Effect of Substrate Type and Fertilizing Management Programs on Yield and Nitrate Content of Both Molokhia and Spinach Grown on Rooftops in Egypt

Urban Farm DB summary

Two experiments were conducted in 2020 and 2021 on a rooftop garden in Giza, Egypt, to investigate the effect of substrate type and fertilizing programs on molokhia and spinach yield and nitrate content. Substrate S1 (50% perlite: 50% peat moss) was found more suitable for high yield. While chemical nutrient solution (CNS) alone resulted in the highest yield, the combination of S1 and CNS followed by compost tea for 5 days before harvest (CNS+5) was most suitable for high yield with lower nitrate accumulation.