IMPACT OF GREEN MANURE ON CROP YIELD OF CEREALS IN CONDITIONS OF IRRIGATION OF THE TERSKO-SULAK SUBPROVINCES

Aim. The aim of the research was to identify the effect of types of fertilizer on increasing soil fertility and corn yield of grain and sorghum in conditions of irrigation of the Tersko-Sulak subprovince. Methods. Carrying out some field experiments: conducting observations and laboratory tests, selection of soil and plant samples was carried out according to generally accepted methods: statistical processing of yield data was carried out by the method of variance analysis based on Kirov Federal State Unitary Enterprise and FSBSI Dagestan Agricultural Research Institute named after F.G. Kisriev. Results. Studies showed that in the post-harvest period after harvesting winter wheat, it is better to cultivate green manure with the presence of legumes. A valuable biological feature of them is the ability to absorb atmospheric nitrogen. The powerful root system of the seeding pea improves the physical properties of the soil, as well as microbiological activity. The most favorable conditions are created for the growth and development of maize and sorghum, after plowing of fertilizers in the stubble period in the conditions of irrigation of the Tersko-Sulak subprovince, by applying mineral fertilizers at a dose of N150 P75 K75, seeding peas, manure (30 t / ha), In these cases, on average, over two years, the highest yield of maize was 5.6-5.7-5.5 t / ha and grain sorghum, respectively, 4.7-4.8-4.5 t / ha. Conclusion. For the first time, in conditions of irrigation of the Tersko-Sulak subprovince, were obtained the results on the effectiveness of different types of fertilizers introduced into the soil.

1. Aytemirov A.A., Babayev T.T., Abdulgalimov M.M. The agriculture biologization is a contribution to the future. Gornoe sel'skoe khozyaistvo [Mountain agriculture]. 2016, no. 3, pp. 95–101. (In Russian)

2. Aytemirov A.A. O kontseptsii osnovnykh napravlenii po biologizatsii zemledeliya v Respublike Dagestan [On the concept of the main directions of biological agriculture in the Republic of Dagestan]. Materialy Mezhdunarodnogo foruma "Kaspii – more druzhby i nadezhd", Makhachkala, 11-15 oktyabrya, 2016 [Materials of the International forum «Caspian sea – the sea of friend-ship and hopes», Makhachkala, 11-15 October, 2016]. Makhachkala, 2016, pp. 92–95. (In Russian)

3. Aytemirov A.A. Sideral'nye kul'tury kak faktor biologizatsii [Sederal cultures as a factor of biologization]. Materialy XVIII Mezhdunarodnoi nauchnoi konferentsii «Biologicheskoe raznoobrazie Kavkaza i Yuga Rossii», Groznyi, 4–5 noyabrya, 2016 [Materials of the XVIII International Scientific Conference "Biological Diversity of the Caucasus and the South of Russia", Grozny, 4-5 November, 2016]. Grozny, 2016, part 1, pp. 47–52. (In Russian)

4. Aytemirov A.A., Babaev T.T. Sevooborot kak faktor biologicheskoi intensifikatsii [Crop Rotation as a factor of biological intensification]. Mezhdunarodnaya nauch-no-prakticheskaya konferentsiya «Sovremennye prob-lemy innovatsionnogo razvitiya sel'skogo khozyaistva i nauchnye puti tekhnologicheskoi modernizatsii APK», Makhachkala, 20-23 dekabrya, 2016 [International scientific and practical conference "Modern problems of innovative development of agriculture and scientific ways of technological modernization of agriculture", Makhachkala, 20-23 December, 2016]. Makhachkala, 2016, pp. 203–207. (In Russian)

5. Aytemirov A.A., Khalilov M.B., Babaev T.T., Amiraliev Z.G. The role of biogenic matter in increasing the productivity of corn and sorgo in the Tersko-Sulak sub-province conditions of irrigation. South of Russia: ecology, development, 2017, vol. 12, no. 2, pp. 180–189. (In Russian) Doi: 10.18470/1992-1098-2017-2-180-189

6. Loshakov V.G. Sideratsiya kak faktor vosproizvodstva plodorodiya pochvy i biologizatsii zemledeliya [Sideration as a factor in the reproduction of soil fertility and biologization of agriculture]. Mezhdunarodnaya nauchno-prakticheskaya konferentsiya «Sovremennye problemy innovatsionnogo razvitiya sel'skogo khozyaistva i nauchnye puti tekhnologicheskoi modernizatsii APK», Makhachkala. 20-23 dekabrya, 2016 [International scientific-practical conference "Modern problems of innovative development of agriculture scientific and technological modernization of agriculture", Ma-khachkala, 20-23 December, 2016]. Makhachkala, 2016, pp. 18–23. (In Russian)

7. Loshakov V.G. Zelenoe udobrenie kak biologicheskii faktor sokhraneniya i povysheniya plodorodiya pochvy [Green fertilizer as a biological factor of soil fertility preservation and improvement]. Mezhdunarodnaya nauchno-prakticheskaya konferentsiya «Problemy razvitiya zemledeliya v Nechernozem'e», Belgorod, 2016 [International scientific and practical conference "problems of agriculture development in non-Chernozemye", Belgorod, 2016]. Belgorod, 2016, pp. 119–125. (In Russian)

8. Loshakov V.G. Zelenoe udobrenie v zemledelii Rossii [Green fertilizer in the agriculture of Russia]. Moscow, VNIIA Publ., 2015, 300 p. (In Russian)

9. Loshakov V.G. Green fertilizer in the non-Chernozem zone. Vladimirskii zemledelets [Journal of Vladimir farmer]. 2013, no. 1 (63), pp. 13–18. (In Russian)

10. Loshakov V.G. Ekologicheskie funktsii zelenogo udobreniya [Ecological functions of green fertilizer]. Kursk, VNIIZ and EPZ Publ., 2017, pp. 79–84. (In Russian)

11. Metodika gosudarstvennogo sortoispytaniya sel'skokhozyaistvennykh kul'tur [Methods of state variety testing of agricultural crops]. Moscow, 1985, 263 p. (In Russian)

12. Kachinskiy N.A. Pochva, ee svoistva i zhizn' [Soil, its properties and life]. Moscow, Nauka Publ., 1975, 293 p. (In Russian)

13. Stankov N.Z. Kornevaya sistema polevykh kul'tur [Root system of field crops]. Moscow, Kolos Publ., 1964, 280 p. (In Russian)

14. GOST 26213-91 Soils. Methods of determination of organic matter by the method of Tyurin in the modification tsinao 1991. No. 2389.

15. GOST 26207-84 Soils. Methods for determining total nitrogen. 1984. No. 661.

16. GOST 26261-84 Soils. Methods for determination of total phosphorus and total potassium. 1984. No. 2939.

17. Dospekhov B.A. Metodika polevogo opyta [Technique of field experience]. Moscow, 1985, 351 p. (In Russian)

18. Koren'kov D.A., Gavrilov K.A., Shil'nikov I.A., Vasil'ev V.A. Spravochnik agrokhimika [Reference book of agrochemist]. Moscow, Rossel'khozizdat Publ., 1980, 286 p. (In Russian)