The influence of 6‐BA‐Application on Yield, Phosphorus and Nitrogen Uptake and Endogenous Cytokinin Concentrations in Carrots (Daucus carota L.) Grown in Phosphorus‐ or Nitrogen‐Depleted Soil

Abstract

The decrease in yield productivity of carrots on nitrogen and phosphate depleted soil could be compensated by 6‐BA sprays. In nitrogen or phosphorus deficient plants the concentration of 2‐iP and 2‐iPA are lower than in the control and an increase could be observed following 6‐BA applications. Nitrogen or phosphorus uptake of deficient plants was virtually not affected by 6‐BA application. Consequently dry matter production per unit nutrient taken up by the plants (nutrient efficiency ratio) was increased as compared to the optimally with nitrogen and phosphate supplied control or the deficient plants.

Advances in research on the carrot, an important root vegetable in the Apiaceae family

“…In the field production of carrots, foliar application of CK could promote the growth of carrots on nitrogen- and phosphate-depleted soil. The application of exogenous CK promotes the synthesis of endogenous CK and stimulates the growth of the cortex in carrots 144 . In the study of Wang et al, CK was thought to serve an important function in the second stage of carrot growth (40 days after sowing) 145 .…”