Abstract
An experiment was conducted during rainy (kharif) season 2003 and 2004 at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]. The incidence of major pod-borer H. armigera varied temporally across cropping systems and significant fluctuation was noticed even at peak level of population (13-16 weeks after sowing). Intercropping also caused significant variation in pod and grain damage by pod-borers Maruca vitrata (Geyer), Exelastis atomosa (Walsingham) and Melanagromyza obtusa (Malloch). The intercrops, viz sorghum (Sorghum bicolor L.), groundnut (Arachis hypogaea L.) and blackgram (Vigna mungo (L.) Hepper) reduced the pod damage by H. armigera, M. vitrata, and M. obtusa significantly. The grain damage by lepidopteran borers was less in pigeonpea + sorghum (l5.15%), pigeonpea + groundnut (22.26%) and pigeonpea + blackgram (20.49%) intercropping systems. These effective cropping systems registered highest pigeonpea equivalent yields that was in the range of 0.97-1.1 1 tonnes/ha. Further these systems were more efficient agronomically in terms of land equivalent ratio (1.04-1.31), aggressivity (1.03-1.49), competitive ratio (1.77-1.97) and relative crowding coefficient (4.08 - 9.59). Economic analysis showed these intercropping systems to be more profitable than the sole pigeonpea.
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Claims 13
Claim · model-written summary
The incidence of the major pod-borer Helicoverpa armigera in pigeonpea varied over time across cropping systems.
- Taxon
- pigeonpea
Cajanus cajane0 - Interactor
- H. armigera
_gusano_cogollero.png?width=60)
Helicoverpa armigerae1pest - Outcome
- incidence of major pod-borer H. armigerae1
- Qualifier
- varied temporally across cropping systemse1
- Setting
- Hyderabade0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_gusano_cogollero.png?width=500)
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e1“The incidence of major pod-borer H. armigera varied temporally across cropping systems”
Claim · model-written summary
Pigeonpea intercropped with sorghum reduced pod damage by H. armigera significantly.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- sorghum (Sorghum bicolor L.)e3
- Interactor
- H. armigeraHelicoverpa armigerae3pest
- Second interactor
- M. vitrata
Maruca vitratae3pest - Outcome
- pod damage by H. armigerae3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e3“The intercrops, viz sorghum (Sorghum bicolor L.), groundnut (Arachis hypogaea L.) and blackgram (Vigna mungo (L.) Hepper) reduced the pod damage by H. armigera, M. vitrata, and M. obtusa significantly”
Claim · model-written summary
Pigeonpea intercropped with groundnut reduced pod damage by H. armigera significantly.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- groundnut (Arachis hypogaea L.)e3
- Interactor
- H. armigeraHelicoverpa armigerae3pest
- Second interactor
- M. vitrataMaruca vitratae3pest
- Outcome
- pod damage by H. armigerae3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e3“The intercrops, viz sorghum (Sorghum bicolor L.), groundnut (Arachis hypogaea L.) and blackgram (Vigna mungo (L.) Hepper) reduced the pod damage by H. armigera, M. vitrata, and M. obtusa significantly”
Claim · model-written summary
Pigeonpea intercropped with blackgram reduced pod damage by H. armigera significantly.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- blackgram (Vigna mungo (L.) Hepper)e3
- Interactor
- H. armigeraHelicoverpa armigerae3pest
- Second interactor
- M. vitrataMaruca vitratae3pest
- Outcome
- pod damage by H. armigerae3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e3“The intercrops, viz sorghum (Sorghum bicolor L.), groundnut (Arachis hypogaea L.) and blackgram (Vigna mungo (L.) Hepper) reduced the pod damage by H. armigera, M. vitrata, and M. obtusa significantly”
Claim · model-written summary
Grain damage by lepidopteran borers was lower in pigeonpea + sorghum (l5.15%).
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- pigeonpea + sorghume4
- Interactor
- lepidopteran borerse4pest
- Outcome
- grain damage by lepidopteran borerse4
- Direction
- lesse4
- Value
- l5.15%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e4“The grain damage by lepidopteran borers was less in pigeonpea + sorghum (l5.15%), pigeonpea + groundnut (22.26%) and pigeonpea + blackgram (20.49%) intercropping systems”
Claim · model-written summary
Grain damage by lepidopteran borers was lower in pigeonpea + groundnut (22.26%).
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- pigeonpea + groundnute4
- Interactor
- lepidopteran borerse4pest
- Outcome
- grain damage by lepidopteran borerse4
- Direction
- lesse4
- Value
- 22.26%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e4“The grain damage by lepidopteran borers was less in pigeonpea + sorghum (l5.15%), pigeonpea + groundnut (22.26%) and pigeonpea + blackgram (20.49%) intercropping systems”
Claim · model-written summary
Grain damage by lepidopteran borers was lower in pigeonpea + blackgram (20.49%).
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- pigeonpea + blackgrame4
- Interactor
- lepidopteran borerse4pest
- Outcome
- grain damage by lepidopteran borerse4
- Direction
- lesse4
- Value
- 20.49%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e4“The grain damage by lepidopteran borers was less in pigeonpea + sorghum (l5.15%), pigeonpea + groundnut (22.26%) and pigeonpea + blackgram (20.49%) intercropping systems”
Claim · model-written summary
The effective intercropping systems gave the highest pigeonpea equivalent yields, in the range of 0.97-1.1 1 tonnes/ha.
- Taxon
- pigeonpeaCajanus cajane5
- Outcome
- pigeonpea equivalent yieldse5
- Direction
- higheste5
- Value
- 0.97-1.1 1 tonnes/hae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“These effective cropping systems registered highest pigeonpea equivalent yields that was in the range of 0.97-1.1 1 tonnes/ha”
Claim · model-written summary
The intercropping systems had a land equivalent ratio of 1.04-1.31.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- land equivalent ratioe6
- Value
- 1.04-1.31e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e6“land equivalent ratio (1.04-1.31)”
Claim · model-written summary
The intercropping systems had an aggressivity of 1.03-1.49.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- aggressivitye7
- Value
- 1.03-1.49e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e7“aggressivity (1.03-1.49)”
Claim · model-written summary
The intercropping systems had a competitive ratio of 1.77-1.97.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- competitive ratioe2
- Value
- 1.77-1.97e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e2“competitive ratio (1.77-1.97)”
Claim · model-written summary
The intercropping systems had a relative crowding coefficient of 4.08 - 9.59.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- relative crowding coefficiente3
- Value
- 4.08 - 9.59e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Hyderabad to study the impact of crop -crop diversity on incidence of pod-borer [Helicoverpa armigera (Hubner)] on pigeonpea [Cajanus cajan (L.) Millsp]”
e3“relative crowding coefficient (4.08 - 9.59)”
Claim · model-written summary
The intercropping systems were more profitable than sole pigeonpea.
- Taxon
- pigeonpeaCajanus cajane4
- Treatment
- these intercropping systemse4
- Outcome
- profitablee4
- Direction
- moree4
- Comparator
- sole pigeonpeae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Economic analysis showed these intercropping systems to be more profitable than the sole pigeonpea”
The same questions in other papers
Vigna mungo · pest · Cajanus cajan (pigeon pea)Results agree
2 papers in the same direction as this paper
- positive
- positive
Sorghum · pest · Cajanus cajan (pigeon pea)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →intercropping · yield · Cajanus cajan (pigeon pea)Results differ
93 papers in the same direction as this paper · 22 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
113 papers more in this group
See all 117 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.