1st International Congress on Agricultural Structures and Irrigation, Antalya, Türkiye, 26 - 28 September 2018, cilt.1, ss.628
Abstract: In this study, growing possibility, yield and water use efficiency of pumpkin seed (Cucurbita pepo L.) as a second crop after triticale-Hungarian vetch mixture in semi-arid Kayseri conditions of Turkey were investigated. For these purposes, pumpkin seed production during normal growing season in the region was considered first treatment (D1), pumpkin seed production after Hungarian vetch-triticale but on non-cultivated area was second treatment (D2) and pumpkin seed production as a second crop after Hungarian vetch-triticale was third treatments (D3). Watering just after at 40 cbar (T40) and 60 cbar (T60) soil tensions were evaluated as sub irrigation treatments under D1, D2 and D3 main plots. The experiment was designed Completely Randomized Split Plots in Blocks and each treatment was replicated 4 times. According to results, pumpkin plants could be harvested when they reached to 1230 cumulative temperatures above 10C after sowing. Seed yield differences among growing seasons were found non-significant and 1070, 980 and 1038 kg.ha-1 seed yields obtained from D1, D2 and D3 treatments, respectively. Irrigations at 60 cbar soil tension yielded 11.7% higher seed yield than ones at 40 cbar. Pumpkin water consumption in the first (D1) and second production seasons (D2 and D3) were found as 498 and 438 mm, respectively while irrigation water use efficiency (WUE) were 0.20 and 0.24 kg.m-3 and higher 1000-seed weight was obtained for the first season. It is concluded that second crop pumpkin culture after Hungarian vetch-triticale mixtures was more favorable for the farmers of central Anatolian since they were able to grow both pumpkin seeds and forage crops within the same growing season.
Keywords: Pumpkin seed, Cucurbita pepo L., different growing seasons, second crop, water use efficiency