EFFECT OF MULBERRY SILKWORM FEEDING ON DISEASED MULBERRY LEAVES ON WORM VIABILITY AND COCOON PRODUCTIVITY

Аннотация

In the case of rearing silkworm caterpillars, the caterpillar does not feed well with infected leaves, which leads to a decrease in the number of cocoons (73-76%) during the transition by instars, the larval stage lasts, the extension of the fifth instar compared to the growth options (89%). It turned out that the yield of cocoons decreased by 13-18% and 1 box decreased by 21-25 kg. “EFFECT OF MULBERRY SILKWORM FEEDING ON DISEASED MULBERRY LEAVES ON WORM VIABILITY AND COCOON PRODUCTIVITY” P age 111 | 4 KEYWORDS: Mulberry tree, stem, mulberry leaf, feeding, microorganisms, disease, actinomycetes, environmental factors, dehydration, lighting, survival, continuation of the worm period, cocoon, harvest. INTRODUCTION Mulberry trees suffer from a variety of diseases during their growth and It is known that in the tasks set by the Decree development. These diseases are caused by of the President of the Republic of Uzbekistan bacteria, viruses, fungi, mycoplasmas, dated January 17, 2020 No PQ-4567, the actinomycetes, and their damage is increasing expansion of mulberry trees in the Republic, year by year. To date, more than 100 mulberry the use of water-saving irrigation technologies diseases have been identified, and most in mulberry growing. And to stimulate the mulberry trees are planted along roadsides, effective implementation of agro-technical ditches, ditches, and fields, which are measures, increase the food base of the silk contaminated with dust. Under such industry through the widespread introduction conditions, scientists have conducted a series of innovative ideas, scientific developments of experiments on the presence of harmful and scientific achievements, increase the microorganisms on mulberry leaves, the production of export-oriented products. disease of nutritious mulberry leaves, the The Uzbekpaksanoat Association, together causes of the disease and their negative with local authorities, monitors the impact on leaf yield, and measures to prevent establishment of mulberry groves by silkworm and combat them. Certain practical organizations. The results of the monitoring recommendations are given. are discussed once a year by the district Of these, about 20 species of wilt fungi are the councils of people's deputies and mulberry most common, of which 7 species are found in trees are planted throughout the year. a mulberry, and the trees planted in rows decision shall be made to suspend the validity around the fields will have a favorable of tax benefits and preferences applicable to environment for the development of fusarium land tax in accordance with the legislation for species due to environmental conditions in the non-established silkworm enterprises. southern regions. Studies have shown that Systematically: organizes the development, mulberry fusarium wilt in Ukraine and Central implementation and monitoring of regional Asia causes dryness of mulberry twigs in the programs for the establishment of new bush mulberry due to tracheominosis type mulberries in the regions, the renewal of disease, and 20 tons of manure, 60 kg of obsolete mulberries, the organization of nitrogen per 1 hectare of mulberry per year to cocoon growing seasons, weekly with the combat it. Says 30 kg of phosphorus should be heads of district sectors, relevant local added. authorities organizes meetings with silkworm organizations to identify and eliminate Consequently, the amount of water in problems in the cocoon industry, and visits to mulberry leaves plays an important role in the the homes of cocooners during the cocoon activity of silkworms, as 85-88% of the worm’s growing seasons. body is water and receives the necessary water, protein, vitamins and other substances THE MAIN FINDINGS AND RESULTS “EFFECT OF MULBERRY SILKWORM FEEDING ON DISEASED MULBERRY LEAVES ON WORM VIABILITY AND COCOON PRODUCTIVITY” P age 112 | 4 only from mulberry leaves. This means that to high or low environmental factors. how much silkworms eat and digest in a given Experiments have shown that mulberry leaves leaf depends on the amount of water in the are exposed to sunlight, that tree trunks leaf, whether the leaf is wilted or not. a flat become diseased due to dehydration and lack skin shed, high viability, cocoon wrapping of light, and that the plant is poisoned by air. process, and cocoon maturation were From the above data, it can be seen that shortened to 2 days. mulberry tree diseases have a negative impact In fact, when silkworms are fed mulberry on the development and yield of mulberry leaves, the larval period is reduced by 1-2 days, leaves, reducing its nutritional properties. the live cocoon and its silk weight increase by However, when silkworms are fed with 4.6-4.7%, and the total number of cocoons infected mulberry leaves, their development, wrapped by 5.1-5.4%. 'was found. Many years viability, prolongation of the worm cycle, and of research on silkworm rearing technology their effect on cocoon yield have not been well have show