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    DETERMINATION OF SESAME (SESAMUM INDICUM L.) GENOTYPES TOLERANT TO WATER STRESS AND STRESS TOLERANCE INDICATORS BY DRIP IRRIGATION IN SEMI-ARID CLIMATE CONDITIONS
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Arslan, Huseyin; Ozcinar, Aynur Bilmez; Arslan, Dogan; Bayraktar, Onder Volkan
    The purpose of this study was to determine the water stress tolerance of sesame genotypes (Arslanbey, Halisbey and H2) grown in water-stress free (SF) (I-100), water-stress (WS) (I-70) and extreme water stress (EWS) (I-35) conditions in 2016 and 2017. The experiment was carried out in a split plot design within randomized blocks with three replications. Variance analysis revealed statistically significant (p<0.01) differences between genotypes. The highest yield (HY) (706.56 kg ha(-1)) for two-year average in extreme water stress (EWS) treatment was obtained in the interaction of I(35)xArslanbey which had a low plant water stress index (CWSI) (0.56) and a high chlorophyll content (CC) (28.95 spad). The lowest yield (LY) (580.16 kg ha(-1)) was obtained in the interaction of I(35)xH2 which had a high CWSI (0.63) and a low CC (27.39 spad). In water stress free (SF) treatment, the HY (1297.07 kg ha(-1)) was obtained in the I(100)xArslanbey interaction which had a low CWSI (0.16) and high CC (43.83 spad), while the LY (1125.51 kg ha(-1)) was determined in the interaction of I(100)xH2 which had a high CWSI (0.24) and a low CC (38.60 spad). Significant correlations (p<0.01) were determined among all investigated traits. The results of the study revealed that Arslanbey sesame genotype is a prominent variety in terms of yield both under EWS and SF treatments and optimum efficiency in irrigation water utilization. Therefore, Arslanbey genotype was considered to be tolerant to water stress and can be evaluated in water stress tolerance studies. In addition, the findings of the study indicated that CWSI and CC values of sesame plants can be used as stress screening parameters (tolerance indicator) in breeding studies for the selection of water stress tolerant sesame varieties.
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    Determination of sesame (Sesamumindicum L.) genotypes tolerant to water stress and stress tolerance indicators by drip irrigation in semi-arid climate conditions
    (Parlar Scientific Publications, 2020) Ucak, Ali Beyhan; Arslan, Huseyin; Ozcinar, Aynur Bilmez; Arslan, Dogan; Bayraktar, Onder Volkan
    The purpose of this study was to determine the water stress tolerance of sesame genotypes (Arslanbey, Halisbey and H2) grown in water-stress free (SF) (I1 0 0), water-stress (WS) (I7 0) and extreme water stress (EWS) (I3 5) conditions in 2016 and 2017. The experiment was carried out in a split plot design within randomized blocks with three replications. Variance analysis revealed statistically significant (p<0.01) differences between genotypes. The highest yield (HY) (706.56 kg ha- 1) for two-year average in extreme water stress (EWS) treatment was obtained in the interaction of I3 5xArslanbey which had a low plant water stress index (CWSI) (0.56) and a high chlorophyll content (CC) (28.95 spad). The lowest yield (LY) (580.16 kg ha- 1) was obtained in the interaction of I3 5xH2 which had a high CWSI (0.63) and a low CC (27.39 spad). In water stress free (SF) treatment, the HY (1297.07 kg ha- 1) was obtained in the I1 0 0xArslanbey interaction which had a low CWSI (0.16) and high CC (43.83 spad), while the LY (1125.51 kg ha- 1) was determined in the interaction of I1 0 0xH2 which had a high CWSI (0.24) and a low CC (38.60 spad). Significant correlations (p<0.01) were determined among all investigated traits. The results of the study revealed that Arslanbey sesame genotype is a prominent variety in terms of yield both under EWS and SF treatments and optimum efficiency in irrigation water utilization. Therefore, Arslanbey genotype was considered to be tolerant to water stress and can be evaluated in water stress tolerance studies. In addition, the findings of the study indicated that CWSI and CC values of sesame plants can be used as stress screening parameters (tolerance indicator) in breeding studies for the selection of water stress tolerant sesame varieties. © b y PSP
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    DETERMINATION OF THE PERFORMANCE OF SOME SOYBEAN (GLYCINE MAX (L.) MERR.) VARIETIES / LINES
    (Parlar Scientific Publications (P S P), 2018) Arslan, Huseyin; Onder-Ucar, Ozge; Arslan, Dogan
    This study was conducted to determine the performance of some soybean (Glycine max (1.) men.) varieties/lines in the 2014 and 2015 growing seasons. It was designed as a randomized block experimental design with four replications at the Kezer Campus of Siirt University. Essential factors such as yield (kg ha(-1)), plant height (cm), first pod height (cm), number of pods per plant (number/plant), and thousand-seed weight (g) were determined. According to the results of pooled two-year variance analysis, line 834 produced the lowest seed yield (1798.7 kg ha(-1)), while variety Gapsoy 16 produced the highest seed yield (2672.1 kg ha(-1)). Besides variety Gapsoy 16, line 1022 (2639.2 kg ha(-1)) came to the forefront in terms of seed yield. Considering the first pod height, line 1022 reached the highest value in two years. The first pod height of the first year in general appeared to be higher than that of the second year. This may be associated with the timing of first irrigation. The examined characteristics varied under the influence of different climatic and soil conditions in both years. Based on the two-year average oil ratios, variety Turksoy had the highest value (17.35%). With regard to the two-year average protein ratios, line 1021 had the highest ratio (34.14%). As a result, the differences between the characteristics of lines/varieties and years were found to be statistically significant. Results of the two-year study show that soybean can be grown successfully in Siirt province if irrigated and that variety Gapsoy 16 and line 1022 give the highest yields.
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    Determination of the performance of some soybean (Glycine max (L.) merr.) varieties/lines
    (Parlar Scientific Publications, 2018) Arslan, Huseyin; Onder-Ucar, Ozge; Arslan, Dogan
    This study was conducted to determine the performance of some soybean (Glycine max (l.) merr.) varieties/lines in the 2014 and 2015 growing seasons. It was designed as a randomized block experimental design with four replications at the Kezer Campus of Siirt University. Essential factors such as yield (kg ha-1), plant height (cm), first pod height (cm), number of pods per plant (number/plant), and thousand-seed weight (g) were determined. According to the results of pooled twoyear variance analysis, line 834 produced the lowest seed yield (1798.7 kg ha-1), while variety Gapsoy 16 produced the highest seed yield (2672.1 kg ha-1). Besides variety Gapsoy 16, line 1022 (2639.2 kg ha-1) came to the forefront in terms of seed yield. Considering the first pod height, line 1022 reached the highest value in two years. The first pod height of the first year in general appeared to be higher than that of the second year. This may be associated with the timing of first irrigation. The examined characteristics varied under the influence of different climatic and soil conditions in both years. Based on the two-year average oil ratios, variety Türksoy had the highest value (17.35%). With regard to the two-year average protein ratios, line 1021 had the highest ratio (34.14%). As a result, the differences between the characteristics of lines/varieties and years were found to be statistically significant. Results of the two-year study show that soybean can be grown successfully in Siirt province if irrigated and that variety Gapsoy 16 and line 1022 give the highest yields. © by PSP.
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    Determination of water-efficiency relationships and silage quality characteristics of the maize species for silage(Zea mays L.) the first product grown under semi-arid climate conditions
    (Parlar Scientific Publications, 2016) Ucak, Ali Beyhan; Gencoglan, Cafer; Bagdatli, M. Cuneyt; Turan, Nizamettin; Arslan, Huseyin; Inal, Behcet
    In this study, a field study was carried out to determine the effect of different irrigation water amounts on dry matter efficiency and silage quality features of species of corn for silage P32K61, P31Y43, P30B74 and the relationship of water and dry matter, as well as the threshold value of the dry substance to be used in silage quality estimation by leveraging such relationship. The study was planned as three repeats in a trial pattern of divided parcels in randomized blocks. Irrigation program was established by reapplication of 100% (I100), 70% (I70), 35% (I35) of the water consumed every 7 days with the drip irrigation method. Thus, the irrigation consists of 1 full and 2 different deficit irrigation. In the study, irrigation water amount applied to I100, I70 and I35 of types P32K61, P31Y43 and P30B74 was 637-653-666; 491-495-509; 342-363-371 mm, respectively, seasonal plant water consumption values were 705-714-738; 559-554-583mm, dry matter efficiency values ranged from 24.38-24.29-32.36, 23.26-23.33-25.5, and 12.8-14.46-14.13 t ha-1. Linear relations were determined between dry matter (DM) efficiency of the species and irrigation water (I) as DM=20.57I+6369(r2=0.997??), DM=30.95I+4340(r2=0.999??), Y=36.14I+5826 (r2=0.998??);and between dry matter-plant water consumption (ETa) values as Y=26.02ETa+832.1(r2=0.969??), Y=36.55ETa- 22.83 (r2=0.995??), Y=42.75ETa-1949 (r2=0.997??). The highest and lowest protein amounts by irrigation were 8.67% in the interaction of I100 irrigation and P32K61 species and 6.14% in the interaction of I35 irrigation and P31Y43 species, respectively; digestible dry matter ratio was 70% in the interaction of I100 irrigation and P30B74 species and 60% the interaction of I35 irrigation and P31Y43, respectively. No statistically significant relation between the ADF (Acid Detergent Fiber) and NDF (Neutral Detergent Fiber) values was found. The highest water consumption efficiency was 4.38 kg/da-mm in I100 irrigation and 3.37 kg/da-mm in I35 irrigation. In addition, thecorrelation coefficient between ET, dry matter and protein amount was r2:0.81?? and r2:0.80??, and a statistically significant positive relationship was observed (p<0.01) between ETa, dry matter and protein amount. As a result of statistical and economic analyses, threshold dry matter efficiency value on which the silage quality starts to drop was determined at 25.5 t ha-1 in I70 irrigation. © 2016 PSP.
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    Drought stress resistance indicators of chickpea varieties grown under deficit irrigation conditions
    (Peerj Inc, 2023) Ucak, Ali Beyhan; Arslan, Huseyin
    The aim of this study was to determine the drought stress resistance of three chickpea cultivars (Inci, Hasanbey and Seckin) grown under water deficit conditions and to discuss the use of yield, crop water stress index and chlorophyll index values as drought stress tolerance indicators in breeding studies. Three drought stress levels, (full irrigation = no stress -I100, deficit irrigation = moderate stress -I50, and no irrigation = severe stress -I0) were used as irrigation treatments. The highest seed yield (1,984 kg ha-1) in severe stress conditions was recorded for the Inci cultivar with a low crop water stress index (CWSI) (0.50) and high chlorophyll index (33.60 SPAD). The lowest seed yield (1,783.66 kg ha-1) in I0 treatment was noted for the Seckin cultivar which had a high CWSI (0.58) and low chlorophyll index (32.88 SPAD). The highest seed yield (2,566.33 kg ha-1) in full irrigation was recorded for the Inci cultivar which had a low CWSI (0.19) and high chlorophyll index (44.39 SPAD), while the lowest seed yield (2,328.00 kg ha-1) in I100 treatment was recorded for the Seckin cultivar which had a high CWSI (0.26) and low chlorophyll index (42.12 SPAD). The seed yield of the Hasanbey cultivar in both severe stress (1,893 kg ha-1) and full irrigation (2,424.00 kg ha-1) conditions was between Inci and Seckin varieties. The chlorophyll index and yield had a significant positive (r = 0.877) correlation, while a significant negative (r = -0.90) relationship was determined between CWSI and yield. Seed yield of the Inci cultivar in I0 and I100 treatments and water use efficiency revealed that the Inci cultivar is resistant to drought stress. Therefore, the Inci cultivar can be used in drought stress tolerance studies. In addition, the CWSI and chlorophyll index values can be employed as resistance indicators in chickpea breeding studies to determine the drought resistant chickpea cultivars.
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    Effect of deficit irrigation in different phenolocical periods on yield and yield parameters of sunflower {iieliantiils annuus l.)
    (Parlar Scientific Publications, 2020) Ucak, Ali Bevhan; Erman, Murat; Arslan, Huseyin; Arslan, Dogan
    This study was carried out to investigate the effects of deficit irrigation in different phenological periods on some yield and agronomic characteristics of sunflower (Helianlhus Annuus L.) grown under semi-arid climate conditions during 2018 and 2019 growing seasons. Irrigation treatments were full irrigation (control, Iioo), 30% water deficit (I70) and 65% water deficit (I35). The results indicated that sunflower yield significantly varied with the phenological periods and the water deficit treatments (p<0.01). For the highest water deficit (I35) condition; the highest yield (2463.33 kg ha"1), the lowest CWSI (0.53) and the highest chlorophyll content (CC) (34.33 spad) in the 2018 were recorded in vegetative period (VP), while the lowest yield (2290.00 kg ha1), the highest CWSI (0.59) and the lowest CC (32.00 spad) were obtained in the flowering period (FP). For the full irrigation condition (Iioo), the highest yield (3873.33 kg ha'1), the lowest CWSI (0.18) and the highest CC (43.33 spad) were recorded in flowering and pollination period (FPP), while the lowest yield (3796.66 kg ha"1), the highest CWSI (0.22) and the lowest CC (41.66 spad) were obtained in VP. In the second year, the highest yield (2350.00 kg ha1), the lowest CSW1 (0.52) and the highest CC (36.00 spad) for the I35 treatment were determined in VP, while the lowest yield (2350.00 kg ha1), the highest CWSI (0.58) and the lowest CC (33.00 spad) were obtained in FPP peri-od. For the Iioo treatment, the highest yield (3946.66 kg ha"1), the lowest CWSI (0.17) and the lowest CC (44,33 spad) were recorded in FPP period, while the lowest yield (3856.63 and 3886.65 kg ha1) was obtained in VP and SMP period. The results revealed a significant effect of water deficit and phenological period interaction on seed yield of sunflower. The effects of deficit irrigation in different phenological periods of sunflower on yield and yield parameters were significant. Restricted irrigation during flowering and pollination period should be avoided for an economical and profitable sunflower cultivation. The irrigation can be restricted in the vegetative period, if water deficit is a necessity. Briefly, the results proved that sunflower production is suitable for a sustainable, profitable and disease-free cultivation in semi-arid ecological conditions. © 2020 Parlar Scientific Publications. All rights reserved.
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    EFFECT OF DEFICIT IRRIGATION IN DIFFERENT PHENOLOGICAL PERIODS ON YIELD AND YIELD PARAMETERS OF SUNFLOWER (HELIANTHUS ANNUUS L.)
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Erman, Murat; Arslan, Huseyin; Arslan, Dogan
    This study was carried out to investigate the effects of deficit irrigation in different phenological periods on some yield and agronomic characteristics of sunflower (Helianthus Annuus L.) grown under semi-arid climate conditions during 2018 and 2019 growing seasons. Irrigation treatments were full irrigation (control, I-100), 30% water deficit (I-70) and 65% water deficit (I-35). The results indicated that sunflower yield significantly varied with the phenological periods and the water deficit treatments (p <= 0.01). For the highest water deficit (I-3(5)) condition; the highest yield (2463.33 kg ha(-1)), the lowest CWSI (0.53) and the highest chlorophyll content (CC) (34.33 spad) in the 2018 were recorded in vegetative period (VP), while the lowest yield (2290.00 kg ha(-1)), the highest CWSI (0.59) and the lowest CC (32.00 spad) were obtained in the flowering period (FP). For the full irrigation condition (I-100), the highest yield (3873.33 kg ha(-1)), the lowest CWSI (0.18) and the highest CC (43.33 spad) were recorded in flowering and pollination period (FPP), while the lowest yield (3796.66 kg ha'), the highest CWSI (0.22) and the lowest CC (41.66 spad) were obtained in VP. In the second year, the highest yield (2350.00 kg ha(-1)), the lowest CSWI (0.52) and the highest CC (36.00 spad) for the 1 35 treatment were determined in VP, while the lowest yield (2350.00 kg ha(-1)), the highest CWSI (0.58) and the lowest CC (33.00 spad) were obtained in FPP period. For the I-100 treatment, the highest yield (3946.66 kg ha(-1)), the lowest CWSI (0.17) and the lowest CC (44,33 spad) were recorded in FPP period, while the lowest yield (3856.63 and 3886.65 kg ha(-1)) was obtained in VP and SMP period. The results revealed a significant effect of water deficit and phenological period interaction on seed yield of sunflower. The effects of deficit irrigation in different phenological periods of sunflower on yield and yield parameters were significant. Restricted irrigation during flowering and pollination period should be avoided for an economical and profitable sunflower cultivation. The irrigation can be restricted in the vegetative period, if water deficit is a necessity. Briefly, the results proved that sunflower production is suitable for a sustainable, profitable and disease-free cultivation in semi-arid ecological conditions.
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    GENOTYPE REACTION AND EFFECT OF THE SOWING TIME UNDER ARID ECOLOGICAL CONDITIONS IN SAFFLOWER (CARTHAMUS TINCTORIUS L.)
    (Parlar Scientific Publications (P S P), 2018) Kose, Arzu; Hatipoglu, Halil; Arslan, Huseyin
    The aim of the study was to determine effect of winter and spring sowing on some agronomic and quality characteristics of eighteen safflower lines developed by selection breeding method and two varieties in safflower (Carthamus tinctorius L.). The experiment was conducted at the GAP Koruklu Agricultural Research and Development Station, south of Sanliurfa province, using randomized complete block split-plot design with three replicates in 20112012 and 2012-2013 years. According to research mean of seed yield 1862.3 kg ha(-1) and 2695.9 kg ha(-1), number of head per plant 12.8 and 16.7, 1000 seed weight 39.6 g and 41.5 g, plant height 74.3 cm and 121.0 cm, oil content 32.5 % and 32.8 %, oil yield 642.7 kg ha(-1) and 915.5 kg ha(-1) were recorded in spring and winter sowing time, respectively. In this study, sowing time and genotype has important effect on seed and oil yield more affected by environmental conditions. Winter sowing is the most suitable time to obtain higher seed and oil yield under arid condition. Line GAP/UR/36-12 and GEGAP/UR/36-1 can recommend for seed and oil yield in both sowing time especially winter sowing time production arid ecological condition.
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    THE EFFECT OF DIFFERENT IRRIGATION APPLICATIONS ON WATER-YIELD RELATIONS AND QUALITY TRAITS OF LAVENDAN (LAVANDULA INTERMEDIA)
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Arslan, Dogan; Arslan, Huseyin; Bayraktar, O. Volkan; Aslan, Emine
    This study was carried out for two years in 2016 and 2017 with the aim of investigating the effects of different irrigation treatments (I0, I50, I100) on some agronomic and quality traits of lavender (Lavandula intermedia) grown under semi-arid climate conditions. Drug flower yield in 2016 was 72.95 kg da(-1) while it was 93.92 kg da(-1) in 2017. The effect of irrigation on yield was not statistically significant, though the yield in 50% irrigation treatment was relatively higher compared to the other two treatments. The results of essential oil content and yield in 2017 were statistically significant and the highest essential oil content (5.5%) and yield (5.17 kg ha(-1)) were obtained from I100 irrigation treatment. Although the results of essential oil ratio and yield in 2016 were not statistically significant, similar to 2017, the highest essential oil ratio and yield (4.75%, 3.27 kg ha(-1)) were obtained from I100 irrigation treatment. The results indicated that irrigation had a significant positive effect on the essential oil content and yield of lavender. The ratio of linalyl acetate, which is the most important component of essential oil, ranged between 18.62 and 22.54% in 2016 and 2017. The results showed that lavender (Lavandula intermedia) can be grown well under semi-arid ecological conditions, however, the continuation of studies on lavender would be useful in making more accurate decisions. Scientific studies focusing on the effects of different irrigation treatments on characteristics of lavender are rare, thus this research is one of the first studies published on the subject. The results demonstrated the importance of irrigation in lavender (Lavandula intermedia) cultivation for essential oil production. The results revealed that irrigation in lavender cultivation has no significant effect on flower yield, but full irrigation (I100) is important to obtain higher essential oil yield.
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    THE EFFECT of DIFFERENT IRRIGATION APPLICATIONS on WATER-YIELD RELATIONS and QUALITY TRAITS of LAVENDAN {LAVANDULA INTERMEDIA)
    (Parlar Scientific Publications, 2020) Ucak, Ali Beyhan; Arslan, Dogan; Arslan, Huseyin; Bayraktar, O Volkan; Asian, Emine
    This study was carried out for two years in 2016 and 2017 with the aim of investigating the effects of different irrigation treatments (I0, I50, I100) on some agronomic and quality traits of lavender (Lavandula intermedia) grown under semi- A rid climate conditions. Drug flower yield in 2016 was 72.95 kg da-1 while it was 93.92 kg da-1 in 2017. The effect of irrigation on yield was not statistically significant, though the yield in 50% irrigation treatment was relatively higher compared to the other two treatments. The results of essential oil content and yield in 2017 were statistically significant and the highest essential oil content (5.5%) and yield (5.17 kg ha-1) were obtained from I100 irrigation treatment. Although the results of essential oil ratio and yield in 2016 were not statistically significant, similar to 2017, the highest essential oil ratio and yield (4.75%, 3.27 kg ha-1) were obtained from I100 irrigation treatment. The results indicated that irrigation had a significant positive effect on the essential oil content and yield of lavender. The ratio of linalyl acetate, which is the most important component of essential oil, ranged between 18.62 and 22.54% in 2016 and 2017. The results showed that lavender (Lavandula intermedia) can be grown well under semi-arid ecological conditions, however, the continuation of studies on lavender would be useful in making more accurate decisions. Scientific studies focusing on the effects of different irrigation treatments on characteristics of lavender are rare, thus this research is one of the first studies published on the subject. The results demonstrated the importance of irrigation in lavender (Lavandula intermedia) cultivation for essential oil production. The results revealed that irrigation in lavender cultivation has no significant effect on flower yield, but full irrigation (1100) is important to obtain higher essential oil yield. © 2020 Parlar Scientific Publications. All rights reserved.