Consórcios de caupi e milho em cultivo orgânico para produção de grãos e espigas verdes

Guedes, R. E.; Rumjanek, N. G.; Xavier, Gustavo Ribeiro; Guerra, José Guilherme Marinho; Ribeiro, Raul de Lucena Duarte

doi:10.1590/s0102-05362010000200006

Cited by 13 publications

(17 citation statements)

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“…Entretanto, Guedes et al (2010) não constataram diferença no peso de espigas verdes entre sistemas de cultivo solteiro e consorciado, que obtiveram produtividade média 5,96 e 5,86 t ha -1 , respectivamente.…”

Section: Resultsunclassified

“…Houve redução média de 46% para vagens verdes e 38% para grãos no sistema de cultivo consorciado em relação ao monocultivo. Essa redução nas componentes de produção verificado no feijão-caupi no cultivo consorciado, também foram constatados por Silva (2001) e Guedes et al (2010), onde o primeiro verificou uma redução média de 55% e o segundo uma redução de 60% no cultivo consorciado, para rendimento de vagens verdes e grãos verdes.…”

Section: Resultsunclassified

“…Esses genótipos apresentaram maior IEA, bem como maior índice (I B ) referente ao milho, sem causar perdas para o índice individual (I A ) do feijão-caupi. Guedes et al (2010) em um estudo com feijão-caupi e milho consorciados para produção de grãos e espigas verdes, e Teixeira et al (2011) no consórcio entre as culturas de feijão e mamona, obtiveram IEAs superiores a uma unidade, sinalizando, de forma similar, para a conveniência do sistema, ficando em média acima de 1,2 e 1,3, respectivamente.…”

Section: Resultsunclassified

“…Valores médios de clorofila foliares no feijão-caupi: clorofila a (CLA), clorofila b (CLB), clorofila total (TOTAL) e razão entre os teores de clorofilas a e b (RAB) sob sistema de monocultivo e cultivo consorciado com milho, na entressafra de 2010, Gurupi,TO A disponibilidade de luz é um dos fatores a ser avaliado no sistema de consórcio, dessa forma Guedes et al (2010) atribuíram a competição por luz como a principal causa na redução da produtividade do feijão-caupi, quando consorciado com a cultura do milho. Isso se deve, principalmente, pelo fato do sombreamento reduzir a eficiência global de interceptação de luz, ocasionando redução no ganho de carbono, consequentemente, decrescimento na produtividade das plantas.…”

Section: Resultsunclassified

“…Nos últimos anos, vários estudos vem sendo realizados para avaliar o milho em cultivo solteiro ou consorciado com feijão-caupi (SILVA, 2001;GUEDES et al, 2010;BLANCO et al, 2011;SOUZA et al, 2011). Apesar de vários trabalhos terem sido realizados com o objetivo de avaliar o rendimento de espigas verdes e de grãos verdes na cultura do milho e feijão-caupi em sistema de cultivo consorciado, não existem relatos sobre o rendimento dessas duas culturas nesse sistema de cultivo no estado do Tocantins.…”

Section: Introductionunclassified

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Maize and Cowpea Intercrops for Production Green Ears and Green Beans at Tocantins, Brazil

Santos

Salgado

Santos³

et al. 2014

Nucleus

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RESUMO:Objetivou-se com este trabalho avaliar o desempenho de genótipos de milho em sistema de monocultivo e cultivo consorciado com feijão-caupi no Estado do Tocantins para produção de espigas e grãos verdes. O experimento foi conduzido, na entressafra do ano de 2010, em Gurupi, TO. O delineamento experimental adotado foi o de blocos casualizados em esquema fatorial 4 x 2 + 1, com quatro genótipos de milho, dois sistemas de cultivo e um monocultivo de feijão-caupi. As características avaliadas foram: altura de planta, altura de espiga, diâmetro de espiga empalhada, comprimento da espiga empalhada, comprimento da espiga despalhada, massa da espiga empalhada, massa da espiga despalhada. No feijão-caupi avaliou-se a produtividade de vagens e grãos verdes. Calculou-se o índice de equivalência de área (IEA) no consórcio. Foram determinados os valores de pigmentos foliares no feijão caupi. Os dados analisados pelo teste Tukey a 5% de probabilidade. Houve interação entre os genótipos de milho e os sistemas de cultivo para altura de planta, massa de espiga empalhada e espiga desempalhada. O consórcio reduziu a produtividade do milho e do feijão-caupi. Conclui-se que genótipos de milho com ciclo tardio são afetados negativamente em cultivo consorciado. O IEA aponta como promissores o consórcio do feijão-caupi com o híbrido 20A06 e a variedade de polinização aberta PA21009, ambas de ciclo precoce. Houve aumento nos teores de clorofila a, b e total no feijão-caupi, quando este é submetido ao cultivo consorciado com milho.Palavras-chave: Zea mays. Vigna unguiculata. Índice equivalência área. Pigmentos foliares. Entressafra. MAIZE AND COWPEA INTERCROPS FOR PRODUCTION GREEN EARS AND GREEN BEANS AT TOCANTINS, BRAZIL SUMMARY:The aimive of this study was to evaluate the performance of maize genotypes in monoculture and intercropping with cowpea system in the State of Tocantins to produce spikes and green beans. The experiment was conducted in the offseason of 2010, in Gurupi, TO. The experimental design was a randomized block design in a factorial 4 x 2 + 1, with four maize genotypes, two systems of cultivation and monoculture of cowpea. The variables evaluated in maize were: plant height, ear height, ear diameter with husk, ear length with husk, ear length out husk, ear with husk weight, ear out husk weight. In cowpea evaluated the yield of green pods and green beans. Also calculated the index equivalence area (IEA) in intercropping. Values were also determined in the leaves of cowpea pigments. The data analyzed by the Tukey test at 5% probability . There was significant interaction between the genotypes and cropping systems for the variables: plant height, ears with and without husk weight. There was a reduction in yield components of maize and cowpea in intercropping. Genotypes of maize with late maturity are negatively affected in intercropping. The IEA points out how the consortium of promising cowpea with hybrid 20A06 and PA21009 open cross variety, both early maturity. There were increased levels of chlorophyll a, b and ...

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Section: Resultsunclassified

Section: Introductionunclassified

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Maize and Cowpea Intercrops for Production Green Ears and Green Beans at Tocantins, Brazil

Santos

Salgado

Santos³

et al. 2014

Nucleus

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Eucalyptus shading and allelopathy in the germination and development of pitaya (Hylocereusundatus)

et al. 2022

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Eucalyptus spp. it is known to be part of most forests planted for commercial use in Brazil, however when intercropped with Pitaia (Hylocereus undatus), few studies report this interaction. The objective of this work was to evaluate the effects of shading and the existence of allelopathic interaction between Eucalyptus spp and pitaia (H. undatus) in the field, as well as the action of eucalyptus leaf extract in the germination of pitaia seeds in laboratory conditions. In the field experiment, the statistical model of randomized block design (DBC) was used, with the use of adult plants of pitaia and eucalyptus, evaluating the following variables: number of shoots in the aerial part; number of flowers; crown diameter; circumference of the cladode; number of fruits and the variation in the amount of light reaching the plants. It was observed that the plants that were outside the eucalyptus forest showed better results. In the second experiment, the allelopathic action of different concentrations of aqueous extracts of eucalyptus leaves on the germination of pitaia seeds was evaluated. This experiment was carried out in DIC with four repetitions of 60 pitaia seeds. These seeds were then subjected to treatments with different dilutions, varying from 0% (control), 12.5%, 25% and 50% of the stock solution. It was observed that as the leaf extract concentrations increased, germination decreased. The concentrations of 0% (control) and 12.5% showed better results. In conclusion, in fact, eucalyptus exerted an allelopathic action on pitaia plants.

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Weed communities in the organic cultivation of fresh maize intercropped with legumes and coffee husk

Santos

Galvão

Giehl

et al. 2019

Rev. Fac. Nac. Agron. Medellín

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The objective of this study was to evaluate the phytosociology of the weed communities in maize intercropped with legumes and coffee husk in an organic production system, emphasizing on the relative importance of the weeds and their biomass. The experiment was implemented with the following treatments: T1 - Maize intercropped with Phaseolus vulgaris and weed mowing, T2 – maize intercropped with Crotalaria juncea and weed mowing, T3 - Maize intercropped with Canavalia ensiformis and weed mowing, T4 - Maize intercropped with Cajanus cajan and weed mowing, T5 - Maize grown on soil covered with coffee husk (100 m3 ha-1) and manual weeding and T6 - Maize grown under conventional tillage system and manual weeding (control). The treatments were performed under a random block design with five replications each. A phytosociological analysis of the weeds was performed at stages V4, V8, and R1 to determine the relative importance (RI%) and biomass. The lowest biomass (11.6 g m-2) of weeds occurred when maize was grown on soil covered with coffee husk. In total, 13 species of weeds were identified, being Cyperus rotundus L. the most prevailing species (%). From this study, it was determined that growing maize on soil covered with coffee husk is an alternative to suppress weeds in the organic fresh maize system when coffee husk is available.

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Consórcios de caupi e milho em cultivo orgânico para produção de grãos e espigas verdes

Cited by 13 publications

References 4 publications

Maize and Cowpea Intercrops for Production Green Ears and Green Beans at Tocantins, Brazil

Maize and Cowpea Intercrops for Production Green Ears and Green Beans at Tocantins, Brazil

Eucalyptus shading and allelopathy in the germination and development of pitaya (Hylocereusundatus)

Weed communities in the organic cultivation of fresh maize intercropped with legumes and coffee husk

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