Abstract

Flaxseed is the seed of the linen (Linum usitatissimum L.) and the most produced varieties are brown and golden flaxseed. The objective of this study was to investigate the influence of irrigation and nitrogen application in cultivation of the golden flax cultivation. The irrigation it was made by dripping, daily, except for days of rain occurrences, according to evapotranspiration. The treatments were separated by 0, 50, 100, 150, 200 and 250% of the daily irrigation, and the control value of 100% of the amount of evaporation by area. The seeds were planted on April 22, 2013. After flowering, data were analyzed as: Plant height, number of branches and siliques and the fresh and dry mass of silica and twigs on August 8, 2013. The crop occurred on October 10, 2013 and they were analyzed: amount of silica, number of seeds, total weight of seeds per plant, weight of 100 seeds, the production per meter and the proportion by hectare. Urea application resulted in an improvement in the production of two varieties. The combined irrigation also increases the production; however, in quantities exceeding 150% of irrigation, there was a decrease.

Key words: Linum Usitatissimum L., evapotranspiration, production.