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.

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.

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 Competition Indices of Safflower and Faba Bean Intercrops as Affected by Fertilizers

2019 ◽  
Vol 11 (1) ◽  
pp. 130-137
Author(s):  
Mahmoodreza SAEIDI ◽  
Yaghoub RAEI ◽  
Rouhollah AMINI ◽  
Akbar TAGHIZADEH ◽  
Bahman PASBAN-ESLAM ◽  
...  
Keyword(s):  
Faba Bean ◽  
Yield Components ◽  
Cropping Systems ◽  
Block Design ◽  
Cropping System ◽  
Productivity Index ◽  
Crop Species ◽  
System Productivity ◽  
Yield And Yield Components ◽  
Sole Cropping

Cropping systems of safflower (Carthamus tinctorius L.) with faba bean (Vicia faba L.) under different fertility were compared with sole cropping of each crop during 2015 and 2016 at the Research Farm of Tabriz University in Iran. The treatments were cropping systems (safflower and faba bean sole croppings, intercropping systems of safflower and faba bean with ratios of 1:1 and 2:1), and nutrient levels (100% chemical fertilizers, 60%, 30% chemical + biofertilizers and no fertilizer). A factorial set of treatments based on a randomized complete block design replicated three times was used. Cropping system and fertility effects were significant for yield and yield components of each crop. Yield and yield components were increased with the integrated use of 60% chemical plus biofertilizers for both years, while seed yield was reduced by intercropping. Maximum land equivalent ratio (LER), relative value total (RVT), system productivity index (SPI) and monetary advantage index (MAI) were achieved in nutritive level of 60% chemical plus biofertilizers as intercropped plants in ratio of 1:1 for both years. The total actual yield loss (AYL) values were positive and greater than zero in all mixtures, indicating an advantage from intercropping over sole crops. Intercropped safflower had a higher relative crowding coefficient (RCC) than intercropped faba bean, indicating that safflower was more competitive than faba bean in intercropping systems. From this study, it is inferred that intercropping (safflower and faba bean) with integrated use of the reduced chemical and biofertilizers may give better overall yield and income than sole cropping of each crop species.

scholarly journals Production efficiency in cultivar combinations of beet and cowpea

2020 ◽  
Vol 38 (4) ◽  
pp. 445-453
Author(s):  
Jeisy RS Ribeiro ◽  
Francisco Bezerra Neto ◽  
Jailma SS Lima ◽  
Aridênia P Chaves ◽  
Josimar N Silva ◽  
...  
Keyword(s):  
Experimental Design ◽  
Product Quality ◽  
Production Efficiency ◽  
Arid Environment ◽  
Additional Treatment ◽  
Economic Indicators ◽  
Productivity Index ◽  
System Productivity ◽  
Cowpea Cultivars ◽  
Semi Arid

ABSTRACT For the simultaneous achievement of productivity in beet and cowpea associations, it is necessary to take into consideration the choice of cultivar combinations that offer a response in terms of production, product quality and efficiency of the intercropping. Thus, the objective of this work was to evaluate the viability of production of beet cultivars combinations with cowpea cultivars in two cropping years (2016 and 2017) in a semi-arid environment. The treatments arranged in a 2 x 4 factorial scheme, with four replications, consisted of the combination of two beet cultivars (Early Wonder and Fortuna) with four cowpea cultivars (BRS Tumucumaque, BRS Cauamé, BRS Guariba and BRS Itaim), in addition to monocultures of these cultivars, as an additional treatment. The experimental design used was in randomized complete blocks. 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 productive variables of cowpea and of the agro-economic indicators of the intercropping systems were higher in the second cropping year (2017), while the productive variables of beet were higher in the first cropping year (2016). The Early Wonder and Fortuna cultivars when in intercropping with the cowpea cultivars had similar commercial productivities of roots (11.29 and 11.93 t ha-1), respectively. The cowpea cultivar BRS Tumucumaque (1.38 t ha-1) was the most productive when intercropped with beet. The combinations of cultivars that had the highest agro-economic efficiencies and complementarity were those originated from the associations of BRS Tumucumaque (SPI = 18.43, LEC = 0.52 and MER = 1.42) and BRS Guariba (SPI = 18.42, LEC = 0.52 and MER = 1.48) with the Early Wonder beet cultivar.

Transforming Malta Orchard into Agroforestry System with Different Crops for Improving Productivity, Profitability and Land Uses

2021 ◽  
Vol 24 (1) ◽  
pp. 113-125
Author(s):  
AK Das ◽  
MA Rahman ◽  
SR Saha ◽  
NS Sarmin ◽  
MA Hoque ◽  
...  
Keyword(s):  
Block Design ◽  
Cropping System ◽  
Agroforestry System ◽  
Agroforestry Systems ◽  
Economic Benefits ◽  
Cost Ratio ◽  
Land Uses ◽  
Promising Alternative ◽  
System Productivity ◽  
Sole Cropping

Sustainable agricultural practices like agroforestry systems are being advocated to overcome various problems of farming. A young malta (Citrus sinensis) orchard (3 years old) was transformed into a fruit tree-based agroforestry system in which the performances of summer (okra and Indian spinach) and autumn (mungbean and kangkong) crops and year-round spices (ginger and turmeric) were evaluated following randomized complete block design (RCBD) with three replication each and eventually compared between agroforestry systems and respective sole cropping (control) from March 2018 to February 2019 at BSMRAU field. The experimental results revealed that the yields of the associated crops deprived when grown at the closest row position from the bed of malta tree and spices. Yields of okra, Indian spinach, mungbean, kangkong, turmeric and ginger were reduced by 7.57, 6.52, 14.86, 13.26, 9.70 and 16.23%, respectively under agroforestry system as compared to control. However, malta yield was increased by 5.35% in agroforestry system than control trees. The findings also indicated that the crops in agroforestry system was less hindered by the shade effect of malta trees due to less dense canopy of young malta trees. In comparison to sole cropping system, the higher benefit-cost ratio (BCR) (2.93) and land equivalent ratio (LER) (2.83) were obtained in the studied agroforestry system that explicated higher system productivity and land uses. Notable improvement of total nitrogen and organic matter were obtained in the soil under agroforestry system. Therefore, malta-based agroforestry system can be a promising alternative to provide higher economic benefits, boosting food and nutritional security, improving soil nutrient status and utilization of land. Ann. Bangladesh Agric. (2020) 24(1) : 113-125

Growth dynamics and agronomic-economic benefits of pea - oat and pea - barley intercrops

2012 ◽  
Vol 63 (1) ◽  
pp. 45 ◽  
Author(s):  
Christos A. Dordas ◽  
Dimitrios N. Vlachostergios ◽  
Anastasios S. Lithourgidis
Keyword(s):  
Growth Rate ◽  
Growth Dynamics ◽  
Economic Benefits ◽  
Productivity Index ◽  
Hordeum Vulgare L ◽  
System Productivity ◽  
Growing Seasons ◽  
Land Use Efficiency ◽  
Actual Yield ◽  
Economic Indices

Pea (Pisum arvense L.) is an important legume in many areas of the world, which is used for forage and grain production and could be used in intercropping systems. Intercropping of pea with oat (Avena sativa L.) and barley (Hordeum vulgare L.), in two seeding ratios 60 : 40 and 80 : 20, was compared with pea and two cereal monocrops for two growing seasons (2008–10), at the Aristotle University of Thessaloniki, Greece. The effect of the intercropping systems was determined on growth rate, plant height, chlorophyll content, DM, and N yield. Also, several competition and economic indices were used to evaluate the intercropping systems, such as land equivalent ratio (LER), relative crowding coefficient (K), aggressivity (A), competitive ratio (CR), actual yield loss (AYL), system productivity index (SPI), monetary advantage index (MAI), and intercropping advantage (IA). Growth rate of pea and cereals was lower by an average of 39 and 64%, respectively, in the intercrops than in the monocrops. DM yield was the highest in barley monocrop (13.00 Mg ha–1) followed by P80O20 intercrop (11.73 Mg ha–1). Pea monocrop, and P80O20 and P80B20 intercrops showed the highest crude protein (CP) concentration (137, 132 and 130 g kg–1 DM, respectively), whereas P80O20 intercrop also produced the highest CP yield (1552 kg ha–1). The LER, K, and AYL values (average 1.09, 1.75 and 0.29, respectively), were greater for both pea-oat intercrops compared with the pea-barley intercrops (average 0.98, 0.92 and 0.06, respectively), indicating that in these systems there was an advantage of intercropping for exploiting the resources of the environment. The A, CR, and partial AYL values in all intercrops were greater for oat and barley than pea, which indicated that cereals were more competitive partners than pea. The highest MAI, IA, and SPI values were recorded for P80O20 followed by P60O40 intercrops indicating that these intercropping systems were the most profitable. The results from this study showed that both pea-oat intercrops were more productive with high CP yield, and also they showed the best land-use efficiency.

scholarly journals Biological and economic efficacy of cowpea-radish association fertilized with organic manure in diverse planting arrangements

2021 ◽  
Vol 10 (11) ◽  
pp. e133101119298
Author(s):  
Renato Leandro da Costa Nunes ◽  
Francisco Bezerra Neto ◽  
Aurélio Paes Barros Júnior ◽  
Jailma Suerda Silva de Lima ◽  
Josimar Nogueora da Silva ◽  
...  
Keyword(s):  
Yield Loss ◽  
Spatial Arrangement ◽  
Productivity Index ◽  
Calotropis Procera ◽  
System Productivity ◽  
Land Equivalent Ratio ◽  
Net Revenue ◽  
Economic Efficacy ◽  
Actual Yield ◽  
Economic Indices

Green manuring and the spatial arrangement of planting intercropped crops are manageable factors to increase the bioeconomic effectiveness of intercropped systems. Therefore, the object of this study was to work out the bio-economic efficacy in cowpea-radish association under diverse Calotropis procera biomass amounts and planting arrangements in two cultivation seasons through biological and economic indices. The research was conducted in a design of randomized complete blocks with four repetitions. The treatments were made of combination of four C. procera biomass amounts placed into the soil (20, 35, 50 and 65 t ha-1) with three cowpea-radish planting arrangements (2:2, 3:3 and 4:4). The biological indices, land equivalent ratio (LER), area-time equivalency ratio (ATER), actual yield loss (AYL), and system productivity index (SPI) and the economic indicators gross revenue (GR), net revenue (NR), rate of return (RR) and profit margin (PM) were evaluated to express the bio-economic efficacy of the cowpea-radish association. The greatest biological efficiencies of the cowpea-radish association were attained with LER and ATER of 1.75 and 1.25; AYL and SPI of 1.48 and 13.15 t ha-1, respectively, in the amount of 62 t ha-1 of C. procera biomass in the planting arrangements 2: 2 and 3: 3. The largest net economic revenue (NR) of 16,382.85 R$ ha-1 was attained in the amount of 52 t ha-1 of C. procera in the planting arrangement 3: 3.

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.

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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