Organic Fertilizer Sources Distinctively Modulate Productivity, Quality, Mineral Composition, and Soil Enzyme Activity of Greenhouse Lettuce Grown in Degraded Soil

Intensive greenhouse vegetable production is often associated with a decline of crop productivity due to the increase soil salinity and/or reduction biological fertility. The aim current work was assess effects three organic fertilizers on morpho-physiological and agronomic traits lettuce as well enzyme activity under poor quality conditions. tested (poultry manure, vinasse-based fertilizer, insect’s frass fertilizer) were applied pre-planting at same equivalent nitrogen (N) rate (90 kg N ha?1). Laboratory incubation assay results showed that fertilizer most suitable in supplying mineral short term. All increased shoot fresh dry weight compared unfertilized control more pronounced effect (+75%) frass. Insect reduced by 27% leaf nitrate concentration comparison other treatments. toxic heavy metal Pb 46% lower all organically fertilized leaves. Soil enzymatic activities acid phosphatase, alkaline arylsulfatase (ArS), N-acetyl-?-D-glucosaminidase (NAGase), dehydrogenase, total hydrolase (THA) enhanced poultry manure while ArS, NAGase, THA. Taken together, our data demonstrate application especially during intensive approach for mitigating negative impact salinity, enhancing fertility, improving performance lettuce.