The Peruvian carrot and lettuce yield and income in monocropping and intercropping systems, using nitrogen fertilization and chicken manure in cover - DOI: 10.4025/actasciagron.v25i1.2672

Abstract

The aim of this paper was to evaluate the Amarela de Carandaí Peruvian carrot plants and the Grand rapids lettuce yield, in monocropping and intercropping system, using nitrogen fertilization (4.5 g m^-2 of N, in urea form) and semi-decomposed chicken manure (10.0 t ha^-1) as soil cover. Treatments were lettuce (A), Peruvian carrot (M), A - M, A - M - Nitrogen (N), A - M - semi-decomposed chicken manure (CF), A - M - N - CF, M - N, M-CF and M - N - CF arranged in a complete randomized block design in three replications. The lettuce harvests were done 81 days after the sowing and the Peruvian carrot ones occurred 235 days after. The highest fresh mass lettuce yield (9.88 t ha^-1) was obtained in A-M-N treatment, which had a significant increase of 5.69 t ha^-1 in relation to intercropped plants yield without N and CF. The fresh mass yields of commercial Peruvian carrot roots in monocropping system were superior to the intercropped one, except to M-A-N treatment. Dried mass yield of non-commercial amid compounds was also significantly higher for Peruvian carrot plants in monocropping system, with an increase of 59.02% in relation to the one obtained of M-A-CF treatment, which was the smallest. The equivalent ration areas varied from 1.01 in M-A treatment to 1.85 in M-A-N. The best income was yielded by the M-A intercropping using nitrogen fertilization.