Chinese cabbage (Brassica pekinensis), is native to the Far East, is cultivated in China for many years . It is a vegetable that begins gradually spread to every continent and in recent years has been widespread in Europe. Brassica pekinensis , required to develop a pH between 6.5 and 7, are neither good nor overly acidic or very alkaline soils. They thrive in climates where minimum temperatures are 15 ° C and maximum 20 ° C. In the San Martin region, promoting the cultivation of Chinese cabbage, it is having limitations on the growth and development of leaves, due to the lack of incorporation of nutrients to the soil and climatic variability factors. Such as temperature, wind and solar radiation, which effect results in the decreased production. This study aimed to evaluate the effect of 3 different doses humic acid granules Leonardite and humic and fulvic acids with macro and micro n...