نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی اب دانشگاه زابل
2 گروه مهندسی آب، دانشکده آب و خاک، دانشگاه زابل
3 گروه مهندسی آب دانشکده آب و خاک دانشگاه زابل
4 گروه زراعت، دانشکده کشاورزی، دانشگاه زابل
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was conducted in order to investigate the effect of seaweed extract on the yield and water use productivity of sweet pepper under water stress. So far, no research has been conducted in this field in the Sistan Plain. The present research was conducted in February 2024 in a research farm located in Zahak city in the form of a split plot design in the form of a randomized complete block in three replications. The treatments include 3 levels of irrigation water amount (I1, I2, I3, respectively equivalent to 60, 80 and 100% of the field capacity of the soil) and spraying different concentrations of seaweed extract (SE1, SE2, SE3 and SE4, respectively equivalent to 0, 0.5, 1.5 and 3 gr/lit). Foliar spraying of zero treatment (control treatment without seaweed) was done with distilled water. Sampling of the treatments was done in order to determine their appearance characteristics in time intervals once every two weeks and during the growth period of sweet pepper. These parameters included plant height and leaf area index. The first fruit harvest was done in the middle of May 2024 and a total of 8 harvests were done.The results showed that the effect of seaweed and irrigation water on the measured parameters was significant at the probability level of one and five percent. The highest yield and its components were obtained from the 100% water requirement treatment, which was not significantly different from the 80% water requirement treatment. The use of seaweed extract reduced the negative effects of drought stress. The most positive effect of seaweed extract was obtained from the treatment of 3 grams per liter of seaweed extract. The highest height (96.4 cm), fruit diameter (1.7 cm), fruit weight (92.5 gr), yield (32.8 ton/ha), root volume (105.6 cm3) cube) and root length (51.7 cm) was obtained from I3SE4 treatment, which was not significantly different from I2SE4 treatment. Considering that the highest water productivity (4.33 kg/m3) was obtained from I2SE4 treatment, therefore this treatment (consumption of 3 gr/lit of seaweed extract and the amount of irrigation water equal to 80% of the field capacity of the soil) is introduced as the best treatment.
کلیدواژه‌ها [English]
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