公开(公告)号：US20240336538A1

公开(公告)日：2024-10-10

申请号：US18580985

申请日：2022-07-21

Applicant: SOUTH DAKOTA BOARD OF REGENTS

Inventor： Lin Wei ,  Zhisheng Cen ,  Cheng Zhang ,  Yajun Wu

IPC: C05D9/00 ,  C05F7/00 ,  C05G1/00 ,  C05G3/40 ,  C05G5/30

CPC classification number: C05D9/00 ,  C05F7/005 ,  C05G1/00 ,  C05G3/40 ,  C05G5/37

Abstract: Disclosed herein is a biochar controlled release fertilizer composition. Various embodiments include biochar and one or more nutrients encapsulated in a biodegradable polymer composite. Further embodiments of the controlled release fertilizer composition include one or more of alginate, kaolin, and waste water sludge. The nutrients of the fertilizer may be released such as to be available at the time needed for crop growth while minimizing waste and potentially harmful environmental effects.