Document Type : Research Paper
Authors
1
Research Assistant Professor of Agricultural Engineering Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran.
2
Assistant Professor, Soil and Water Research Department, Khouzestan Agricultural and Natural Resources Research and Education Center AREEO, Ahwaz, Iran
3
Assistant Professor, Soil and Water Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, AREEO, Ahwaz , Iran.
Abstract
In order to investigate the effects of two no biostimulants, amino acid (foliar application) and humic acid (soil application), on the morpho-physiological traits of sesame (Darab1 and local cvs) with drip irrigation on seed yield and water productivity indices (P, kg/ rial) and water productivity (WP, kg/m3) and economic water productivity (WP$, rials /m3), an experiment was conducted in one of the farms in Behbahan county in Khuzestan province (crop season 2021-02). The results of comparing the means based on t-Test indicated a significant superiority (P < 0.01) of the treatment with biostimulants in all the traits studied compared to the control treatment (no biostimulants). capsules, the number of seeds per capsule was equivalent to 79.4 and 68.4 seeds, P index was equivalent to 6.86 and 6.04 kg/million rials, WP was equivalent to 231.0 and 198.0 kg/m3, and WP$ was 28.7 and 20.7 thousand rials /m3, respectively. In both investigated fertilizer treatments, the Darab1 sesame cultivar showed a significant superiority over the local cultivar. Regression analysis results showed that among the yield components, the capsule trait per plant had the highest correlation of 0.822 with yield. Capsule per plant as one of the yield components had the highest positive and significant correlation (P < 0.01) with P, WP, and WP$ indices. The use of biostimulants under study led to a significant increase in yield components such as capsules per plant and seeds per capsule, resulting in increased yield and P, WP, and WP$ indices.
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