Crescimento do girassol ornamental submetido à substratos orgânicos em diferentes volumes de águas

Abstract

The objective of this work was to study the Sunflower growth Sun in different organic substrates and under different water volumes. The experimental design was randomized blocks in factorial 3x3x5, with three water supply: A1 (50% = 100 ml), A2 (75% = 300 ml), A3 (100% = 400 ml); combined with three types of organic substrates: S1 (33% soil + 33% + 33% cattle manure earthworm castings), S2 (50% soil + 50% earthworm castings), S3 (50% soil + 50% manure) with five replications with three plants per replication. It was observed that there was no significant effect of the volumes of water (A) on the variable plant height (PH). The type of substrate S1 differed from substrate S3, but both did not differered of substrate S2. It is observed that from 33 to 54 days after sowing (DAS) the type of substrate (S), had significant influence on the variable analyzed. At 61 DAS the factor (A), water volume, also significantly influenced the same variable. There were significant effects on the type of substrate, composed by soil + manure + earthworm humus, of 47 to 54 DAS. Overall 75% of the water and the mixture of soil + manure + earthworm humus, were the factors which provides the best results in the growth of ornamental sunflower (Variety Night Sun).