Informace o publikaci

Stem water potential, stomatal conductance and yield in irrigated apple trees

Autoři

PLAVCOVÁ Lenka JUPA Radek MÉSZÁROS Martin SCHÁŇKOVÁ Klára KOVALÍKOVÁ Zuzana NÁMĚSTEK Jan

Rok publikování 2023
Druh Článek v odborném periodiku
Časopis / Zdroj Plant, soil and environment
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://www.agriculturejournals.cz/pdfs/pse/2023/07/01.pdf
Doi http://dx.doi.org/10.17221/160/2023-PSE
Klíčová slova drought; water dynamic; fruit trees; gas exchange; deficit; abiotic stress
Popis Plant-based indicators of water status, such as midday stem water potential (?stem) and leaf stomatal conductance (gs), are used to optimise irrigation scheduling in horticultural crops because they integrate the effect of soil and climatic conditions and the internal physiological constraints. The use of these indicators relies on experimentally acquired thresholds that relate the value of the indicator to negative effects on yield. In five irrigation treatments, we monitored yield, fruit size and the courses of ?stem and gs throughout four consecutive growing seasons. We found that ?stem was more sensitive to irrigation treatment than gs. Both indicators increased with available soil water content (ASWC) and decreased with evaporative demands of the atmosphere (ETC). On a seasonal basis, crop load had a stronger impact on gs than ?stem. In summary, our study explored the effect of environmental conditions and crop load on plant-based indicators of tree water status and can be useful for establishing thresholds for irrigation scheduling in apple tree orchards.

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info