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For the comparison of nitrogen fertilizer in the course of winter rye vegetation
Titel:
For the comparison of nitrogen fertilizer in the course of winter rye vegetation
Auteur:
Peschke, Heinz Schmidt, Stefanie
Verschenen in:
Archives of agronomy & soil science
Paginering:
Jaargang 50 (2004) nr. 2 pagina's 167-180
Jaar:
2004-04
Inhoud:
In the Static Nutrient Deficiency Trial Thyrow (weak silty sand) 3 trial blocks were selected: without fertilizer, NPK + lime and NPK + lime + manure. They differ in nutrient content and graduate themselves considerably in the content of organic soil substance. In the field plots there are micro plots with the nitrogen stages 60, 120 and 160 kg ha- 1, as the 15N marked ammoniumsulfat becomes incorporated. The nitrogen fertilizer of the first input only migrated 0 - 10 cm deep into the layer of the ground. Next to the plant N-intake it is defeated considerably by an apparent nitrogen immobilisation in the soil. The second nitrogen input is directly received by the plant and is affected by a nitrogen establishment; as it is a mineral nitrogen, also in the upper crumb lay, hard to prove. Against that the soil-born nitrogen is distributed above the depth, here until 60 cm, and becomes increasingly assimilated in the second vegetation half by rye. The yield increase during the vegetation, corn and straw yield for the harvest time follows the soil quality (trial blocks) as well as the actual fertilizer use. The nitrogen from the fertilizer pool corresponds a polynom 2, degrees, while the nitrogen in the soil is subjected in the nitrogen intake of a linear function. For the harvest the nitrogen uptake (grain and straw) form both, soil and fertilizer-N, in the variant NPK + lime + manure is the biggest.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 109 van 204 gevonden artikelen
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