Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil

Faria, Italo Kaye Pinho de; Vieira, José Luís Vilela; Tenelli, Sarah; Almeida, Rodrigo Estevam Munhoz de; Campos, L. J. M.; Costa, R. V. da; Zavaschi, Eduardo; Almeida, Risely Ferraz de; Carneiro, Leandro de Mello e Silva; Otto, Rafael

doi:10.1590/1678-992x-2017-0295

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…2). These PCs together accounted for 89% of the total variance and conformed to the criteria of at least 70%, as demonstrated in the study of Faria et al (2019).…”

Section: Temporal Dynamicssupporting

confidence: 68%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

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Purpose Due to the pressures of conforming to environmental quality standards and the increased costs of mineral fertilizer importation, there is growing interest in the use of organic residues as fertilizers. To test the hypothesis that indicates the quantity of animal manure (AM) depends on the phosphorus (P) needs of the crops, an experiment was run using three organic animal manures (chicken-CM, turkey-TM, and cow manure-CoM), enriched with limestone, gypsum, and phosphorus. Methods A greenhouse experiment was run using AM incorporated in a clayey soil, at a rate that equates to the P needs of Brachiaria sp. Contents of phosphorus, potassium (K + ), calcium (Ca +2 ), magnesium (Mg +2 ), sodium (Na + ), organic matter (OM), and values of pH and cation exchange capacity (CEC) were monitored during 120 days. Plants were collected to determine the dry matter.

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“…2). These PCs together accounted for 89% of the total variance and conformed to the criteria of at least 70%, as demonstrated in the study of Faria et al (2019).…”

Section: Temporal Dynamicssupporting

confidence: 68%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

Self Cite

View full text Add to dashboard Cite

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“…Positive effect of soil N inputs with application of crop residues also is showed in literature 30,31 , as well the positive effect of N mineral fertilizer [32][33][34] . In our study, the application of crop residues increased 87% of total N in soil, while N mineral fertilize increased 61% of total N in soil, and association of crop residue and N mineral fertilizer contributed in 90%.…”

Section: Discussionmentioning

confidence: 65%

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

Almeida¹,

Silva²,

Wendling³

2020

Nitrogen

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In no-tillage systems, there is an accumulation of crop residues (CR), which plays an essential role in the availability of soil-N. A study was set up to provide information regarding the N credit and the influence of N mineral fertilizer. There was the addition of a similar rate of residue (10 Mg ha−1; sugarcane, soybean, and brachiaria) and N mineral fertilizer (urea; 120 kg N ha−1) in loam soil. After the stabilization of biological activity (73 days), soil and remaining residues were collected, and C and N monitored. The results showed that the N credit was positive with the application of soybean, sugarcane, and brachiaria. There was a positive balance of the soybean N credit in soil with a reduction from 2.49 to 0.90 g kg−1 of N in remaining residue, and a direct increase of 90% of soil-N. There is no need of N fertilizer to potentialize the soybean N credit, but it is required to potentialize N credit of brachiaria and sugarcane. The urea demonstrated to be an excellent enhancer of brachiaria N credit, but it was not adequate for sugarcane residues. Based on our result, the accumulation and incorporation of CR can be considered as N credit with a positive contribution in soil-N.

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“…Positive effect of soil N inputs with application of crop residues also is showed in literature 30,31 , as well the positive effect of N mineral fertilizer [32][33][34] . In our study, the application of crop residues increased 87% of total N in soil, while N mineral fertilize increased 61% of total N in soil, and result from reduction of N in remaining residue in -68% and -56%, respectively when applied residue isolated or associated with N mineral fertilizer.…”

Section: Discussionmentioning

confidence: 73%

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

Almeida¹,

Silva²,

Wendling³

2020

Preprint

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In no-tillage systems, there is an accumulation of crop residues (CR) which plays an important role in available of soil-N. A study was set up to provide information regarding the CR N credit, and the influence of N mineral fertilizer. An incubation was run in a loam soil with addition of a similar rate of residue (10 Mg ha-1; sugarcane, soybean, and brachiaria) and N mineral fertilizer (urea; 120 kg N ha-1). After the stabilization of biological activity, soil and remaining residues were collected, and N monitored. Results showed that the N credit was positive with application of soybean, sugarcane, and brachiaria. There was an expressive performance of soybean N credit represented by a positive balance, and a reduction from 2.49 to 0.9 g kg-1 of N in residue, with direct increase of 90% of soil-N. There is no need of N fertilizer to potentialize the soybean N credit, but it is requested to potentialize N credit of brachiaria and sugarcane. The urea demonstrated be a good enhancer of brachiaria N credit, but it was not adequate to sugarcane residues. Based in our result, the accumulation and incorporation of CR can be considered as a N credit with positive contribution in soil-N.

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Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil

Cited by 10 publications

References 24 publications

Enriched animal manure as a source of phosphorus in sustainable agriculture

Enriched animal manure as a source of phosphorus in sustainable agriculture

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

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