The aim of the paper was clear and found what they study, the title was informative and relevant, references were Relevant also, mostly recent and corrected.

The paper question is prepared urea-formaldehyde resin microcapsules by an in situ polymerization method. which is cleared and related to introduction content.

The process of preparation and characterization methods were clear, reliable, also, leaching process. Moreover, the Synthesis and characterization of slow release fertilizer (SRF) methods are reliable and slightly valid, there were enough replicates for experiments during leaching process.

The data presented in an appropriate way using 6 figures and 3 tables that discuss all relevant results with appropriate units, and number of decimals, the discussed results add to the data and practically meaningful, tables and figures titles, columns, and rows labelled correctly and clearly.

The results and conclusion discussed the aims of the study from different aspects, and referenced The limitations of the study are fatal and didn't give an opportunities to inform future research.