The effect of chemical agents on the productivity of crop rotations with legumes and cereals in the conditions of unstable moisture in the south of the Non-Black Soil Zone of Russia
https://doi.org/10.30766/2072-9081.2021.22.2.223-233
Abstract
The article summarizes the results of 1990-2012 research conducted during the stationary experiment on leached heavy loam chernozem in the Republic of Mordovia. The objects of the study are two crop rotations (grain-grass-fallow and grain-grass crop rotations) where alfalfa of the VEGA 87 variety was used as a bean component, smooth brome (Bromus inermis) Penza 1 was used as a grain component. It has been established that mineral fertilizers in grain-grass-fallow crop rotations with legumes increased productivity by 0.34-0.55, with cereals – by 0.31-0.73 tons of feed units/ha. That provided to get additional income from 1.19 to 1.40 and 1.09 to 1.47 rub/rub, respectively. Recommended doses of mineral fertilizers against soil liming by 0.5 hydrolytic acidity (h.a,) were N22-39P42K52, for grain-grass-fallow crop rotation with alfalfa and N27-71P42K52. with smooth brome. In the grain-grass crop rotation with legume and cereal components the payback of 1 kg active ingredient (a.i.) of complete mineral fertilizer was 6.13 and 6.17 kg feed units, additional income was 2.00 and 1.99 rub/rub, the productivity increased by 0.86-1.08 and 0.84-1.22 tons of feed units/ha, respectively. The payback of 1 kg of a. i. nitrogen as part of a complete mineral fertilizer in this crop rotation averaged 13.04 kg feed units versus 11.5 kg in legumes. Recommended doses of mineral fertilizers were N26-87P46K65 against the background of liming of the soil by 0.5-1.0 h. a. In crop rotation with smooth brome phosphorus-potash fertilizers should not be applied due to the low additional income (0.97-1.07 rub/rub).
Supporting agencies: The research was carried out under the support of the Ministry of Science and Higher Education of the Russian Federation within the state assignment of Federal Agricultural Research Center of the North-East named N. V. Rudnitsky (theme No. 0528-2019-0100).
About the Authors
L. N. Prokina
Federal Agricultural Research Center of the North-East named N. V. Rudnitsky
Russian Federation
Russian Federation
Lyudmila N. Prokina, PhD in Agricultural science, leading researcher, Head of the Laboratory of Agricultural Chemistry, Mordovia Research Agricultural Institute
5, Michurin str., Yalga, Saransk, Republic of Mordovia, 430904
S. V. Pugaev
Federal Agricultural Research Center of the North-East named N. V. Rudnitsky
Russian Federation
Russian Federation
Sergey V. Pugaev, PhD in Biology, senior researcher, the Laboratory of Agricultural Chemistry, Mordovia Research Agricultural Institute
5, Michurin str., Yalga, Saransk, Republic of Mordovia, 430904
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Review
For citations:
Prokina L.N., Pugaev S.V. The effect of chemical agents on the productivity of crop rotations with legumes and cereals in the conditions of unstable moisture in the south of the Non-Black Soil Zone of Russia. Agricultural Science Euro-North-East. 2021;22(2):223-233. (In Russ.) https://doi.org/10.30766/2072-9081.2021.22.2.223-233
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