In keeping up and expanding soil fertility by applying siderite (green manure), increasing the yield of cotton by planting and cultivating pisum, pea, rapeseed, and grain as siderite crops from selected plants; amid cultivation, 39-51 tons of green biomass per hectare was collected in summer and 17-22 tons in autumn, and their effect on weed numbers were determined.

In this case, in the experimental field, more perennial weeds were found, such as salomalaykum (Cyperus rotundus L.), field bindweed (Convolvulus arvensis L.), ajrik (Cynodon dactylon (L.) Pers.), and annuals were found in semizoot (Portulaca oleracea L.), white sorghum (Chenopodium album L.), common rosemary (Amaranthus retleflexus L.), ituzum (Solanum nigrum) and others were observed.

As a result, the number of yearly and perennial weeds beneath the influence of summer sideration diminished by 2.4-2.6 units compared to the control option before the 1st cultivation between cotton rows, and by 4.6-4.7 units before the final irrigation, or under the influence of autumn sideration. In accordance with the over, a decrease of 2.8-3.1 units was accomplished, and before the final irrigation - to 5.0 units. The most noteworthy reduction in weeds was observed in rapeseed and barley variants utilized as siderates in both experiments.

Pisum, peas, barley and rapeseed siderate crops, sideration, glucosinolates, soil

In order to preserve and increase soil fertility with the use of sideration (green manure), to increase the yield of cotton, 39-51 tons per hectare in the summer and 17-5 tons in the autumn. Up to 22 tons of green biomass will be collected.

The number of annual and perennial weeds under the influence of summer and autumn sideration is 2.4-2.6 and 2.8-3.1 pieces, respectively, before the 1st pre-cultivation and between the rows of cotton and 4.6-4 before the final irrigation, a decrease of 7 and 5.0 units were provided.

REFERENCES

Bakhromov Sh., Siddiqov D. (2016). Effective weed control measures in winter wheat fields. Proceedings of the International Scientific-Practical Conference on Current Directions of Field Crops Breeding, Seed Production and Agro-technology, Part 2. –Tashkent. – pp. 357-360. (Бахромов Ш., Сиддиқов Д. Кузги буғдой далаларида бегона ўтларга қарши самарали кураш чоралари // Дала экинлари селекцияси, уруғчилиги ва агротехнологияларининг долзарб йўналишлари мавзусидаги Халқаро илмий-амалий конференцияси материаллари тўплами, 2-қисм. -Тошкент, 2016. – Б. 357-360.)

Botirov X.F., Kiryigitov X.B. (2012). Pojnivnыe sideraty v borbe s sornyakami. The role and future tasks of young researchers in the development of agricultural science and production. Proceedings of the scientific-practical conference of trainee-researchers-researchers. Part 1. – Samarkand. – pp. 41-43. (Ботиров Х.Ф., Кирйигитов Х.Б. Пожнивные сидераты в борьбе с сорняками // Аграр фан ва ишлаб чиқаришини рвожлантиришда ёш тадқиқотчиларнинг ўрни ва истиқболдаги вазифалар. Стажёр-тадқиқотчи-изланувчиларнинг илмий-амалий анжумани тўплами. 1-қисм. Самарқанд, 2012. –С. 41-43.)

Dovban K.I. (2009). Green fertilizer in modern agriculture: theory and practice / K.I.Dovban. – Minsk: Belarusian. Science. – p. 404. (Довбан К.И. Зеленое удобрение в современном земледелии: вопросы теории и практики/К.И.Довбан. - Минск: Белорус. Наука, 2009. -404 с.)

Kovalenko I.N., Zaitsev A.M. (2013). Possibilities of weed control when using different green manure crops in the conditions of Cisbaikalia. Materials of the International Scientific and Practical Conference of Young Scientists “Research and Development for Implementation in the Agroindustrial Complex”. Part I. – Irkutsk. – pp. 56-61. (Коваленко И.Н., Зайцев А.М. Возможности борьбы с сорняками при использовании разных сидеральных культур в условиях Предбайкалья // Материалы Международной научно-практической конференции молодых ученых «Научные исследования и разработки к внедрению в АПК». Часть I. Иркутск, 2013 –С. 56-61.)

Murodov R.N., Rizaev Sh.X. (2012). Weeds and agro-technical measures against them. The role of student research in solving problems on farms. Proceedings of the scientific conference of gifted students and masters. – Samarkand. – pp. 60-61. (Муродов Р.Н., Ризаев Ш.Х. Бегона ўтлар ва уларга қарши агротехник тадбирлар // Фермер хўжаликларида муаммолар ечимида талабалар илмий-тадқиқотларининг ўрни. Иқтидорли талаба ва магистрантларнинг илмий конференцияси материаллари тўплами. Самарқанд, 2012. –Б. 60-61.)

Savenkov V.P., Dobromyslova L.N. (2006). The responsiveness of rapeseed to mineral fertilizers and chemical means of protection against weeds, depending on the seeding rates and weather conditions of the growing season. Improving the organization and methodology of agrochemical research in the geographical network of experiments with fertilizers: Materials of the All-Russian scientific method. Conference. – Moscow. – pp. 132-134. (Савенков В.П., Добромыслова Л.Н. Отзывчивость рапса на минеральные удобрения и химические средства защиты от сорняков в зависимости от норм высева и погодных условий вегетации // Совершенствование организации и методологии агрохимических исследований в географической сети опытов с удобрениями: Материалы Всероссийской науч.-метод. конф. – М., 2006. – С. 132-134.)

Yuldashev A., Turdieva N., Alamatov D., Shernazarova N. (2011) Determining the type, composition and amount of weeds in cotton and cereals. Introduction of new energy-saving agro-technologies in agriculture. Collection of reports of the Republican scientific-practical conference. – Tashkent. – pp. 233-234. (Юлдашев А., Турдиева Н., Аламатов Д., Шерназарова Н. Ғўза ва ғаллазорлардаги бегона ўтларнинг турини, таркибини ва миқдорини аниқлаш // Қишлоқ хўжалигида янги тежамкор агротехнологияларни жорий этиш. Республика илмий-амалий конференцияси маърузалари тўплами. – Тошкент, 2011. –Б. 233-234.)

Khasanova F.M., Salomov Sh.T. (2011). Weed control measures in cotton and grain fields. Introduction of new energy-saving agro-technologies in agriculture. Collection of reports of the Republican scientific-practical conference. – Tashkent. – pp. 258-259. (Хасанова Ф.М., Саломов Ш.Т. Ғўза ва ғалла майдонларида бегона ўтларга қарши кураш тадбирлари // Қишлоқ хўжалигида янги тежамкор агротехнологияларни жорий этиш. Республика илмий-амалий конференцияси маърузалари тўплами. Тошкент, 2011. –Б. 258-259.)

Hasanov B.O., Hamraev A.Sh., Eshmatov O.T., Alimuhammedov S.N. (2002). and others. Protect cotton from pests, diseases and weeds. – Tashkent: Universitet. – p. 379. (Ҳасанов Б.О., Ҳамраев А.Ш., Эшматов О.Т., Алимуҳаммедов С.Н. ва бошқалар. Ғўзани заракунанда, касалликлар ва бегона ўтлардан ҳимоя қилиш. –Т.: Университет, 2002. - 379 б.)

FOREIGN PUBLICATIONS:

Akem C., Ceccareli W., Eeskine and Lenne J. 2003. Using genetic diversity for disease resistance in agricultural production. Outlook on Agriculture 29 (1) – pp. 25-30.

Anderson A., Shackley A.J. and Sawkins D. Grain yield and quality: does there have to be trade off. Wheat: Prospects for Global Improvement, 1998 Kluwer Academic Publishers. Printed in the Netherlands.- pp. 249-255.

Ekiz H., Safl Kiral A., Akcm A. and Simsek L. Cyto-plasmatic effects on quality traits of bread wheat (Triticum aestivum L.) Wheat prospects for global improvement. –Ankara, 1996. – pp. 255-262.

Haramoto E.P., Gallandt E.R. (2004). Brassica cover cropping for weed management: a review, Renewable Agriculture and Food Systems. No. 19, pp. 187-198.

Johansson E., Prieto-Linde M.L. and Jonsson J.O. Breeding stability in bread milling quality. Bedo Z and Lang L(eds.) Wheat in Global Environment, 2001 Kluwer Acad. Publ. Pr. In the Netherlands. – pp. 229-235.

Saad L., Hafez., Mike Thornton., Dave Barton at all. (2005). Management of oilseed radish and Yellow mustard green manure crops. Amer.J.of Potato Res. Vol. 1,1. – pp. 6-8.