Abstract
Performance of Three Varieties of Cassava (Manihot esculenta Crantz) Grown in Association with Stylosanthes guianensis (Aublet) Swartz in the Conditions of the Batéké Plateau (City-Province of Kinshasa, DRC). In order to develop a system of direct seeding in a permanent vegetative cover of Stylosanthes guianensis (Aublet) Swartz adapted to the growing conditions of the Batéké plateau, the behavior of improved cassava varieties ZIZILA, TME 419 and BUTAMU was evaluated in sole cropping and in intercropping with Stylo. The trial was conducted from October 2009 to August 2011 in two sites representative of the soil diversity on the plateau. The results demonstrate the existence of a strong competition between the associated crops during the 1st year of cultivation. Yield losses recorded compared to situations of sole cropping ranged on average between 22,6-35% for the biomass of Stylo cut at 8 months in the two trial sites, and amounted to about 50% for cassava harvested at 12 months. Delaying the harvest of cassava to 16 months, with a cutting of the Stylo canopy to form a mulch at the end of the long dry season (8 months after planting), has permitted cassava to reach yields equivalent to the situation of sole cropping. The average yields of fresh cassava roots were significantly lower in the site of Neema (9.7 t.ha-1 at 12 months in sole cropping) compared to those recorded in the site of The Way (12.8 t.ha-1 at 12 months in sole cropping). In each site, no significant difference could be detected for the yields of the compared cassava clones cultivated in pure stand. When harvesting cassava at 12 months, the production of Stylo dry biomass was equivalent at 20 months regardless of the installation mode (sole cropping or intercropping with cassava). The trial did not permit to clearly separate the cassava varieties for their intercropping ability with Stylo. The intercropping of Stylo with cassava is a cost effective method to install a permanent cover in which it is possible to make direct seeding of other crops.
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Claims 9
Claim · model-written summary
A strong competition between the associated cassava and Stylo crops was demonstrated during the first year of cultivation.
Not reportedTaxon
Verbatim
e1“The results demonstrate the existence of a strong competition between the associated crops during the 1st year of cultivation”
Claim · model-written summary
Stylo biomass cut at 8 months showed yield losses averaging 22.6-35% in intercropping compared with sole cropping in the two trial sites.
- Taxon
- Stylo
.jpg?width=60)
Stylosanthes guianensise1 - Treatment
- intercropping with cassavae2
- Outcome
- biomass of Stylo cut at 8 monthse1
- Direction
- lossese1
- Value
- 22,6-35%e1
- Comparator
- sole croppinge1
- Setting
- the two trial sitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“Yield losses recorded compared to situations of sole cropping ranged on average between 22,6-35% for the biomass of Stylo cut at 8 months in the two trial sites, and amounted to about 50% for cassava harvested at 12 months”
e2“intercropping with cassava”
Claim · model-written summary
Cassava harvested at 12 months showed yield losses of about 50% in intercropping with Stylo compared with sole cropping.
- Taxon
- cassava
Manihot esculentae1 - Treatment
- intercropping with Styloe2
- Outcome
- Yield lossese1
- Direction
- lossese1
- Value
- about 50%e1
- Comparator
- sole croppinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Yield losses recorded compared to situations of sole cropping ranged on average between 22,6-35% for the biomass of Stylo cut at 8 months in the two trial sites, and amounted to about 50% for cassava harvested at 12 months”
e2“intercropping with Stylo”
Claim · model-written summary
Delaying cassava harvest to 16 months, with Stylo cut to form a mulch at 8 months after planting, allowed intercropped cassava to reach yields equivalent to sole cropping.
- Taxon
- cassavaManihot esculentae1
- Treatment
- Delaying the harvest of cassava to 16 monthse1
- Outcome
- yieldse1
- Direction
- equivalente1
- Qualifier
- cutting of the Stylo canopy to form a mulche1
- Comparator
- sole croppinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Delaying the harvest of cassava to 16 months, with a cutting of the Stylo canopy to form a mulch at the end of the long dry season (8 months after planting), has permitted cassava to reach yields equivalent to the situation of sole cropping”
Claim · model-written summary
Average fresh cassava root yields were significantly lower at the Neema site (9.7 t/ha at 12 months in sole cropping) than at The Way site (12.8 t/ha).
- Taxon
- cassavaManihot esculentae1
- Outcome
- average yields of fresh cassava rootse1
- Direction
- lowere1
- Value
- 9.7 t.ha-1e1
- Comparator
- the site of The Waye1
- Setting
- the site of Neemae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The average yields of fresh cassava roots were significantly lower in the site of Neema (9.7 t.ha-1 at 12 months in sole cropping) compared to those recorded in the site of The Way (12.8 t.ha-1 at 12 months in sole cropping)”
Claim · model-written summary
No significant difference was detected in yields among the compared cassava clones grown in pure stand at each site.
- Taxon
- cassavaManihot esculentae1
- Material
- compared cassava clonese1
- Outcome
- yieldse1
- Direction
- no significant differencee1
- Qualifier
- pure stande1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In each site, no significant difference could be detected for the yields of the compared cassava clones cultivated in pure stand”
Claim · model-written summary
When cassava was harvested at 12 months, Stylo dry biomass at 20 months was equivalent regardless of sole cropping or intercropping with cassava.
- Taxon
- StyloStylosanthes guianensise1
- Treatment
- intercropping with cassavae1
- Outcome
- production of Stylo dry biomasse1
- Direction
- equivalente1
- Comparator
- sole croppinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“When harvesting cassava at 12 months, the production of Stylo dry biomass was equivalent at 20 months regardless of the installation mode (sole cropping or intercropping with cassava)”
Claim · model-written summary
The trial did not clearly separate the cassava varieties for their intercropping ability with Stylo.
- Taxon
- cassavaManihot esculentae1
- Outcome
- intercropping ability with Styloe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The trial did not permit to clearly separate the cassava varieties for their intercropping ability with Stylo”
Claim · model-written summary
Intercropping Stylo with cassava is a cost-effective method to install a permanent cover in which direct seeding of other crops is possible.
- Taxon
- StyloStylosanthes guianensise1
- Outcome
- cost effective method to install a permanent covere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The intercropping of Stylo with cassava is a cost effective method to install a permanent cover in which it is possible to make direct seeding of other crops”
The same questions in other papers
Stylosanthes guianensis · yield · Manihot esculenta (cassava)Positive and negative results
1 in the opposite direction
- positive
intercropping · yield · Manihot esculenta (cassava)Results differ
29 papers in the same direction as this paper · 48 in the opposite direction
- positive
- positive
- positive
74 papers more in this group
See all 78 papers →intercropping · yield · Stylosanthes guianensis (stylo)Positive and negative results
1 reporting no difference from an alternative
- 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.