Characteristics of the Soils with the Bacillus thuringiensis Entomopathogenic Bacteria Formed in the Belt of Wild Fruit Forests of the IlI and Zhetysu Alatau

Nurzikhan Seitkali¹, Kanaibek Kubenkulov¹ and Abai Orazovich Sagitov²

¹Department of Soil science and Agrochemistry, Kazakh National Agrarian University.

²Kazakh scientific-research institute for plant protection and quarantine (Kazakhstan), Kazakh National Agrarian University, Kazakhstan, the city of Almaty, Abaya Street 8, 050010.

DOI : http://dx.doi.org/10.13005/bbra/2179

ABSTRACT: This paper presents the distribution areas of the Sievers apple (Malus niedzwetzkyana) in Central Asia, the history of its research and the profile structure, the composition and properties of the soils, under which they were formed, and the areas where the apple ermine moth and the Bacillus thuringiensis bacteria developed, the strains of these bacteria are the basis for the preparation of biological products against coleopteran pests. Formation of dark grey soils occurs in a neutral environment under the optimal hydrothermal conditions, which ensure the accumulation of significant amounts of humus. Heavy granulometric composition of the soils, consisting primarily of coarse dust (43-46%) and silt (21%), contributed to this process. In such conditions, a sufficient amount of labile forms of nutrients accumulates in the soil. Thus, a conjugate comparative morphological characteristic of the genetic horizons of the dark-grey soils profile, their composition and properties gives reason to believe that the conditions of heat and moisture supply with the increased amount of crop residues create optimal conditions for the development of microflora, including the Bacillus thuringiensis bacteria.

KEYWORDS: humus; entomopathogens; biopeticide; granulometry; profile; soils

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