Yazar "Liberacki, Daniel" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Derinkuyu dry bean irrigation planning in semi-arid climate by utilising crop water stress index values
    (Polish Academy of Sciences Publishing House, 2023) Uçak, Ali B.; Atılgan, Atılgan; Korytowski, Mariusz; Koci?cka, Joanna; Liberacki, Daniel; Stachowski, Piotr; Saltuk, Burak
    This study was conducted to determine crop water stress index (CWSI) values and irrigation timing in the case of Derinkuyu dry bean (Phaseolus vulgaris L.). In 2017, dry beans were grown as the main crop according to the field design consisting of plots divided into randomised blocks. Irrigation treatment comprised full irrigation (I100) and irrigation issues with three different levels of water stress (I66, I33, I0). This study applied 602 mm of water under the I100 irrigation. The yield of Derinkuyu dry beans was equal to 3576.6 kg?ha–1 in I100 irrigation. The lower limit (LL) value, which is not necessary for the determination of CWSI, was obtained as the canopy–air temperature difference (Tc – Ta) versus the air vapour pressure deficit (VPD). The upper limit (UL) value, at which the dry beans were wholly exposed to water stress, was obtained at a constant temperature. The threshold CWSI value at which the grain yield of dry beans started to decrease was determined as 0.33 from the measurements made with an infrared thermometer before irrigation in I66 irrigation treatment. As a result, it can be suggested that irrigation should be applied when the CWSI value is 0.33 in dry beans. Furthermore, the correlation analysis revealed a negative correlation between grain yield and crop water stress index and a positive correlation between yield and chlorophyll content. According to variance analysis, significant relationships were found between the analysed parameters at p ? 0.01 and p ? 0.05. © 2023. The Authors.
  • [ X ]
    Öğe
    THE EFFECTS OF HIGH TEMPERATURE AND LOW HUMIDITY ON CROP WATER STRESS INDEX OF SEED PUMPKIN PLANTS (Cucurbita pepo L.) IN SEMI-ARID CLIMATE CONDITIONS
    (Univ Life Sciences Lublin, 2024) Ucak, Ali Beyhan; Kociecka, Joanna; Liberacki, Daniel; Saltuk, Burak; Atilgan, Atilgan; Stachowski, Piotr; Rolbiecki, Roman
    This study aimed to evaluate the effects of high temperature and low humidity on the crop water stress index (CWSI) of seed pumpkin plants grown under semi -arid climate conditions to determine the optimum irrigation time. This research unveils the critical impact of high temperature and low humidity on seed pumpkin growth, emphasizing the vital role of the CWSI in optimizing irrigation strategies and seed yield. Moreover, the relationship between CWSI, physiological parameters, and seed yield of the pumpkin was investigated. The mean CWSI values in the I70 (0.40) and I35 (0.56) treatments were 42% and 100% higher, respectively than those in the full irrigation (I100) treatment (0.28). While the I70 treatment showed manageable water stress with minimal impact, the I35 treatment experienced severe stress, significantly reducing crop growth and yield. The mean seed yield (SY) in the I70 treatment increased to 1245.2 kg ha(-1) compared to I35 (903.3 kg ha(-1)) but remained lower than I100 (1339.3 kg ha(-1)). The CWSI had negative correlations (p <= 0.01) with seed yield, chlorophyll content, and leaf area index, while it had positive correlations with water use efficiency and irrigation water use efficiency (p <= 0.01). This study showed that pumpkins could be grown successfully at 30% water deficit conditions, and a water deficit higher than 30% may cause a significant seed yield loss in semi -arid climate conditions. In addition, the results highlight the importance of optimal irrigation and CWSI monitoring for informed irrigation decisions and sustainable agricultural practices. Therefore, moderate water deficit (I70) can be adopted in pumpkin cultivation as an alternative to full irrigation.