Effect of N fertilizer rate and soil pH on N efficiency in corn

Goodroad, L. L.; Jellum, M. D.

doi:10.1007/bf02371198

Cited by 18 publications

(8 citation statements)

References 18 publications

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“…O aumento do pH do solo altera a disponibilidade de nutrientes, causando aumentos na absorção de N (Goodroad & Jellum, 1988), P, K, Ca e Mg (Lutz Jr. et al, 1972) pelo milho. São vários os trabalhos que demonstram aumentos consideráveis na produção de milho com a aplicação de calcário incorporado ao solo em sistema de preparo convencional (Gonzales-Erico et al, 1979;Camargo et al, 1982;Raij et al, 1983;Ernani et al, 1998).…”

Section: Introductionunclassified

Alterações químicas do solo e resposta do milho à calagem e aplicação de gesso

Caires

Kusman²,

Barth³

et al. 2004

Rev. Bras. Ciênc. Solo

103

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A calagem e a aplicação de gesso levam a modificações químicas no solo que podem influenciar o crescimento radicular e a produção de culturas anuais. Com o objetivo de avaliar as alterações químicas do solo e a resposta do milho ao calcário e gesso aplicados no sistema plantio direto, foi realizado um experimento em um Latossolo Vermelho distrófico textura argilosa, em Ponta Grossa (PR). Os tratamentos, dispostos em blocos completos ao acaso em parcelas subdivididas com três repetições, constaram da aplicação de calcário dolomítico (sem calcário e 4,5 t ha -1 de calcário na superfície, em dose total e 1/3 da dose por ano, durante três anos, e incorporado), nas parcelas, e doses de gesso (0, 3, 6 e 9 t ha -1 ), nas subparcelas. Os tratamentos com calcário foram aplicados em julho e as doses de gesso em outubro de 1998. A cultura do milho foi avaliada no ano agrícola de 2001/02. A correção da acidez pela calagem na superfície, com ou sem parcelamento, foi mais acentuada na camada superficial do solo (0-0,05 m) e houve maior reação nas profundidades de 0,05-0,10 e 0,10-0,20 m, quando o calcário foi incorporado. O gesso melhorou o subsolo, aumentando os teores de Ca e S-SO 4 2-, aumentou a concentração de N, K e Ca no tecido foliar do milho e causou redução do Mg no solo e nas folhas. O crescimento radicular do milho não foi influenciado pelos tratamentos de calcário e gesso. A calagem na superfície, com ou sem parcelamento, ou com incorporação e a aplicação de gesso aumentaram a produção de milho, em decorrência do aumento da saturação por Ca nas camadas superficiais do solo. A aplicação de gesso agrícola, associada à calagem, foi uma estratégia eficiente para maximizar a produção de milho.Termos de indexação: Zea mays L., acidez, subsolo, crescimento radicular, cálcio, nutrição mineral.

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Section: Introductionunclassified

Alterações químicas do solo e resposta do milho à calagem e aplicação de gesso

Caires

Kusman²,

Barth³

et al. 2004

Rev. Bras. Ciênc. Solo

103

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“…From the report of Nitrogen Management Guide [29], approximately this amount of N was required from the N flux of field corn graph. Different types, hybrids of corn might have slightly different requirements of N, and even different NUE [72], but this will not alter our results, as the crop is the same for all models. This is also the optimum N fertilizer rate in a contemporary study with drip fertigation system and corn field [73].…”

Section: Discussionmentioning

confidence: 88%

Modeling irrigation with nitrate contaminated groundwater

Hatipoğlu¹,

Kurt²

2020

Pamukkale J Eng Sci

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An alternative method to treat the nitrate-contaminated groundwater under the agricultural fields while providing economic benefit is called pump and fertilize. Pump and fertilize, while removing the nitrate in the groundwater, can reduce nitrate and pesticide requirement. However, up to date, there are no studies evaluating the effect of this application under different soil/climate conditions. In order to apply this technology in the field and to determine its effect, a feasibility study needs to be performed. Therefore, we constructed unsaturated zone groundwater models via HYDRUS 1D for one-hectare corn field in prevalent soils and under Eskişehir, Adana, Şanlıurfa, Düzce climates in Turkey. Our results indicated that even groundwater with 50 mg/L nitrate contamination could provide economic benefit to the agriculture especially where climates and soil types are similar to Şanlıurfa. In this climate using pump and fertilize technique saves 97 kg N/year in a 1-hectare farm. The technique was especially effective for fluvisol, vertisol soils as nitrate leaching are very low, and for cambisol soils since very high nitrogen use efficiency was seen for the climates present in Turkey. Our results indicated that in general the pump and treat efficiency is less effective in wet and cold climates, like in Düzce. As a general result of our study, we concluded that dry and warm climates with relatively permeable soils are more promising for the pump and fertilize application.

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“…The dry seeds were weighed and ground for Kjeldahl and ~SN analysis. Differences between treatments for % ~SN were expected to be more easily detected in the seeds than in whole plants because 90% of nitrogen is concentrated in the seeds of nodulating soybean (Smith et al, 1988), 82% of N is concentrated in seeds of nonnodulating soybean (Talbott et al, 1985) and 70% of N is concentrated in seeds of maize (Goodroad and Jellum, 1988). The ground seeds also tended to be more homogeneous than ground whole plants (especially mature maize).…”

Section: The 1988 ~Sn Dilution Experimentsmentioning

confidence: 98%

Nitrogen transfer from nodulating soybean to maize or to nonnodulating soybean in intercrops: the 15N dilution method

1991

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(Zea mays L.) was monocropped or intercropped with nodulating or nonnodulating soybean (Glycine max [L.] Merr.). In addition, nodulating soybean and nonnodulating soybean were each monocropped and grown as a mixture. In 1985 and 1986, treatments were grown at 0 and 60 kg N ha-x and in 1988, the treatments were grown without N fertilizer, on N-depeted soil and on non-N-depleted soil. ~SN enriched N was applied to soil in all the aforementioned treatments to test for N transfer from nodulating soybean to non-N2-fixing crops by the ~SN dilution method.The ~SN dilution method did not show the occurrence of N transfer in 1985 and 1986, but the N sparing effect was evident from the total N uptake of nonnodulating soybean, dwarf maize and tall maize, in 1986. In 1988, maize and nonnodulating soybean seed yields and seed N yields were higher on non-N-depleted soil than on N-depleted soil. On N-depleted soil, the ~SN dilution method indicated N transfer from nodulating soybean to maize and to nonndulating soybean. At a population ratio of 67% nodulating soybean to 33% nonnodulating soybean, N transfer was also seen on non-N-depleted soil in 1988.

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Effect of N fertilizer rate and soil pH on N efficiency in corn

Cited by 18 publications

References 18 publications

Alterações químicas do solo e resposta do milho à calagem e aplicação de gesso

Alterações químicas do solo e resposta do milho à calagem e aplicação de gesso

Modeling irrigation with nitrate contaminated groundwater

Nitrogen transfer from nodulating soybean to maize or to nonnodulating soybean in intercrops: the 15N dilution method

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