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| Filter results3 paper(s) found. |
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1. Sus-Terra Enhanced Efficiency Phosphorus Fertilizer on Potato Grown in Calcareous SoilPotato (Solanum tuberosum L.) has a relatively high demand for phosphorus (P), especially on calcareous soil where the availability of P in hindered by poor solubility. Sus-Terra is claimed to be an enhanced efficiency fertilizer compared to other P sources. The objective of this trial was to evaluate the differences in uptake efficiency and yield for multiple P sources compared to a no P control applied to Russet Burbank potato. Field trials with six replications in a RCBD were... L.K. Sannar, B.G. Hopkins, T.J. Hopkins |
2. Soil Test Method Precision, Correlations, and Trends: SSSA-NAPT Historical DataThe Soil Science Society of America’s (SSSA) North American Proficiency Testing (NAPT) operates as a not-for-profit service laboratory resource since 1998 to assist/evaluate agricultural and environmental testing laboratories with quality assurance and quality control. Soil (n5 samples each quarter), plant (n3), and/or water (n3) samples collected nationwide are submitted quarterly to ~150 participating laboratories who choose which method(s) to use for which analytes they are interested... B. Hopkins, S.V. Nelson, G. Cardon, J. Lawley, T.J. Hopkins |
3. Plant Test Method Precision, Correlations, and Trends: SSSA-NAPT Historical DataThe Soil Science Society of America’s (SSSA) North American Proficiency Testing (NAPT) operates as a not-for-profit service laboratory resource since 1998 to assist/evaluate agricultural and environmental testing laboratories with quality assurance and quality control. Soil (n = 5 samples each quarter), plant (n = 3), and/or water (n = 3) samples collected nationwide are submitted quarterly to ~150 participating laboratories who choose which method(s) to use for which analytes they... S.V. Nelson, J. Lawley, T.J. Hopkins, G. Cardon, B. Hopkins |