РАСТЕНИЕВОДСТВО И ЗЕМЛЕДЕЛИЕ
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EFFECT OF DIAZOTROPH PREPARATIONS AND NITROGEN FERTILIZERS
ON PRODUCTIVITY OF SPRING GRAMINEOUS
ALFEROV A. A., PhD Agr. Sc.
CHERNOVA L. S., PhD Agr. Sc.
The All-Russian Research Institute of Agrochemistry n. a. D. N. Pryanishnikov
127550, Russia, Moscow, Pryanishnikova str., 31a
E-mail:
alferov72@yandex.ruThe research tested influence of associaƟve diazotroph on spring wheat and barley on sod-podzolic, grey forest and cherno-
zem soils of different texture under various mineral nutriƟon. Soil type influenced the effecƟveness of seed inoculaƟon with
preparaƟons
“Rizoagrin”
and
“Flavobakterin”
on the nitrogen-free background. BiopreparaƟons provided weighted mean in-
crease in wheat producƟvity of 23% on chernozem, barley — 12%. Increase in grain yield made up 14 and 11%, respecƟvely
on grey forest soil. ApplicaƟon of nitrogen-fixing microorganisms improved producƟvity of wheat by 13–18% on sod-podzol-
ic soil that had low humus content and microbial acƟvity, compared to chernozem or grey forest soils, barley — by 13–19%.
Nitrogen ferƟlizaƟon exceeded biopreparaƟon effecƟveness. ApplicaƟon of N
30
on sod-podzolic soil increased yield of wheat
by 20–44%, barley — by 22–57%. Strong and stable biopreparaƟon effect on wheat producƟvity happened on sod-podzolic
soil on the background of N
30
under sufficient water content: yield increase reached 10–20%; on grey forest soil — 12%, cher-
nozem — 13%. For barley yield increases made up 14–23, 9 and 11%, respecƟvely.
“Rizoagrin”
and
“Flavobakterin”
had no sig-
nificant influence on protein content in grain but improved crude protein yield of wheat by 5–24% and barley — by 9–31% due
to higher grain producƟvity.
Keywords:
spring wheat, barley, producƟvity, grain protein, nitrogen ferƟlizer,
“Rizoagrin”
,
“Flavobakterin”
, associaƟve nitro-
gen fixaƟon.
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