Drought And Soil Microflora In Different Apple Growing Technologies
V. Tasseva, An. Zdravkova
Abstract: The investigation was carried out during 2007 at the Institute of Agriculture – Kyustendil, Bulgaria with apple cultivar Florina grafted on clonal rootstock MM 106 and planted at 4,5x2,5 m in 1996. The experiment included following growing thechnologies: Standard (conventional), Integrated, Resource-economical and Biological.
The amount of bacteria using mineral and organic nitrogen, actinomycetes, microscopic fungi and aerobic cellulose degrading microorganisms in two depth – 0 - 20 cm and 20-40 cm (in spring, summer and autumn) was established.
In drought year the amount of soil microorganisms in biological technology was above the standard – 133% and includes two soil layers: 147% - in depth 0 - 20 cm and 116% - in depth 20 - 40 cm, respectively.
The lowest amount of soil microorganisms was in the standard thechnology. Porosity of soil
was low and indicate lower biological activity.
The amount of bacteria using mineral and organic nitrogen, actinomycetes, microscopic fungi and aerobic cellulose degrading microorganisms in two depth – 0 - 20 cm and 20-40 cm (in spring, summer and autumn) was established.
In drought year the amount of soil microorganisms in biological technology was above the standard – 133% and includes two soil layers: 147% - in depth 0 - 20 cm and 116% - in depth 20 - 40 cm, respectively.
The lowest amount of soil microorganisms was in the standard thechnology. Porosity of soil
was low and indicate lower biological activity.
Keywords: apple; drought; soil microorganisms; technologies
Date published: 2017-03-13
Download full text