Performance of lettuce in sole cropping and intercropping with green manures

Horticultura Brasileira

Ana Clarissa A Negrini²  Paulo César T De Melo²  Edmilson José Ambrosano¹  Rogério Haruo Sakai¹  Eliana Aparecida Schammass¹  Fabrício Rossi² 

[1] ,USP ESALQ Depto Prod. VegetalPiracicaba SP

关键词: Avena strigosa;    Lactuca sativa;    Lupinus albus;    Vigna unguiculata;    polycultures;    Avena strigosa;    Lactuca sativa;    Lupinus albus;    Vigna unguiculata;    policultivos;   

DOI  :  10.1590/S0102-05362010000100011

来源: SciELO

【 摘 要 】

The performance of lettuce in sole and intercropped with green manures was assessed under different establishment times. The lettuce fresh and dry weight, number of leaves per plant, diameter and length of head, and fresh and dry weight of green manure were evaluated. The intercropping design was additive and both cash and cover crops were planted in rows. The experimental design was of randomized complete blocks in split plot scheme, with six replicates. The plots represented the green manure sowing days (0, 20, 40 and 60 before transplanting of lettuce), and the sub-plots were assigned by cropping systems (lettuce in sole crop and intercropped with black oat, cowpea or white lupin). Simultaneous planting in the intercropping did not affect the lettuce performance. However, when the green manures were sown before lettuce, they influenced it in a negative way. Among the green manures, cowpea increased biomass and had a higher negative effect on lettuce performance compared to white lupin, which appeared to produce less competition. The sole crop and the intercropping with simultaneous planting of the green manures resulted in a better lettuce performance.

【 授权许可】

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