Estimating nutrient uptake requirements for soybean using QUEFTS model in China

PloS One
Fuqiang YangAdrian M Johnston

Abstract

Estimating balanced nutrient requirements for soybean (Glycine max [L.] Merr) in China is essential for identifying optimal fertilizer application regimes to increase soybean yield and nutrient use efficiency. We collected datasets from field experiments in major soybean planting regions of China between 2001 and 2015 to assess the relationship between soybean seed yield and nutrient uptake, and to estimate nitrogen (N), phosphorus (P), and potassium (K) requirements for a target yield of soybean using the quantitative evaluation of the fertility of tropical soils (QUEFTS) model. The QUEFTS model predicted a linear-parabolic-plateau curve for the balanced nutrient uptake with a target yield increased from 3.0 to 6.0 t ha-1 and the linear part was continuing until the yield reached about 60-70% of the potential yield. To produce 1000 kg seed of soybean in China, 55.4 kg N, 7.9 kg P, and 20.1 kg K (N:P:K = 7:1:2.5) were required in the above-ground parts, and the corresponding internal efficiencies (IE, kg seed yield per kg nutrient uptake) were 18.1, 126.6, and 49.8 kg seed per kg N, P, and K, respectively. The QUEFTS model also simulated that a balanced N, P, and K removal by seed which were 48.3, 5.9, and 12.2 kg per 1000 kg s...Continue Reading

References

Jun 23, 2009·Science·P M VitousekF S Zhang

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Citations

Mar 14, 2020·Molecular Genetics and Genomics : MGG·Li WangDeyue Yu
Mar 5, 2019·Metabolomics : Official Journal of the Metabolomic Society·Saleh AlseekhFernando Carrari
Jul 9, 2021·Frontiers in Plant Science·Michel Esper NetoMarcelo Augusto Batista

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Software Mentioned

Nutrient Expert ( NE )
QUEFTS
SAS

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