Production of three varieties of hydroponic green forage with different doses of nitrogen fertilizer

In the San Vicente canton, province of Manabí, Ecuador, the crops of white corn, yellow corn and sorghum were established as hydroponic green fodder (HGF), the objectives were: i) to determine the variety of HGF with the highest productive response at the weight level with different doses of nitrogen fertilization (NF), ii) to verify the production of white corn, yellow corn and sorghum as hydroponic green fodder (HGF) and iii) evaluate through a benefit/cost analysis the treatment with the highest productive profitability. The factors of study were: Factor A: Varieties, the yellow corn variety INIAP 542 was tested, white corn INIAP 528 and sorghum as hydroponic green fodder (FVH) and iii) evaluate through a benefit/cost analysis the treatment with the highest productive profitability. The factors of study were: Factor A: Varieties, where the yellow maize variety INIAP 542, white maize INIAP 528 and forage sorghum variety Pampa verde were tested. Factor B: nitrogenous doses of 1, 2 and 3 g / L, corresponding to 460, 920 and 1380 ppm. The experiment was implemented in a randomized complete block design (BCA) with a factorial arrangement of 3 x 2, with nine treatments and five replications, which corresponded to 45 experimental units. The results determined a greater growth of white corn at 1g of FN/L of water, with 36.40 cm in length, greater weight was obtained from yellow corn to 1 g of FN/L with 6.60 kg per tray of 50 cm x 70 cm of FVH, economically the best treatment was white corn to 1 g of FN/L with a profitability of 0.56% and a net profit of 1.39 $us per FVH tray. It´s concluded that white corn responds better to nitrogen fertilization under hydroponic conditions, with higher growth and lower production costs.