Humic acid and nitrogen dose application in corn crop under alkaline soil conditions

Azeem, Kamran; Naz, Farah; Jalal, Arshad; Galindo, Fernando Shintate; Teixeira, Marcelo C. M.; Khalil, Farhan

doi:10.1590/1807-1929/agriambi.v25n10p657-663

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…It was also observed that the application of urea and UAN had a more beneficial influence on the mentioned maize traits than ammonium nitrate. Similar conclusions were drawn by Azeem et al [53]. In their experiment, the combined application of nitrogen (N) (as urea) and humic acid (HA) considerably improved the physiology of maize and maize yield parameters.…”

Section: Discussionsupporting

confidence: 82%

Use of Organic Materials to Limit the Potential Negative Effect of Nitrogen on Maize in Different Soils

2022

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This study was launched to test organic materials in the form of humic acids (HA) applied to soil to improve the effect of nitrogen on maize, and to determine an optimal dose of HA, which will be ecologically safe and will counteract potential negative (phytotoxic) influences of excessive nitrogen fertiliser doses, on two soils with different textural composition. The maize plants grown on the loamy sand were characterised by a higher value of the SPAD leaf greenness index, yields, and a lower content of total-N and sulphate sulphur in maize. Urea, and especially UAN, promoted higher SPAD leaf greenness index values during the stem elongation stage and particularly during the tassel emergence stage. The effect of urea on maize yields was positive on both soils, but UAN had a positive effect on this parameter only on the loamy sand. HA tended to increase the SPAD leaf greenness index. The impact of HA on plant height and yields (especially medium dose) was generally positive. However, a negative effect of the interaction of HA with UAN on the plant height and maize yield on the sand was observed. HA caused an increase in the total-N content, and their highest dose also decreased the sulphate sulphur content in maize. The application of HA to soil has a positive influence on the growth and development of plants and can create positive effects by mitigating adverse consequences of intensive agricultural production in the natural environment.

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Section: Discussionsupporting

confidence: 82%

Use of Organic Materials to Limit the Potential Negative Effect of Nitrogen on Maize in Different Soils

2022

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Maize Grain Yield and Quality Improvement Through Biostimulant Application: a Systematic Review

Ocwa,

Mohammed,

Mousavi

et al. 2024

J Soil Sci Plant Nutr

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Increasing the productivity of cereals such as maize while protecting the environment remains a fundamental impetus of healthy food production systems. The use of biostimulants is one of the sustainable strategies to achieve this balance, although the ability of biostimulants to enhance maize productivity varies. Moreover, research on the efficacy of biostimulants is ubiquitous with limited comprehensive global analysis. In this context, this systematic review evaluated the sole and interactive effects of biostimulants on the yield and quality of maize grain from a global perspective. Changes in yield (t ha-1), protein content (%), starch content (%) and oil content (%) of maize grain were assessed. Results revealed that sole and combined application of biostimulants significantly improved grain yield. Irrespective of the region, the highest and the lowest grain yields ranged between 16-20 t ha-1 and 1-5 t ha-1, respectively. In sole application, the promising biostimulants were chicken feather (16.5 t ha-1), and endophyte Colletotrichum tofieldiae (14.5 t ha-1). Sewage sludge × NPK (15.4 t ha-1), humic acid × control release urea (12.4 t ha-1), Azospirillum brasilense or Bradyrhizobium japonicum × maize hybrids (11.6 t ha-1), and Rhizophagus intraradices × earthworms (10.0 t ha-1) had higher yield for the interactive effects. The effects of biostimulants on grain quality were minimal, and all attributes improved in the range from 0.1 to 3.7%. Overall, biostimulants had a distinct improvement effect on yield, rather than on the quality of grain. As one way of maximising maize productivity, soil health, and the overall functioning of crop agroecosystems, the integrated application of synergistic microbial and non-microbial biostimulants could provide a viable option. However, the ability to produce consistent yield and quality of grain improvement remains a major concern.

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Estimating maize harvest index and nitrogen concentrations in grain and residue using globally available data

Ludemann

Hijbeek

Loon

et al. 2022

Field Crops Research

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Humic acid and nitrogen dose application in corn crop under alkaline soil conditions

Cited by 4 publications

References 26 publications

Use of Organic Materials to Limit the Potential Negative Effect of Nitrogen on Maize in Different Soils

Use of Organic Materials to Limit the Potential Negative Effect of Nitrogen on Maize in Different Soils

Maize Grain Yield and Quality Improvement Through Biostimulant Application: a Systematic Review

Estimating maize harvest index and nitrogen concentrations in grain and residue using globally available data

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