Abstract
The influence of the number of seeds per clump upon germination of oryza sativa L., Gossypium hirsutum L., Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link was investigated on filter paper and in sand and clayey soil. The substrates did not affect the germination or the seeds of the crops of the weeds. Neighbour effects and interference were examined between rice and B. eruciformis and between cotton and E. colonum seeds sown at different densities and clumps in the clayey soil. Germination of seeds of crops was not affected by increasing density, while that of the weeds was affected by diversity and increasing density. The germination of seeds of crops was not affected by light. The weed seeds were light sensitive and only germinated on the surface of the soil, under a wide range of moisture levels. The implications of the results are discussed in relation to weed control in the Gezira.
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Claims 5
Claim · model-written summary
Substrates did not affect germination of crop or weed seeds.
Not reportedComparator
Verbatim
e0“oryza sativa L., Gossypium hirsutum L., Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link”
e1“The substrates did not affect the germination or the seeds of the crops of the weeds.”
Claim · model-written summary
Increasing seed density did not affect crop seed germination.
- Taxon
- oryza sativa L.e0
- Treatment
- increasing densitye1
- Outcome
- Germination of seeds of cropse1
- Direction
- not affectede1
Not reportedComparator
Verbatim
e0“oryza sativa L., Gossypium hirsutum L.”
e1“Germination of seeds of crops was not affected by increasing density”
Claim · model-written summary
Weed seed germination was affected by diversity and increasing density.
- Taxon
- Brachiaria eruciformis (Sm.) Griseb
Moorochloa eruciformise0 - Treatment
- increasing densitye1
- Outcome
- that of the weedse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link”
e1“that of the weeds was affected by diversity and increasing density”
Claim · model-written summary
Light did not affect crop seed germination.
Not reportedComparator
Verbatim
e0“oryza sativa L., Gossypium hirsutum L.”
e1“The germination of seeds of crops was not affected by light.”
Claim · model-written summary
Weed seeds were light sensitive and germinated only at the soil surface across a wide moisture range.
- Taxon
- Brachiaria eruciformis (Sm.) GrisebMoorochloa eruciformise0
- Outcome
- light sensitive and only germinated on the surface of the soile1
- Qualifier
- under a wide range of moisture levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link”
e1“The weed seeds were light sensitive and only germinated on the surface of the soil, under a wide range of moisture levels.”
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See all 95 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.