ISSN:
1573-5036
Keywords:
aeration
;
mineral composition
;
nutrient uptake
;
Secale cereale
;
winter rye
;
N
;
P
;
K
;
Ca
;
Mg
;
Na
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The influence of soil oxygen diffusion rate (ODR) on winter rye (Secale cereale cv Dańkowskie Nowe) growth, yield, and mineral composition was studied in the greenhouse. A range of soil ODR values was created by manipulating soil water tension and soil bulk density. The soil bulk densities used during the experiment were: 1.20, 1.35 and 1.50 Mg m-3. The soil water tensions used were 15–80 kPa (control), 2–5 kPa and 0 kPa (2–5 mm of water ponded on the soil surface). The 2–5 and 0 kPa water tensions were applied for 15 days beginning at 3 growth stages (stress I at two-three leaves, stress II at shooting, stress III at heading). Yield at full maturity decreased to as little as 30–50% of the controls when ODR dropped below 20 μg m-2 s-1. When soil hypoxia occurred early (2–3 leaves, or shooting), straw weight decreased for ODR〈20 μg m-2 s-1 and root potassium content increased for ODR below 10 μg m-2 s-1. The uptake of all measured macroelements was decreased at low oxygen availability. Oxygen diffusion rates of 〉30 μg m-2 s-1 were needed for adequate nutrient uptake.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00007882
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