The effect of summer catch crops on yielding and chosen elements of nutritious value of onion and red beet
Romualda Jabłońska-Ceglarek, Jolanta Franczuk, Anna Zaniewicz-Bajkowska, Robert Rosa
Department of Vegetable Crops
Prusa 14, 08-110 Siedlce, Poland
The subsequent effect of green manures as summer catch crops (tancy phacelia, rye, hairy vetch, and horse
bean) ploughed as whole plants and/or post harvest residues, and manuring
with 4 and 6 t ha-1 of rye straw on the yielding and reducing sugar, total sugar,
and vitamin C content in onion and red beet was studied. The value of the catch crops as a green manure was
compared with 60 t ha-1 of dung. Onion was grown in
the second and red beet in the third year after green manure application.
Plots were fertilized with 400 and 600 kg ha-1 of NPK (2:2:3).
The growing of vegetables on plots fertilized with green manures did not
reduce the yields and amount of the studied components in comparison with
unfertilized plots and those fertilized with dung. Fertilization with
whole plants as a green manure increased the content of total sugars in
onion and total and reducing sugars in red beet. Straw fertilization in a
dose of 4 t ha-1 increased the yields of onion and red beet.
The growing of onion in the second year after fertilization with straw
considerably increased the content of vitamin C in onion in comparison
with plots unfertilized with straw. Mineral fertilization increased
vitamin C content in red beet. Application of 600 kg NPK ha-1
on plots fertilized with rye as a green manure increased the total sugar
content in onion and reduced it in red beet.
Jabłońska-Ceglarek R., Franczuk J., Zaniewicz-Bajkowska A., Rosa R., 2002. The effect of
summer catch crops on yielding and chosen elements of nutritious value of
onion and red beet. Folia Horticulturae 14/2: 11-23.