Utilização do nitrogênio (15N) residual de coberturas de solo e da uréia pela cultura do milho

Silva, Edson Cabral da; Muraoka, Takashi; Buzetti, Salatiér; Guimarães, Guilherme; Veloso, M. E. da C.

doi:10.1590/s0100-06832006000600006

Cited by 8 publications

(13 citation statements)

References 26 publications

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“…Thus, of the total N applied to palisadegrass in the previous year, which continued growing throughout the autumn-winter period and was cut to form straw for NTS corn seeding, great part was recovered by the developing forage (FUE 82.3 and 70.6 % of N in SS and STD, respectively) ( Table 2. Interaction split between intercrop sowing times × N rates ( 15 NH 4 NO 3 source) applied after corn harvest for forage dry matter production (FDMP), amount of fertilizer-derived nitrogen in the plant (FDNFP) and fertilizer use efficiency (FUE) of palisadegrass, in two evaluation periods (160 and 198 days after fertilization -DAF) and total that remained in the straw and/or soil were available to be absorbed by the corn plants sown in succession, which corroborates the data of Silva et al (2006a). Considering each intercrop sowing time, regardless of the rate of N applied, and the total forage and whole corn plant (grain + plant), the FUE was 87.1 and 74.2 % in SS and STD, respectively (Tables 1 and 3).…”

Section: Residual Effect Of Nitrogen On Corn After Palisadegrasssupporting

confidence: 81%

“…Therefore, early-established palisadegrass is able to develop more quickly and the first grazing can be scheduled earlier. Similar results, reporting an increase in plant N accumulation as N fertilization increases, were obtained by Scivittaro et al (2000), Silva et al (2006a) and Lara-Cabezas (2011). According to these authors, this stimulates the root development, resulting in a better use of water and soil nutrients by the plant.…”

Section: Evaluation Of Palisadegrasssupporting

confidence: 77%

“…However, the overall FUE values were far below the estimated potential (Table 3). This was been observed by Silva et al (2006a) andFernandes (2006) who detected less than 3 % of residual N when fertilizer was applied in the previous crop year.…”

Section: Residual Effect Of Nitrogen On Corn After Palisadegrassmentioning

confidence: 54%

“…The quality and amount of plant residues and the availability of mineral N in the soil solution directly influence nitrogen recovery from these residues by corn (Ceretta et al, 2002;Lara Cabezas et al, 2004;Ernani et al, 2005). Thus, Aita et al (2006) and Silva et al (2006a) stated the possibility of reducing the amount of mineral N applied to corn when grown after cover crops.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen fertilization (15NH4NO3) of palisadegrass and residual effect on subsequent no-tillage corn

Borghi

Crusciol

Nascente

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYNitrogen is required in large amounts by plants and their dinamics in corn and perennial forages intercropped is little known. This study analyzed the efficiency of nitrogen fertilization ( 15 NH 4 NO 3 ) applied after corn grain harvest to palisadegrass (Brachiaria brizantha cv. Marandu) in intercrops sown at two times, as well as the N residual effect on the subsequent corn crop. The field experiment was performed in Botucatu, São Paulo State, in southeastern Brazil, on a structured Alfisol under no-tillage. The experiment was arranged in a randomized block design in a split plot scheme with four replications. The main plots consisted of two intercropping systems (corn and palisadegrass sown together and palisadegrass sown later, at corn top-dressing fertilization). The subplots consisted of four N rates (0, 30, 60, and 120 kg ha -1 N). The subplots contained microplots, in which enriched ammonium nitrate ( 15 NH 4 NO 3 ) was applied at the same rates. The time of intercrop sowing affected forage dry matter production, the amount of fertilizer-derived N in and the N use efficiency by the forage plants. Nitrogen applied in autumn to palisadegrass intercropped with corn, planted either at corn sowing or at N top-dressing fertilization, increased the forage yield up to a rate of 60 kg ha -1 .( 1458The amount of fertilizer-derived N by the forage plants and the fertilizer use efficiency by palisadegrass were highest 160 days after fertilization for both intercrop sowing times, regardless of N rates. Residual N did not affect the N nutrition of corn plants grown in succession to palisadegrass, but increased grain yield at rates of 60 and 120 kg ha -1 N, when corn was grown on palisadegrass straw from the intercrop installed at corn fertilization (top-dressing). Our results indicated that the earlier intercropping allowed higher forage dry matter production. On the other hand, the later intercrop allowed a higher corn grain yield in succession to N-fertilized palisadegrass.Index terms: Zea mays, Brachiaria brizantha, crop system, sustainability.RESUMO: ADUBAÇÃO NITROGENADA ( 15 NH 4 NO 3 ) NO CAPIM-MARANDU E EFEITO RESIDUAL NO MILHO, EM SISTEMA PLANTIO DIRETO O nitrogênio é requerido em grandes quantidades pelas plantas e sua dinâmica no consórcio entre milho e forrageiras tropicais perenes é pouco conhecida. Objetivou-se avaliar a eficiência de utilização da adubação nitrogenada ( 15 NH 4 NO 3 ) no capim-marandu (Brachiaria brizantha cv. Marandu), proveniente de duas épocas de consórcios com o milho, realizadas após a colheita da cultura granífera, bem como o efeito residual no milho cultivado em sucessão. O experimento foi conduzido na Faculdade de Ciências Agronômicas da UNESP em Botucatu, SP, em Nitossolo Vermelho sob sistema plantio direto. O delineamento experimental foi em blocos casualizados em parcelas subdivididas. As parcelas foram constituídas pelas épocas de consórcio: milho e capim-marandu semeados simultaneamente; e capim-marandu semeado na adubação de cobertura do milho. As subparcelas foram c...

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Section: Residual Effect Of Nitrogen On Corn After Palisadegrasssupporting

confidence: 81%

Section: Evaluation Of Palisadegrasssupporting

confidence: 77%

Section: Residual Effect Of Nitrogen On Corn After Palisadegrassmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

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Nitrogen fertilization (15NH4NO3) of palisadegrass and residual effect on subsequent no-tillage corn

Borghi

Crusciol

Nascente

et al. 2014

Rev. Bras. Ciênc. Solo

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“…Results of several studies show that the utilization of N from green manure by subsequent crops rarely exceeds 20% [43,50,12,51] and most of the N remains in the soil, incorporated in the organic matter fraction. In the present study the application of AS along with SH increased N utilization by sugarcane plants.…”

Section: Sampling Datesmentioning

confidence: 99%

Crop Rotation Biomass and Effects on Sugarcane Yield in Brazil

Ambrosano¹,

Cantarella²,

Schammas³

et al. 2013

Biomass Now - Cultivation and Utilization

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Maize-Brachiaria intercropping: A strategy to supply recycled N to maize and reduce soil N2O emissions?

Canisares

Rosolem

Momesso

et al. 2021

Agriculture, Ecosystems & Environment

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Nitrogen use in agriculture directly impacts food security, global warming, and environmental degradation. Forage grasses intercropped with maize produce feed for animals and or mulch for no-till systems. Forage grasses may exude nitrification inhibitors. It was hypothesized that brachiaria intercropping increases N recycling and maize grain yield and reduces nitrous oxide (N 2 O) emissions from soil under maize cropping. A field experiment was set up in December 2016 to test three cropping system (maize monocropped, maize intercropped with Brachiaria brizantha or with B. humidicola ) and two N rates (0 or 150 kg ha -1 ). The grasses were sown with maize, but B. humidicola did not germinate well in the first year. B. brizantha developed slowly during the maize cycle because of shading but expanded after maize was harvested. The experiment was repeated in 2017/2018 when B. humidicola was replanted. N 2 O and carbon dioxide (CO 2 ) emissions, maize grain yield and N content were measured during the two seasons. After the first maize harvest, the above- and below-ground biomass, C and N content of B. brizantha grown during fall-winter, and the biological nitrification inhibition potential of B. brizantha were evaluated. Maize yield responded to N fertilization (5.1 vs. 9.8 t ha -1 ) but not to brachiaria intercropping. B. brizantha recycled approximately 140 kg N ha -1 and left 12 t dry matter ha -1 for the second maize crop. However, the 2017/18 maize yields were not affected by the N recycled by B. brizantha , whereas N 2 O emissions were higher in the plots with brachiaria, suggesting that part of the recycled N was released too early after desiccation. Brachiarias showed no evidence of causing nitrification inhibition. The strategy of intercropping brachiarias did not increase maize yield, although it added C and recycled N in the system.

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Utilização do nitrogênio (15N) residual de coberturas de solo e da uréia pela cultura do milho

Cited by 8 publications

References 26 publications

Nitrogen fertilization (15NH4NO3) of palisadegrass and residual effect on subsequent no-tillage corn

Nitrogen fertilization (15NH4NO3) of palisadegrass and residual effect on subsequent no-tillage corn

Crop Rotation Biomass and Effects on Sugarcane Yield in Brazil

Maize-Brachiaria intercropping: A strategy to supply recycled N to maize and reduce soil N2O emissions?

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