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Revista mexicana de ciencias agrícolas
Print version ISSN 2007-0934
Rev. Mex. Cienc. Agríc vol.15 n.2 Texcoco Feb./Mar. 2024 Epub June 21, 2024
https://doi.org/10.29312/remexca.v15i2.3248
Articles
The coffee agroecosystem: traditional polyculture versus commercial polyculture in Chocamán, Veracruz
1Campus Veracruz-Colegio de Postgraduados. Carretera federal Xalapa-Veracruz km 88.5, Tepetates, Manlio Fabio Altamirano, Veracruz, México. CP. 91690. Tel. 229 2010770. (parturo@colpos.mx).
2Universidad Autónoma Chapingo-CRUO. Carretera Huatusco-Xalapa km 6, Huatusco, Veracruz. CP. 94100. (espreschoca@yahoo.com.mx).
Coffee cultivation has strong social and historical-cultural roots in the mountainous area of the state of Veracruz. Its ancestral cultivation was carried out in agroforestry systems, the original pattern of which has been modified. The association of coffee with cash crops is conceived as an option to address its low profitability. Therefore, the objective was to compare the level of sustainability of traditional polyculture coffee versus commercial polyculture coffee in three communities in Chocamán, Veracruz during 2021. A survey and a sampling were carried out to estimate plant and soil biodiversity; a physical-chemical analysis of the soil was also performed. Regarding the environmental aspect, organic matter had a higher percentage in commercial polyculture coffee. In the economic dimension, commercial polyculture coffee was 50% more profitable compared to traditional polyculture coffee. On the social side, there were differences in schooling, age of producers, off-farm activities, level of organization and type of agriculture. It was concluded that commercial polyculture coffee had better economic indicators, while traditional polyculture coffee achieved better environmental and social indicators.
Keywords: agroforestry systems; biodiversity; soil quality; sustainability
El cultivo del café tiene un fuerte arraigo social e histórico-cultural en la zona montañosa del estado de Veracruz. Su cultivo ancestral se realizaba en sistemas agroforestales, cuyo patrón original se ha modificando. La asociación de café con cultivos comerciales se concibe como una opción para afrontar su baja rentabilidad. Por tanto, el objetivo fue comparar el nivel de sustentabilidad de café policultivo tradicional, contra café policultivo comercial, en tres comunidades de Chocamán, Veracruz durante 2021. Se realizaron encuesta y muestreo para estimar biodiversidad vegetal, edáfica y análisis físico-químico del suelo. En lo ambiental, la materia orgánica tuvo mayor porcentaje en el café policultivo comercial. En la dimensión económica, el café policultivo comercial fue 50% más rentable respecto al café policultivo tradicional. En la parte social, hubo diferencias en escolaridad, edad de los productores, actividad extrafinca, nivel de organización y tipo de agricultura. Se concluyó que el café policultivo comercial tuvo mejores indicadores económicos, mientras que el café policultivo tradicional alcanzó mejores indicadores ambientales y sociales.
Palabras clave: biodiversidad; calidad del suelo; sistemas agroforestales; sustentabilidad
Introduction
Coffee production in Mexico is important due to the cultivated area and the population involved (Secretaría de Agricultura, 2023), in addition to contributing to the socioeconomic and environmental components in coffee-growing areas (Manson et al., 2008; Pronti and Coccia, 2021). It is grown in shade and traditional polyculture systems (Moguel and Toledo, 1999). However, traditional production systems in the state of Veracruz, Mexico, are modified as commercial or specialized polyculture in order to be more profitable, reduce damage due to diseases, pests, and international prices, and adopt intensive production models (Henderson, 2019; Cerda et al., 2020).
The state of Veracruz has produced coffee since the late eighteenth century (Ejea, 2009), ranking second nationally with 24.7% of production, Olguín et al. (2011); Cruz-Aguilar et al. (2014); CEDRSSA (2019) reported that commercial polyculture in Tlapacoyan, Veracruz, is more productive than monocultures, and labor productivity exceeds opportunity cost.
Traditional shade-grown coffee systems provide ecosystem benefits and services (Beer et al., 2004; Komar, 2006; De Beenhouwer et al., 2013). In addition, certification initiatives, such as sustainable coffee or rainforest, include shade trees as an environmental indicator (Bravo-Monroy et al., 2016).
Coffee systems are distinguished in terms of shade type into rustic, traditional polyculture, commercial polyculture, specialized shade, and full sun monoculture (Moguel and Toledo, 1999; Escamilla-Prado and Díaz-Cárdenas, 2016). Research contrasting traditional polyculture coffee with commercial polyculture coffee in Veracruz is scarce.
Therefore, the objective was to compare the level of sustainability of traditional polyculture coffee (TPC) versus commercial polyculture coffee (CPC) in the municipality of Chocamán, Veracruz. Under the hypothesis that the TPC presents higher levels of sustainability compared to the CPC.
Materials and methods
Tetla, Chocamán, and San José Neria belong to the municipality of Chocamán, geographically located in the center of the state of Veracruz (18° 58’ and 19° 02’ north latitude; 97° 00’ and 97° 06’ west longitude) at altitudes of 1 100 to 2 200 m (SIM, 2019), a region that occupies a total area of 44.4 km2 (Figure 1).
The research was descriptive and comparative to characterize production systems based on socioeconomic and environmental indicators. The methodology was adapted from (Sarandón and Flores, 2009). The sample size, determined based on plot and time availability, was 26 coffee plots in the communities under study, of which 13 corresponded to the TPC system and 13 to the CPC system (Figure 2). The selection of the plots was adjusted to the typology indicated by Escamilla-Prado and Diaz-Cárdenas (2016).
A structured questionnaire was designed to collect economic, social, and technological information from the systems (Kvale and Brinkmann, 2009), with six sections: producer and farm profile, agronomic management, economic and technological component, and level of acceptance. Developed social, economic, and environmental indicators were used to measure multidimensional sustainability.
Each dimension and variable were weighted, with each variable including 12 indicators. Biodiversity measurement was carried out with simple random sampling (Mostacedo and Fredericksen, 2000) using the quadrant method (two per plot). Quadrants of 10 m x 10 m per farm were randomly placed, and the following was measured: density, cover, and frequency of plants (trees, shrubs, herbaceous plants), height, and diameter at breast height (DBH) of tree species.
Quadrants were randomly selected from a total of 10 located in each plot. Coffee planting density, variety, age, and percentage of replanting were estimated. In CPC, banana plants, height, DBH, and variety were counted. Leaf litter was collected in the same quadrant. Two pits measuring 20 cm long x 20 cm wide x 20 cm deep were made per plot, which were randomly placed.
Likewise, in the 10 m x 10 m quadrant, a diagonal line was drawn from north to south, and the 0.50 x 0.50 cm frame was thrown to locate the sampling points. The monoliths were separated into two layers of depth (0-10, 10-20). Using entomological tweezers, organisms larger than 2 mm in size were extracted for taxonomic identification up to order, weighed and counted. The organisms were stored in vials with 150 ml of ethyl alcohol (96°).
Chemical analyses of the soil were total organic carbon, pH, electrical conductivity, nitrogen, phosphorus, potassium, organic matter, and soil type. Descriptive statistical analysis, multiple correspondence analysis for each dimension of the study, and non-hierarchical cluster analysis were performed using the SPSS program.
Results and discussion
Producer profile
In the TPC, the average age of the producers was 64 years, with 35 years of experience in cultivation. In terms of schooling, 31% are illiterate, and 54% have elementary education. Among the landowners, 15% are ejidatarias (female shareholders of communal land). The average annual income per producer is $25 550.00 MXN, with an average yield of 2.15 t ha-1 of cherry coffee and a sale price of $7.00 to $8.00 MXN kg-1 (2019-2020 cycle). To supplement their income, 38% are engaged in off-farm activities or grow an alternative crop.
In some cases, they associate coffee with myrtle (Myrtus communis L.) and orange jasmine (Murraya paniculata). In addition, they have income from the sale of firewood, ground coffee, and crops such as tabaquero chili (Capsicum spp.) and serrano chili (Capsicum spp.). Family labor is common, with nuclei of five members on average.
In the CPC, the average age of the producers was 58 years old, with 31 years of experience in cultivation. Thirty-eight percent studied the elementary level and 23% university and postgraduate levels. The ejidatarias represent 7% of the landowners. The average annual income from coffee sales is $54 769.23 MXN, with average yields of 4 t ha-1 (2019-2020 cycle). Unlike TPC, cash crops have high planting densities and represent 60% of annual household income.
For example, banana (Musa spp.) leaves and macadamia (Macadamia spp.) are crops associated with coffee plantations. In addition, crops such as sugarcane (Saccharum officinarum) and chayote (Sechium edule) contribute to the producer’s economy. The use of family labor is lower compared to the TPC. Off-farm activities are a key factor in both systems. In the case of the TPC, 46% of income is from off-farm activities, compared to the CPC, where they contribute up to 84% (Table 1).
Variable | TPC* | CPC* |
---|---|---|
Age of the producer | Average: 64 (46-85) | Average: 58 (44-68) |
Maximum level of schooling | University 23% Elementary school, 54% | University 15% Elementary school 38% |
Gender | 15% women, 85% men | 8% women; 92% men |
Average time as coffee producer | 35 years (3-70) | 31 years (6-54) |
Average years associating a cash crop* | 11 (7-20) | 21 (5-40) |
Average income from cherry coffee sales | $ 23 05.697 | $ 64 969.23 |
Off-farm activities | 38% with activity 62% without activity | 69% with activity 31% without activity |
Average size of the family | 5 (2-11) | 4 (2-8) |
*= 2019-2020 cycle.
Typology of production system
TPC was predominant in Tetla and absent in San José Nería. Based on the altitudinal strata, Tetla is located at a higher altitude, where 92% of the producers grow an average of 1.6 ha of coffee, with a predominance of ejido tenure (77%). The traditional tall varieties of C. arabica cultivated are: Bourbon, Criollo or Typica, Caturra, and Garnica, but due to rust, they were replaced by varieties such as Colombia, Costa Rica, Marseillaise, Oro Azteca, Geisha, and Questlansase.
The latter two with excellent quality potential and tolerance to rust, productive, and with good organoleptic quality (Henderson, 2019). However, they are varieties adapted to intensive management. The process of renovating traditional coffee plantations began 10 years ago on 15% of the farms. By the year 2020, on average, 40% of TPC farms had been renovated.
In terms of management, 7.6% is certified organic (CERTIMEX agency), and 92.4% is conventional. The TPC produced an average of 1.93 t ha-1 of cherry coffee (2019-2020), with records of 1.9 t ha-1 to 2.89 t ha-1. The CPC was located mainly in San José Neria (76%) and partially in Chocamán. Farm areas of 1 ha predominate in 39.5%, and the ejido predominates in 92.3% as land tenure.
The varieties grown are: Typica or Criollo, Bourbon, Caturra, and Garnica. The dominant varieties are Colombia, Costa Rica, Geisha, and Marseillaise, with conventional management (84.6%) and an average production of 4.79 t ha-1 ( 2019-2020 cycle). Coffee plantations have been renovated in 70%, where the Humic Andosol (Th) loamy soil predominates (Table 2).
Characteristics | TPC | CPC |
---|---|---|
Area cultivated with coffee | Average: 1. 62 ha (0.5-6.5)* | Average: 1.63 (1.0-2.75) |
Land tenure | Ejido, 77%, private, 23% | Ejido, 92.3%, private, 7.6% |
Common varieties in old plantations | Bourbon, Criollo, Caturra, and Garnica | Criollo, Bourbon, Caturra, and Garnica |
Varieties currently grown | Colombia, Costa Rica, Marseillaise, Geisha, Questlansase, and Oro Azteca | Colombia, Costa Rica, Geisha, and Marseillaise. |
Density of coffee plants ha-1 | Average: 3 219 (2 400-4 500) | Average: 3 553 (2 500-6 400) |
Age of renewed coffee plants | Average: 4 years (1-10) | Average: 5 years (3-10) |
Average percentage of renewed coffee plantation | 41 | 70 |
Average percentage of organic coffee | 7.6 | 15.3 |
Average percentage of conventional coffee | 92.3 | 84.6 |
Minimum yield | 1.911 t ha-1 | 1.125 t ha-1 |
Maximum production | 2.89 t ha-1 | 5.94 t ha-1 |
Predominant type of management | Conventional | Conventional |
*= minimum and maximum values in parentheses.
Agro-environmental characteristics
Chocamán has 9 738 inhabitants, of which 28% (420 families) are engaged in coffee cultivation, cattle farming, and agribusiness. Tetla, with its very steep terrain, has 2 379 inhabitants, of which 38% (128 families) are engaged in coffee growing. San José Neria is home to 1 522 people, 56% of them (190 families) are engaged in coffee, sugarcane, and livestock production (Table 3) (PueblosAmerica.com, 2023).
Variable | Tetla | Chocamán | San José Neria |
---|---|---|---|
Altitude (m) | 1 524 | 1 360 | 1 210 |
Climatological classification | Humid temperate | Humid temperate/humid semi-warm temperate | Humid semi-warm temperate |
Average slope on coffee farms (%) | 26 | 17 | 11 |
Average of shade on coffee farms (%) | 59 | 53 | 46 |
Average height of trees (m) | 12.33 | 14.85 | 10.33 |
Average DBH of trees (cm) | 31.04 | 24.56 | 39.1 |
Type of soil* | Clayey | Loamy | Loamy |
Crops with economic importance | Myrtle, tabaquero chili, orange jasmine, serrano chili, banana leaves | Macadamia, banana leaves | Sugarcane, banana leaves, chayote, macadamia |
*Determination in accordance with NOM-021-RECNAT-2000.
Biodiversity and composition of coffee plantations
A total of 80 plant species belonging to 75 genera and 40 families were recorded in the systems. Of particular note are the Solanaceae (8), Fabaceae (7), and Rutaceae (6). The TPC had 72 species, of which 65.5% belong to the tree stratum, 11.1% to the shrub stratum, and 23.6% to the herbaceous stratum. The CPC presented 45 species, with 80% tree stratum, 4.4% shrub stratum, and 15.5% herbaceous stratum. Of the total species, 30 were present in both systems, 37 in TPC and 13 in CPC.
Fruit trees are the main component of the TPC and ornamental plants (Murraya paniculata and Myrtus communis) with economic value, which represent an additional annual income. In the CPC, they have plants of banana (Musa acuminata Colla) for leaves and macadamia (Macadamia integrifolia and M. tetraphylla). Due to its structure, the TPC obtained the best biodiversity metrics, except for relative abundance, where the CPC stood out for the presence of Musa acuminata as an associated cash crop (Table 4).
Soil quality
TPC soils had an average pH of 4.98 (acidic), and those of CPC, 5.2 (moderate acidity). When the pH is higher than 5.5, Al+3 is neutralized and ceases to be a problem for coffee growth (Sadeghian, 2016). In this case, 53% of the TPC farms reached levels >2 of Al+3, and in CPC, 30% reached levels >2 meq 100 g-1 in Al+3 content. This indicates levels of Al toxicity (Casierra and Aguilar, 2007).
The average organic matter content was 6.55, with a medium to high range for TPC. The CPC had an average of 5.71%, with a minimum to low range of OM, results consistent with the findings of López-Báez et al. (2016). Organic matter in soils comes from leaf litter produced by coffee plants and shade trees (Farfán and Urrego, 2007).
The organic matter values identified indicate that, although temperature and precipitation conditions exist in the region, acidic pH is likely to affect humification and mineralization (Noriega-Altamirano et al., 2014). Regarding the epigeal macrofauna, 10 varieties were identified, where ants and earthworms were the most abundant in both systems, with the TPC having the highest number of macroorganisms per sampled area (Figure 3).
TPC vs CPC profitability
The CPC farm obtained the best income from the sale of coffee products ($75 763.09 MXN), with high production costs ($29 142.77 MXN) and higher profit ($46 620.31 MXN), differing from what was reported by Jezeer et al. (2018), where the economic return was similar for shade coffee type (Table 5).
Indicator | TPC | CPC |
---|---|---|
Investment cost* | 452 570.92 | 391 953.31 |
Operating cost* | 10 502.46 | 29 142.77 |
Total annual income* | 38 296.15 | 75 763.08 |
Annual profit* | 27 793.69 | 46 620.31 |
Daily profit* | 76.15 | 127.73 |
B/C Ratio | 0.22 | 0.53 |
*= in Mexican pesos (MXN).
Van Asten et al. (2011) determined the profitability of associated coffee and banana systems compared to monoculture in C. arabica L. and C. canephora; they concluded that coffee-banana intercropping is more profitable than banana-coffee monoculture (Table 5). In the TPC, its various products and by-products are not economically valued because they are for self-consumption.
The CPC system income was 49.9% higher than the TPC, and profits were also higher, allowing them to be reinvested. The TPC allocates 27% of its income to its operation, unlike the CPC, where 38% of the income goes to its maintenance and operation. Regarding TPC, it has a lower use of inputs with reduced production costs and family labor at 84%.
Sustainability analysis
The environmental sustainability of the systems was average in terms of soil quality (0.62 for TPC and 0.73 for CPC). Nutrients and physical and chemical parameters were above average. The diversity of edaphic and genetic macrofauna was higher in the TPC. The vegetation cover of the soil was similar; the presence or absence of cover is related to the control of weeds by producers.
The slope of the land is an important factor in water erosion; the TPC has slopes between 10% and 55%, while the CPC has a lower risk of soil loss due to its low slope. Both polycultures had a high density of vegetation and leaf litter, which significantly reduces erosion (Figure 4). The biggest difference between systems was the indicator of plant diversity.
An average economic sustainability was obtained in 92% of the CPC farms and 77% of the TPC farms, with a B/C ratio of less than 1 for TPC and 1.49 for CPC. In the gross income per farm indicator, 100% of TPC presented zero sustainability, and 8% of CPC was highly sustainable.
In terms of diversity in income generation, the TPC had a medium sustainability (0.5), contrary to the CPC with 0.8. Regarding commercial diversification, the TPC had a score of 0.07 since most farms are engaged exclusively in the sale of coffee, unlike the CPC, where 92% obtain at least two products to market. In terms of diversification of production for self-consumption, in TPC, it presented low sustainability since 30% of farms do not diversify for self-consumption, while in CPC, 92% of farms have at least two species of food importance (Figure 5).
In the social dimension, 85% of the TPC farms had a medium sociocultural sustainability (0.605), as did the CPC (0.592). The TPC coffee system is highly accepted, and with a high willingness to remain in the activity. Similarly, CPC producers reported high acceptance. In terms of cultural tradition, both systems had a high score (0.71 and 0.73). The basic needs satisfaction indicator presented values of 0.2 and 0.3, indicating low satisfaction of basic needs (Figure 6).
Conclusions
The coffee agroecosystem in traditional polyculture (TPC) differs in structure, management, diversity of plant species, edaphic macrofauna, as well as the use and purpose of the species, with respect to commercial polyculture coffee (CPC). The ecological-environmental differences between TPC and CPC are related to physical, sociocultural, socio-environmental, and edaphoclimatic factors.
In both systems (TPC and CPC), there is great acceptance of coffee cultivation and willingness of producers to remain in the activity due to their attachment to the crop, tradition, and good profits if international coffee prices are high. The TPC and CPC reflect the socio-environmental conditions of coffee production and apply different strategies, based on a logic differentiated by the producer’s objectives, and influenced by the level of backwardness, marginalization, education, training, and food security.
Producers with TPC are from peasant agriculture and opt for this system because it allows them to survive, unlike CPC producers who have higher incomes and have a different socioeconomic profile. The TPC presented a higher level of environmental sustainability, while the CPC presented greater economic sustainability. Finally, it is important to promote strategies to improve coffee agroecosystems, so that they are an important source of food, income, and biodiversity conservation. Some of them are their own brand of coffee, and agroforestry systems with priority to include food crops or crops of high commercial value.
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Received: January 01, 2024; Accepted: February 01, 2024