Potential of walnut (Juglans regia L.) nursery production and its economic importance in Turkey

In this study, data such as the total amount of nursery stock production in Turkey, walnut rootstock production (seedling rootstock), walnut nursery stock production per variety, number of certified nursery stock producers and distribution per province, number of producers with breeding blocks, walnut nursery stock export-imports and the amount of state funding per year have been statistically analyzed and the results provided. Data have been acquired from the Ministry of Food, Agriculture and Livestock, General Directorate of Plant Production. During the 2014-2016 period, the total certified and non-certified nursery stock production was 105,418,395 saplings. Apple plant production (30%) was followed by walnut plant production (16%) and grape plant production (11%). Looking at the distribution of walnut nursery enterprises per province, Balıkesir province was ranked first, Bursa province was ranked second, while Izmir province was ranked third. According to the General Directorate of Plant Production data, a total of 3,487,710 buds were used in walnut nursery stock production in Turkey during the 2014-2016 period. These consisted of Altınova-1, Bilecik, Şebin, Chandler, Fernette, Ferron, Franquette, Gültekin-1, Kaman 1, Kaplan-86, Maraş 18, Oğuzlar 77, Pedro, Sütyemez 1, Şen-1, Şen-2, Tokat-1, Yalova-1, Yalova-2, Yalova-3, Yalova-4 and Yavuz-1. During the 2005-2016 period, the amount of assistance provided for certified and non-certified walnut nursery stock production was TRY 100,785,483. © 2019 International Society for Horticultural Science. All rights reserved

Determination of the energy input-output analysis and economic efficiency of pumpkin seed {Cucurbita Pepo L.) production in Turkey: A case study of Nevsehir Province

In this study, the energy use of inputs and outputs employed by the enterprises producing pumpkin seed in Nevsehir's Central, Acigol, Urgup districts and towns in Turkey were determined. The inputs were classified into direct, indirect, renewable and non-renewable energy groups. For energy use efficiency calculation purposes; energy output-input ratio, specific energy, energy productivity and net energy calculations were performed. In the study, survey, questionnaire, observation, measurement and calculation methods were employed. Based on the "Proportional Sampling Method", the study was take place in Nevsehir's Central, Acigol and Urgup districts, where 23 villages were randomly selected from each district, combining to make up a total number of 23 villages and 198 enterprises. Regarding pumpkin seed production, energy input was calculated as 35905.24 MJ ha-1, while energy output was calculated as 9005.45 MJ ha-1 and energy output-input ratio was defined as 0.25. The composition of energy inputs is 45.08% (16184.42 MJ ha-1) chemical fertilizers energy, 32.42% electricity energy (11639.52 MJ ha-1), 9.14% (3282.87 MJ ha-1) diesel fuel energy, 8.98% (3222.79 MJ ha-1) irrigation water energy, 3.29% (1182.60 MJ ha-1) machinery energy, 0.43% (156.11 MJ ha-1) seed energy, 0.33% (119.21 MJ ha-1) human labour energy, 0.17% chemicals energy (60.72 MJ ha-1) and 0.16% (57 MJ ha-1) farmyard manure energy. Energy use efficiency, specific energy, energy productivity and net energy in pumpkin seed production were calculated as 0.25, 46.45 MJ kg- 1, 0.02 kg MJ- 1 and -26899.79 MJ ha-1, respectively. The consumed total energy input in pumpkin seed production could be classified as 50.87% direct, 49.13% indirect, 9.90% renewable and 90.10% non-renewable. Economic efficiency of pumpkin seed was calculated as 1.25. © 2020 Parlar Scientific Publications. All rights reserved