Abstract
The demonstrational short-term on-farm field experiment (agricultural farm Gruduva, Šakiai reg., Lithuania, 2003-2004) and precise long-term field experiment (Aleksandras Stulginskis University, Research Station, 2009-2010) were carried out on silty loam soils. The aim of experiments was to evaluate impact of ploughless soil tillage on some soil physical properties and winter wheat productivity parameters. Three different soil tillage systems were investigated – conventional (CT, deep mouldboard ploughing), reduced (RT, disc harrowing) and zero (ZT, direct drilling). Short-term (3 years) ploughless soil tillage had higher influence on soil physical properties than in steady conditions of long-term (10 years) practice. The amount of microstructure was significantly less in RT and ZT plots; amount of water-stable soil aggregates and water content were significantly higher in ZT plots than in CT. In short-term experiment the compaction of ZT soil was least because of higher soil moisture (due to residues cover on soil surface) content and more favourable conditions of soil structure. In long-term experiment RT and ZT data of soil compaction showed nearly the same results, however, CT soil was more friable. Higher coverage of soil surface with oilseed rape plant residues (up to 68%) influenced on sowing quality decrease, that mostly affected significantly lower winter wheat seed germination and formation of productive stems in both experiments. In condition of less density crop, winter wheat formed higher mass of grains and influenced on mostly higher grain yields in RT and ZT (r2004= 0.953; r2010= 0.691).
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Claims 4
Claim · model-written summary
Oilseed rape residues reduced winter wheat seed germination.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- oilseed rape plant residuese0
- Outcome
- winter wheat seed germinatione0
- Direction
- lowere0
- Value
- up to 68%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher coverage of soil surface with oilseed rape plant residues (up to 68%) influenced on sowing quality decrease, that mostly affected significantly lower winter wheat seed germination and formation of productive stems in both experiments”
Claim · model-written summary
Oilseed rape residues reduced formation of productive winter wheat stems.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- oilseed rape plant residuese0
- Outcome
- formation of productive stemse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher coverage of soil surface with oilseed rape plant residues (up to 68%) influenced on sowing quality decrease, that mostly affected significantly lower winter wheat seed germination and formation of productive stems in both experiments”
Claim · model-written summary
Lower density winter wheat crops formed greater grain mass.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- mass of grainse0
- Direction
- highere0
- Setting
- less density crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In condition of less density crop, winter wheat formed higher mass of grains”
Claim · model-written summary
Reduced and zero tillage had mostly higher winter wheat grain yields in less dense crops.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- RT and ZTe0
- Outcome
- grain yieldse0
- Direction
- highere0
- Qualifier
- less density crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In condition of less density crop, winter wheat formed higher mass of grains and influenced on mostly higher grain yields in RT and ZT (r2004= 0.953; r2010= 0.691)”
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