Organic cultivation of field pea by use of products with different action

Abstract

The possibilities for increasing the productivity and control of the pea weevil (Bruchus pisorum L.) in field pea (Pisum sativum L.) organic cultivation by the use of following bioproducts NeemAzal T/S and Pyrethrum FS-EC (insecticides), applied individually and in combination with Polyversum (growth regulator and fungicide) and Biofa (foliar fertilizer), as well as to evaluate the stability of the used mixtures were studied. Synthetic products Nurelle D and Flordimex 420 (alone and in combination) were used as a standard. The products were applied once (at budding stage) or twice (at budding and flowering stages). The results showed that forage pea productivity was influenced positively by the application of all organic products. The plants treated with the organic combinations formed an average yield of 3190.2 kg/ha, which was only 4.7% lower than that for the synthetic combination of Flordimex+Nurelle D. The highest yield was produced under application of two mixtures: Biofa+Pyrethrum and Polyversum+Pyrethrum at budding and flowering stages (22.0 and 21.8% above untreated control, respectively). These combinations were also distinguished for their most pronounced protective effect against the attack of the pea weevil and decrease in its numbers of 37.0 and 38.5%, respectively. Pyrethrum was distinguished for a lower degree of damaged seeds and a toxic effect against the pea weevil in comparison with NeemAzal. Technologically the most valuable variant, which united high stability, productivity and protection against pea weevil, was the combination of Biofa+Pyrethrum applied twice. Further investigations are indispensible to expand the range of products (bioinsectides, biofertilizers and growth regulators), which provides good insect control and high productivity in pea organic farming conditions. Additional key words: organic products; productivity; pea weevil control; stability.

Influence of Biofungicides Containing Microorganisms Such as Pythium oligandrum and Bacillus subtilis on Yield, Morphological Parameters, and Pathogen Suppression in Six Winter Pea Cultivars

“…We showed a significant increase in pea yield, on average by 0.5 t ha −1 , in the treatments with Polyversum WP. Our results are confirmed by experiments conducted by Georgieva et al [39], who showed that the application of the organic products Biofa, Polyversum, NeemAzal, and Pyrethrum positively influenced the productivity of forage peas. The highest yield was obtained following the application of Polyversum in combination with the bioinsecticide Pyrethrum at the budding and flowering stages.…”

Opportunities for growing of garden pea in organic production systems

“…The study of Georgieva et al (2015) showed that the use of organic products (Biofa + Pyrethrum) in field pea a, b… -Duncan's multiple range test (p < 0.05), nsnot significant For the other genotypes, higher yields were produced in the conventional production system. Performance (yield, yield stability and quality) is also linked to tolerance to abiotic and biotic stress, which is a complex of inherited traits with high genotype and environment interactions, resulting in the masking of the genotypic value of breeding lines.…”

“…Research has been conducted on optimal sowing rates (Baird et al, 2008), weed, disease and pest control (Annicchiarico, Filippi, 2008;Stanley, 2016;Georgieva, 2017), the use of organic fertilizers and stimulants in the conditions of organic production . The productivity of local and introduced cultivars and lines of peas in organic conditions (Gopinath et al, 2009;Chadha et al, 2013;Georgieva et al, 2015) was determined. Strategies, methods, technologies and protocols for organic testing and Production Guide for Organic Peas for Processing have been developed (Lammerts Van Bueren, Struik, 2004; Seaman, 2016).…”