Boron uptake and translocation in some cotton cultivars

4R decisions for boron fertilization

“…A challenge of foliar B fertilization is the lack of movement of B to new growth in many species; in these species, applied B remains in the sprayed tissues and is not mobilized towards new growth. While B is generally not able to move from old growth to new growth in most crops, it has been demonstrated in some cotton cultivars and coffee plants to move as B is needed for new growth (Bogiani et al, 2014; Leite et al, 2007). Results in cotton found that when a labeled 10 B isotope nutrient solution was applied to the leaves of the plant, the uptake rate of B was the same as when it was in the nutrient solution provided to the roots (Bogiani et al, 2014).…”

“…While B is generally not able to move from old growth to new growth in most crops, it has been demonstrated in some cotton cultivars and coffee plants to move as B is needed for new growth (Bogiani et al, 2014; Leite et al, 2007). Results in cotton found that when a labeled 10 B isotope nutrient solution was applied to the leaves of the plant, the uptake rate of B was the same as when it was in the nutrient solution provided to the roots (Bogiani et al, 2014). In cotton, between 3 and 48 hours after application of the 10 B nutrient solution, 10 B concentration in all plant parts had increased (Bogiani et al, 2014), indicating movement from the third leaf of cotton where it was applied to the lower leaves, roots, and stem of the plants.…”

“…Results in cotton found that when a labeled 10 B isotope nutrient solution was applied to the leaves of the plant, the uptake rate of B was the same as when it was in the nutrient solution provided to the roots (Bogiani et al, 2014). In cotton, between 3 and 48 hours after application of the 10 B nutrient solution, 10 B concentration in all plant parts had increased (Bogiani et al, 2014), indicating movement from the third leaf of cotton where it was applied to the lower leaves, roots, and stem of the plants. Understanding how and if B is mobile in the crop where an in‐season B application is being considered is critical to having an effective impact of the application on crop production.…”

“…Response to B fertilizer applications, even when soil tests indicate a need for B fertilization, can be variable. Cotton grown in greenhouse experiments responded with increased dry matter yield, taller plants, and more reproductive structures per plant as concentration of B in the nutrient solution increased (Bogiani et al, 2014). However, when alfalfa grown in low‐B soils in Montana was fertilized with liquid B fertilizer, there was only a yield response in one cutting out of eight measured over two years and two sites, and quality of the alfalfa hay was not impacted by the applications (Sapkota et al, 2018).…”

Nutrient Use Efficiency in Plants

“…After loading in the xylem, B is transported to the shoot through the transpiration stream (Wimmer and Eichert 2013;Bogiani et al 2014). Transport of B through phloem was also reported, and such transport differs between species (Brown and Hu 1996;Brown and Shelp 1997;Ganie et al 2013).…”