Zobrazeno 1 - 3
of 3
pro vyhledávání: '"P. A. I. Ehlert"'
Autor:
J. Recknagel, P. B. Barraclough, Giorgio Provolo, Georges Hofman, Gitte H. Rubæk, Keith Goulding, L. Jordan-Meille, V. Genot, P. A. I. Ehlert
Publikováno v:
Soil Use and Management. 28:419-435
The procedure for applying phosphorus (P) fertilizer to soil can be divided into three consecutive steps: (i) Measurement of soil-P availability, (ii) calibration of the soil-P fertility level and (iii) estimation of the recommended P dose. Informati
Publikováno v:
Soil Use and Management. 26:399-411
The Netherlands has a high cumulative mean phosphorus (P) balance. In the 20th century, cumulative mean P surpluses were ca. 4500 kg P2O5/ha. The annual surpluses have levelled off because of manure application limits from 1984 onwards. We report the
Publikováno v:
Plant and Soil, 75, 361-378
Plant and Soil 75 (1983)
Plant and Soil 75 (1983)
Four experiments are described in which the uptake patterns of various crop species were shown to enhance the solubilization of alkaline rock phosphates. In most cases, such enhancements resulted from soil acidification brought about by the alkaline