the antagonistic effect between zinc and phosphorus was found due to formation of zinc phosphate as a insoluble substance that decrease the availability of zinc in water as well as soil. So we didn't recommend zinc and phosphorus at same time

There is an antagonistic relationship between phosporus and zinc.

High levels of available soil phosphate (soluble phosphates) result in reduced root colonization by mycorrhizal fungi. Insoluble phosphate does not affect mycorrhizal development. The insoluble phosphate in natural soils can represent as much as 99% of the soil’s total phosphate content.

The Truth About P

High phosphorus can induce a zinc deficiency. The observed response is chlorosis and shortening of the internodes.

The key to phosphorus when not optimized gives a plant stress reaction and the secreted stress compounds are excreted into the soil and have been found to stimulate the mycorrhizae soil fungi which promote a symbiotic relationship.

At very high phosphorus the mycorrhizae relationship is greatly inhibited.

Mycorrhizae greatly increase the ability of zinc to be mobilized and used by the plants which have the relationship optimized.

Using moderate phosphorus and inoculating with mycorrhizae can optimize plant relationship and avoid many issues.

The use of soluble zinc applied to the plants foliarly can be used to avoid the antagonism of Phosphorus with zinc. Zinc deficiencies are also mostly found in alkalaine low available zinc soils sandy and low organic soils.

If Zince is adequate in the soil and the pH and Phosphorus are optimized the presence of mycorrhizae can be optimized by inoculants.

The state of soil mycorrhizae can be assayed and a soil test can be very revelatory for optimizing the soil plant microbe interactions.

Exactly what are you asking about? For example, formulating hydroponic media?

Yes Sir. I want to know that zinc and phosphorus's antagonistic effect also exists in water other than soil.