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Tomato (Solanum Lycopersicum L.) is an important and popular vegetable grown worldwide. Biofertilisers import nutritional substances in plants and has a direct role in the supply with macro- and micro elements, which take part in the biological processes and have a very important role in the improvement of soil fertility. The experiment aims at studying the influence of the biofertiliser Seasol on the vegetative manifestations and the economic productivity of tomatoes of the variety of Trapezitsa. The study took place in 2013 and 2014 at the Agroecological Centre at Agricultural University - Plovdiv. It was established that the standard yield of tomatoes was the highest for the variant characterized with the application of the biofertiliser Seasol (triple)- 2683 kg/da (2013) and 2591 kg/da (2014). The reported results showed the stimulating effect of the vegetation soil feeding with the biofertiliser Seasol, regardless of the number of uses (double and triple), as compared to the results of the unfertilised control. [ABSTRACT FROM AUTHOR]

This experiment aims at researching the impact of the biofertiliser Hemozim Bio N5 on the productive characteristics of pepper of the variety of Kurtovska Kapiya 1619 and the “soil respiration” during vegetation. The experiment was carried out in the years of 2013 and 2014 at the Agroecological Center at the Agricultural University- Plovdiv, in conformity with the principles of the organic agriculture. The obtained results show that the triple feeding during vegetation with the biofertiliser Hemozim Bio N5 impacts the development of the pepper plants and on the standard yield probably due to the high content of organic nitrogen in the biofertiliser. It was established that the “soil respiration” was more intensive on the 14th day, reaching its peak on the 28th day, thus probably showing that for the past period there was activation of the microbial activity in the soil under the influence of the nutritional substances introduced through the biofertiliser Hemozim Bio N5, on the one hand, and due to the impact of the agrotechnical activities and the agrometeorological conditions, on the other hand, thus increasing the soil biological activity. [ABSTRACT FROM AUTHOR]

The biological system (agroecosystem) is considered to be a living organism having mutually connected components in dynamic interrelations. In Bulgaria there have been many Lumbrical farms established, which have been producing large quantities of biofertiliser obtained a s a r esult o f f eeding C alifornia r ed w orms w ith o rganic r emainders u ntil t heir complete transformation into warm excrements. This study aims at researching the impact of the biofertiliser Lumbrical on the yield upon organic production of pepper of the variety of Sofiiska Kapiya. The experiment was carried out in the vegetation years of 2010 and 2011 at the Agroecological Center at the Agricultural University- Plovdiv, on the territory of an organic farm certified by “Balkan Biocert” LTD. The highest standard yield was reported for the variant characterized with additional vegetative soil feeding with Lumbrical on the basic fertilisation Lumbrical - 1883 kg/da (2010); 1872 kg/da (2011). The results show the stimulating effect of the basic fertilisation with the biofertiliser Lumbrical and additional (soil and leaf) vegetation feeding with the biofertiliser Lumbrical on the economic productivity of pepper. [ABSTRACT FROM AUTHOR]

The objective of this research was to examine the influence of selected biofertilisers on the production capacity of pepper of the variety of „Sofiiska kapiya” cultivated under the conditions of organic agriculture. This experiment was carried out from 2010 until 2011 on the experimental field of the Agroecological Centre at the Agricultural University ‐ Plovdiv on the alluvial‐meadow soil. The study included biofertilisers ‐ Boneprot, Lumbrical, Baikal EM‐1Y and Seasol, which belong to the list of permitted biofertilisers in accordance with the EU Regulation (EC) No. 889/2008. Under the impact of the applied additional fertilisation with liquid biofertilisers, the highest yield was reported for the variant fed with the biofertiliser Baikal EM‐1Y on the basic fertilisation Lumbrical ‐ 2036 kg/da, and 1893 kg/da (2011). The combined application of the biofertilisers on the basic fertilisation had a stimulating effect on the pepper yield. [ABSTRACT FROM AUTHOR]

The objective of this study was to examine the influence of biofertilisers on the vegetative growth, yield and productivity of tomatoes cultivated under the conditions of organic farming. The research was carried out in the polyethylene greenhouse and experimental field of the Agroecological centre at the Agricultural University ‐ Plovdiv (Bulgaria), in the period from 2013 until 2014 with on determinant tomatoes (Solanum lycopersicum L.,) of the variety of “Trapezitsa”. The standard yield had its highest value upon the application of biofertiliser Emosan on the basic fertilization Boneprot ‐ 3140 kg/da (2013) and 3116 kg/da (2014), thus determining the positive impact of the tested combination of biofertilisers. The combined application of biofertilisers in the form of basic fertilisation and additional vegetation feeding had a positive impact on the formation of the standard yield, the number and the mass of fruits. [ABSTRACT FROM AUTHOR]