Folia Horticulturae

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Fertilizing effects of catch crops in onion cultivation

Romualda Jabłońska-Ceglarek, Wanda Wadas

Department of Vegetable Crops
Podlasie University
Prusa 14, 08-110 Siedlce, Poland

The post-effect of green manure catch crops (phacelia, rye, winter vetch, and horse bean) on onion yields was investigated. Two forms of catch crop use were applied - the whole plant biomass and after-harvest residue. The fertilizing effect of catch crops was compared with the farmyard manure rate 25 t ha-1 and cultivation without manuring. Onion was cultivated in the second year after ploughing-in of catch crops.

By using green manure it was possible to obtain high onion yields on light soil. The catch crops from winter vetch and rye were more efficient green manure in onion cultivation than that from phacelia and horse bean. The yield effect of phacelia and horse bean in the second year after ploughing in was similar to, and of winter vetch and rye higher than that of the farmyard manure rate of 25 t ha-1. The productive effect of winter vetch and rye was marked by a rise in the onion yield in relation to the non-manured field, being 3-times higher on average than that using farmyard manure. The effect of whole plant biomass manure was similar to that of post-harvest residue catch crops alone.

Jabłońska-Ceglarek R., Wadas W., 2001. Fertilizing effects of catch crops in onion cultivation. Folia Horticulturae 13/1: 3-11.