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Full-Text Articles in Forest Sciences
Possibilities Of Using Dual Kc Approach In Predicting Crop Evapotranspiration Ofsecond-Crop Silage Maize, Neşe Üzen, Öner Çeti̇n, Ramazan Yolcu
Possibilities Of Using Dual Kc Approach In Predicting Crop Evapotranspiration Ofsecond-Crop Silage Maize, Neşe Üzen, Öner Çeti̇n, Ramazan Yolcu
Turkish Journal of Agriculture and Forestry
The purposes of this study were to develop a dual crop coefficient (Kc) using FAO-56 methodologies and to compare crop evapotranspiration (ETKc) measured under field conditions for second-crop silage maize in the Southeastern Anatolia Region of Turkey with the ETc estimated using FAO-56 dual Kc methodologies. For this study, field experiments were conducted in the 2011 and 2012 growing seasons, and the results were evaluated. To compute dual Kc (Kcb and Ke), all climatological data involving the seedling and harvesting dates, growth stages, water holding of soil at field capacity and at wilting point, soil evaporation layer, and crop characteristics …
Effects Of Different Irrigation Methods And Plant Density On Silage Yield And Yield Components Of Pr 31y43 Hybrid Corn Cultivar, Muhammet Karaşahi̇n
Effects Of Different Irrigation Methods And Plant Density On Silage Yield And Yield Components Of Pr 31y43 Hybrid Corn Cultivar, Muhammet Karaşahi̇n
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the effects of different irrigation methods (drip I1, subsoil drip I2, and subsoil capillary I3) and different plant densities (102,040 plants ha^{-1}, D1; 119,040 plants ha^{-1}, D2; and 142,850 plants ha^{-1}, D3) on the silage yield and yield components of PR 31Y43 hybrid corn cultivar (Zea mays L. indentata S.) in the years 2011 and 2012 under the ecological conditions of Eskipazar-Karabük. In both research years, the plant densities were statistically significant for stem diameter, fresh ear ratio, fresh plant weight, silage, and dry matter yield. The highest stem diameter, fresh ear ratio, and …
Effect Of Wetted Soil Area On Trunk Growth, Yield, And Fruit Quality Of Drip-Irrigated Sour Cherry Trees, Osman Yildirim, Hati̇ce Dumanoğlu, Nurdan Güneş, Murat Yildirim, Ahmet Aygün, Beki̇r Şan
Effect Of Wetted Soil Area On Trunk Growth, Yield, And Fruit Quality Of Drip-Irrigated Sour Cherry Trees, Osman Yildirim, Hati̇ce Dumanoğlu, Nurdan Güneş, Murat Yildirim, Ahmet Aygün, Beki̇r Şan
Turkish Journal of Agriculture and Forestry
The effect of wetted soil area on trunk growth, yield, and fruit quality in drip-irrigated Kütahya sour cherry (Prunus cerasus L.) trees grafted on mahaleb (Prunus mahaleb L.) seedlings was investigated over 3 seasons in a semiarid zone of Central Anatolia, Turkey. Percentages of wetted soil area ranging from 8.8% to 35.6% were obtained by applying 7 treatments consisting of 1 or 2 lateral drip lines per tree row and various dripper numbers per tree. Adequate irrigation was applied to all treatments based on daily evapotranspiration values estimated by the FAO-modified Penman-Monteith equation. The highest yield was generally obtained at …
Effects Of Cultural Practices On Weed Flora In Virginia (Flue-Cured) Organic Tobacco (Nicotiana Tabacum L.): Green Manure And Irrigation Systems, Anestis Karkanis, Dimitrios Bilalis, Aspasia Efthimiadou, Panagiotis Efthimiadis
Effects Of Cultural Practices On Weed Flora In Virginia (Flue-Cured) Organic Tobacco (Nicotiana Tabacum L.): Green Manure And Irrigation Systems, Anestis Karkanis, Dimitrios Bilalis, Aspasia Efthimiadou, Panagiotis Efthimiadis
Turkish Journal of Agriculture and Forestry
Organic tobacco is a new industrial crop. Field experiments were conducted, during 2005-2006, to determine the effects of irrigation system and green manure on weed flora in organic tobacco crops (Nicotiana tabacum cv. NC 71). The experiments were designed as a split plot design with 4 replicates, 2 main plots (drip and sprinkler irrigation), and 3 sub-plots (vetch and red clover as green manure, and control). The greatest number and dry weight of weeds was observed in sprinkler irrigation. Our results indicate that weed distribution under drip and sprinkler irrigation is related not only to the surface soil water content …
Determination Of The Head Losses In Metal Body Disc Filters Used In Drip Irrigation Systems, Vedat Demi̇r, Hüseyi̇n Yürdem, Arzu Yazgi, Adnan Deği̇rmenci̇oğlu
Determination Of The Head Losses In Metal Body Disc Filters Used In Drip Irrigation Systems, Vedat Demi̇r, Hüseyi̇n Yürdem, Arzu Yazgi, Adnan Deği̇rmenci̇oğlu
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine the head losses in several type metal body disc filters manufactured by domestic companies. In order to meet the objective, three different filter designs (L, LT and Y type), each at four different inlet and outlet pipe diameters, were used to measure the head losses at different flow rates in the laboratory. A total of sixteen filters manufactured by three domestic companies (A, B and C) and two different disc elements (linear and curly) were taken into consideration in this study. A comparison of the different filter designs in terms of measured …
Effects Of Different Irrigation Programs On The Growth, Yield, And Fruit Quality Of Drip-Irrigated Melon, Osman Yildirim, Ni̇lgün Halloran, Şeyda Çavuşoğlu, Nesli̇han Şengül
Effects Of Different Irrigation Programs On The Growth, Yield, And Fruit Quality Of Drip-Irrigated Melon, Osman Yildirim, Ni̇lgün Halloran, Şeyda Çavuşoğlu, Nesli̇han Şengül
Turkish Journal of Agriculture and Forestry
A field study was conducted in Ankara, a semi-arid region of Central Anatolia, Turkey, on clay-loamy soils in the vegetation seasons of 2005 and 2006. Kırkağaç melon cultivar (Cucumis melo L. cv. Kırkağaç) was irrigated by the drip method from transplantation to the beginning of the flowering (IS_f), fruit setting (IS_{fs}), ripening (IS_r), and harvesting (IS_h) periods. Water amounting to 50% (P_{50}), 75% (P_{75}), and 100% (P_{100}) of full irrigation water were applied. Some analyses were carried out regarding the growth, yield, and fruit quality parameters in these irrigation programs. Moreover, the amount of water, the seasonal evapotranspiration, and the …
Development Of A Mathematical Model Using Dimensional Analysis For Predicting The Friction Losses In Drip Irrigation Laterals With Cylindrical Type In-Line Emitters, Vedat Demi̇r, Hüseyi̇n Yürdem, Adnan Deği̇rmenci̇oğlu
Development Of A Mathematical Model Using Dimensional Analysis For Predicting The Friction Losses In Drip Irrigation Laterals With Cylindrical Type In-Line Emitters, Vedat Demi̇r, Hüseyi̇n Yürdem, Adnan Deği̇rmenci̇oğlu
Turkish Journal of Agriculture and Forestry
This paper presents a prediction model developed using dimensional analysis for friction losses in drip irrigation laterals. Drip irrigation laterals with cylindrical type in-line emitters placed at different spacings ranging from 0.2 to 1 m were considered. The parameters affecting the variation in friction losses in laterals were defined as dimensionless terms using Buckingham's pi theorem. In order to develop a model, experimental friction loss data from 14 different drip irrigation pipes, and some domestic and some imported ones with the above-mentioned spacings were used. The model developed in this study accounted for 98.7% of the variation in the data. …
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Turkish Journal of Agriculture and Forestry
Trickle irrigation systems' efficiency depends on system uniformity, which is determined by water discharge uniformity from emitters. It is impossible to produce 2 identical emitters due to manufacturing variations. The manufacturer's coefficient of variance is used as a measure of discharge variations of emitters. In this study, manufacturers' reported discharge rates and coefficients of manufacturing variation (CVm) values were compared with test results for various types of in-line emitters manufactured by 4 different companies in Turkey. A total of 9 drip irrigation lines, comprising 7 non-compensating and 2 compensating emitters, were tested at 50, 100, 150, 200 and 250 kPa …
Effects Of Different Irrigation Programs On The Growth Of Cotton Under Drip Irrigation, Ahmet Ertek, Riza Kanber
Effects Of Different Irrigation Programs On The Growth Of Cotton Under Drip Irrigation, Ahmet Ertek, Riza Kanber
Turkish Journal of Agriculture and Forestry
This study was conducted to determine of effects the cotton plant growth of different irrigation programs in a drip system. The amount of water applied was based on free surface evaporation from a screened Class-A Pan. Irrigation treatments consisted of two different irrigation intervals (I1: 5; I2: 10 days), and three plant-pan coefficients (Kcp1: 0.75; Kcp2: 0.90 and Kcp3: 1.05) and two different wetted percentages (P1: 0.70 and P2: based on cover percentage of the crop). The first irrigation was applied when the available soil moisture in the 120 cm depth in the profile was at 40%. According to the …