Improving the yield and fruit quality of Bidaneh-Sefid grapes under deficit irrigation by application of zeolite and farmyard manure

Articles in Press

Document Type : Research Paper

Authors

1 Department of Horticultural and Landscape Engineering, Faculty of Agriculture, Malayer University, Iran

2 Department of Soil and Water Sciences, Malayer University, Iran

10.22034/saps.2025.62960.3267

Abstract

Background and Objective: Increasing the soil moisture holding capacity is one of the ways to reduce the damage of drought stress on fruit trees.

Materials and Methods: In this research, the effect of adding two soil amendants on the yield and fruit quality of drought-stressed grapevines was investigated during the 2022 and 2023 in the research vineyard of Malayer University, Hamadan. The experiment is factorial based on a randomized block design and treatments include four levels of amendants (control; zeolite 12 kg; sheep manure 15 kg; zeolite + sheep manure, respectively, 12 and 15 kg vine-1) and two levels of irrigation regime (conventional irrigation with a cycle of 7 days and drought stress with irrigation once every 21 days).

Results: The results showed that increasing the irrigation cycle led to a significant decrease in cluster diameter, fruitset, cluster weight, yield vine-1, total phenol and antioxidant capacity, as well as an increase in total flavonoids, soluble solids and fruit pH. The application of soil amendants moderated the negative effects of drought stress on yield and fruit quality of grapes. The application of zeolite and sheep manure caused an increase in berry diameter, cluster length and diameter, fruit formation, berry and cluster weight, yield, total phenols, ascorbic acid, antioxidant capacity as well as titratable acidity, and a decrease in total flavonoids and soluble solids of fruit.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 20 January 2027

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