Optimum Number of Herbage Mix Components for Pastures in the Cryolithic Zone Near the Amga River Used for Haymaking and Grazing

Author:

Pavlov N E,Platonova A Z,Storozheva N N

Abstract

Abstract This article presents the results of multiyear work on the establishment of the optimum number of herbage mix components in the cryomorphic alluvial soils of the Amga river. The authors provide recommendations on seeding rates and times for herbage mixes. They present the data on the dynamics of herbage yields. Herbage yield changes across the experiment options depending on the age of the herbage mix, vegetation periods, and the hydrothermal index. The authors recommend using the agroecological components of herbage mixes with the drought-tolerant crop of the Manchaary variety of psathyrostachys juncea. The authors establish the options that are guaranteed to produce 128-140 dt/ha of herbage on average without watering. Irrespective of the weather conditions during the research years, herbage mixes showed a weak negative correlation between the yields of herbages of different ages and the hydrothermal indices over the research years. In 4 and 5-component herbage mixes, the correlation coefficient shows an explicit negative correlation. This signifies that the Manchary variety is a good choice for future forage grass mixes. The research mainly focused on recognized varieties of forage grasses. The conducted research showed that the Manchaary variety is sustainable and can be used over a long time both on its own or as part of complex herbage mixes of up to 5 components.

Publisher

IOP Publishing

Subject

General Engineering

Reference27 articles.

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