Abstract
Abstract The Brown Sands are a dominant soil group in South Guyana. They are coarse textured ‐ sand to sandy loam; highly leached; acid, and, although not naturally fertile, they appear suitable for large scale cultivation of groundnuts [ Arachis hypogoea (L.)]. Two experiments were conducted on these soils to determine the effect of fertilization and inoculation on crop performance. In the nitrogen × inoculum ( Rhizobium japonicum ) series, N did not influence yield. It caused a decrease in nodulation with the effect becoming more marked with constant cropping. Inoculum up to 226 g/27 kg seed increased yields but decreased nodulation only at the last of three plantings. Both Mg and fritted micronutrients had no effect on yields; these results were difficult to explain considering the highly leached nature of this soil.
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Claims 6
Claim · model-written summary
Nitrogen did not influence groundnut yield.
- Taxon
- groundnuts
Arachis hypogaeae1 - Treatment
- Ne0
- Interactor
- Rhizobium japonicume0symbiont
- Outcome
- yielde0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nitrogen × inoculum ( Rhizobium japonicum ) series, N did not influence yield.”
e1“groundnuts [ Arachis hypogoea (L.)]”
Claim · model-written summary
Nitrogen decreased nodulation, increasingly with constant cropping.
- Taxon
- groundnutsArachis hypogaeae2
- Treatment
- Ne1
- Interactor
- Rhizobium japonicume1symbiont
- Outcome
- nodulatione0
- Direction
- decreasee0
- Qualifier
- with constant croppinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It caused a decrease in nodulation with the effect becoming more marked with constant cropping.”
e1“In the nitrogen × inoculum ( Rhizobium japonicum ) series, N did not influence yield.”
e2“groundnuts [ Arachis hypogoea (L.)]”
Claim · model-written summary
Inoculum up to 226 g/27 kg seed increased groundnut yields.
- Taxon
- groundnutsArachis hypogaeae2
- Treatment
- Inoculum up to 226 g/27 kg seede0
- Interactor
- Rhizobium japonicume1symbiont
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculum up to 226 g/27 kg seed increased yields”
e1“Rhizobium japonicum”
e2“groundnuts [ Arachis hypogoea (L.)]”
Claim · model-written summary
Inoculum decreased groundnut nodulation only at the last of three plantings.
- Taxon
- groundnutsArachis hypogaeae2
- Treatment
- Inoculum up to 226 g/27 kg seede0
- Interactor
- Rhizobium japonicume1symbiont
- Outcome
- nodulatione0
- Direction
- decreasede0
- Qualifier
- only at the last of three plantingse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculum up to 226 g/27 kg seed increased yields but decreased nodulation only at the last of three plantings”
e1“Rhizobium japonicum”
e2“groundnuts [ Arachis hypogoea (L.)]”
Claim · model-written summary
Magnesium had no effect on groundnut yield.
- Taxon
- groundnutsArachis hypogaeae1
- Treatment
- Mge0
- Outcome
- yieldse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Mg and fritted micronutrients had no effect on yields”
e1“groundnuts [ Arachis hypogoea (L.)]”
Claim · model-written summary
Fritted micronutrients had no effect on groundnut yield.
- Taxon
- groundnutsArachis hypogaeae1
- Treatment
- fritted micronutrientse0
- Outcome
- yieldse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Mg and fritted micronutrients had no effect on yields”
e1“groundnuts [ Arachis hypogoea (L.)]”
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