THE INFLUENCE OF ROW SPACING AND PLANT DENSITY IN ROWS ON THE YIELD OF CARROTS AND ROOT QUALITY

Between 1969 and 1975 field experiments on the effects of different plant density and spacing patterns of carrots on yield were carried out.
In small-scale field experiments (1969–1972) the following row spacings were compared: 10, 15, 22, 5, 30 and 45 cm, with 2, 3, 4 and 6 cm within the rows.
In addition, 30 and 45 cm row spacings were compared with twin rows or a band 8 cm wide.
The density of plants/m² ranged from 37 up to 500. Total and ware (roots 2 – 6 cm diam) yields of carrots increased as the distance between rows decreased from 45 to 10 cm and as the distance between plants in row was decreased from 6 to 2 cm.
A population of 111 or 222 plant/m², gave the highest and most uniform ware yield, and the highest yields of roots suitable for pre-packing (2 – 4 cm). Greening of the crowns was least when carrots were sown in bands 45 cm apart.

In large-scale field experiments (1970–1972) band sowing systems (30 and 45 cm apart) gave more uniform crops of carrots and a higher proportion of roots suitable for prepacking (2 – 4 cm), than a row system of culture (15, 30 and 45 cm apart). Several field trials conducted in 1973–1975 in different regions of Poland on commercial holdings confirmed these results.

Symposium on the Timing of Field vegetable Production

A. Kepka, L. Umiecka, H. Fajkowska

https://doi.org/10.17660/ActaHortic.1978.72.23