TY - JOUR AU - Rocha, Lucas Vasconcelos AU - Biassi, Dérique AU - Zonta, Everaldo AU - Pereira, Marcos Gervasio AU - Ribeiro , Júlio César PY - 2021/12/31 Y2 - 2024/03/29 TI - No-tillage in organic production system: production parameters and biomass decomposition JF - Comunicata Scientiae JA - Com. Sci. VL - 12 IS - SE - Original Article DO - 10.14295/cs.v12.3157 UR - https://comunicatascientiae.com.br/comunicata/article/view/3157 SP - e3157 AB - <p>Soils of sandy texture in the first layers are of great occurrence throughout Brazil. Because of its fragility, it is essential to use crop practices, such as the adoption of a no-tillage system, to promote benefits to these soils. The objective of this study was to evaluate biomass production, nutrient accumulation, decomposition rates, half-life time and dynamics of the N, P and K release of cover crops residues in organic vegetables cropping on no-tillage system in Seropédica-RJ. The experiment was conducted using a randomized block design with multiple replicates and six fractions: crotalaria (Crotalaria juncea), forage peanuts (<em>Arachis pintoi</em>), brachiaria (<em>Brachiaria brizantha</em>), millet (<em>Pennisetum americanum</em>), a cocktail of seeds, and an area of spontaneous vegetation. Dry matter decomposition and nutrient release were evaluated at 15, 30, 60, 90 and 120 days by the litter-bags method. Crotalaria presented higher dry mass production (15.48 Mg ha-1). The legumes had the highest N contents, being the largest values in the crotalaria. For K, the crotalaria also presented the highest values. In relation to decomposition and nutrient release the millet presented the highest half-life time (98 days), while the peanut presented the lowest (23 days).</p> ER -