LEVEL AND VARIATION OF SEED YIELDS IN POLAND IN THE PERIOD 1959–1985

The purpose of the work is to recognize the level and variation of yields of vegetable seeds in Poland in the period 1959–1985. Half of the investigated species showed a growing trend of yields, with the biggest coefficients for three of them, i.e.: celery, cauliflower and onion (positive coefficient of trend b was from 3.89% to 1.95%). It has been noticed that, the biggest decrease of seed was in the case of leek (b = -6.02%). The scale of variation of seed yields of the examined species was very wide.
Leek, letttuce and cucumber belong to the group with the biggest variation coefficient (V_t from 83.3% to 59.5%). Radish and parsley (V_t ca. 22%) belong to the group with the lowest variation coefficient.

X International Symposium on Horticultural Economics

K. GÓRECKA

https://doi.org/10.17660/ActaHortic.1988.223.59