The use of organic fertilisers in vegetable cultivation is important in the pursuit of increased production to improve the physical, chemical and biological characteristics of the soil, to promote plant growth, and to achieve economically viable productivity for farmers of small-and mediumsized farms. This study aimed to evaluate the development and productivity of eggplant after its fertilisation with a biofertiliser that was composed of sugar and alcohol waste and a bacteria growth promoter for plants. The Ciça genotype of eggplant plants werewas distributed in 20 pots with a Original Research Article capacity of 10 L for each pot. The experiment was conducted using a completely randomised design with four treatments and five repetitions. The following treatments were analysed: control (without any fertiliser), chemical fertiliser (NPK), manure and biofertiliser. The analysed parameters included height, stem diameter, weight and number of fruit. The treatments that received some type of fertiliser (chemical or organic) showed higher plant height, and the 'bio-fertiliser' treatment showed better results than the remaining treatments for all parameters. The results for growth in height, stem diameter and number of fruit demonstrated that eggplant adequately responded to fertilisation with biofertiliser in the experimental conditions and about the assessed conventional fertilisers.
A cana-de-açúcar (Sccharum spp.) é umas das principais culturas brasileiras. Com perspectiva de aumento de produção na safra 2016/17 de 2,90% em relação à safra passada. Em números absolutos estima-se uma produção de 684,77 milhões de toneladas de cana-de-açúcar, ante os 665,590 milhões de toneladas na safra 2015/16. A produção de açúcar é estimada na casa dos 39.962,80 mil toneladas, já o etanol produzido nessa mesma safra tende a crescer e chegar ao montante de 27.870.105,60 mil litros (CONAB, 2016). Esse crescimento de produção pode ser atrelado diretamente à melhoria do manejo da cultura, principalmente a adubação. O nitrogênio (N) é um nutriente muito absorvido pela cana-deaçúcar, sendo superado apenas pelo potássio (K), extraindo 94 a 260 kg ha-1 de N, variando de acordo com o genótipo (OLIVEIRA et al., 2010). Na cana-de-açúcar, a absorção do N é preferencialmente nas formas amoniacal (NH4 +) e nítrica (NO3-), entretanto, em solos aerados a forma nítrica é predominante (ARMAS et al., 1992;
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