The effect of wood vinegar and paral aminofol amino acid on the quantitative and qualitative characteristics of greenhouse cucumber (Cucumis sativus cv. Keyhan)

Paral aminofol amino acid and wood vinegar, due to their strengthening and regulatory properties, can improve plant growth, nutrient uptake, and product quality. This research investigated the effects of these compounds on the growth and quantitative and qualitative characteristics of the 'Keyhan' cucumber cultivar in a hydroponic greenhouse in Orzueeyeh County, Kerman Province. Treatments of wood vinegar (۰, ۲, ۴, and ۶ mg/L) and Paral aminofol amino acid (۰, ۰.۵, ۱, and ۱.۵ mg/L) were applied as solutions in drip irrigation water simultaneously at three stages: the four-leaf stage, flowering, and harvest. Irrigation was performed every four days, and the treatments were supplied to the plants with the irrigation water. The treatment with ۲ mg/L wood vinegar increased plant height and stem diameter by ۶۹.۵۶% and ۱۱۷.۸۵%, respectively. The highest number of fruits was observed with the treatment of ۱.۵ mg/L amino acid and ۲ mg/L wood vinegar (۴۱.۳۳ fruits), and the greatest fruit length was observed with the treatment of ۱.۵ mg/L amino acid and ۶ mg/L wood vinegar (۱۴.۸ cm). Fruit firmness increased to ۲۲.۹۲ kg/cm² with the treatment of ۱.۵ mg/L amino acid and ۲ mg/L wood vinegar, and fruit weight increased by ۵۱.۳۶ grams with the treatment of ۱.۵ mg/L amino acid and ۶ mg/L wood vinegar. The results showed that all treatments decreased soluble solids content compared to the control, with the greatest reduction observed with the ۱.۵ mg/L amino acid and ۲ mg/L wood vinegar treatments. Furthermore, the highest increase in chlorophyll a was observed in the treatment of ۲ mg/L wood vinegar without amino acid and in the combination of ۰.۵ mg/L amino acid with ۶ mg/L wood vinegar. The treatment of ۱.۵ mg/L amino acid and ۲ mg/L wood vinegar resulted in increased levels of chlorophyll b, carotenoids, phenols, flavonoids, and antioxidant capacity compared to the control. The results indicated that the simultaneous application of these two substances in hydroponic conditions can significantly improve plant growth and product quality and is recommended as an effective method for high-yield cucumber production.

کلیدواژه ها:

Antioxidant activity ، Amino acid ، Wood vinegar ، Fruit quality ، Physiological activities ، آنتی‎اکسیدان ، اسیدآمینه ، سرکه چوب ، کیفیت میوه ، فعالیت‎های فیزیولوژیکی