Irrigated rice fertilization management on grain yield and nutrients loss through initial drain discharge in the pregerminated system

Ciência Rural

Avila, Luis Antonio de²  Marchezan, Enio¹  Cazarotto Villa, Silvio Carlos²  Segabinazzi, Tommi²  Marzari, Victor² 

[1] Universidade Federal de Santa Maria, Santa Maria;UFSM

关键词: /font> environmental impact;    lowland sustainable management;    phosphorus;    potassium;   

DOI  :  10.1590/S0103-84782001000500023

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The experiment was conducted aiming to evaluate the effects of fertilization management in the pregerminated system, on grain yield and nutrient loss through early drain discharge. The treatments were: T1- Control (without fertilization); T2- fertilization 20 days before sowing without incorporation; T3- fertilization 20 days before sowing with fertilizer incorporation; T4- fertilization 05 days before sowing without incorporation; T5- fertilization 05 days before sowing with fertilizer incorporation; T6- fertilizer application 10 days after sowing; T7- fertilizer application 25 days after sowing. Grain yield was not affected by the different fertilization management procedures. The fertilizer applied 05 days before sowing promoted the highest nutrients loss, especially potassium. However, recorded loss values were within the range allowed by current legislation.

【 授权许可】

CC BY-NC