Acúmulo de macronutrientes e decomposição da palhada de braquiárias em razão da adubação nitrogenada durante e após o consórcio com a cultura do milho

Costa, Nídia Raquel; Andreotti, Marcelo; Buzetti, Salatiér; Lopes, Keny Samejima Mascarenhas; Santos, Fernanda G.; Pariz, Cristiano Magalhães

doi:10.1590/s0100-06832014000400019

Cited by 28 publications

(24 citation statements)

References 27 publications

(30 reference statements)

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“…These results confirmed those of Torres et al (2005), Costa et al (2010), Pariz et al (2011a), and Costa et al (2014), demonstrating the ability of forage species of accumulating macronutrients, for biomass formation and nutrient cycling. Thus, the residues play a vital role in the consolidation and maintenance of NTS.…”

Section: Resultssupporting

confidence: 86%

“…Consequently, these areas are left fallow for a period of more than seven months a year (Dinar et al, 2008;Borghi et al, 2013). Moreover, plant residues decompose quickly in these regions (Pariz et al, 2011a;Costa et al, 2014). Summing up, all these conditions affect the sustainability of NTS.…”

Section: Introductionmentioning

confidence: 99%

“…Brachiaria) and Panicum, aside from producing large amounts of dry matter, which is critical for residue formation in NTS, also have high C/N and lignin/total N ratios, reducing the decomposition rate and protecting the soil against erosion and solar radiation action for a longer time (Pariz et al, 2011a;Costa et al, 2014). Maize also produces large amounts of dry matter and can increase residue production in intercrops with these forages, with positive effects on soil physical properties and the productivity of subsequent soybean (Chioderoli et al, 2010;.…”

Section: Introductionmentioning

confidence: 99%

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Autumn Maize Intercropped with Tropical Forages: Crop Residues, Nutrient Cycling, Subsequent Soybean and Soil Quality

Pereira

Mello

Pariz

et al. 2016

Rev. Bras. Ciênc. Solo

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Autumn maize intercropped with tropical forages can raise the amount of crop residues and improve nutrient cycling, favoring subsequent soybean crop. The objective of this study was to evaluate the effect of forms of implementation of intercropping of irrigated autumn maize with tropical forages on yield, decomposition, nutrient accumulation and release, and on the ratio of lignin/total N of forage residues, yield components, and grain yield of subsequent soybean, and on soil physical and chemical properties, under no-tillage in lowland Cerrado. The experiment was arranged in randomized blocks in a factorial (4 × 3 + 1) design with one control and four replications. The treatments consisted of four forages: Palisade grass, Congo grass, and two Guinea grass cultivars (Tanzânia and Áries); and three methods of sowing intercrops of forageautumn maize: forage sown simultaneously with maize in the sowing furrow, mixed with fertilizer; forage sown by broadcasting on the day of maize sowing; and forage seeds mixed with fertilizer broadcast on maize in growth stage V4; plus a control (maize monoculture). The decomposition and nutrient release rate of the forage residues were evaluated by the litter bag method, 30, 60, 90, and 120 days after desiccation. Sowing the forages in the furrow and by broadcasting raise the total amount of maize residues compared to method V4. Regardless of the forage type and sowing methods, intercropping increases the amount of residues compared to maize monoculture. The forages and sowing methods had no influence on nutrient accumulation in the residues at the time of desiccation and at the lowest lignin/total N ratio in Congo grass residues, and a logarithmic decay was observed. Forage and sowing methods did not influence the macronutrient release rate from crop residues for 120 days after desiccation; the release of N, P, K and Mg is logarithmic and the release of Ca and S exponential. Forage and sowing methods do not influence yield components and grain yield of subsequent soybean. However, intercropping increased grain yield of subsequent soybean compared to soybean after maize monoculture, and preserved the soil chemical and physical properties.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Autumn Maize Intercropped with Tropical Forages: Crop Residues, Nutrient Cycling, Subsequent Soybean and Soil Quality

Pereira

Mello

Pariz

et al. 2016

Rev. Bras. Ciênc. Solo

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“…Considering the upper soil layers, U. brizantha cultivar Piatã exhibited higher potassium content as compared to other cover species. The grass species have a greater capacity to accumulate dry matter and nutrients in the straw, with the exception of nitrogen which is greater for the leguminous plants (Costa et al, 2014;Pacheco et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Effect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region

Passos¹,

Aker²,

Costa³

et al. 2017

Afr. J. Agric. Res.

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No-tillage is an agricultural system that is proposed as a sustainable soil management system. This paper aims to evaluate the short-term effects of cover crops on a no-tillage system, by assessing a number of physical and chemical attributes of soil of the Brazilian Amazon region. The experiment was carried out in a typical Ferralsol under a no-tillage system from March to December, 2014. A randomized block design, with four replicates was used. The performance and effects of fourteen cover crops (Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, Crotalaria ochroleuca, Crotalaria spectabilis, Stizolobium aterrima, Stizolobium cinereum, Pennisetum glaucum, Sorghum bicolor, Sorghum sudanense, Urochloa brizanha cv. Xaraés, Urochloa brizantha cv. Piatã and Urochloa ruziziensis and Zea mays) and fallow (control treatment) on the soil quality were assessed. The cover crops were sown in the off season in April 2014, before the summer crop (maize). The levels of P, K, Ca 2+ , Mg 2+ , Al 3+ , H+Al, saturation by aluminum, sum of bases, organic matter, pH and resistance to soil penetration were evaluated following the end of the cover crops growth. Some near-surface soil attributes were affected by the cover crops. Urochloa species improved the levels of potassium in the soil at depths up to 5 cm below the surface. The highest penetration resistance was observed in the superficial layer between 12 and 16 cm deep, with penetration resistance values varying between 2472 and 2912 kPa. The Urochloa exhibited satisfactory agronomic performance when grown under a simulated crop livestock integration system. It is concluded that the use of cover crops in a no-till system has the potential to improve the chemical quality of soil in the Southwestern Amazon region.

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“…Xaraes and Urochloa ruziziensis in the Mato Grosso do Sul State, Costa et al (2014) found that between 90 and 120 days after handling, decomposition of the remaining biomass showed decreasing effect, and the temperature and rainfall favored the rapid decomposition of the straw on the soil surface in Brazilian savannah region. Similar results were obtained in this study for the two sowing dates.…”

Section: Production and Decomposition Of Biomassmentioning

confidence: 97%

Dynamics of biomass of pearl millet and Paiaguas palisadegrass in different forage systems and sowing periods in yield of soybean

Costa¹,

Costa²,

Assis³

et al. 2016

Afr. J. Agric. Res.

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There is increasing global concern with environmental food production and sustainability to maintain high carbon stocks in soil biomass. The biomass produced in crop-livestock integration system increases soil organic matter, acts in nutrient cycling, improves the physical, chemical and biological characteristics of soil and increases grain production. Moreover, this soil management system mitigates greenhouse effect and preserves the environment. However, in the Savannah of Central Brazil region, an efficient mulching production of biomass is one of the factors limit sustainability of direct seeding of soybean, mainly due to accelerated decomposition of crop residues. Thus, this study aimed to evaluate biomass dynamics of pearl millet and Paiaguas palisadegrass in different forage systems and sowing periods on soybean yield. The experiment followed a randomized block design with a 5 x 2 factorial arrangement and three replications, under five forage systems (monocropped pearl millet, monocropped Paiaguas palisadegrass, pearl millet intercropped in rows with Paiaguas palisadegrass, pearl millet intercropped between rows of Paiaguas palisadegrass and pearl millet oversown and intercropped with Paiaguas palisadegrass) at two sowing periods (February and March). The results showed that Paiaguas palisadegrass in a monocropped system generated the highest biomass production and lowest carbon/nitrogen ratio. The highest carbon/nitrogen ratio and cumulative biomass loss occurred with millet in monocropped and intercropped with oversown Paiaguas palisadegrass in which biomass production was reduced by plant competition. Paiaguas forage systems in palisadegrass monocropped and intercropping on and between rows supported higher yield of soybean. The second sowing periods resulted in higher production of remaining biomass and grain yield, in all forage systems. Intercropping in crop-livestock integration systems showed a promising cultivation technique to maintain a sustainable stock of soil carbon.

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Acúmulo de macronutrientes e decomposição da palhada de braquiárias em razão da adubação nitrogenada durante e após o consórcio com a cultura do milho

Cited by 28 publications

References 27 publications

Autumn Maize Intercropped with Tropical Forages: Crop Residues, Nutrient Cycling, Subsequent Soybean and Soil Quality

Autumn Maize Intercropped with Tropical Forages: Crop Residues, Nutrient Cycling, Subsequent Soybean and Soil Quality

Effect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region

Dynamics of biomass of pearl millet and Paiaguas palisadegrass in different forage systems and sowing periods in yield of soybean

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