Dry matter accumulation and nutrient consumption by winter wheat depending on the harvest level
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2022-11-06 07:35
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631.45:631.95(478) (2)
Știința solului. Pedologie. Cercetări pedologice (714)
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LEAH, Nicolai, ANDRIEŞ, Serafim, GOJINEȚCHI, Ana. Dry matter accumulation and nutrient consumption by winter wheat depending on the harvest level. In: Eastern European Chernozems – 140 years after V. Dokuchaev, : International Scientific Conference, 2-3 octombrie 2019, Chişinău. Chişinău: Centrul Editorial-Poligrafic al USM, 2019, pp. 156-161. ISBN 978-9975-149-37-2.
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Eastern European Chernozems – 140 years after V. Dokuchaev, 2019
Conferința "Eastern European Chernozems – 140 years after V. Dokuchaev, "
Chişinău, Moldova, 2-3 octombrie 2019

Dry matter accumulation and nutrient consumption by winter wheat depending on the harvest level

CZU: 631.45:631.95(478)

Pag. 156-161

Leah Nicolai, Andrieş Serafim, Gojinețchi Ana
 
Institute of Soil Science, Agrochemistry and Soil Protection” Nicolae Dimo”
 
 
Disponibil în IBN: 1 noiembrie 2019


Rezumat

The features of dry matter accumulation and nutrient consumption of winter wheat during various periods of vegetation are revealed.In the phase of spring tillering, winter wheat accumulates about 6–9% of dry matter and about 20% of nitrogen and phosphorus and 32% of potassium from their maximum quantity. By the booting phase, wheat accumulates about 20% of dry matter and uses about 75% potassium, 50% phosphorus and 40% nitrogen from the total need from the soil. The greatest amount of dry matter - about 80% of the total - winter wheat accumulates during the period from the booting phase to milk-wax maturity of grain. By the flowering phase, plants consume the maximum (100%) amount of potassium, 67% nitrogen and 73% phosphorus (from total). A close relationship has been established between productivity and the amount of organic mass accumulated in winter wheat in various phases of development. Fertilizer contributed to a more intensive (1.4-3.8 times more) use of nutrients from the soil. The most intense nitrogen consumption of winter wheat per unit time falls on the period from booting to milk-wax maturity of grain. During this period, wheat uses 1.7-2.6 kg/ha of nitrogen daily for the formation of 4.5-5.5 t/ha of grain. The optimization of the nitrogen nutrition of winter wheat during this period determines the level of yield and its quality.

Cuvinte-cheie
chernozems, dry matter, harvest, Nutrient consumption, winter wheat