Effects of Nitrogen, Phosphorus, Potassium, and Manure Factorially Applied to Potatoes in a Long-term Study
Year: 1973
Type: article
Abstract: The effects of N, P, K, and manure factorially applied to potato (Solanum tuberosum L.) yields, starch content, and soil and tissue nutrient levels were evaluated on continuous plots over 12 yr in a 4-yr potato, grain, hay, hay rotation. Although yield responses were observed with N, P, and K applications, manure application substantially increased yields above yield levels due to applied N, P, and K. Increasing rates of KCl strongly depressed tuber starch contents. Soil test P and K levels increased with repeated fertility applications, and leaf tissue levels were increased with N, P, and K treatments.
Source: Canadian Journal of Soil Science
DOI: 10.4141/cjss73-031
Authors: W. N. BLACK, R. P. WHITE
Institution: Agriculture and Agri-Food Canada
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2063764972