The objective of this paper was to evaluate the influence of acidity correction and the time of flooding in nutrient uptake by flooded rice crop. Two experiments were conducted at the experimental field of the Department of Phytotechny of the Federal University of Santa Maria (UFSM), with two different times of flooding, 15 and 35 days after emergence, in an Albaquaf soil. The experiment was a completely randomized block design with four replication. The treatments in each experiment were the following: (1) no lime; (2) 300kg/ha of class D lime, one day before seeding; (3) 1.6t/ha of class C lime, one day before seeding; (4) 1.6t/ha of class C lime, 30 days before seeding; (5) 3.2t/ha of class C lime, one day before seeding; and, (6) 3.2 t/ha of class C lime, 30 days before seeding. The antecipation of flooding increases the production of shoot dry matter and the absorption of nutrients by rice plants. However liming does not increase nutrient uptake and rice dry matter.
Oryza sativa L.; lime; dry matter
