Produção de forrageiras anuais de inverno em diferentes datas de semeadura

Abstract

The study aimed to evaluate the dry matter production of three winter forage cultivars at four different sowing dates. The experiment was conducted in the experimental area of the Federal University of Pampa – Campus Itaqui, with the experiment carried out in 2019. The evaluated species are white oat, Avena sativa, ryegrass, Lollium multiflorum and double-purpose wheat, Triticum aestivum L.. The present The work was designed in randomized blocks, with four replications, and the treatments consisted of four sowing dates. In 2019, the dates on which the different sowings were carried out are April 09, June 08, August 01, September 06 in the year 2019. In order to evaluate the production of the three forage species at different sowing dates. Successive cuts were performed, taking into account the height of the forage canopy. Using the height of 30 centimeters for oats and wheat and 20 centimeters for ryegrass, leaving 50% of residue from the height for cutting. The production of pre-dry matter was evaluated, with a calculation that relates the number of cuts in relation to the number of blocks per cultivar. And it was found that oats had no statistical difference in the first three sowing dates, differing only in the fourth sowing. The ryegrass had a statistical difference in the first sowing in relation to the other three sowings. Wheat, in the same way, had a statistical difference from the first sowing related to the second and third sowing, with no data on the fourth sowing.