engleski

Faba Bean (Vicia faba L.) Salt Stress Response under Different Soil Organic Matter Content

Use of saline water for crop irrigation leads to rhizosphere salinization, which aff ects plant element uptake, as well as trace elements (TEs) accumulation in plant tissue. Moreover, imbalance in crop element uptake may reflect on crop productivity. Soil organic matter (SOM) plays an important role in soil biogeochemical processes and especially aff ects trace element mobility and bioavailability. Therefore, it is an important factor for assessment of plant responses under varying ecological conditions, including salinity. A greenhouse pot experiment was set up to study the effects of saline irrigation and increased SOM on faba bean (Vicia faba L.) salt stress response. Soil from arable land of Croatian coastal region was used for the trial. One half of the bulk of soil provided for the experiment was mixed with commercial peat (4:1) and two trial variants, unmodified and increased SOM content, were investigated. Two weeks aft er transplanting faba bean seedlings into pots, treatment with two levels of NaCl salinity (50 and 100 mM NaCl, respectively) was applied in a nutrient solution. Control plants were included in the measurements as well. Saline irrigation as well as increased SOM affected certain element accumulation in bean plant (leaf, pod and/or seed), although no significant interaction between rhizosphere salinization and SOM was revealed.

faba bean; nutrient uptake; rhizosphere salinity; trace element

Paper was presented at the 4th CASEE Conference "Food and Biomass Production - Basis for a Sustainable Rural Development"