Abstract
An experiment was laid down in the greenhouse to determine the distribution of weed seeds at different soil depths and period of cultivation on the distribution of weed seed bank in the soil profile in Muzarabani. Soil samples from different depth levels (0-10, 10.1-20, 20.1-30 cm) were collected soon after harvesting from three different sites namely Gutsa, Mufudzi and Muringazuva of Muzarabani district. The soil samples were put in trays in the greenhouse and watered after every two days to field capacity. Weed seedlings were identified, counted, recorded and discarded for a period of 3 months. Soil samples were disturbed every week to allow more germination of dormant weeds. Depth (P=0.000) and site (P=0.005) had highly significant effects on the total number of weeds that emerged from the soil samples. The 0-10 cm of the soil had the highest weed seedlings that emerged. There was an equal weed seed distribution in the 10-20 cm and the 20-30 cm of the soil. Gutsa had the largest seed bank and there was no significant difference in seed bank size between Mufudzi and Muringazuva. Some weed species were site specific, Senna obtusifolia was only found in Muringazuva and absent in other sites. Eleusine indica was found in Mufudzi and was absent in other sites.
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Claims 8
Claim · model-written summary
Depth significantly affected the number of emerging weeds.
- Taxon
- weedse0
- Outcome
- total number of weeds that emergede0
- Qualifier
- Depth (P=0.000)e0
- Setting
- soil samplese0
Not reportedDirection
Verbatim
e0“Depth (P=0.000) and site (P=0.005) had highly significant effects on the total number of weeds that emerged from the soil samples”
Claim · model-written summary
Site significantly affected the number of emerging weeds.
Not reportedDirection
Verbatim
e0“Depth (P=0.000) and site (P=0.005) had highly significant effects on the total number of weeds that emerged from the soil samples”
Claim · model-written summary
The 0-10 cm soil layer produced the most weed seedlings.
Verbatim
e0“The 0-10 cm of the soil had the highest weed seedlings that emerged”
Claim · model-written summary
Weed seeds were equally distributed between the 10-20 cm and 20-30 cm soil layers.
Verbatim
e0“There was an equal weed seed distribution in the 10-20 cm and the 20-30 cm of the soil”
Claim · model-written summary
Gutsa had the largest weed seed bank.
Verbatim
e0“Gutsa had the largest seed bank”
e1“distribution of weed seed bank”
Claim · model-written summary
Seed bank size did not differ significantly between Mufudzi and Muringazuva.
Verbatim
e0“there was no significant difference in seed bank size between Mufudzi and Muringazuva”
e1“weed seed bank”
Claim · model-written summary
Senna obtusifolia occurred only at Muringazuva.
- Taxon
- Senna obtusifolia
Senna obtusifoliae0 - Outcome
- only found in Muringazuva and absent in other sitese0
- Setting
- Muringazuvae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Senna obtusifolia was only found in Muringazuva and absent in other sites”
Claim · model-written summary
Eleusine indica occurred at Mufudzi and was absent elsewhere.
- Taxon
- Eleusine indica
Eleusine indicae0 - Outcome
- found in Mufudzi and was absent in other sitese0
- Setting
- Mufudzie0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eleusine indica was found in Mufudzi and was absent in other sites”