STUDYING THE ECONOMIC CHARACTERISTICS OF MULBERRY SEEDLINGS PROPAGATED IN A NEW WAY IN THE TASHKENT REGION

Аннотация

The article presents the problems of studying the economic characteristics of mulberry seedlings grown in a new way. Yield characteristics of mulberry seedlings grown for rearing caterpillars depend on the quality of the cuttings, the mulberry variety, and agricultural care practices. KEYWORDS: Seedlings, cuttings, leaves, joints, roots, varieties, twigs, nitrogen, phosphorus. “STUDYING THE ECONOMIC CHARACTERISTICS OF MULBERRY SEEDLINGS PROPAGATED IN A NEW WAY IN THE TASHKENT REGION” P age 106 | 5 INTRODUCTION weeding, and applying organic and mineral fertilizers. Watering 25 times per season, One of the urgent problems is the fertilizers were applied in two periods during development of sericulture. To solve this the growing season: in the first, in the second problem, the first step is to grow mulberries to decade of May, 2 kg of nitrogen and 0.5 kg of create an adequate nutritional base for the pure phosphorus were applied. A month later, silkworm. For this purpose, mulberry seedlings when re-feeding, 3 kg of nitrogen and 0.5 kg of grown from cuttings treated with a 3% phosphorus were added due to the pure aqueous solution of the biologically active substance. Rows and aisles were treated. It polymer “GLEDAN” were studied during the should also be noted that mulberry seedlings growing season in comparison with the grown from cuttings do not require processing comparative variant. in the first year of vegetation (except for The yield of mulberry seedlings grown for tillage). This saves a lot of money and labor. feeding depends on the quality of the cuttings, THE MAIN FINDINGS AND RESULTS the mulberry variety, agricultural care, etc. Two or three shoots can develop from cuttings The peak of plant development fell on the planted in a horizontal position. In the course growing season, i.e. in the first decade of July. of our experiment, in the process of leaf At the same time, the number of leaves on formation in mulberry seedlings grown from mulberry seedlings Uzbeksky, Kokuso-70 was cuttings, depending on the mulberry varieties, 20-25, the distance between the leaves was 2- the first leaves were observed 45-50 days after 2.5 cm, the comparative variant of the variety planting the cuttings. To improve the growth Tajik seedless number of leaves was 15-18, the and development of seedlings, a number of distance between the leaves was 3.-4 cm (Fig agrotechnical measures were carried out, such 1). as watering seedlings, loosening the soil, “STUDYING THE ECONOMIC CHARACTERISTICS OF MULBERRY SEEDLINGS PROPAGATED IN A NEW WAY IN THE TASHKENT REGION” P age 107 | 5 А B When propagating mulberries by cuttings at According to our experiments, in such varieties the place of permanent growth, they have a of mulberry as Uzbeksky, Kokuso-70, Pioner, short transition period from planting to use, as Marhamat-2017 and Tajik seedless, we well as a high yield of leaves in the first year. studied the appearance of the first, second and fifth leaves on a branch in spring, the (Fig. 1 A) Arrangement of leaves on a branch of density of leaves, the yield of leaves and the mulberry seedlings grown from cuttings of the growing season. (1-table). Kokuso-70 variety, (Figure 2 B) Arrangement of leaves on a branch of mulberry seedlings grown from the Tajik seedless (comparative) variety, (LLC “Pskent Agro Pilla” of the Pskent district of the Tashkent region 11.07.2022) Table 1 The yield of leaves of mulberry tree seedlings grown from cuttings in a new way 2021 as a percentage Productivity of Name of the mulberry Leaf yield per of the leaves from a Rating variety hectare, centner/ha comparative bush, kg variety Uzbek 1,850±0,016 92,5 153,5 1 Kokuso-70 1,782±0,015 89,1 147,9 2 Pioneer 1,464±0,012 73,2 121,5 4 Markhamat 2017 1,578±0,013 78,9 131,5 3 Tajik seedless 1,205±0,010 60,25 100 5 (comparative) (LLC “Pskent Agro Pilla” and the farm of the season of the caterpillars and prevents Pskent district of the Tashkent region nutritional deficiencies in the silkworm. 05/11/2022) Along with an increase in the In the new method, 3 or more branches were growth dynamics of branches, it leads to an formed on seedlings grown from cuttings, increase in the number of leaves in them and, depending on the mulberry variety, which has as a result, an increase in the yield of leaves. its own root grown from cuttings. Shoot This ensures that the leafy crop is delivered in growth dynamics indicators reached high a short period of time during the feeding results on a monthly basis. (Table 2). Table 2 “STUDYING THE ECONOMIC CHARACTERISTICS OF MULBERRY SEEDLINGS PROPAGATED IN A NEW WAY IN THE TASHKENT REGION” P age 108 | 5 Dynamics of shoot growth in mulberry seedlings obtained from cuttings in a new way 2021 Name of the First decade of July First decade of September mulberry variety Number of Root neck Overall Number Root neck overall formed of length, of of length, cm branches branches, cm formed branches thickness, branches thickness, in mm mm Uzbek 2,5 13,0