Introduction

Diammonium phosphate (DAP) is a widely used fertilizer in agriculture, often used to provide the phosphorus and nitrogen nutrients needed by plants. However, there are different formulations of DAP on the market, with the most common being 57% DAP and 64% DAP.

This article will delve into the differences between these two types of DAPs, as well as their applications and benefits in agriculture.

Basic knowledge of DAP

DAP is a fertilizer that contains nitrogen and phosphorus. The main components of DAP are nitrogen (N) and phosphorus (P), which provide plants with these two key nutrients and promote growth and development.

These two types of DAP are usually divided into 57% DAP and 64% DAP, and their names indicate the percentage of nitrogen content in them.

The difference between 57% DAP and 64% DAP

The difference between 57% DAP and 64% DAP

1、 Chemical composition comparison

The main difference between 57% DAP and 64% DAP is their nitrogen content.

57% of DAP contains 57% nitrogen, while 64% of DAP contains 64% nitrogen. This means that 64% DAP is more abundant in nitrogen content.

2、 Differences in nutrient content

Due to their different nitrogen content, these two DAPs differ in providing nitrogen nutrients. Therefore, farmers should consider the specific nutrient requirements of crops when making choices.

3、 Particle size and shape

The particle size and shape of 57% DAP and 64% DAP may differ, but this usually does not have a significant impact on application. They are all provided in granular form and easy to apply. 

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