Yield and gross income of 'Chinês' taro (Colocasia esculenta), of 'Brasília' carrot (Daucus carota) and of 'Quatro estações' lettuce (Lactuca sativa) were evaluated in monocrop system and taro-carrot and taro-lettuce intercrops, in environmental conditions of Dourados, Mato Grosso do Sul State, Brazil. The five treatments were arranged in field, in a randomized block design with five replications. For each specie different compounds of plants were evaluated. Intercropping was evaluated by land equivalent ratio (LER) and the validation was by gross income determination. The highest yields of lettuce were 1.57; 2.09 and 6.59 t ha-1 for masses of commercial, non-commercial and tasseled "heads", respectively, which were obtained through monocrop system. Carrots cultivated in monocrop system were 6.5 cm higher and produced 6.83 t ha-1 more fresh mass of commercial roots in comparison to intercropping with 'Chinês' taro. The highest yields of leaves, commercial corms and cormels of 'Chinês' taro were obtained with taro-lettuce intercropping, and of non-commercial cormels were obtained with taro in the monocrop system. The smallest yields were obtained from taro-carrot intercropping. LER for taro-carrot and taro-lettuce intercroppings were 1.06 and 1.83, respectively. For the gross income, it was established that for carrot and lettuce producers, the intercropping system with 'Chinês' taro induced monetary increments per hectare of R$ 6,122.50 or of R$ 20,045.00, respectively. For taro producer, only the intercropping with lettuce was positive, with increase of R$ 7,313.50 ha-1.
Colocasia esculenta; Lactuca sativa; Daucus carota; yield; gross income
