Abstract
Crop productivity may be increased by manipulating management practices that enhance resource capture and utilisation during yield formation. This study aimed at assessing the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars at Thohoyandou, South Africa in winter 2011 and 2012. Nodulation was determined at flowering, crop biomass and grain yield were determined at harvest maturity, intercepted total radiation was determined by measuring photosynthetically active radiation above and below the crop canopy at 7-days intervals using an AccuPAR ceptometer, and radiation use efficiency was calculated as ratio of yield to intercepted total radiation. Number and weight of nodules per plant were greater with inoculation compared with the control. There were no significant differences in crop biomass, grain yield, harvest index, intercepted total radiation and radiation use efficiency between Rhizobium inoculation and the non-inoculated control. The low yield and non-significant effect of Rhizobium inoculation suggest that (i) the productivity of chickpea was probably constrained by factors other than nitrogen deficiency; or (ii) there was no difference in nitrogen fixation between the inoculated and non-inoculated treatments. However, further field trials should be conducted, over several seasons, before any definite conclusions can be drawn.
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Claims 5
Claim · model-written summary
Rhizobium inoculation increased the number and weight of nodules per chickpea plant compared with the control.
- Taxon
- chickpea
Cicer arietinume2 - Organ / stage
- nodulese1
- Treatment
- Rhizobium inoculatione2
- Outcome
- Number and weight of nodules per plante1
- Direction
- greatere1
- Comparator
- controle1
- Setting
- Thohoyandou, South Africae3
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Number and weight of nodules per plant were greater with inoculation compared with the control”
e2“the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars”
e3“at Thohoyandou, South Africa in winter 2011 and 2012”
Claim · model-written summary
Rhizobium inoculation did not significantly change crop biomass, grain yield or harvest index of chickpea compared with the non-inoculated control.
- Taxon
- chickpeaCicer arietinume2
- Treatment
- Rhizobium inoculatione4
- Outcome
- crop biomass, grain yield, harvest indexe4
- Direction
- no significant differencese4
- Comparator
- non-inoculated controle4
- Setting
- Thohoyandou, South Africae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“There were no significant differences in crop biomass, grain yield, harvest index, intercepted total radiation and radiation use efficiency between Rhizobium inoculation and the non-inoculated control”
e2“the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars”
e3“at Thohoyandou, South Africa in winter 2011 and 2012”
Claim · model-written summary
Rhizobium inoculation did not significantly change intercepted total radiation or radiation use efficiency of chickpea compared with the non-inoculated control.
- Taxon
- chickpeaCicer arietinume2
- Treatment
- Rhizobium inoculatione4
- Outcome
- intercepted total radiation and radiation use efficiencye4
- Direction
- no significant differencese4
- Comparator
- non-inoculated controle4
- Setting
- Thohoyandou, South Africae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“There were no significant differences in crop biomass, grain yield, harvest index, intercepted total radiation and radiation use efficiency between Rhizobium inoculation and the non-inoculated control”
e2“the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars”
e3“at Thohoyandou, South Africa in winter 2011 and 2012”
Claim · model-written summary
The authors suggest chickpea productivity was probably constrained by factors other than nitrogen deficiency.
- Taxon
- chickpeaCicer arietinume5
- Outcome
- productivitye5
- Qualifier
- constrained by factors other than nitrogen deficiencye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The low yield and non-significant effect of Rhizobium inoculation suggest that (i) the productivity of chickpea was probably constrained by factors other than nitrogen deficiency”
e2“the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars”
Claim · model-written summary
The authors recommend further field trials over several seasons before definite conclusions.
- Taxon
- chickpeaCicer arietinume2
- Outcome
- further field trials should be conductede6
- Qualifier
- over several seasonse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“further field trials should be conducted, over several seasons, before any definite conclusions can be drawn”
e2“the effect of Rhizobium inoculation on growth, yield and radiation use of two chickpea cultivars”
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