Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching

Seven field trials at four research sites were carried out to study the effect of incorporation time of different plant materials on soil mineral N content during two successive seasons. Annual hairy vetch (Vicia villosa Roth), red clover (Trifolium pratense L.), westerwold ryegrass (Lolium multiflo...

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Main Authors: H. KÄNKÄNEN, A. KANGAS, T. MELA
Format: Article
Language:English
Published: Scientific Agricultural Society of Finland 2008-12-01
Series:Agricultural and Food Science
Online Access:https://journal.fi/afs/article/view/5613
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author H. KÄNKÄNEN
A. KANGAS
T. MELA
author_facet H. KÄNKÄNEN
A. KANGAS
T. MELA
author_sort H. KÄNKÄNEN
collection DOAJ
description Seven field trials at four research sites were carried out to study the effect of incorporation time of different plant materials on soil mineral N content during two successive seasons. Annual hairy vetch (Vicia villosa Roth), red clover (Trifolium pratense L.), westerwold ryegrass (Lolium multiflorum Lam. var. westerwoldicum) and straw residues of N-fertilized spring barley (Hordeum vulgare) were incorporated into the soil by ploughing in early September, late October and the following May, and by reduced tillage in May. Delaying incorporation of the green manure crop in autumn lessened the risk of N leaching. The higher the crop N and soil NO3-N content, the greater the risk of leaching. Incorporation in the following spring, which lessened the risk of N leaching as compared with early autumn ploughing, often had an adverse effect on the growth of the succeeding crop. After spring barley, the NO3-N content of the soil tended to be high, but the timing of incorporation did not have a marked effect on soil N. With exceptionally high soil mineral N content, N leaching was best inhibited by growing westerwold ryegrass in the first experimental year. ;
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spelling doaj.art-08ab86a4a7af4484a725b734edfbc9712022-12-22T01:41:20ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18952008-12-0175-6Timing incorporation of different green manure crops to minimize the risk of nitrogen leachingH. KÄNKÄNENA. KANGAST. MELASeven field trials at four research sites were carried out to study the effect of incorporation time of different plant materials on soil mineral N content during two successive seasons. Annual hairy vetch (Vicia villosa Roth), red clover (Trifolium pratense L.), westerwold ryegrass (Lolium multiflorum Lam. var. westerwoldicum) and straw residues of N-fertilized spring barley (Hordeum vulgare) were incorporated into the soil by ploughing in early September, late October and the following May, and by reduced tillage in May. Delaying incorporation of the green manure crop in autumn lessened the risk of N leaching. The higher the crop N and soil NO3-N content, the greater the risk of leaching. Incorporation in the following spring, which lessened the risk of N leaching as compared with early autumn ploughing, often had an adverse effect on the growth of the succeeding crop. After spring barley, the NO3-N content of the soil tended to be high, but the timing of incorporation did not have a marked effect on soil N. With exceptionally high soil mineral N content, N leaching was best inhibited by growing westerwold ryegrass in the first experimental year. ;https://journal.fi/afs/article/view/5613
spellingShingle H. KÄNKÄNEN
A. KANGAS
T. MELA
Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
Agricultural and Food Science
title Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
title_full Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
title_fullStr Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
title_full_unstemmed Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
title_short Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
title_sort timing incorporation of different green manure crops to minimize the risk of nitrogen leaching
url https://journal.fi/afs/article/view/5613
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AT tmela timingincorporationofdifferentgreenmanurecropstominimizetheriskofnitrogenleaching