Document Type : Full Paper
Authors
1
Department of Horticultural Sciences, Faculty of Agriculture, Lorestan University, Khorramabad, Lorestan, Iran
2
Department of Horticultural Sciences, faculty of Agriculture, Lorestan University, Khorramabad, Lorestan, Iran.
3
Department of Horticultural Sciences, Faculty of Agriculture, Shahrekord University, Shahrekord , Chaharmahal and Bakhtiari, Iran.
10.22059/ijhs.2024.367288.2128
Abstract
In order to investigate the effect of animal manure and biochar on the improvement of tolerance to water deficit stress in pelagonium graveolens plants, a factorial experiment was conducted in the form of a completely randomized design with four replications in the research greenhouses of the Faculty of Agriculture of Lorestan University in 2021. The first factor includes water deficit stress at three levels of 20, 50 and 80% available water in the soil, and the second factor was six levels of planting substrate: control (Sand and agricultural soil in a ratio of 1:1), animal manure substrate (soil, sand, animal manure 25% by volume), biochar 5 g/kg control bed, biochar 10 g/kg control substrate, biochar 5 g/kg of manure substrate, and biochar 10 g/kg of manure substrate. The results showed that water deficit stress caused a decrease in the number of leaves, wet and dry weight of aerial parts, dry weight of roots and photosynthetic pigments, while, root length and content of malondialdehyde, proline and ion leakage increased. Animal manure and biochar reduced the negative effects of water deficit stress, so that they increased the morpho-physiological characteristics of the plant in stressful and non-stressed conditions, as well as reducing the content of malondialdehyde, proline and ion leakage. Therefore, it can be stated that under the water deficit stress, animal manure and biochar (5 and 10 kg/g) combined reduced the negative effects of stress and increased the growth of pelagonium graveolens.
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