R. Pessala

Low nitrogen fertilization maintains the internal quality of swedes

S. Plaami, A. Evers, E. Ketoja, 1999 .

Decreased nitrogen rates and irrigation effect on celery yield and internal quality

S. Plaami, A. Evers, E. Ketoja, 1997, Plant foods for human nutrition.

YIELD AND QUALITY OF SELECTED HERB CULTIVARS IN FINLAND

M. Repčák, B. Galambosi, A. Aflatuni, 2002 .

Effects of fertilisation and irrigation practices on yield, maturity and storability of onions

T. Salo, T. Suojala, R. Pessala, 1998 .

Mulching in the cultivation of pickling cucumber

R. Pessala, K. Hårdh, 1977 .

EFFECT OF HARVEST TIME ON THE SENSORY QUALITY OF WHITE CABBAGE

T. Suojala, R. Pessala, 1999 .