Abstract
This study evaluated effects of oats (Avena sativa L.) and grazing vetch (Vicia dasycarpa L.), bicultures, in rotation with summer maize (Zea mays), on soil organic matter fractions and activities of selected enzymes. The trial was initiated in April 2009. The treatments were 100% oat, 100% vetch, 90% oat + 10% vetch, 70% oat + 30% vetch, 50% oat + 50% vetch, and weedy fallow, in a randomized complete block design (RCBD) with three replications. Soil samples were collected in October 2011, from the 0–5 and 5–20 cm depths, and analyzed for total carbon (C), particulate organic matter (POM), water-soluble carbon (WSC), microbial biomass carbon (MBC) and activities of selected enzymes. Total C was higher in bicultures, particularly the 70% oat + 30% vetch, and 100% vetch than in 100% oats and the control. The greatest MBC, WSC, dehydrogenase, aryl-sulphatase and phosphomonoesterase activities were in the 70% oat + 30% vetch biculture, and declined where the proportion of oats or vetch was higher. Increasing proportions of vetch resulted in increases in urease and β-glucosidase activity and decrease in POM. The findings suggested that, in addition to increased maize yields, bicultures of oats and vetch also have synergistic effects on soil carbon pools and enzyme activities, with potential benefits of improved soil physical condition and nutrient cycling compared with the individual crops, under warm temperate conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Total soil carbon was higher in bicultures and pure vetch than pure oats and control.
- Treatment
- 70% oat + 30% vetche0
- Outcome
- Total Ce0
- Direction
- highere0
- Comparator
- 100% oats and the controle0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total C was higher in bicultures, particularly the 70% oat + 30% vetch, and 100% vetch than in 100% oats and the control”
e1“summer maize (Zea mays)”
Claim · model-written summary
The 70% oat plus 30% vetch mixture gave the greatest microbial and water soluble carbon.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest MBC, WSC, dehydrogenase, aryl-sulphatase and phosphomonoesterase activities were in the 70% oat + 30% vetch biculture”
e1“summer maize (Zea mays)”
Claim · model-written summary
The 70% oat plus 30% vetch mixture gave the greatest selected enzyme activities.
- Treatment
- 70% oat + 30% vetch biculturee0
- Outcome
- dehydrogenase, aryl-sulphatase and phosphomonoesterase activitiese0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest MBC, WSC, dehydrogenase, aryl-sulphatase and phosphomonoesterase activities were in the 70% oat + 30% vetch biculture”
e1“summer maize (Zea mays)”
Claim · model-written summary
Increasing vetch proportion increased urease and β-glucosidase activity.
- Treatment
- Increasing proportions of vetche0
- Outcome
- urease and β-glucosidase activitye0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing proportions of vetch resulted in increases in urease and β-glucosidase activity”
e1“summer maize (Zea mays)”
Claim · model-written summary
Increasing vetch proportion decreased particulate organic matter.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing proportions of vetch resulted in increases in urease and β-glucosidase activity and decrease in POM”
e1“summer maize (Zea mays)”
Claim · model-written summary
The authors report increased maize yields with bicultures.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in addition to increased maize yields, bicultures of oats and vetch also have synergistic effects on soil carbon pools and enzyme activities”
Claim · model-written summary
Bicultures had synergistic effects on soil carbon pools and enzyme activities.
- Treatment
- bicultures of oats and vetche0
- Outcome
- soil carbon pools and enzyme activitiese0
- Comparator
- individual cropse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bicultures of oats and vetch also have synergistic effects on soil carbon pools and enzyme activities, with potential benefits of improved soil physical condition and nutrient cycling compared with the individual crops”
e1“summer maize (Zea mays)”
The same questions in other papers
Avena sativa · yield · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →Avena sativa · soil: biology · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
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.