Abstract
Field investigations were conducted during 2015 and 2016 kharif seasons at the experimental farm of ICAR, Nagaland Centre, Medziphema to study weed growth and nutrient uptake in organically managed rice and maize as affected by N management and live mulching with cowpea. The experiment was laid out in factorial RBD with two kharif crops viz., rice (C1) and maize (C2), two organic N management viz., vermicompost @ 2 t/ha (N1) and vermicompost @ 2.7 t/ha (N2) and two mulches viz., control (No mulching) (L1) and live mulching with cowpea (L2). The dominant weed species observed were Cynodon dactylon, Digitaria setigera, Ageratum conyzoides, Amaranthus viridis, Cyperus iria and Cyperus rotundus. Weed density, dry weight and NPK uptake was found to be significantly lower in maize compared to rice during both years. Weed growth and NPK uptake was also found to be significantly higher with application of vermicompost @ 2.7 t/ha (N2) compared to 2 t/ha (N1) whereas, significantly lower weed growth as well as NPK uptake was also recorded with cowpea live mulch (L2) as compared to no mulching (L1). Cowpea live mulch (L2) with application of vermicompost @ 2 t/ha (N1) was found to record significantly lower NPK uptake by weeds in both crops. Yield and yield attributes of rice and maize were observed to be higher under cowpea live mulch with application of vermicompost @ 2.7 t/ha (N2).
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 6
Claim · model-written summary
Cynodon dactylon, Digitaria setigera and Ageratum conyzoides were among the dominant weeds.
- Taxon
- rice and maize
Oryza sativa
Zea mayst0 - Interactor
- Cynodon dactylon
Cynodon dactylone0weed - Outcome
- dominant weed speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dominant weed species observed were Cynodon dactylon, Digitaria setigera, Ageratum conyzoides, Amaranthus viridis, Cyperus iria and Cyperus rotundus.”
t0“rice and maize”
Claim · model-written summary
Weed density, dry weight and NPK uptake were significantly lower in maize than rice in both years.
Not reportedInteractorInteractor role
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed density, dry weight and NPK uptake was found to be significantly lower in maize compared to rice during both years.”
Claim · model-written summary
Higher vermicompost rate significantly increased weed growth and NPK uptake.
- Taxon
- rice and maizeOryza sativaZea mayst0
- Treatment
- vermicompost @ 2.7 t/hae0
- Outcome
- Weed growth and NPK uptakee0
- Direction
- highere0
- Comparator
- 2 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed growth and NPK uptake was also found to be significantly higher with application of vermicompost @ 2.7 t/ha (N2) compared to 2 t/ha (N1)”
t0“rice and maize”
Claim · model-written summary
Cowpea live mulch significantly lowered weed growth and NPK uptake relative to no mulch.
- Taxon
- rice and maizeOryza sativaZea mayst0
- Treatment
- cowpea live mulche0
- Interactor
- cowpea
Vigna unguiculatae0other - Outcome
- weed growth as well as NPK uptakee0
- Direction
- lowere0
- Comparator
- no mulchinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly lower weed growth as well as NPK uptake was also recorded with cowpea live mulch (L2) as compared to no mulching (L1)”
t0“rice and maize”
Claim · model-written summary
Cowpea mulch plus 2 t/ha vermicompost significantly lowered weed NPK uptake in both crops.
- Taxon
- rice and maizeOryza sativaZea mayst0
- Treatment
- Cowpea live mulch (L2) with application of vermicompost @ 2 t/ha (N1)e0
- Interactor
- cowpeaVigna unguiculatae0other
- Outcome
- NPK uptake by weedse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea live mulch (L2) with application of vermicompost @ 2 t/ha (N1) was found to record significantly lower NPK uptake by weeds in both crops.”
t0“rice and maize”
Claim · model-written summary
Rice and maize yield and yield attributes were higher under cowpea mulch with 2.7 t/ha vermicompost.
- Taxon
- rice and maizeOryza sativaZea mayse0
- Treatment
- cowpea live mulch with application of vermicompost @ 2.7 t/hae0
- Interactor
- cowpeaVigna unguiculatae0other
- Outcome
- Yield and yield attributese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and yield attributes of rice and maize were observed to be higher under cowpea live mulch with application of vermicompost @ 2.7 t/ha (N2).”
The same questions in other papers
Vigna unguiculata · yield · Oryza sativa (rice)Positive and negative results
49 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
49 papers more in this group
See all 53 papers →Vigna unguiculata · yield · Zea mays (maize)Positive and negative results
106 papers in the same direction as this paper · 16 in the opposite direction · 4 reporting no difference from an alternative
- positive
- positive
- negative
123 papers more in this group
See all 127 papers →Vigna unguiculata · weed · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
- positive
Vigna unguiculata · weed · Zea mays (maize)Results agree
26 papers in the same direction as this paper
- positive
- positive
- positive
23 papers more in this group
See all 27 papers →mulching · yield · Oryza sativa (rice)Results differ
105 papers in the same direction as this paper · 17 in the opposite direction · 3 reporting no difference from an alternative
- positive
- negative
- negative
122 papers more in this group
See all 126 papers →mulching · weed · Oryza sativa (rice)Positive and negative results
30 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
29 papers more in this group
See all 33 papers →mulching · weed · Zea mays (maize)Positive and negative results
47 papers in the same direction as this paper · 5 in the opposite direction · 2 reporting no difference from an alternative
- positive
- negative
- no effect
51 papers more in this group
See all 55 papers →fertilization · weed · Zea mays (maize)Positive and negative results
33 papers in the same direction as this paper · 26 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- negative
58 papers more in this group
See all 62 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.