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Research Article Open access CC BY 4.0

Impact of Fish Guano and Abscisic Acid on Physiological Traits of Grain Amaranth (Amaranthus cruentus L.) under Moisture Stress

A.M. Aliyu, S.U. Yahaya, A. Lado, E.A. Shittu, H.M. Aliyu, A.B. Yakubu, U.B. Ahmad, A. Muhammad, A.A. Manga

Asian Journal of Advances in Agricultural Research · pp. 1–14 · Published 28 Aug 2024

10.9734/ajaar/2024/v24i9541

Abstract

Field trials were conducted during the 2021 and 2022 at the Teaching and Research Farm of the Facultyof Agriculture Bayero University Kano (110 97′ 98.6′′N 80 42′03.7′′'E) and Research Farm of Aliko Dangote University of Science and Technology Wudil (11̊25′N 9̊E) to determine the impact of fish guano (FG) and abscisic acid (ABA) leaf area index (LAI), stomatal conductance(SC), photosynthetic active radiation (PAR) and relative water content (RWC) of grain amaranth under moisture stress conditions. Treatments consisted of moisture stress stages (vegetative, flowering and grain filling), FG (0, 0.1 and 0.2kg) and ABA concentrations (0, 20and 50 µmolL-1) and laid out in a split-plot design and replicated three times. Moisture stress was applied in the main plots, while FG and ABA treatments were applied in the subplots. Data was collected on LAI, SC, PAR and RWC and subjected to analysis of variance (ANOVA) using GENSTAT 17th edition software. Significant treatment means were separated using the Student Newman Keuls Test (SNK) at 5% probability level. In 2021 and 2022, the LAI and RWC of the plants at BUK and Wudil were significantly (p<0.001) boosted by the application of 0.2 kg FG levels and 50 µmolL-1 ABA. In the 2021 season, plants experiencing moisture stress during flowering exhibited significantly (p<0.05) higher RWC at BUK. Additionally, the application of 20 µmolL-1 ABA had a significant (p<0.05) effect on stomatal conductance at BUK and Wudil in both seasons. The results of this study suggested that FG and ABA could be useful strategies for improving the performance and resilience of grain amaranth crops in the face of moisture stress.

Fish Guano grain amaranth moisture stress abscisic acid fish guano

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