Adubação nitrogenada no consórcio de milho com duas espécies de braquiária em sistema plantio direto

Costa, Nídia Raquel; Andreotti, Marcelo; Gameiro, Roberta de Aquino; Pariz, Cristiano Magalhães; Buzetti, Salatiér; Lopes, Keny Samejima Mascarenhas

doi:10.1590/s0100-204x2012000800003

Cited by 75 publications

(103 citation statements)

References 21 publications

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“…The dry matter production observed in this experiment was below the 4,000 kg ha -1 of dry matter reported by Costa et al (2012), for Urochloa ruziziensis and maize intercropping. However, Batista et al (2011) reported Urochloa ruziziensis dry matter of about 1,000 kg ha -1 , at the maize physiological maturity, for regions of the São Paulo State.…”

Section: Resultscontrasting

confidence: 78%

Maize intercropped with Urochloa ruziziensis under no-tillage system

Queiroz

Chioderoli

Furlani

et al. 2016

Pesqui. Agropecu. Trop.

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The no-tillage system is a conservation practice that seeks greater sustainability of the production system and can be replicated in large land areas. Maize intercropped with forages of the Urochloa genus has proven to be profitable and suitable for targeting both the straw and grain production. This study aimed at evaluating maize yield and cover plants, using different maize row spacings and forage seeding methods, under a no-tillage system. A randomized blocks design, in a 2 x 3 + 2 factorial scheme, with four replications, was used. The treatments consisted of two maize row spacings (0.45 m and 0.90 m) intercropped with Urochloa ruziziensis, using three different methods (Urochloa sown in the row, Urochloa sown by hauling soon after maize was sown and Urochloa sown during the maize V4 growth stage) + controls (only maize at two spacings). The intercropping between maize spaced 0.90 m with Urochloa ruziziensis in the sowing row provided better grain yield results without interfering with the Urochloa dry matter production.

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Section: Resultscontrasting

confidence: 78%

Maize intercropped with Urochloa ruziziensis under no-tillage system

Queiroz

Chioderoli

Furlani

et al. 2016

Pesqui. Agropecu. Trop.

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“…In some current production systems, with the adoption of more modern hybrids, irrigation, and NTS, the recommended nitrogen level in topdressing is much higher. In a study conducted by Costa et al (2012a) nitrogen fertilization in topdressing was evaluated in corn intercropped with tropical forages of the same region and under very similar conditions to those seen in this study; 200 kg N ha -1 resulted in the highest crop production level.…”

Section: Resultsmentioning

confidence: 65%

“…The corn crop is highly dependent on the use of fertilizers to ensure high yields, which and nitrogen (N) is the most required nutrient (COSTA et al, 2012a). However, in corn production systems, the need for fertilizers is known as one of the factors that increases the production costs (COSTA et al, 2012b); in addition, its misuse can cause environmental harm.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Thus, it is necessary to adopt appropriate crop management methods, including the use of additional nutrient sources, especially nitrogen in topdressing, to ensure favorable conditions for proper plant development (COSTA et al, 2012a). Increased production and productivity of corn resulting from the addition of nitrogen have been described in several studies (GAVA et al, 2010;MELO et al, 2011;COSTA et al, 2012a). Corn needs ample nitrogen, especially in no-tillage systems (NTS) (COSTA et al, 2012a), because this element is part of the chlorophyll molecule and is key in crucial proteins, enzymes, and nucleic acids, which are essential for growth and high grain yield (GROSS et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Inoculation of Diazotrophic Bacteria and Nitrogen Fertilization in Topdressing in Irrigated Corn

et al. 2016

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-Corn is a nitrogen-intensive crop, and the use of management practices such as inoculation of the seed with diazotrophic bacteria, which can maximize crop productivity and reduce the need of nitrogen fertilizers, may result in lower production costs. The present study aimed to evaluate the effect of inoculation of corn seed with Azospirillum brasilense and controlled addition of nitrogen to topdressing on the nutrition, production components, and productivity of crop grain. The experimental design was a randomized block design, with four replications in a 2 × 5 factorial scheme. The treatments consisted of inoculation or not of corn seed with A. brasilense (at 100 mL per 25 kg of seed) and five nitrogen (N) levels in topdressing (0, 30, 60, 90, and 120 kg N ha -1 from urea [45% N]) were applied when the corn was in the phenological growth stage V6. Foliar macronutrients, foliar chlorophyll index (FCI), production components, and yield of corn grain were valuated. Inoculation of corn seeds with A. brasilense increased plant height and grain yield. Fertilization in topdressing, with N levels up to 120 kg ha -1 , linearly increased the foliar nutrients and productivity of corn cultivated in the spring/summer in the low-altitude Cerrado region of Brazil.Keywords: Azospirillum brasilense. Zea mays. nitrogen. no-tillage system. INOCULAÇÃO DE BACTÉRIA DIAZOTRÓFICA E ADUBAÇÃO NITROGENADA DECOBERTURA EM MILHO IRRIGADO RESUMO -O milho é uma cultura exigente em nitrogênio e a utilização de práticas de manejo como a inoculação das sementes com bactérias diazotróficas, poderão maximizar a produtividade da cultura, atrelados a redução do uso de adubos nitrogenados, podendo refletir em menor custo de produção. O presente trabalho objetivou avaliar o efeito da inoculação de sementes de milho com Azospirillum brasilense e adição controlada de nitrogênio em cobertura sobre a nutrição, componentes da produção e produtividade de grãos da cultura. O delineamento experimental foi o de blocos casualizados, com quatro repetições, em esquema fatorial 2 x 5. Os tratamentos foram constituídos pela inoculação ou não das sementes do milho com A. brasilense (dose de 100 mL para 25 kg de sementes) e cinco doses de nitrogênio (N) em cobertura (0, 30, 60, 90 e 120 kg N ha -1 fonte ureia [45% N]) foram aplicadas quando o milho estava no estádio fenológico V6. Teores de macronutrientes foliares, o índice de clorofila foliar (FCI), os componentes da produção e a produtividade de grãos do milho foram avaliados. Constatou-se que a inoculação das sementes de milho com A. brasilense incrementou a altura de plantas e a produtividade de grãos. A adubação em cobertura, com a dose de até 120 kg N ha -1 , aumentou linearmente os teores nutricionais foliares e a produtividade de grãos do milho irrigado cultivado na primavera/ verão na região de Cerrado de baixa altitude do Brasil.Palavras-chave: Azospirillum brasilense. Zea mays. nitrogênio. sistema plantio direto.

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Maize yield under Urochloa ruziziensis intercropping and previous crop nitrogen fertilization

et al. 2021

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Maize intercropping with forage crops and N under no-tillage management have led to discrepant results regarding the impact on crop yield. Therefore, understanding various production systems is necessary to assist producers in decision making.The aim of this experiment was to evaluate whether maize (Zea mays L.) intercropping with Urochloa ruziziensis (R. Germ. and C.M. Evrard) Crins promotes differences in the agronomic performance of maize and if split top-dressing N fertilization in the previous crop (common bean [Phaseolus vulgaris L.]) promotes increase in maize agronomic performance. The experiment was conducted during two agricultural years in southeastern Brazil, with treatments arranged as a split-plot fitted in a randomized block design, with four replications. Main plot was cropping systems (two systems -maize sole and maize intercropped with U. ruziziensis) while subplots comprised 10 combinations of split top-dressed N applications, totaling 90 kg ha −1 , applied to the previously cultivated common bean crop. Regardless of the agricultural year, intercropping with U. ruziziensis sown simultaneously with maize reduced maize yield by 12% on average. Intercropping maize and U. ruziziensis increased soil coverage from an average of 64-100% over maize as an only crop. The agronomic performance of maize grown in sole crop or intercropped with U. ruziziensis was not influenced by the effect of top-dressing N fertilization applied in common bean under no-tillage as previous crop. Intercropping maize with U. ruziziensis is a viable option for producers seeking improved soil coverage or grazing opportunities, however, caution is needed since maize yields may be reduced.

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Adubação nitrogenada no consórcio de milho com duas espécies de braquiária em sistema plantio direto

Cited by 75 publications

References 21 publications

Maize intercropped with Urochloa ruziziensis under no-tillage system

Maize intercropped with Urochloa ruziziensis under no-tillage system

Inoculation of Diazotrophic Bacteria and Nitrogen Fertilization in Topdressing in Irrigated Corn

Maize yield under Urochloa ruziziensis intercropping and previous crop nitrogen fertilization

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