SOIL TEMPERATURE AND SOIL AERATION EFFECTS ON CONCENTRATIONS AND TOTAL AMOUNTS OF NUTRIENTS IN ‘YECORA’ WHEAT GRAIN
作者:
C. LABANAUSKAS,
L. STOLZY,
R. LUXMOORE,
期刊:
Soil Science
(OVID Available online 1975)
卷期:
Volume 120,
issue 6
页码: 450-454
ISSN:0038-075X
年代: 1975
出版商: OVID
数据来源: OVID
摘要:
This greenhouse experiment was conducted to evaluate the soil temperature and soil aeration effects during the wheat grain filling stage on the yield of grain and concentrations and total amounts of nutrients in the grain.Plants grown at 25°C soil temperature yielded lower amounts of grain per pot than those plants grown in 15°C and 5°C soil temperatures. Although the concentrations of most of the determined nutrients in the grain from plants grown at 25°C soil temperatures were higher than those found in the grain from plants grown at 5°C and 15°C soil temperatures, the total amounts of nutrients per pot found in the grain of plants grown at the 25°C soil temperature were lower than in the grain per pot of plants grown at 5° and 15°C soil temperatures.Reduced aeration to wheat plant roots for 30 days during the grain filling stage by flooding or supplying N2to the roots of the plants reduced the amount of grain produced per pot and also the total amounts of nutrients in the grain as compared to the yield and amounts of nutrients found in the grain from plants grown at the adequate supply level of soil aeration. The concentrations of nutrients in the grain were not markedly influenced by reduced soil-aeration during the grain filling stage.The concentrations of N, P, K, and Na, in grain from plants grown under reduced soil aeration conditions and 25°C soil temperature, were higher than those concentrations in grain from plants grown at the lower soil temperatures. In the presence of an adequate soil aeration, the differences in soil temperature did not influence nutrient concentrations in the grain.
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