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Investigation of the Magnesium Content and Productivity of Wheat Genotypes Under Organic and Conventional Inorganic Fertilizer Application

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Summary

Randomized complete block design (RCBD) experiment at Qassim University (Saudi Arabia) comparing magnesium content and grain productivity in seven spring wheat genotypes (YR, Local, Sids 12, P3, P5, IC8, IC17) under organic versus conventional inorganic fertilization, across two growing seasons, with three replications. Conventional fertilization produced higher grain magnesium concentrations on average. Genotype IC17 showed the highest magnesium content in grains and minimal variation between fertilization methods.

Key numbers

  • Mean grain Mg, conventional fertilization: 2.12 g/kg (2,120 mg/kg) (p. 1 abstract)
  • Mean grain Mg, organic fertilization: 1.54 g/kg (1,540 mg/kg) (p. 1 abstract)
  • Conventional produced higher Mg than organic overall (p. 1 abstract)
  • Genotype IC17: highest Mg content in grains and minimal variation between conventional and organic (p. 1 abstract)
  • Genotype P5: superior grain yield overall (p. 1 abstract)
  • Sids 12: highest shoot dry weight (4.79 g) under conventional fertilization (p. 1 abstract)
  • Wheat tissue concentration for adequate growth: 1.5 to 3.5 g/kg in vegetative tissues (p. 2 literature review)
  • A magnesium tissue concentration of 1.5 mg/g dry matter did not adversely affect growth in referenced earlier work (p. 2 literature review)

Evidence Fitness

Reconstructable dataset. RCBD with three replications; single-site experiment in Saudi Arabia; two growing seasons. Findings are specific to dryland wheat in a semi-arid environment and may not generalize to wheat grown in temperate or humid conditions. Conventional vs. organic comparison is confounded by differences in total nutrient availability, not magnesium supplementation alone.

Methods (brief)

Randomized complete block design, 7 genotypes x 2 fertilization treatments x 3 replications x 2 seasons. Grain magnesium measured by methods not specified in abstract (inferred ICP-OES or AAS from context). Statistical analysis by RCBD ANOVA with means comparison.

Implications

  • Courses: illustrates that fertilization method (conventional vs. organic) affects grain magnesium concentration in wheat; relevant to supply-chain discussions about how agronomic practices influence mineral content in staple grains.
  • App: no contamination_profile implication; magnesium is a nutritional analyte here, not a hazard analyte.
  • Microbiome: no direct connection.

Provenance notes

Open access (PMC OA subset). Retrieved from PMC Open Access (pmc-oa-opendata S3). SHA256 verified against MANIFEST.csv.

Update history

No substantive edit history is available in this build. The full commit record is available in git.

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