Supplementary addition of pig slurry and poultry manure as a source of soil organic matter: effect on tomato yield and quality

Catarina Esteves,¹ Regina Menino,^2,3 Ana Cristina Ramos,^4,5 Marta Abreu,^4,6,7 Nelson Pereira,^4,6 Cristina Roseiro,^4,5 Olga Moreira,^8,9,10,11 David Fangueiro^6,7