (3.8%) are leading provinces in the region in terms of organic production quantities. Tea (67.927 tons: 57.7%), hazelnut (11.785 tons: 9.9%), apple (11.253 tons: 9.4%), pear (5.207 tons: 4.4%), maize (4.705 tons: 3.9%) and alfalfa (4.301 tons: 3.6%) are major organic products of Black Sea region. At present study, current situation of organic plant production and potential in the Black Sea region were presented.
显示更多 [+] 显示较少 [-]Gümüşhane İlinin Agro-Turizm Potansiyelinin Değerlendirilmesi 全文
2017
Suat Akyürek | Besim Karabulut
Günümüzde giderek önemi artan ve alternatif turizm çeşitlerinden biri olan agro-turizm, tarım ve turizmin bir araya gelmesi ile ortaya çıkmıştır. Agro-turizm, yoğun şehir yaşantısından uzaklaşmak isteyen bireylerin genellikle çiftlik tarzı evlerde konakladığı, organik ürünlerden faydalandığı doğa ile iç içe yapılan bir turizm faaliyetidir. Özellikle gelişmiş ülkelerde oldukça yaygın olan bu turizm çeşidinin ekonomik, sosyolojik ve biyolojik açıdan birçok katkısı bulunmaktadır. Agro-turizm ülkemizde özellikle Ege ve Akdeniz Bölgesinde yaygın olarak faaliyet göstermektedir. Gümüşhane, Doğu Anadolu ve Karadeniz Bölgesi arasında kalan, bu iki bölgenin iklimini yaşayan ve 113 bin ha’lık tarıma elverişli araziye sahip bir bölgedir. Diğer yandan gerek doğal güzellikleri gerek kültürel mirası ile hâlihazırda bir turizm potansiyeline sahip olan Gümüşhane ilinin agro-turizm açısından da değerlendirilmesi gerektiği düşünülmektedir. Bu bağlamda çalışmada, ilin agro-turizm potansiyeli değerlendirilerek, agro-turizm açısından SWOT analizi yapılmış ve son olarak ilin agro-turizm potansiyelinin geliştirilmesi kapsamında öneriler sunulmuştur. Bu amaçla, ikincil kaynaklardan yararlanılarak veri toplanmıştır.
显示更多 [+] 显示较少 [-]Working with Proteins in silico: A Review of Online Available Tools for Basic Identification of Proteins 全文
2017
Caner Yavuz | Zahide Neslihan Öztürk
Increase in online available bioinformatics tools for protein research creates an important opportunity for scientists to reveal characteristics of the protein of interest by only starting from the predicted or known amino acid sequence without fully depending on experimental approaches. There are many sophisticated tools used for diverse purposes; however, there are not enough reviews covering the tips and tricks in selecting and using the correct tools as the literature mainly state the promotion of the new ones. In this review, with the aim of providing young scientists with no specific experience on protein work a reliable starting point for in silico analysis of the protein of interest, we summarized tools for annotation, identification of motifs and domains, determination isoelectric point, molecular weight, subcellular localization, and post-translational modifications by focusing on the important points to be considered while selecting from online available tools.
显示更多 [+] 显示较少 [-]Investigate of Physicochemical and Microbiological Quality of Yenice-Davutköy (Çanakkale) Irrigation Ponds 全文
2017
Kahraman selvi | Seda Özdikmenli Tepeli | Burcu İleri | Ramazan Yıldız | Mehmet Ali Yücel
The aim of this study is to determine seasonally water quality characteristics irrigation ponds. Surface water samples were collected from three different sampling points in Yenice and Davutköy irrigation ponds (NW Turkey) for four different seasons. The parameters of dissolved oxygen, pH, salinity, electrical conductivity, chemical oxygen demand, biochemical oxygen demand, ammonium, nitrite, nitrate, total hardness, chloride and sodium adsorption rate (SAR) were investigated for Yenice and Davutköy irrigation water quality. According the national and international water quality standards, physicochemical parameters were determined under permissible level. In addition, sampling ponds are located C1−S1 class of ABD salinity diagrams. This result means that salinity and sodium values of water are suitable for ecological system and can be using for irrigation. Furthermore, the microbial quality of irrigation water for the ponds were determined that rate of mesophyll and psychotropic bacteria are connected with temperature. It is detected that the term of low temperature is high level of psychotropic bacteria and the term of high temperature increase the number of mesophyll bacteria. Pearson correlation analysis between the results of the statistical psychotropic aerobic count and temperature significant was found a strong negative correlation (r= -0,635). Fecal pollution indicator as the number of E.coli stations in Davutköy pond in the summer sampling were determined 110 cfu/100ml and 50 cfu/100ml, respectively. E.coli was not detected other stations and sampling time. Finally, according to obtained analysis results are determined that water qualities for Yenice and Davutköy ponds are suitable for agriculture activities.
显示更多 [+] 显示较少 [-]The Determination of Heat Energy Requirement for Greenhouses with Different Hardware under Climate Conditions Antalya 全文
2017
Abdullah Nafi Baytorun | Sait Üstün | Adil Akyüz | Ali Çaylı
In Mediterranean climate region, during certain times of the year the daily average temperature decreases under 12°C. In such conditions, greenhouse heating is essential to be able to get the high quality yield that is expected from greenhouses. The cost of heating varies from 20% to 60% of the total costs depending on the climate of the region, size, type and hardware of the greenhouse and type of plant grown in the greenhouse. The heat requirement in greenhouses is calculated based on the rudiments defined by DIN 4701 standards. However, the real temperature in greenhouses is higher than the outside temperatures used in calculations. For this reason, the heat requirement in greenhouses should be calculated by taking temperature increases that are caused by ventilation temperature and heat storage capability into consideration. In this study, the heat energy need of Antalya which is located in Mediterranean region is assessed according to its climate conditions. In the calculations, the different hardware structures are considered and the level of energy that can be saved is calculated. As a result of the calculations, depending on the month of the year, 12% to 29% difference is observed between energy requirement calculations based on the indoor temperature increases and energy requirement calculations based on outside temperature values.
显示更多 [+] 显示较少 [-]Arpa Çeşitlerinin Üretim, Pazarlama ve İşleme Açısından Önemi 全文
2017
Rahmi Taşcı | Zeki Bayramoğlu
Bu çalışma ile; Konya ilinde arpa üretim, pazarlama ve işleme aşamalarında arpa pazarlamasına etki eden kriterlerin araştırılması amaçlanmıştır. Çalışmada; Konya ilinde faaliyet gösteren; karma yem (37 adet) ve malt fabrikası (1 adet), arpa alım satımı yapan tüccarlar (50 adet) ve tarımsal faaliyetleri içinde arpa üretimine yer veren tarım işletmeleri (107 adet) ile yapılan anket sonuçları kullanılmıştır. Tarım işletmeleri tarafından arpa satımında fiyata etki ettiği düşünülen kriterlerin başında hektolitre ve arpanın içine başka bitki çeşidinin karışmaması öne çıkarken, arpa çeşitlerinin satış fiyatında önemli bir kriter olmadığı belirlenmiştir. Tüccarların arpa satın alırken göz önünde bulundurduğu en önemli kriter arpanın hektolitresi olup, bu kriteri arpanın rutubeti, rengi ve içindeki yabancı madde karışıklık oranı izlemektedir. Fabrikaların arpa satın alırken göz önünde bulundurdukları en önemli kriter arpanın rutubet oranı olarak belirlenirken, daha sonra arpanın hektolitresi ve içindeki yabancı madde karışıklık oranı gelmektedir. Malt sanayisi için ise; arpanın çeşidi alım kriterlerinde çok önemli bir faktör olup, bunu arpanın rutubet oranı ve rengi takip etmektedir.
显示更多 [+] 显示较少 [-]