Growth and solar radiation use efficiency of corn cultivated in agroforestry systems

Nardini, Claiton; Sgarbossa, Jaqueline; Schwerz, Felipe; Elli, Elvis Felipe; Medeiros, Sandro Luís Petter; Caron, Braulio Otomar

doi:10.9755/ejfa.2019.v31.i7.1977

Cited by 9 publications

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“…In addition to planting density, tree species influence the growth of maize hybrids. In this sense, Nardini et al [ 23 ] measured a higher relative growth rate in maize under Eucalyptus than under Peltophorum dubium .…”

Section: Discussionmentioning

confidence: 99%

“…mays studied in this work, research related to AS intercropped with annual crops such as Glycine max L. Merr. and Zea mays L. [ 46 ], Triticum aestivum L. [ 19 , 22 ], Zea mays L. [ 20 , 23 ] and Sacharum officinarum [ 21 ] reported morpho-agronomic and physiological differences in these crops and attributed such important differences to planting density, tree canopy, tree species, tree age, biology (perennial or deciduous), microclimatic conditions, tolerance of shade genotypes, species plasticity and crop management.…”

Section: Discussionmentioning

confidence: 99%

“…Bertomeu [ 20 ] found that in maize hybrids, grain yield was less related to monoculture-grown trees because shading affects this variable. Nardini et al [ 23 ] reported that the growth of hybrid maize plants (e.g., the leaf index area and net growth rate) was affected by tree shading, but when plants were cultivated under AS conditions, they showed a higher efficiency with respect to solar radiation than when they were grown in monocultures.…”

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: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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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“…Specifically, these plants suffered a greater restriction of solar radiation, which led to them becoming more efficient at utilizing the available radiation. According to Nardini et al (2019), this radiation restriction during plant growth can be compensated for by diffuse radiation penetrating the shading mesh and the plant canopy.…”

Section: Growth Characteristics Of C Citrodrora Under Different Shadi...mentioning

confidence: 99%

Effects of Artificial Shading and Plant Density on Corymbia Citriodora Seedling Characteristics

Nardini¹

2022

Floresta Ambient.

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The objective of this work was to evaluate the influence of colored shade mesh and plant density on the morphological characteristics of Corymbia citriodora seedlings. The highest radiation efficiency was found in the blue mesh, 7.01 g MJ -1 and 5.72 g MJ -1 for average and high density respectively. For dry matter and leaf area index at high density, the treatment without mesh followed by the red mesh was the best. The chlorophyll index did not differ between treatments, with mean values of 206.4, 59.1 and 262.0 for chlorophyll a, b and total, respectively. Using principal component analysis, we found the total variance to be 70%. The use of colored shade mesh and plant density altered the radiation use efficiency and dry matter accumulation. Leaf area index was affected only by plant density. The red mesh resulted in the most similar values to the treatment without mesh.

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“…Juntamente com essa rápida disseminação, os eucaliptos foram também considerados ameaças à biodiversidade de plantas e animais por reduzirem o crescimento de plantas no sub-bosque e comunidades adjacentes, em função da secreção de compostos alelos químicos e diminuir a presença de animais por sua estrutura e perda de habitat (BARGALI e BARGALI, 2000;BARLOW et al, 2007;BASANTA et al, 1989;BUGHIO et al, 2013;HOBBS et al, 2003;MARTELLO et al, 2018;PROENÇA et al, 2010). Assim, uma série de culturas têm sido testadas sob diversos espaçamentos e arranjos em sistemas agroflorestais com eucalipto, e como esperado os resultados variam amplamente (BORGES et al, 2017(BORGES et al, , 2021CECCON, 2005;JUNIOR et al, 2018;MACEDO et al, 2006;NARDINI et al, 2019;NIERI et al, 2021;PRASAD et al, 2010) As médias de intensidade luminosa mensal para cada um dos tratamentos foram feitas considerando apenas as medições realizadas entre os horários de nascer e pôr do sol.…”

Section: Agrofloresta Um Caminho Para a Restauração De Ambientes Degr...unclassified

O manejo do ambiente luminoso em sistemas agroflorestais de usos múltiplos

Santos¹

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The management of the light ambient in multipurpose agroforestry systemsConsidering the great diversity of native tree species and the modest advances of silviculture on these when in productive systems, this study aimed to verify the responses of different native species to the variation of the light environment. For this, the eucalyptus stands were thinned systematically and progressively, providing gradual differences in the canopy cover. The experiment with four non-randomized blocks consisted of five treatments with different levels of forest density, T100 -100% of eucalyptus, T75 -75% of eucalyptus, T50 -50% of eucalyptus, T33 -33% of eucalyptus and T0 -without eucalyptus/full sun, and three sub-treatments, S1 -Pioneer (PIO), S2 -Non-pioneer (NPIO) and S3 -Mixed planting (MIX). For the eucalyptus crop, the average annual increment and the basal area were characterized as results of the differential thinning in each treatment. The T33 treatment, due to the reduction in competition, provided the highest diametric gains, 2.2 cm/year/tree, but presented the lowest basal area given the lower forest density. The monitoring of the eucalyptus canopy was performed using hemispherical photographs. Higher intensities of thinning provided larger spaces for the canopy growth, resulting in more significant gains in the canopy coverage index. With light sensors arranged under different conditions of vegetation cover, the light conditions present in the understory of each treatment were measured. The available light in the treatments ranged from 41.01-to 91.50% of the maximum possible luminosity at the beginning of the experiment and from 35.35% to 83.41% at the end of the observations. The forty species of Brazilian native trees (20 pioneer species and 20 nonpioneer species) implanted in the system, which were submitted to different radiation conditions, were evaluated in a census for mortality, height growth, increase in diameter at root collar, and observation of responses plastic. For mortality, a continuum of responses was observed, with trends of higher mortality in the opposite extreme conditions of radiation found in treatments T0 (full sun) and T100 (more shaded environment). The group of pioneer species showed the highest plasticity for growth in height; the response known as "shadow avoidance syndrome" was driven by treatments T75 and T50. The highest diametric gains for all sub-treatments (PIO, NPIO, MIX) were provided by full sun conditions (T0). The species Schinus terebinthifolius (Aroeira pimenteira) and Peltophorum dubium (Canafístula) were individually analyzed. Due to their different uses and economic potential, which are optimized by different light conditions, it is recommended that S. terebinthifolius be cultivated in full sun and P. dubium in the shade (approximately 45% of available solar radiation).

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Growth and solar radiation use efficiency of corn cultivated in agroforestry systems

Cited by 9 publications

References 0 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

Effects of Artificial Shading and Plant Density on Corymbia Citriodora Seedling Characteristics

O manejo do ambiente luminoso em sistemas agroflorestais de usos múltiplos

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