Articles
Effects of soil amendments under drought stress on tomato accessions
Article number
1422_37
Pages
299 – 308
Language
English
Abstract
Drought stress has an impact on physiological process, growth and yield of plants.
The utilization of tolerant plant species and cultivars, as well as strategies such as soil conditioner application, can enhance drought resistance.
In this study, the effects of combining local genotypes with soil amendments in alleviating the negative impacts of drought stress have been investigated and the study was conducted during the spring growing cycle of 2022. The experimental design was split plots in randomized blocks (irrigation treatments × organic amendments × accessions) with 2 replicates.
Irrigation treatments were included in the main plots, organic amendments in the sub-plots, and accessions in the sub-sub plots.
In full irrigation treatment (Irfull), depletion of 20% available water in the soil was allowed, while the amounts of irrigation in Deficit-1 (Irdef1) and Deficit-2 (Irdef2) were 70 and 40% less compared with full irrigation.
In the sub-plots, vermicompost (VC), biochar (Bio) and organic material-free-control (C) treatments were included in order to reduce the effect of drought stress in the sub-plots.
Five selected accessions from the Mediterranean Basin were used, namely ‘ATS-048/06’, ‘Ntomataki’, ‘Chondrokats’, ‘Areti’, ‘de Ramellet tres cantons’, with ‘Moneymaker’ as reference.
Vermicompost and biochar were applied at 1 kg m‑2 before planting.
Plant growth, yield and fruit quality parameters were determined.
As the deficit irrigation rate increased, both yield and plant development values decreased, while some quality parameters increased.
The effects of genotype also showed variation and the yield performance of ‘Areti’ was the highest.
Soil amendments could be used to reduce the negative effects of drought stress at high temperatures.
The amount of irrigation water could be reduced by 30% according to yield expectation.
The utilization of tolerant plant species and cultivars, as well as strategies such as soil conditioner application, can enhance drought resistance.
In this study, the effects of combining local genotypes with soil amendments in alleviating the negative impacts of drought stress have been investigated and the study was conducted during the spring growing cycle of 2022. The experimental design was split plots in randomized blocks (irrigation treatments × organic amendments × accessions) with 2 replicates.
Irrigation treatments were included in the main plots, organic amendments in the sub-plots, and accessions in the sub-sub plots.
In full irrigation treatment (Irfull), depletion of 20% available water in the soil was allowed, while the amounts of irrigation in Deficit-1 (Irdef1) and Deficit-2 (Irdef2) were 70 and 40% less compared with full irrigation.
In the sub-plots, vermicompost (VC), biochar (Bio) and organic material-free-control (C) treatments were included in order to reduce the effect of drought stress in the sub-plots.
Five selected accessions from the Mediterranean Basin were used, namely ‘ATS-048/06’, ‘Ntomataki’, ‘Chondrokats’, ‘Areti’, ‘de Ramellet tres cantons’, with ‘Moneymaker’ as reference.
Vermicompost and biochar were applied at 1 kg m‑2 before planting.
Plant growth, yield and fruit quality parameters were determined.
As the deficit irrigation rate increased, both yield and plant development values decreased, while some quality parameters increased.
The effects of genotype also showed variation and the yield performance of ‘Areti’ was the highest.
Soil amendments could be used to reduce the negative effects of drought stress at high temperatures.
The amount of irrigation water could be reduced by 30% according to yield expectation.
Publication
Authors
Y. Tüzel, A. Tutal, G.B. Öztekin, T. Durdu, O.S. Harouna
Keywords
Solanum lycopersicum, irrigation, vermicompost, biochar, soil conditioner, water deficit
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