A note on Samelson product in $Sp(n)$

Let $m$ and $n$ be two positive integers such that $m<n$. Let $Q_{n-m+1}$ be the symplectic quasi-projective space of rank $n-m+1$. In this article, we will study the order of the Samelson product $S^{4m-1}\wedge Q_{n-m+1}\to Sp(n)$.