Patent · US Active

Special film-coated release calcium fertilizer for peanut and preparation process thereof

US10723668B2 · kind B2 · utility

0Cited by

0References

6Claims

0Family size

Assignee

BIOTECHNOLOGY RESEARCH CENTER, SHANDONG ACADEMY OF AGRICULTURAL SCIENCES · CN

Inventors

Jialei Zhang · Shandong, CN
Shubo Wan · Shandong, CN
Xinguo Li · Beijing, CN
Feng Guo · 安丰镇, CN
Sha Yang · Shandong, CN
Yun Geng · Shandong, CN
Zheng Zhang · Cambridge, US
Jingjing Meng · Nanjing, CN
Chaohui Tang · Shandong, CN

Key dates

Filing date	Jul 18, 2018
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Jul 18, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/145
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A special film-coated controlled release calcium fertilizer for peanut includes a three-layer structure. Raw materials in an inner layer include calcium nitrate, humic acid, seaweed extract and adhesive. Raw materials in an intermediate layer include calcium nitrate, urea formaldehyde powder and chitosan oligosaccharide. Raw materials in an outer layer include urea formaldehyde powder and fermented livestock and poultry manure. The special controlled release calcium fertilizer for peanut releases Ca since the pod-bearing stage after the basal application. The coating film is a biodegradable film, releases calcium since about 50 days after application into soil.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.