Abstract
Cover crops can determine positive benefits on soil fertility and rice productivity, although scant attention has been devoted to evaluating the effects of hairy vetch (Vicia villosa Roth) and the incorporation of rice straw with different N fertilization levels on soil N and P availability and crop yields in temperate cropping systems characterized by poorly developed soils. In this study, the effects of cover crops grown before rice in a temperate mono-cropping system (NW Italy) on: (i) crop yields and yield components; (ii) apparent N fertilizer recovery and optimal level of N fertilization with hairy vetch; and (iii) temporal variation of soil available N and P forms during the hairy vetch growth and rice cropping season, have been investigated. The cultivation and incorporation of hairy vetch in the rice cropping system increased grain productivity by 12%, while reducing N mineral fertilization requirements by 33%. Combined with the incorporation of crop residues, hairy vetch provided a N and P input of 178 and 18 kg ha−1, respectively, representing a readily available source for plant uptake over the whole rice cropping season, particularly under anaerobic conditions. This results in a better temporal synchronization of soil N and P availability with crop nutrient demand, leading to a better rice grain productivity and quality performance.
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Claims 5
Claim · model-written summary
Hairy vetch cultivation and incorporation increased rice grain productivity by 12%.
- Taxon
- rice
Oryza sativae0 - Treatment
- cultivation and incorporation of hairy vetche0
- Outcome
- grain productivitye0
- Direction
- increasede0
- Value
- 12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivation and incorporation of hairy vetch in the rice cropping system increased grain productivity by 12%”
Claim · model-written summary
Hairy vetch incorporation reduced mineral nitrogen fertilization requirements by 33%.
Not reportedTaxon
Verbatim
e0“while reducing N mineral fertilization requirements by 33%”
Claim · model-written summary
Hairy vetch with crop residues supplied 178 kg ha−1 nitrogen.
Not reportedTaxon
Verbatim
e0“Combined with the incorporation of crop residues, hairy vetch provided a N and P input of 178 and 18 kg ha−1, respectively”
Claim · model-written summary
The incorporation better synchronized soil N and P availability with rice crop demand.
- Outcome
- temporal synchronization of soil N and P availability with crop nutrient demande0
- Direction
- bettere0
Not reportedTaxon
Verbatim
e0“This results in a better temporal synchronization of soil N and P availability with crop nutrient demand”
Claim · model-written summary
The treatment improved rice grain productivity and quality performance.
- Taxon
- riceOryza sativae0
- Outcome
- grain productivity and quality performancee0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to a better rice grain productivity and quality performance”
The same questions in other papers
Vicia villosa · yield · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- negative
6 papers more in this group
See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.