In the present work the capitulum dry matter profits when cassava waste water was used as a substitute for the mineral fertilization were higher than those (3,882.5 kg ha−1 ) obtained in one study when growing the sunflower hybrid BRS 191 in Rhodic Eutrudox (eutroferric Red Latosol) managed with mineral fertilizers [30]. In addition, the responses of capitulum fresh and dry matter presented in our research are similar to those found in another study, when quantifying yield and contribution of achene, leaf, stem, and capitulum in fresh and dry matter of sunflower hybrids Helio 251 and Helio 360 for silage production. They found 1,315.54 and
2,180.89 kg ha−1 of capitulum dray matter and 6,473.65 and
11,648.04 kg ha−1 of capitulum fresh matter for the hybrids Helio 251 and Helio 360, respectively. These results pointed out that cassava waste water attended the nutritional exigency of the crop in the text.
exigency