Grain productivity, yield stability and nutritive value of field pea (Pisum sativum l.) under organic farming conditions (Pleven, Bulgaria)
December 15, 2025
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| Article Title: | Grain productivity, yield stability and nutritive value of field pea (Pisum sativum l.) under organic farming conditions (Pleven, Bulgaria) |
| Authors: | Georgieva N., Butnariu M., Delchev G. |
| Affiliation: | Institute of Forage Crops, Pleven, 5800, Agricultural Academy, Bulgaria University of Life Sciences “King Mihai I”, Timisoara, 300645, Romania Trakia University, Stara Zagora, 6000, Bulgaria |
| Abstract: | The introduction of organic, alternative crops such as Pisum sativum can be seen as a contribution to the development of more sustainable agricultural practices worldwide. The present research aimed to study the grain productivity, stability and nutritional value of Pisum sativum under the use (alone and combined) of organic products (foliar nanofertilizers /Lithovit, Nagro/ and insecticides /Madex, Agricol/). The controls were two: 1) untreated control and 2) variants with conventional cultivation using synthetic preparations (foliar fertilizer Kristalon and insecticide Proteus 110 OD). A randomized block design with three replications was used. The results showed that the treatment with organic products increased the grain yield (by 7.8 to 32.8%) and the protein content (by 1.7 to 10.5%), and decreased the crude fiber content (by 14.7 to 49.1%) compared to the untreated control. The combination of Lithovit+Madex was distinguished by significantly higher productivity compared to a synthetic combination (fertilizer Kristalon+ insecticide Proteus OD 110). The treatment with Agricoll and its combinations (Nagro+Agricoll, Lithovit+Agricoll) had a particularly favorable effect on the seed biochemical composition. The mixed use of organic products resulted in very well-expressed manifestations of subadditive type of synergism. The complex evaluation in terms of stability parameters (criterion of stability YSi, stability variance σi2 and ecovalence Wi) determined Nagro + Madex and Lithovite + Madex as stable combinations. |
| Keywords: | organic products, field pea, grain productivity, stability, nutritive value. |
| *Correspondence: | Natalia Georgieva, Institute of Forage Crops, Pleven, 5800, Agricultural Academy, Bulgaria, email: imnatalia@abv.bg |
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