Open AccessSoil sampling depth impact on phosphorus yield response prediction in winter wheat
Author(s) -
Reed Vaughn,
Finch Bronc,
Souza Joao,
Watkins Patrick,
Arnall Brian
Publication year - 2022
Publication title -
agricultural and environmental letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.681
H-Index - 12
ISSN - 2471-9625
DOI - 10.1002/ael2.20067
Subject(s) - environmental science , nutrient , phosphorus , fertilizer , agronomy , sampling (signal processing) , soil nutrients , yield (engineering) , soil test , soil water , soil science , hydrology (agriculture) , geology , chemistry , ecology , biology , materials science , organic chemistry , filter (signal processing) , computer science , metallurgy , computer vision , geotechnical engineering
Nutrient stratification of no‐till managed soil can affect soil test analysis levels of plant‐available phosphorus (P). Research has suggested sampling to different depths due to soil acidity, but little work has been conducted to investigate any change to sampling recommendations for immobile nutrients. The objective of this study was to determine the soil sampling depth that had the greatest relationship with yield response to fertilizer‐P. The depths sampled in this study were 0–5, 0–10, 0–15, 10–30, 5–10, 5–15, 10–15, and 15–30 cm. The results indicated that the top 15 cm of a soil profile had the greatest amount of Mehlich 3 extractable P (M3P) available and that the 5‐to‐10 and 5‐to‐15‐cm depths had the highest correlation with relative yield. Soil depths outside of the proposed root zone of winter wheat ( Triticum aestivum L.) (15–30 cm) had the lowest correlation with yield response.