Guiseppe spent 1 year as a visiting scientist in the Department of Horticulture and Landscape Architecture at Purdue University and 1 year as a visiting scientist in the Department of Vegetable Crops at the University of California, Davis, USA. 

His main areas of research are plant biostimulants and plant nutrition, life cycle assessment, abiotic stress tolerance of plants and product quality. He published more than 200 articles in peer-reviewed journals.

Participates as project leader of the subgroup 'Plant Biostimulants - Declarations - Abiotic Stress Tolerance from 2019 to 2024 for the preparation of the European Standard and specification under Mandate M/564 regarding EU fertilizer products in support of Regulation (EU) 2019/1009 of the European Parliament and of the Council. 

He was guest editor of many special issues of international scientific journals such as Scientia Horticulturae, Frontier in Plant Sciences, Agronomy MDPI. He was editor of the International book 'Biostimulants for sustainable crop production' (2020). Burleigh Dodds Science Publishing Limited, UK. He participated as coordinator and principal investigator of many research projects in horticulture and plant biostimulants funded by EU, Italian Ministry of Agricultural, Food and Forestry Policies, Italian Ministry of Education. He is a member of the Scientific Committee of https://www.biostimulant.com/, member of the PhD board in Animal and Plant Production at the University of Tuscia. https://www.biostimulant.com/, miembro de la junta de doctorado en Producción Animal y Vegetal de la Universidad de Tuscia.