Energy Assessment of Forage Pea Production Under Influence of Organic and Synthetic Products

Abstract

Energy assessment based on a system of parameters (energy value, energy input, energy output, energy efficiency) in spring forage pea production under influence of organic products (bioinsecticides NeemAzal and Pyrethrum, foliar biofertiliser Biofa, growth regulator Polyversum) and synthetic products (insecticide Nurele D Chlorsyrine 550 EC and growth regulator Flordimex) was performed for three years period. The alone and combined treatment with organic and synthetic products was applied once (at stage of budding) and twice (at budding and flowering) for total of 24 variants. It was established that alone and combined application of organic products is characterized with lower energy consumption (8432.56 MJ ha -1) compared to cultivation with use of synthetic products (8533.81 MJ ha -1). In regard to amount of energy output trend are reverseraised values of gross energy, metabolizable energy and net energy under use of synthetic products. Balance between energy input and output determined as most effective combined treatment with organic products Biofa+Pyrethrum that led to increase of coefficient of energy efficiency (for metabolizable energy and net energy) on average by 22.4% to untreated control followed by combined treatment with synthetic products Flordimex+Nurele D (increase with 21.9%). For conditions of organic production could be recommended and combined use of organic products Polyversum+Pyrethrum and Polyversum+NeemAzal (excess of coefficient for metabolizable energy and net energy to control by 20.6 and 16.5%). Combined use of products as well as their double application as factors contributed to increase of energy efficiency in spring forage pea production.

Nutritive value responses to biological products in alfalfa forage (Medicago sativa L.)

“…Studies evaluating the energy and nutritional value of fodder crops treated with biopesticides have been insufficient (Georgieva et al, 2014;Nikolova et al, 2015 a,b). It is essential therefore to continue and expand research in that direction.…”