scholarly journals PRODUCTIVE PERFORMANCE OF CARROT AND COWPEA INTERCROPPING SYSTEM UNDER DIFFERENT SPATIAL ARRANGEMENTS AND POPULATION DENSITIES

2018 ◽  
Vol 31 (1) ◽  
pp. 19-27 ◽  
Author(s):  
GIORGIO MENDES RIBEIRO ◽  
FRANCISCO BEZERRA NETO ◽  
JAILMA SUERDA SILVA DE LIMA ◽  
MAIELE LEANDRO DA SILVA ◽  
AURÉLIO PAES BARROS JÚNIOR ◽  
...  
Keyword(s):  
Experimental Design ◽  
Population Density ◽  
Economic Performance ◽  
Crop Yields ◽  
Spatial Arrangement ◽  
Root Production ◽  
Calotropis Procera ◽  
Productive Performance ◽  
Population Densities ◽  
Caatinga Biome

ABSTRACT Spatial arrangement and population density of component cultures, when well structured, may contribute to increased crop yields relative to monocultures. Thus, the objective of this work was to evaluate the productive performance of carrot and cowpea in an intercropping system under different spatial arrangements and population densities. This research was conducted on the “Rafael Fernandes” experimental farm of the Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, RN, Brazil. The experimental design was a randomized complete block with four replicates, where the treatments were arranged in a 3 × 4 factorial scheme, in which the first factor was three spatial arrangements (2:2, 3:3, and 4:4) and the second factor was four different population densities of cowpea (100%, 80%, 60%, and 40% of the recommended population in the single crop [RPSC]). Rooster tree Calotropis procera (Ait.) R.Br., a spontaneous species of the „Caatinga‟ biome, was used as fertilizer. The characteristics evaluated in carrot were as follows: total and commercial productivity of roots and classified root production. The following characteristics were evaluated for cowpea: number of pods per square meter, length and yield of green pods, number of grains per pod, 100grain weight, and yield of green grains. The modified monetary advantage was used to evaluate the feasibility of the intercropped systems. Spatial arrangements between the component cultures did not influence the agroeconomic performance of the carrot-cowpea intercropping system. The highest agro-economic performance of the carrot-cowpea intercropping was obtained in the population of cowpea, which was 42% of the RPSC.

scholarly journals Cowpea and beet intercropping agro-economic dynamics under spatial arrangement and cowpea population density

2020 ◽  
Vol 38 (2) ◽  
pp. 192-203 ◽  
Author(s):  
Aridênia P Chaves ◽  
Francisco Bezerra Neto ◽  
Jailma SS Lima ◽  
Josimar N Silva ◽  
Renato LC Nunes ◽  
...  
Keyword(s):  
Experimental Design ◽  
Population Density ◽  
Economic Efficiency ◽  
Maximum Yield ◽  
Growing Season ◽  
Spatial Arrangement ◽  
Productivity Index ◽  
Population Densities ◽  
System Productivity ◽  
Growing Seasons

ABSTRACT The objective of this work was to evaluate the effect of planting spatial arrangements between the cowpea and beet crops in intercropping and of cowpea population densities on the crop’s productivity and in the agro-economic efficiency of the association at two growing seasons. The experimental design was of randomised blocks with the treatments arranged in a 4 x 3 factorial scheme, in four replications. The first factor was constituted by three spatial arrangements between the component cultures (2:2, 3:3 and 4:4), formed by beet rows alternated with cowpea rows, while the second factor was constituted by the population densities of cowpea: 40, 60, 80 and 100% of the recommended population in single crop (RDSC). The production and its components were evaluated in the beet and cowpea. Apart from these characteristics, the following agro-economic indicators were also determined for each treatment: system productivity index (SPI), the land equivalent coefficient (LEC), and the monetary equivalent ratio (MER). The maximum production of commercial beet roots was obtained with 15.60 t ha-1 productivity at density of 61.82% of RDSC within the 4:4 arrangement, while the maximum yield of cowpea green grains of 2.23 t ha-1 was reached at density of 79.57% of RDSC within 2:2 spatial arrangement. The productivities of beet roots of extra A, extra AA and great types decreased with increasing cowpea population density, without any influence of the tested spatial arrangements. The maximum mean productivity of cowpea green pods of 1.74 t ha-1 was obtained at density of 87.47% of RDSC, reached within 2:2 spatial arrangement. The maximum economic efficiency of the cowpea-beet intercropping was obtained with MER of 1.11 at cowpea density of 100% of RDSC, irrespective of the spatial arrangement and growing season.

scholarly journals AGRONOMIC EFFICIENCY OF THE INTERCROPPING OF ARUGULA WITH CARROT UNDER DIFFERENT POPULATION COMBINATIONS

2016 ◽  
Vol 29 (1) ◽  
pp. 76-84 ◽  
Author(s):  
THAÍZA MABELLE DE VASCONCELOS BATISTA ◽  
FRANCISCO BEZERRA NETO ◽  
ÍTALO NUNES SILVA ◽  
MAIELE LEANDRO DA SILVA ◽  
ELIANE QUEIROGA DE OLIVEIRA ◽  
...  
Keyword(s):  
Experimental Design ◽  
Maximum Yield ◽  
Population Densities ◽  
Agronomic Efficiency ◽  
Green Mass ◽  
Sole Crop ◽  
Arid Conditions ◽  
Caatinga Biome ◽  
Brazilian Northeast ◽  
Semi Arid

ABSTRACT: The objective of this study was to evaluate the agronomic efficiency of intercropping combinations of carrot and arugula at different population densities in bicropping in the semi-arid conditions of the Brazilian Northeast. The study was conducted at the "Rafael Fernandes" Experimental Farm of the Universidade Federal Rural do Semi-Árido (UFERSA) during the period September 2011 to February 2012. The experimental design was of randomized complete blocks with treatments arranged in a 4 x 4 factorial scheme with four replications. The combinations were four population densities of carrot (40, 60, 80 and 100% of the recommended population in sole crop - RPSC) with four population densities of arugula (40, 60, 80 and 100% of the RPSC). The recommended population densities for sole crops of carrot and arugula are 500,000 and 1,000,000 plants per hectare, respectively. All treatments were fertilized with hairy woodrose (Merremia aegyptia L.), a spontaneous species of the Caatinga biome. The highest agronomic efficiency of carrot intercropped with arugula in bicropping was achieved in the combination of 40% of RPSC for the carrot and 100% of RPSC for the arugula. The commercial maximum yield (33.74 t ha-1) of carrot roots and the maximum yields of arugula green mass (8.06 and 2.67 t ha-1) in both cultivations were also obtained in the combination of population densities of 40% of RPSC for carrot and 100% of RPSC for arugula.

scholarly journals Productive and agro-economic benefits in beet-lettuce intercropping under organic manuring and population densities

2021 ◽  
Vol 10 (4) ◽  
pp. e10510413883
Author(s):  
Natan Medeiros Guerra ◽  
Francisco Bezerra Neto ◽  
Jailma Suerda Silva de Lima ◽  
Elizangela Cabral dos Santos ◽  
Renato Leandro Costa Nunes ◽  
...  
Keyword(s):  
Population Density ◽  
Cropping System ◽  
Arid Environment ◽  
Economic Benefits ◽  
Productivity Index ◽  
Calotropis Procera ◽  
Population Densities ◽  
Leaf Production ◽  
System Productivity ◽  
Economic Indexes

The use of a cropping system that provides producers with better land use, higher productivity per unit area, greater diversification in production, and consequently agro-economic advantages, has been the choice of vegetables producers. Therefore, the objective of this work was to evaluate the productive and agro-economic benefits of beet-lettuce intercropping under different equitable amounts of Merremia aegyptia and Calotropis procera biomass (20, 35, 50 and 65 t ha-1 on a dry basis) in different lettuce population densities (150, 200, 250, and 300 thousand plants ha-1), in two cropping years in semi-arid environment. In the cultures and in the intercropping, the production and its components and the agro-economic indexes were evaluated. The maximum production of beet commercial roots in intercropping with lettuce was obtained with a productivity of 33.77 t ha-1 in the amount of 65 t ha-1 of M. aegyptia and C. procera biomass incorporated into the soil and in the lettuce population density of 300 thousand plants per hectare, while the maximum lettuce leaf production was achieved with a productivity of 24.40 t ha-1 in the same combination of green manure amounts and lettuce population densities. The greatest agro-economic advantages of the beet intercropping with lettuce were achieved with a system productivity index (SPI) of 32.97 t ha-1, land equivalent coefficient (LEC) of 0.87 and a monetary equivalence ratio (MER) of 1.55, respectively, in the combination of 65 t ha-1 of M. aegyptia and C. procera biomass with a lettuce population density of 300 thousand plants per hectare.

CULTIVO DA SOJA EM SISTEMAS DE SEMEADURA EM LINHAS CRUZADAS E CONVENCIONAL

2017 ◽  
Vol 32 (1) ◽  
pp. 17
Author(s):  
André Ricardo Rodrigues ◽  
Magno Luiz de Abreu ◽  
Everton Dos Santos de Oliveira
Keyword(s):  
Glycine Max ◽  
Experimental Design ◽  
Population Density ◽  
Dry Matter ◽  
Cropping Systems ◽  
Spatial Arrangement ◽  
Cross Sectional ◽  
Mato Grosso ◽  
Significant Difference ◽  
Glycine Max L

A importância da soja para o agronegócio brasileiro é bastante expressiva, por este motivo existe um número significativo de pesquisas associadas às melhorias de produtividade desta cultura, neste sentido o presente trabalho buscou avaliar o desenvolvimento da soja quanto as suas características de produtividade em sistema de semeadura cruzada. O experimento foi implantado no campo experimental do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis em Latossolo Vermelho Distroférrico típico muito argiloso (68% de argila), com a cultivar TMG 132. O delineamento experimental foi de blocos casualizados em esquema fatorial 2X5, totalizando 10 tratamentos com 3 repetições cada, sendo que o primeiro fator corresponde aos dois sistemas de cultivo (semeadura cruzada e convencional) e, o segundo fator as 5 densidades populacionais (222000 plantas ha-1; 288000 plantas ha-1; 333000 plantas ha-1; 399000 plantas ha-1; 444444 plantas ha-1). Cada parcela foi constituída de 9 linhas de 4 metros, espaçadas em 0,45 metros. Para a área útil da parcela foi utilizado 5 linhas centrais por 2 metros de comprimento. Na área útil das parcelas foram avaliados produtividade, massa seca e os componentes de produção, a adubação foi depositada na linha de semeadura. Não se constatou diferença significativa na produtividade, número de grãos por vagem e na massa de mil grãos tanto nos diferentes sistemas quanto nas populações, como o sistema de semeadura cruzada necessita de maior quantidade de passadas de semeadora na área se constatou uma prática não viável.PALAVRAS-CHAVE: Densidade populacional, arranjo espacial, sistemas de plantio, Glycine max L. SOYBEAN CULTIVATION IN CROSS-SECTIONAL AND CONVENTIONAL SYSTEMSABSTRACT: The importance of soy for Brazilian agribusiness is very expressive, for this reason there is a significant number of research associated with productivity improvements in this culture, in this sense, the present study sought to evaluate the development of soy as the productivity characteristics in seeding system crossed. The experiment was deployed in the experimental field of the Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis in Latossolo Vermelho Distroférrico típico very argillaceous (68% of argil), It was used the cultivar TMG 132. Experimental design was a randomized block in factorial 2X5, totalling 10 treatments with 3 repetitions each, where the first factor corresponds to the two cropping systems (conventional and cross-seeding) and the second factor with 5 population density (222000 plants ha-1; 288000 plants ha-1; 333000 plants ha-1; 399000plants ha-1; 444444 plants ha-1). Productivity cross-seeding system. Each plot consisted of  9 lines of 4 meters, spaced at 0,45 meters, at the useful area of the central portion 5 by 2 meters long lines was used. In the usable area of the plots were evaluated productivity, dry matter and production components, fertilization was deposited in plant line. It did not find significant difference in productivity, number of grains per pods, and in thousand grains weight both in different systems and in populations, such as the system of cross-seeding needs greater quantity of operations in the planting it was not stated a viable practice.KEYWORDS: Population density, spatial arrangement, planting systems, Glycine max L.

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

2017 ◽  
Vol 21 (11) ◽  
pp. 791-797 ◽  
Author(s):  
Lenilton A. de A. Oliveira ◽  
Francisco Bezerra Neto ◽  
Aurélio P. Barros Júnior ◽  
Maiele L. da Silva ◽  
Ocimara F. N. Oliveira ◽  
...  
Keyword(s):  
Experimental Design ◽  
Population Density ◽  
Economic Efficiency ◽  
Economic Performance

ABSTRACT This 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.

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

2017 ◽  
Vol 21 (9) ◽  
pp. 611-617 ◽  
Author(s):  
Lúcio J. de Oliveira ◽  
Francisco Bezerra Neto ◽  
Jailma S. S. de Lima ◽  
Eliane Q. de Oliveira ◽  
Joserlan N. Moreira ◽  
...  
Keyword(s):  
Organic Matter ◽  
Economic Performance ◽  
Crop Production ◽  
Dry Matter ◽  
Production Systems ◽  
Semiarid Region ◽  
Vegetable Crop ◽  
Population Densities ◽  
Caatinga Biome ◽  
Matter Basis

ABSTRACT 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%.

scholarly journals Beetroot and radish production under different doses of green manures

2021 ◽  
Vol 10 (16) ◽  
pp. e66101623205
Author(s):  
Vitor Abel da Silva Lino ◽  
Francisco Bezerra Neto ◽  
Jailma Suerda Silva de Lima ◽  
Elizangela Cabral dos Santos ◽  
Renato Leandro da Costa Nunes ◽  
...  
Keyword(s):  
Experimental Design ◽  
Economic Efficiency ◽  
Production System ◽  
Calotropis Procera ◽  
Green Manures ◽  
Agronomic Efficiency ◽  
Green Manuring ◽  
Caatinga Biome ◽  
Cropping Seasons ◽  
Different Doses

Green manuring with spontaneous species from Caatinga biome has become an important strategy in production vegetables. One of the great challenges in tuberous vegetables production is to define an optimized quantity that provides a high productive yield with economic efficiency of production system. The objective of this study was to optimize agronomically and economically the production and its components of tuberous crops of beetroot and radish when manured with different amounts of green manures biomass, Merremia aegyptia and Calotropis procera from Caatinga biome, in two cropping seasons. The experimental design was a randomized complete block with five treatments and five replications. Treatments consisted of green manures amounts (16, 26, 36, 46, 56 t ha-1). The maximum agronomic efficiency of beetroot and radish was obtained with incorporation of 49.87 and 39.43 t ha-1 of M. aegyptia and C. procera, respectively, and the production maximum economic efficiency was reached when 36.14 and 36.48 t ha-1, respectively, of biomass of these green manures were added to the soil. The returns rate obtained in beetroot and radish cultivation using the manures optimized amounts were 1.42 and 1.32 reais obtained for each real invested in the production of these tuberous.

scholarly journals Beet-arugula intercropping under green manuring and planting density induce to agro-economic advantages

2021 ◽  
Vol 39 (4) ◽  
pp. 432-443
Author(s):  
Vitor AS Lino ◽  
Francisco Bezerra Neto ◽  
Jailma SS Lima ◽  
Elizangela C Santos ◽  
Renato LC Nunes ◽  
...  
Keyword(s):  
Population Density ◽  
Optimal Dose ◽  
Arid Environment ◽  
Productivity Index ◽  
Planting Density ◽  
Calotropis Procera ◽  
Population Densities ◽  
System Productivity ◽  
Green Manuring ◽  
Equivalent Ratio

ABSTRACT One of the biggest challenges in the intercropping system of two crops is to obtain the optimal dose of green manure and the adequate population density of the crops. So, the objective of this work was to evaluate the performance of beet and arugula intercropping, influenced by green manuring with Merremia aegyptia and Calotropis procera and arugula population densities in two cultivation years, in semi-arid environment. The experimental design used was in randomized complete blocks, with the treatments arranged in a 4 x 4 factorial scheme, with 4 repetitions. The first factor of this scheme consisted of equitable amounts of M. aegyptia and C. procera biomass (20, 35, 50 and 65 t ha-1 on a dry basis) and the second factor, by arugula population densities (40, 60, 80 and 100% of the recommended density for single cropping, corresponding to 400, 600, 800 and 1,000 thousand arugula plants ha-1). The production and its components were evaluated on beet and arugula. In addition to these characteristics, the following agro-economic indicators were also determined for each treatment: system productivity index (SPI), land equivalent coefficient (LEC) and monetary equivalent ratio (MER). The greatest agro-economic advantages of the beet with arugula intercropping were achieved with a system productivity index (SPI) of 53.47 t ha-1, land equivalent coefficient (LEC) of 0.84 and a monetary equivalent ratio (MER) of 1.56, respectively, combining 65 t ha-1 of M. aegyptia and C. procera biomass with the arugula population density of 1,000 thousand plants ha-1. The maximum optimized commercial productivity of beetroots in the system intercropped with arugula was 23.20 t ha-1 using 65 t ha-1 of M. aegyptia and C. procera and in the arugula population density of 1,000 thousand plants ha-1, while the maximum arugula productivity intercropped with beet was 9.65 t ha-1, in the same combination of green manures amount and arugula population density.

Response of four grain legumes to water stress in south-eastern Queensland. IV. Interaction with sowing arrangement

1983 ◽  
Vol 34 (6) ◽  
pp. 661 ◽  
Author(s):  
RJ Lawn
Keyword(s):  
Water Stress ◽  
Population Density ◽  
Water Use ◽  
Spatial Arrangement ◽  
Crop Growth ◽  
Yield Response ◽  
Crop Water ◽  
Area Index ◽  
Crop Water Use ◽  
South Eastern

The effect of spatial arrangement and population density on growth, dry matter production, yield and water use of black gram (Vigna mungo cv. Regur), green gram (V. radiata cv. Berken), cowpea (V. unguiculata CPI 28215) and soybean (Glycine rnax CP126671), under irrigated, rain-fed fallowed and rain-fed double-cropped culture was evaluated at Dalby in south-eastern Queensland. Equidistant spacings increased initial rates of leaf area index (LAI) development and crop water use compared with 1-m rows at the same population densities. In the irrigated and rain-fed fallowed treatments, where more water was available for crop growth, both seed yields and total crop water use were higher in the equidistant spacings. However, in the double-cropped treatment, where water availability was limited, there was no yield difference between rows and equidistant spacings, primarily because initially faster growth in the latter was offset by more severe water stress later in the season. Higher population density also increased initial crop growth rate and water use, particularly in the equidistant spacings. However, there was no significant yield response to density, presumably because subsequent competition for light/ water offset initial effects on growth. Although absolute yield differences existed between legume cultivars within cultural treatments, there were no significant differential responses to either spatial arrangement or population density among these four cultivars.

Effects of crop sequence and rainfall on population dynamics of Fusarium solani f.sp. phaseoli in soil

1992 ◽  
Vol 70 (10) ◽  
pp. 2005-2008 ◽  
Author(s):  
Robert Hall ◽  
Lana Gay Phillips
Keyword(s):  
Population Dynamics ◽  
Phaseolus Vulgaris ◽  
Population Density ◽  
Fusarium Solani ◽  
Population Densities ◽  
Total Rainfall ◽  
Colony Forming Units ◽  
Bean Crop ◽  
Previous Summer ◽  
Crop Sequence

Evidence is presented that population dynamics of Fusarium solani f.sp. phaseoli in soil depend on the effects of crop sequence and rainfall on parasitic activities of the pathogen. In a rotation trial started in 1978 and conducted over 14 years, population densities (colony-forming units/g) of the fungus in soil remained below 50 in treatments (fallow, repeated corn, repeated soybean) where the preferred host plant (common bean, Phaseolus vulgaris) was not grown. Where bean was grown every 3rd year or every year, population densities reached 475 and 660, respectively, by 1984. Thereafter, population densities of the fungus fluctuated widely from year to year in both rotation and repeated bean treatments. In the rotation treatment, peaks in population density of the pathogen coincided with the years of bean production. In repeated bean plots between 1985 and 1991, population density of the fungus in June was significantly correlated (r = 0.77, p = 0.04) with total rainfall received during the previous summer (June–August). It is postulated that higher rainfall during the growing season of the bean crop stimulated root growth and root infection, leading to the accumulation of higher levels of potential inoculum in infected tissue and the release of higher levels of inoculum into the soil by the following June. Key words: Fusarium solani f.sp. phaseoli, bean, Phaseolus vulgaris, rainfall, crop rotation.

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