Nitrogen fertilization impact on agronomic traits of maize hybrids released at different decades

Sangoi, Luís; Ender, Márcio; Guidolin, Altamir Frederico; Almeida, Milton Luiz de; Konflanz, Valmor Antônio

doi:10.1590/s0100-204x2001000500005

Cited by 29 publications

(33 citation statements)

References 21 publications

(24 reference statements)

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“…(2009) reported that the amount of N taken up varied with hybrids and was higher in high responsive hybrids. Sangoi et al (2001) similarly reported that older hybrids took up more N and presented higher values of shoot dry matter at flowering. Kamoni et al (2000) had also found that N is taken up by maize throughout the growing season with maximum uptake 10 days before tasselling to 25 to 30 days after tasselling.…”

Section: Mineral N At the Different Stages Of Maize Growthmentioning

confidence: 80%

Mineral Nitrogen and Microbial Biomass Dynamics under Different Acid Soil Management Practices for Maize Production

Onwonga¹,

Lelei²,

Mochoge³

2010

JAS

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Field and laboratory incubation studies were conducted to determine the effect of different acid soil management practices; liming (L), combined N and P fertilizers (NP), and goat manure (M) application, for maize production on the dynamics of mineral N, microbial biomass nitrogen (MBN) and microbial biomass carbon (MBC). A randomised complete block design with a 2 3 factorial arrangement replicated thrice was used. The factors, each at two levels, were: NP fertilizers applied as triple superphosphate (0 and 75 kg ha -1 ), and urea (0 and 50 kg ha -1 ), L (0 and 2.5 t ha -1 ) and M (0 and 5 t ha -1 ) giving a total of eight treatments; L, M, NP, LM, LNP, MNP, LMNP and C (control). Soil samples for determination of mineral N, MBC and MBN were collected from the 0-15 and 15-30 cm depths at seedling, tasselling, and maturity stages of maize growth and after 0, 15, 30, 60, 120 and 240 days of laboratory incubation of soils obtained from the same field.The NP treatment had significantly (P< 0.5) higher levels of mineral N in both depths at all stages of maize growth, followed by MNP and LMNP. The net mineralized N (μgN/g dry soil) for the incubated soil followed the order LMNP, MNP, LM, M, L, LNP, C and NP for the two depths. The MNP, LMNP and M treatments had significantly higher MBC and MBN for both field and incubated soils. The correlations between mineral N and MBN were positive but non-significant at seedling and maturity stages of maize growth in the 0-15 cm depth and at seedling and tasselling stages in the 15-30 cm depth. The correlations between MBN and Mineral N for both depths and sampling periods were positive and significant for the incubated soils, The maize grain yield increases (%) above control were 43, 36.4, 31.1, 25.3, 21.9, 13.7 and 3.0 for LMNP, MNP, NP, M, LNP, LM and L treatments, respectively.Application of LMNP and MNP treatments enhanced mineral N, MBC and MBN and concomitantly soil quality and productivity as gauged from the improved maize yields in the respective treatments. Combining manure, lime and chemical fertilizers and /or manure and chemical fertilizers is thus a promising alternative to developing a more sustainable acid soil management strategy for increased maize production in Molo district, Kenya.

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Section: Mineral N At the Different Stages Of Maize Growthmentioning

confidence: 80%

Mineral Nitrogen and Microbial Biomass Dynamics under Different Acid Soil Management Practices for Maize Production

Onwonga¹,

Lelei²,

Mochoge³

2010

JAS

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“…The crop takes up between 20 and 25 kg of soil N per ton of grain (Muzilli & Oliveira, 1992;Sangoi et al, 2001a). Nitrogen is the most unstable nutrient in the soil and is affected by several reactions such as volatilization, leaching, denitrification and immobilization.…”

Section: Introductionmentioning

confidence: 99%

Maize response to nitrogen fertilization timing in two tillage systems in a soil with high organic matter content

Sangoi

Ernani

Silva

2007

Rev. Bras. Ciênc. Solo

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SUMMARYNo-tillage systems, associated to black oat as preceding cover crop, have been increasingly adopted. This has motivated anticipated maize nitrogen fertilization, transferring it from the side-dress system at the stage when plants have five to six expanded leaves to when the preceding cover crop is eliminated or to maize sowing. This study was conducted to evaluate the effects of soil tillage system and timing of N fertilization on maize grain yield and agronomic efficiency of N applied to a soil with high organic matter content. A three-year field experiment was conducted in Lages, state of Santa Catarina, from 1999 onwards. Treatments were set up in a split plot arrangement. Two soil tillage systems were tested in the main plots: conventional tillage (CT) and no-tillage (NT). Six N management systems were assessed in the split-plots: S1 -control, without N application; S2 -all N (100 kg ha -1 ) applied at oat desiccation; S3 -all N applied at maize sowing; S4 -all N side-dressed when maize had five expanded leaves (V5 growth stage); S5 -1/3 of N rate applied at maize sowing and 2/3 at V5; S6 -2/3 of nitrogen rate applied at maize sowing and 1/3 at V5. Maize response to the time and form of splitting N was not affected by the soil tillage system. Grain yield ranged from 6.0 to 11.8 t ha - O aumento na adoção do sistema de semeadura direta, associado à freqüente utilização da aveia-preta como cobertura de inverno, tem estimulado a antecipação da fertilização nitrogenada para a cultura do milho. Esta tem sido transferida da cobertura, feita quando a planta tem cinco a seis folhas expandidas, para o período de dessecação da cobertura de inverno ou da semeadura do milho. Este trabalho foi conduzido objetivando avaliar os efeitos de dois sistemas de preparo de solo e da época de aplicação de N sobre o rendimento de grãos do milho e a eficiência agronômica do N aplicado num solo com alto teor de matéria orgânica. Instalou-se um experimento num Nitossolo Vermelho, com 54 g kg -1 de matéria orgânica, em Lages-SC, durante as estações de crescimento de 1999/2000, 2000/ 2001 e 2001/2002. Os tratamentos foram dispostos no delineamento experimental de parcelas sub-divididas. Dois sistemas de preparo de solo foram avaliados na parcela principal: convencional e semeadura direta. Seis sistemas de manejo da adubação nitrogenada foram avaliados nas subparcelas: S1 -testemunha sem N; S2-todo o N (100 kg ha -1 ) aplicado na dessecação da aveia; S3 -todo o N aplicado na semeadura do milho; S4 -todo o N aplicado quando o milho tinha cinco folhas expandidas (estádio V5); S5 -um terço do N aplicado na semeadura do milho e dois terços no estádio V5; S6 -dois terços do N aplicados na semeadura e um terço em V5. A resposta do milho à época e ao tipo de fracionamento da adubação nitrogenada não foi afetada pelo sistema de preparo do solo. O rendimento de grãos variou de 6,0 a 11,8 t ha -1 . A antecipação da fertilização nitrogenada (S2 e S3) diminuiu o rendimento de grãos em duas das três safras. Na estação de crescimento com a p...

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“…A higher application rate of organo-mineral fertiliser could have resulted in the availability of more nutrients for the growth and development of maize cultivars. Sangoi et al, (2001) posited that increased availability of nitrogen to maize plants would aid their photosynthetic capacity. Improved availability of nitrogen could also have been implicated in the early flowering observed at increased application rate of organo-mineral fertiliser.…”

Section: Discussionmentioning

confidence: 99%

Performance of maize (<i>Zea mays</i>) cultivars as influenced by grade and application rate of Organo-mineral fertiliser in a transitory rain forest

Aderibigbe¹,

Sakariyawo²,

Kasali³

2017

Agrosearch

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Nitrogen fertilization impact on agronomic traits of maize hybrids released at different decades

Cited by 29 publications

References 21 publications

Mineral Nitrogen and Microbial Biomass Dynamics under Different Acid Soil Management Practices for Maize Production

Mineral Nitrogen and Microbial Biomass Dynamics under Different Acid Soil Management Practices for Maize Production

Maize response to nitrogen fertilization timing in two tillage systems in a soil with high organic matter content

Performance of maize (<i>Zea mays</i>) cultivars as influenced by grade and application rate of Organo-mineral fertiliser in a transitory rain forest

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