This standard is based on ISPM No. 11, «Pest risk analysis for quarantine pests, including an analysis of environmental risks and risks posed by living modified organisms». It provides detailed instructions for the following stages of pest risk analysis (PRA) for quarantine pests: preparatory stage, pest categorization, assessment of the likelihood of introduction, assessment of potential economic consequences and assessment of pest risk management. It contains a framework, based on successive questions, to decide whether an organism has the characteristics of a quarantine pest and to determine, if necessary, possible management options.

The article describes the technology of micro-clonal propagation of lemon Meyer variety in vitro. In vitro, the stages of sterilization, culture, branching, rooting of lemons in the propagation of the Meyer variety of lemon were studied. Different ratios of MS nutrient medium and different concentrations of auxin and cytokinin to the development of lemon exclusions were elucidated.

More than 10 types of the basic pests have been revealed in the territory of various soil-climatic zones of the Republic. Among them are adventive kinds –the Colorado potato beetle, the whitefly and the potato moth. Biological features of those types and seasonal dynamics of their development are established; the general tactic of protective methods are developed with application of progressive means and receptions. Precautionary receptions of potato tubers’ protection against potato moth are established and recommended.

In the conditions of Uzbekistan insecticidal Alfa Toro, 15% k.s.pokazal vыsokuyueffektyvnost against yablonnoyplodojorkinayablone v normerasxoda 0,2 l/ha. We recommend to include insecticide insecticide Alfa Toro, 15% k.s. for application against yablonnoyplodojorki on yablone at the rate of consumption 0,2 l/ha.

It was established, that the studied lines and families have a high adaptive ability.  Significant differences in most of the studied traits between the lines were not noted, but there was a slight excess in the number of boxes in L-51 and the height of the main stem in line L-52.

At present, the issues of identifying and creating adaptive forms characterized by the stability of the main economically valuable traits have acquired particular importance. One of the important indicators characterizing the resistance of plants to the influence of unfavorable environmental factors is homeostasis, which is a universal property in the system of the relationship between the genotype and the external environment. Homeostasis is nothing more than the ability of the genotype to minimize the effects of exposure to adverse external conditions.

Selection and seed production of agricultural plants are an integral part of adaptive crop production, and they play a leading role in the biologization and greening of intensification processes.

Today, as a result of the production activities of the State Unitary Enterprise "Tajik Aluminum Company" (TALCO SUE), the ecological situation in a large area is deteriorating, causing serious damage to the environment and human health. In particular, such a negative environmental situation can be observed in the deterioration of the natural environment of Sariosiyo, Uzun and Denau districts of Surkhandarya region. Based on the research, biochemical parameters of soil and wheat grains, including macro-and micronutrients, and quantitative indicators of carbohydrates were determined as a result of atmospheric pollution.

Cereal bars are thought of as promising for being functional and compact, and permit the expansion of gainful mixtures like eating routine strands. The point of this review was to expound grain bars added pumpkin, chia and sesame seeds, and submit them to physical, compound and tangible investigation. Two grain bars were expounded, conventional and light, submitted to both centesimal piece and tactile examination. Surface estimation and water action investigation were additionally completed on 0, 20 and 45 stockpiling days.

This article discusses morphological structure of mountain soils. The mountainous regions of the Republic of Uzbekistan are located mainly in Tashkent, Surkhandarya, Samarkand, Jizzakh, Syrdarya, Fergana Valley and Navoi regions, and differ from each other in their greenery, charm and structure. Mountain soils are distributed sequentially according to the law of vertical zoning, depending on the altitude above sea level. The soil cover in these regions is characterized by their development (evolution), genesis, agrochemical, agrophysical properties and, most importantly, morphological structure. Each region has its own natural factors, which directly affect the development and morphological structure of the soil cover.

In the climatic conditions of Uzbekistan, the lack of agro-technical and chemical measures against the Colorado potato beetle will cause significant damage to potato yields. If Colorado potato beetle larvae and beetles appear in the potato field, one of the following insecticides can be used successfully, considering other pests at once: Dalate-Plus, 10% e.k. – 0,05 l/ha, Deluxe Ultra, 10% e.k. – 0,035 l/ha.

It is recommended in the state that varieties of lemon in citrus fruits apply the correct agronomic measures in broad transcripts, obtain high yields from them, add weight value and improve and prevent hazards. Of the following insecticides per 10 liters of water against whitefly in lemon: Entoluxo 20% - 10 g, Entospilan 20% - 15 g, Agrofos Extra 60% - 4 g, Dalat plus 10% - 5 g. We recommend one of the drugs for taking antidepressants. High biological effectiveness is achieved when these preparations are used 2-3 times a day by spraying during the growing season.