Assessing Yield, Growth and Climate Traits in Agroforestry Systems in Southern Brazil

Schwerz, Felipe; Caron, Braulio Otomar; Nardino, Maicon; Elli, Elvis Felipe; Stolzle, John Robert; Carvalho, Luiz Gonsaga de; Neto, Durval Dourado

doi:10.1080/10549811.2020.1746913

Cited by 2 publications

(3 citation statements)

References 45 publications

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“…Before PCA, the data were standardized to mean 0 (zero) and variance 1. The results are shown in a biplot with the two PCs, as those that presented a minimum cumulative variance of 70% were sought [ 25 ] to detect possible association patterns based on similarities-dissimilarities of the morpho-agronomic and microclimatic variables [ 25 , 35 ]. These analyses were performed with the Statistical Analysis System v. 9.1 [ 37 ].…”

Section: Methodsmentioning

confidence: 99%

“…Schwerz et al [ 25 ] evaluated the leaf area index, dry matter, yield, juice volume, solar radiation interception, and efficient use of solar radiation in sugar cane ( Saccharum officinarum L.) in AS arrays and found important differences in productive and physiological variables between the AS system and monoculture. They attributed this behavior to the tree canopy, interactions between plants, plantation spatial arrangement, microclimatic conditions, and competition for resources such as radiation.…”

Section: Introductionmentioning

confidence: 99%

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Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

et al. 2022

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Maize (Zea mays L.) is native to Mexico, in which wide genetic diversity can be found; however, maize is at risk of genetic erosion, and agroforestry systems (ASs) can be a strategy for conservation and sustainable use of this crop. The objective of this study was to evaluate the variation in the morpho-agronomic characteristics of three native maize races, Tuxpeño, Olotillo × Tuxpeño and Ratón × Tepecintle, cultivated in different AS in a tropical climate of Veracruz, Mexico, as well as its association with microclimatic conditions. In 2019, experiments were established in the localities La Gloria and La Luisa, Veracruz, where the three maize races are cultivated, in a randomized complete block design with three replications in a 3 × 4 factorial scheme (three native maize races and three AS arrrays, plus monoculture). Ten morpho-agronomic variables were recorded in each experiment and were analyzed by analysis of variance (ANOVA; Tukey’s post-hoc test, all p ≤ 0.05) and principal component analysis (PCA). Six morpho-agronomic characteristics showed significant differences for the race × system interaction. Consistently standing out both in the Myroxylon with 2.8 m × 2.0 arrays and in the monoculture was the Olotillo × Tuxpeño race, as there were no variations (p ≥ 0.05) in 50% of its morpho-agronomic characteristics. The first three PCs explained 87.7% of the cumulative variance, determined by five variables of the ears, three of the grain and plant height, which were associated with temperature; therefore, the microclimatic conditions of the studied ASs are associated with the morpho-agronomic characteristics of the native maize races. The results show that ASs could be a strategy for the conservation and use of native corn germplasm and could allow the diversification of sustainable production for rural farmers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

et al. 2022

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“…There is a dynamic interaction between the incidence of light and canopy trees throughout the seasons, conditioning plant growth and microclimatic conditions arranged in an agroforestry system (Schwerz et al, 2020). Tree lines planted in an east-west direction promoted self-shading with different intensities over the seasons (da Silva Neto et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Arabica coffee and cedar tree: integrating biotic and abiotic drivers

Pereira

Matsumoto

Oliveira

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

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Agroforestry systems are important forms of sustainable farming, providing several ecosystem services. However, characterization and management of factors such as thermal and light heterogeneity, as well as interactions between trees and coffee plants, are determinants for achieving the desired sustainability. This study aimed to verify whether different distances between Coffea arabica L. and Australian red cedar can change soil and microclimate characteristics and how they alter morphological and physiological attributes of coffee plants over the rainy season and a prolonged drought period (veranico) in Summer. The trial was carried out in the municipality of Barra do Choça, in an area with Australian red cedar trees (Toona ciliata M. Roem), distributed in two hedges, spaced 19.8 × 3 m apart, in a northeast-southwest direction, and coffee plants var. Catucaí Vermelho (3.3 × 0.5 m). Treatments were defined by the distance between the coffee plants and the first row of the Australian red cedar hedge (3.3 m, T1; 6.6 m, T2; 9.9 m, T3; 13.2 m, T4; 16.4 m, T5). Morphology and physiology of coffee plants, soil temperature, incident light on coffee plants, and the allelopathic potential of Australian red cedar leaf extracts were assessed in the wet and dry season of the 2016–2017 Summer. Temperatures fluctuated less in experimental units close to the hedge. The reduced growth of coffee plants close to the hedges was related to self-shading associated with light restriction by the trees. The experiment showed the allelopathic potential of Australian red cedar leaves.

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Assessing Yield, Growth and Climate Traits in Agroforestry Systems in Southern Brazil

Cited by 2 publications

References 45 publications

Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

Morpho-agronomic evaluation of native maize races associated with Mexican tropical climate agroforestry systems

Arabica coffee and cedar tree: integrating biotic and abiotic drivers

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