Agriculture and forestry

Amons Sergey – Candidate of Agricultural Sciences, Associate Professor, Associate Professor of the Department of Botany, Genetics and Plant Protection, Vinnytsia National Agrarian University (21008, Vinnytsia, 3, Soniachna Str., e-mail: sergeyamons@gmail.com).

The productivity of under-cover and no-cover sowings of meadow clover under different sowing rates of cover and under-sowing crops in the forest-steppe remains insufficiently studied, the choice of sowing method is determined by biological, soil-climatic conditions, economic and economic possibilities of the farm. The article presents the results of studies on the influence of the method of creating a grass stand and different sowing rates of cover crops and under seeding on the formation of photosynthetic productivity of meadow clover crops in the conditions of the right-bank forest-steppe of Ukraine. Research has established that the method of creating a grass stand and the rate of sowing of cover crops and seed crops significantly influenced the level of yield, the formation of indicators of the assimilation surface, photosynthetic potential and the use of photosynthetically active radiation (PAR) by meadow clover grass stands. Research has established that the method of creating a grass stand and the rate of sowing of cover crops and seed crops significantly influenced the level of yield, the formation of indicators of the assimilation surface, photosynthetic potential and the use of photosynthetically active radiation (PAR) by meadow clover grass stands. At the same time, it should be taken into account that no-cover sowing was in the second year, while under-cover sowing was in the first year of using the grass stand. In coverless crops, with an increase in the rate of sowing seeds, the area of the leaf surface increased. In all cases, increasing the sowing rate of cover crops reduced the leaf surface area of clover in the second year of life. The conducted studies showed that grass clover accumulates solar energy most effectively in the first year of use. The coefficient of use of PAR was in the range of 2,01-1,66%. Its maximum value was noted on the option with clover under-sowing under millet with the minimum rate of its sowing and the average meadow clover – 2,01%.

1.Demydas' G.I., Zakhlebaev M.V. (2017). Density formation of white sweet clover in a single-crop and compatible sowings with annual cereal crops. Visnyk Umanskoho natsionalnoho universytetu sadivnytstva − Bulletin of the Uman National University of Horticulture. Issue 1. 53–56. [in Ukrainian].

2.Amons S.E. (2001). Vplyv norm vysivu pokryvnoho yachmeniu i koniushyny luchnoi na produktyvnist lanky sivozminy v umovakh zroshennia tsentralnoho Lisostepu Ukrainy. [The effect of sowing rates of cover barley and meadow clover on the productivity of the crop rotation link in the irrigation conditions of the central forest-steppe of Ukraine]. Zbirnyk naukovykh prats Vinnytskoho derzh. ahrar. universytetu − Collection of scientific papers of the Vinnytsia state. agrarian university. Issue 9. 31–35. [in Ukrainian].

3.Kvitko H.P., Tkachuk O.P., Hetman N.Ya. (2012). Bahatorichni bobovi travy–osnova pryrodnoi intensyfikatsii kormovyrobnytstva ta polipshennia rodiuchostigruntu v Lisostepu Ukrainy. [Perennial leguminous grasses are the basis of natural intensification of fodder production and improvement of soil fertility in the Forest Steppe of Ukraine]. Kormy i kormovyrobnytstvo − Fodder and fodder production. Issue 73. 113–117. [in Ukrainian].

4.Zabarna T.A. (2021). Formuvannia produktyvnosti koniushyny luchnoizalezhno vid faktoriv intensyfikatsii. [Formation of meadow clover productivity depending on intensification factors]. Silske hospodarstvo ta lisivnytstvo − Agriculture and forestry. 21. 95‒108. [in Ukrainian].

5.Metodyka provedennia doslidiv z kormovyrobnytstva ta hodivli tvaryn (1998). [Methods of conducting experiments on fodder production and animal feeding] [pid redaktsiieiu A.O. Babycha]: Vinnytsia, 78. [in Ukrainian].

6.Kovalenko V.P. (2015). Formuvannia ploshchi lystovoi poverkhni taurozhainist bahatorichnykh trav u zalezhnosti vid yoho skladu ta rivnia mineralnoho zhyvlennia. [Formation of leaf surface area and yield of perennial grasses depending on its composition and level of mineral nutrition]. Naukovyi visnyk NUBiP Ukrainy. Seriia «Ahronomiia». Scientific bulletin of NUBiP of Ukraine. "Agronomy" series. Issue 210, 1. 58–63. [in Ukrainian].

7.Koziar O.M. (2006). Formuvannia lystkovoho aparatu bobovo-zlakovymyahrofitotsenozamy zalezhno vid yikh skladu ta rivnia mineralnoho udobrennia v umovakh pravoberezhnoho Lisostepu Ukrainy. [Formation of the leaf apparatus by legume-cereal agrophytocenoses depending on their composition and the level of mineral fertilization in the conditions of the right-bank forest-steppe of Ukraine]. Naukovyi visnyk Natsionalnoho ahrarnoho universytetu − Scientific Bulletin of the National Agrarian University. Issue 102. 96–101. [in Ukrainian].

8.Atkin O.K., Millar A.N., Gardeström P., Day D.A. (2000). Photosynthesis,Carbohydrate Metabolism and Respiration in Leaves of Higher Plants // Photosyntesis: Physiology and Metabolism / Eds Leegood R.C., Sharkey T.D., von Gaemmerer S. Berlin: Springer-Verlag. 153–175. [in English].

9.Stotska S.V. (2009). Dynamika narostannia lystovoi poverkhni takontsentratsiia khlorofilu v koniushyni luchnii. [Dynamics of leaf surface growth and chlorophyll concentration in meadow clover]. Kormy i kormovyrobnytstvo − Fodder and fodder production. Issue 62. 112–119. [in Ukrainian].

10.Huliaiev B.I. (2006). Fotosyntez i ekofiziolohichni osnovy fotosyntetychnoiproduktyvnosti kukurudzy. Rehuliatsiia fotosyntezu i produktyvnist roslyn: fiziolohichni ta ekolohichni aspekty. [Photosynthesis and ecophysiological basis of photosynthetic productivity of corn. Regulation of photosynthesis and plant productivity: physiological and ecological aspects]. K.: Fitosotsiotsentr. 257–302. [in Ukrainian].