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The objective of this work was to evaluate the agronomic attributes and production efficiency of corn silage and grains in an integrated crop-livestock-forestry (ICLF) system, with intercropping of eucalyptus, corn, and Urochloa cultivars during three crop years. The experimental design was completely randomized, in 2x5x3 split-split plots with four replicates. The plots consisted of corn cropped between eucalyptus rows (ICLF) and in full sun; the subplots, of the forage grasses U. brizantha 'Marandu', U. brizantha 'Xaraés', U. brizantha 'Piatã', U. ruziziensis, and U. decumbens 'Basilisk'; and the split-split plots, of the 2011/2012, 2012/2013, and 2013/2014 crop years. There was no effect of eucalyptus on the silage and grain yields of corn when intercropped with forages in 2011/2012. The production efficiency of silage and grains decreased by 25 and 48%, respectively, in 2012/2013 (12-month-old eucalyptus). There was also a 56% reduction in grain yield in 2013/2014 (24-month-old eucalyptus), compared with full sun. In the year the ICLF system is established, the production efficiency of corn silage and grains is not affected by eucalyptus, but decreases with the development of the trees in the subsequent crop years. Resumo: O objetivo deste trabalho foi avaliar os atributos agronômicos e a eficiência produtiva de forragem e grãos de milho em um sistema de integração lavoura-pecuária-floresta (ILPF), com consorciação de eucalipto, milho e cultivares de Urochloa, durante três safras. O delineamento experimental utilizado foi o inteiramente casualizado, em parcelas 2x5x3 sub-subdivididas, com quatro repetições. As parcelas consistiram de cultivo de milho entre renques de eucalipto (ILPF) e a pleno sol; as subparcelas, das forrageiras U. brizantha 'Marandu', U. brizantha 'Xaraés', U. brizantha 'Piatã', U. ruziziensis e U. decumbens 'Basilisk'; e as sub-subparcelas, das safras 2011/2012, 2012/2013 e 2013/2014. Não houve efeito do eucalipto nas produtividades de forragem e grãos de milho consorciado com as forrageiras em 2011/2012. A eficiência produtiva de forragem e grãos teve redução de25 e 48%, respectivamente, em 2012/2013 (eucalipto com 12 meses). Também houve redução de 56% na produtividade de grãos em 2013/2014 (eucalipto com 24 meses), em relação ao cultivo a pleno sol. No ano de implantação do sistema ILPF, a eficiência produtiva de forragem e grãos de milho não é afetada pelo eucalipto, mas é reduzida com o desenvolvimento das árvores nas safras subsequentes.

The objectives of this research were to verify the phytophagous arthropods and their predators in 20 accesses of vegetable loofah Luffa sp. (Cucurbitaceae), the distribution of the canopy of the plants in organic system and the production of fruits of the accesses. The experiment was in randomized blocks designed with 20 treatments and four replicates. The treatments were the accesses P159, P304, P466, P03, P570, P569, P467, P30, P446, P495, P125, P263, P644 and P32, from Embrapa (CENARGEN, DF, Brazil) and P01, P02, P04, P05, P06 and P07, obtained in Porteirinha, MG, Brazil. Each plot consisted of four plants Luffa sp. The greatest abundance of Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) was observed in leaves of the access P467 in reference to the others accessions of Luffa sp.. Trigona spinipes (Fabricius) (Hymenoptera: Apidae) was observed in most flowers of accesses P01, P03, P30, P32, P263 and P569 and less abundant in accesses P05, P125, P159, P304, P446 and P570. The accesses of Luffa sp. highest number of fruits per plant were P01, P03, P05, P06, P07, P30, P32, P125, P263, P446 and P570. The spiders and predatory Coccinellidae (Coleoptera) and the phytophagous Cicadellidae (Hemiptera) preferred to attack the adaxial side, but no statistical difference was detected between the faces to the other arthropods. T. spinipes was present in the apical part of the plant canopy. With these results, access P06 is the most suitable for cultivation, because it was one of those with higher yields and lower rates of insect attack.