Evaluation of water and ammonium acetate tests as indices for available P in limed soils

by Helinä Hartikainen
Published 1989-01-01

Relationship between phosphorus intensity and capacity parameters in Finnish mineral soils: I Interpretation and application of phosphorus sorption-desorption isotherms

by Helinä Hartikainen
Published 1982-09-01

Base-neutralizing capacity of Finnish mineral soils

by Helinä Hartikainen
Published 1986-04-01

Effect of cumulative fertilizer dressings on the phosphorus status of mineral soils I Changes in inorganic phosphorus fractions

by Helinä Hartikainen
Published 1989-03-01

Leaching of plant nutrients from cultivated soils: II Leaching of anions

by Helinä Hartikainen
Published 1978-05-01

Leaching of plant nutrients from cultivated soils: I Leaching of cations

by Helinä Hartikainen
Published 1978-05-01

Quality of the ryegrass and lettuce yields as affected by selenium fertilization

by Helinä Hartikainen, Päivi Ekholm, Vieno Piironen, Tailin Xue, Terhi Koivu, Markku Yli-Halla
Published 1997-12-01

Uptake of soil P, Al, Fe, Mn, Mg and Ca by Italian rye grass (Lolium multiflorum Lam.) induced by synthetic chelating agent

by Helinä Hartikainen
Published 1981-05-01

Acid-neutralizing capacity of Finnish mineral soils

by Helinä Hartikainen
Published 1985-12-01

Watersoluble phosphorus in Finnish mineral soils and its dependence on soil properties

by Helinä Hartikainen
Published 1982-04-01

Effect of cumulative fertilizer dressings on the phosphorus status of mineral soils II Comparison of two phosphorus testing methods

by Helinä Hartikainen
Published 1989-03-01

Chloride and sulphate solutions as extractants for soil P: III Effect of increasing sulphate concentration on P desorption 

by Helinä Hartikainen, Markku Yli-Halla
Published 1983-07-01

Effect of decreasing acidity on the extractability of inorganic soil phosphorus

by Helinä Hartikainen
Published 1981-01-01

Relationship between phosphorus intensity and capacity parameters in Finnish mineral soils: II Sorption-desorption isotherms and their relation to soil characteristics

by Helinä Hartikainen
Published 1982-09-01

Chloride and sulphate solutions as extractants for soil P: II Dependence of the relative extraction power of chloride and sulphate solutions on some soil properties 

by Helinä Hartikainen, Markku Yli-Halla
Published 1982-09-01

Dynamics of dry matter and selenium accumulation in oilseed rape (Brassica napus L.) in response to organic and inorganic selenium treatments

by Nashmin Ebrahimi, Helinä Hartikainen, Asko Simojoki, Roghieh Hajiboland, Mervi M Seppänen
Published 2015-06-01

Effect of liming on phosphorus in two soils of different organic matter content: II Changes in the availability of phosphorus to turnip rape (Brassica campestris) 

by Helinä Hartikainen
Published 1983-07-01

Peat ash and basic slag as substitutes for lime with reference to phosphorus uptake by turnip rape

by Helinä Hartikainen
Published 1984-12-01

Effect of liming on phosphorus in two soils of different organic matter content: I Changes of native and applied phosphorus in incubation experiment 

by Helinä Hartikainen
Published 1983-07-01

Soil response to acid input in a titration experiment

by Helinä Hartikainen
Published 1992-12-01