There are researches with calcium to produce the cauliflower inflorescence, but for seeds production no studies were found, this element is fundamental for the fixation of the floral buds and in the production and quality of seeds. The objective was to evaluate the effect of foliar application of calcium on different phenological stages of cauliflower plants in seed production and quality. Eleven treatments were evaluated, varying the number (1 to 4) of calcium (6 g L-1 of calcium chloride) applications and the phenological stages (E1 = floral stem with 30 cm length, E2 = opening of the first flowers; E3 = formation of first siliques; E4 = 50% of silique formed), resulting: T1 = control without application of Ca; T2 = E1; T3 = E1 + E2; T4 = E1 + E2 + E3; T5 = E1 + E2 + E3 + E4; T6 = E2; T7 = E2 + E3; T8 = E2 + E3 + E4; T9 = E3; T10 = E3 + E4; T11 = E4. The results showed a higher seed production per plant in treatments T10 (E3 + E4) and T11 (E4) with 42 and 48 g per plant, and a higher number of seeds per plant, with 12,379 and 12,978, respectively, compared to the control (T1): 23 g and 5,725 seeds per plant. Calcium applications in different phenological stages did not influence the physiological quality (germination and vigor) of cauliflower seeds of cultivar 'Piracicaba Precoce'. Application of these treatments in other cultivars is promising for further studies.

A qualidade da melancia é determinada pelo total de açúcares, coloração, aparência, dentre outras. Estas, assim como a produtividade, podem ser afetadas pela relação entre fonte e dreno, sendo necessário estudar novas técnicas de manejo para adequação dentro da cadeia produtiva, destacando-se a poda das hastes. O método de condução tutorado em mini melancia ainda é incipiente, entretanto, realiza-se adaptações do cultivo do melão. Portanto, o objetivo desta pesquisa foi avaliar a poda e condução das plantas de mini melancia para produção de frutos. Foi estudado a mini melancia cultivar Sugar Baby, e o experimento foi em parcela subdividida com tipo de condução (sistema rasteiro e na vertical tutorado) nas parcelas, e a poda nas subparcelas (1 ou 2 hastes), com delineamento experimental em blocos ao acaso com 10 repetições. Conclui-se que o sistema tutorado, rasteiro, com uma ou duas hastes, conferem frutos de qualidade da mini melancia ‘Sugar Baby’. Em futuros trabalhos sugere-se estudar em outras cultivares, pois diferentes genéticas respondem diferentemente, bem como também realizar a poda em nós diferente do presente estudo.

Studies on the effect of foliar fertilization on the production and quality of vegetable seeds are still scarce. There is a lack of information regarding recommendations that provide an increase in the production of seeds with high physiological potential. Thus, the objective was to evaluate the effect of boron application via leaf at different phenological stages of cauliflower on the production and phenological quality of seeds. The experiment was carried out from January 2017 to March 2018. The studied species was the cauliflower cultivar Piracicaba Precoce with 16 treatments, resulting from the combination of number of applications (1, 2, 3, 4, 5) of boron leaf pathway at 1.0 g L-¹ in five phenological stages: 30 cm floral stem; opening of the first flowers; formation of the first silicas; 50% of silica formed and 100% of silica formed, in addition to control without application of boron. The experimental design was in randomized blocks with four replications. According to the results, it was observed that the application of boron via leaf at different phenological stages of 'Piracicaba Precoce' cauliflower did not differ from the control (without boron) for seed production. Perform an application of boron via leaf to produce cauliflower seeds in the stages: opening of the first flowers (average: 96%); in the formation of the first silicas (average: 94%), and at the moment when there are 100% of silicas formed (still green) (average: 93%), there is an increase in vigor on average of 16% more when compared to plants with 30 cm of floral stem (younger stage, average: 78% vigor).