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Viabilidade agronômica de consórcios de olerícolas sob manejo orgânico.

Sudo, Ailena (1998) Viabilidade agronômica de consórcios de olerícolas sob manejo orgânico. [Vegetable intercroppings viability under organic management.] Masters thesis, Universidade Federal Rural do Rio de Janeiro . .

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Summary

Com o objetivo de avaliar os desempenhos dos consorcios cenoura-alface, alface- rabanete e beterraba-alface, e os respectivos balancos de nutrientes sob sistema organico de producao, foram conduzidos tres experimentos, em 1996 e 1997, no Municipio de Seropedica, Estado do Rio de Janeiro No primeiro experimento avaliaram-se os consorcios entre alface crespa 'Veronica' e cenoura 'Brasilia', e entre alface crespa 'Veronica' e rabanete 'Hibrido n° 19', comparando-os com os respectivos monocultivos, sob delineamento de blocos casualizados com quatro repeticoes. No segundo experimento, foram utilizadas as mesmas cultivares de cenoura e rabanete, consorciadas com alface lisa 'Regina 71', em delineamento experimental igual ao primeiro O terceiro experimento objetivou testar a viabillidade do consorcio entre beterraba 'Early Wonder Tall Top' e alface lisa 'Regina 71', sendo adotado o delineamento de blocos casualizados com seis repeticoes. O consorcio entre cenoura e alface (lisa ou crespa), possibilitou um maior aproveitamento da area cultivada, com indices de Equivalencia de Area apresentando valores superiores a 1,0. O mesmo foi demonstrado para o consorcio entre alface (crespa ou lisa) e rabanete. Quanto ao consorcio entre beterraba e alface, o arranjamento adotado entre as culturas não permitiu que a alface se desenvolvesse satisfatoriamente como cultura secundária. As analises da composicao quimica dos tecidos vegetais de cada espécie forneceram dados ineditos referentes a extracao de nutrientes em monocultivos e consorcios de hortalicas sob sistema organico de producao. O balanco de nutrientes, que consistiu no calculo da diferenca entre a entrada (adubacoes) e a saida (colheitas) de macronutrientes, apresentou valores positivos, exceto para o potassio, nos monocultivos de cenoura e rabanete e no consorcio cenouraalface, indicando que as adubacoes realizadas nao foram suficientes para repor sua extracao. No que tange aos monocultivos de alface e beterraba e ao consorcio entre essas duas culturas os balancos foram altamente positivos

Summary translation

Three experiments were conducted to evaluate the viability of intercropping carrot-lettuce, lettuce-radish and beet-lettuce, under organic management during 1996 and 1997 in Seropedica, Rio de Janeiro, Brazil. Nutrient budgets were also calculated for these systems. The first experiment consisted of lettuce cultivar Veronica plus carrot cv. Brasilia intercropping, and lettuce 'Veronica' plus radish "Hibrido n° 19". The intercroppings were compared with their respective monocultures. The plots were arranged in a randomized complete block design with four replicates. In the second experiment, the same cultivars of carrot and radish were used intercropped with lettuce cv. Regina 71, under the same experimental design as Experiment 1. The third experiment evaluated intercropping of beet and lettuce. The experimental design was a randomized complete block with six replicates. The carrot-lettuce intercrop was beneficiai, with values of Land Equivalent Ratio (LER) greater than 1,0. The same results were found for the lettuce-radish intercrop. Due to the arrangement adopted in the third experiment, beets were dominant in relation to lettuce when intercropped, affecting lettuce growth negatively. Results of plant tissue analyses o f ali vegetables were used to calculate a nutrient budget. It consisted of quantifying macronutrient input (fertilizers) and output (harvests). Positive values were found, except for potassium. Greater amounts of this element were necessary to carrots and radish in monoculture and carrot-lettuce intercropping. Monocultures of lettuce and beet had highly positive budgets.

EPrint Type:Thesis
Keywords:Alface, Nutrientes, Cenoura, Rabanete. Lettuces, Nutrients, Carrots, Radishes.
Agrovoc keywords:
LanguageValueURI
EnglishLettuceshttp://aims.fao.org/aos/agrovoc/c_12151
EnglishNutrientshttp://aims.fao.org/aos/agrovoc/c_5274
EnglishCarrotshttp://aims.fao.org/aos/agrovoc/c_9640
EnglishRadisheshttp://aims.fao.org/aos/agrovoc/c_13735
Englishagroecologyhttp://aims.fao.org/aos/agrovoc/c_92381
EnglishVegetable cropshttp://aims.fao.org/aos/agrovoc/c_8165
Subjects: Crop husbandry > Production systems
Farming Systems
Crop husbandry > Production systems > Vegetables
Research affiliation: Brazil > Other organizations
Deposited By: Santos, Ederson Luiz
ID Code:25057
Deposited On:20 Feb 2014 19:43
Last Modified:20 Feb 2014 19:43
Document Language:Portuguese/Portugues
Status:Published
Refereed:Peer-reviewed and accepted

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