Brassica crops have been widely studied due to their importance as food for human consumption, especially in relation to their nutritional value. Both yield and consumption are high. Brassica chinensis var. parachinensis was introduced in Brazil, in Uberlândia, in 1992, surpassing other Brassica due to its high content of vitamins A and C, calcium and iron, and being ready for consumption in about 30 days. The biological and agronomic yield of this variety was analyzed under three kinds of fertilizers and three spacings between plants with a view to its production on a commercial scale. The leaf area, dry matter mass, and absolute growth rate were higher with mineral than organic fertilizer. High values for relative growth rate and net assimilation rate were registered in plants growing in greater spacing (30x20 and 30x30 cm). The highest value of agronomic yield was reached in the smaller spacing (30x10 cm), with mineral fertilization, being registered 21.5 t ha-1. This value is near to that registered in Malaysia and China where this vegetable is cultivated on a large scale.
Brassica chinensis L. var. parachinensis (Bailey) Sinskaja; Brassicaceae; nonheading chinese cabbage; vegetable; tsoi sum
