Viabilidade Agronômica De Policultivos De Rúcula/Cenoura/Alface Sob Quantidades De Flor-De-Seda E Densidades Populacionais

Júnior

et al. 2017

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A B S T R A C TThis study aimed to evaluate the agro-economic efficiency of agrosystems of two croppings of arugula (A) and two of lettuce (L) intercropped with carrot (C) under different biomass amounts of roostertree incorporated into the soil and population density proportions between the component crops. The experimental design was a randomized block with four replications, with the treatments arranged in a 4 × 4 factorial scheme. The first factor was made up of the amounts of roostertree biomass incorporated into the soil (10, 25, 40 and 55 t ha -1 on a dry basis) and the second factor by the population density proportions of the component crops in the polycultures (50A-50C-50L%, 40A-50C-40L%, 30A-50C-30L% and 20A-50C-20L% of the population recommended for single crops -PRSC). The agro-economic performance of arugula, carrot and lettuce in polyculture was optimized at 25 t ha -1 of roostertree incorporated into the soil. The population density proportions of arugula, carrot and lettuce of 50A-50C-50L% of the PRSC provided the best agro-economic efficiency to the polyculture.Eficiência agroeconômica de policultivos de rúcula-cenoura-alface fertilizados com flor-de-seda sob diferentes proporções de densidade populacional R E S U M O Neste trabalho objetivou-se avaliar a eficiência agroeconômica de agrossistemas provenientes de dois cultivos de rúcula e dois de alface em consórcio com cenoura em diferentes quantidades de biomassa de flor-de-seda incorporadas ao solo e proporções de densidades populacionais entre as culturas componentes. O delineamento experimental foi de blocos casualizados com quatro repetições, com os tratamentos arranjados em esquema fatorial 4 x 4. O primeiro fator foi constituído pelas quantidades de flor-de-seda (10, 25, 40 e 55 t ha -1 em base seca) e o segundo pelas proporções de densidades populacionais das culturas componentes nos policultivos (50R-50C-50A%; 40R-50C-40A%; 30R-50C-30A% e 20R-50C-20A% das populações recomendadas em cultivos solteiro -PRCS). O desempenho agroeconômico do policultivo de rúcula, cenoura e alface foi otimizado na quantidade de 25 t ha -1 de flor-de-seda incorporada ao solo. As proporções de densidades populacionais de rúcula, cenoura e alface de 50R-50C-50A% das PRCS foram as que proporcionaram ao policultivo as melhores eficiências agroeconômicas.

Section: Methodsmentioning

confidence: 99%

Agro-economic efficiency of polycultures of arugula-carrot-lettuce fertilized with roostertree at different population density proportions

Oliveira

Júnior

et al. 2017

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“…In each block, single plots of arugula, carrot, and coriander were planted to obtain agronomic indicators, as recommended by Oliveira et al (2015). Six rows per plot were planted, with a total area of 1.44 m 2 and a harvest area of 0.80 m 2 , spaced 0.20 × 0.05 m for the cultures of arugula and coriander, and 0.20 × 0.10 m for the carrot crop.…”

Section: Methodsmentioning

confidence: 99%

Viability of polycultures of arugula-carrot-coriander fertilized with hairy woodrose under different population densities

Oliveira

Lima

et al. 2017

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Polycultures from broadleaves with tuberoses are being used in vegetable crop production systems in the semiarid region of Potiguar. The challenge is to determine whether these systems are productively viable when fertilized with organic matter produced by spontaneous species of the Caatinga biome. The objective of this study was to evaluate the agro-economic performance of arugula (A), carrot (C), and coriander (Co) polycultures fertilized with hairy woodrose biomass incorporated into the soil under different population densities among the component crops. The experimental design was a randomized complete block with four replications, with the treatments arranged in a 4 × 4 factorial scheme, from the combination of four amounts of hairy woodrose biomass incorporated into the soil (7.5, 15.0, 22.5, and 30.0 t ha-1 on a dry matter basis), with four population densities (20A-50C-20Co%, 30A-50C-30Co%, 40A-50C-40Co%, and 50A-50C-50Co% of the recommended population in the single crop). The efficiency of polycultures was evaluated through indexes and agro-economic indicators. The most productive agro-economic performance was obtained with a biomass of 18.21 t ha-1 of hairy woodrose incorporated in the soil and a population density of 50A-50C-50Co%.

“…The soil of the experimental area was classified as dystrophic argisolic Alfisol (Oliveira et al, 2015). Prior to the experiment, 50 samples were taken in this area and subsequently mixed in order to obtain a composite sample, which was processed and analyzed, whose results were as follows: pH (water) = 7.09; OM = 11.5 mg dm -3 ; N = 0.04 g kg -1 ; P = 15.14 mg kg -1 ; K = 50.5 mg dm -3 ; Na = 4.1 mg dm -3 ; Ca = 1.84 cmol c dm -3 ; Mg = 1.39 cmol c dm -3 and CEC = 3.38 cmol c dm -3 .…”

Section: Materials E Methodsmentioning

confidence: 99%

Productive performance of cowpea-radish intercropping under different amounts of rooster tree biomass incorporated into the soil

Pereira

Pontes

et al. 2016

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Intercropping systems of cowpea with radish are beginning to be deployed in the semiarid region of Rio Grande do Norte state. The great challenge is to know whether or not there is productive efficiency in these systems when fertilized with organic matter produced by spontaneous species from the ‘Caatinga’ biome. Thus, the aim of this study was to evaluate the productive performance of cowpea-radish intercropping systems under different amounts of rooster tree biomass incorporated into the soil. The study was conducted at the experimental farm Rafael Fernandes, rural zone of Mossoró, RN, in the period from June to September 2013, in an experimental design of randomized blocks with four treatments and five replicates. The treatments consisted of the following amounts of rooster tree biomass incorporated into the soil (10, 25, 40 and 55 t ha-1 on a dry weight basis). The best productive performance of the cowpea-radish intercrop was obtained when the rooster tree biomass amount of 50.01 t ha-1 was incorporated to the soil. The use of rooster tree biomass as green manure is agronomically viable in intercropped systems of cowpea-radish.