Abstract
Enhancing soil fertility and reducing the devastative effect of weed competition in rice is increasingly important and critical for ensuring a sustainable increase in rice production and secure food supply. Field experiment was conducted at Bontanga in the Northern Region of Ghana to investigate the effect of soil amendments and weeding regimes on growth and yield of rice under different moisture sources. The experiment was a three-factor experiment laid in a split plot design with three replications. The factors were water source (irrigation and rainfed), four levels of soil amendments [no fertilizer (NF), poultry fertilizer (PF), mineral fertilizer (MF), cow dung (CD)] at the same N rate (60kg N ha-1) and four levels of weeding regime (weedy check (W1), weed free (W2), one hand weeding + twice herbicides application (W3) and twice hand weeding + one time herbicides spray (W4). Parameters measured were tiller count, weed biomass, weed control efficiency, grain yield and cost analysis. Results showed that water source, soil amendments and weeding regimes had influenced rice yield. Irrigation increased rice grain yield by 49% compared to rainfed. Application of CD, MF and PL at the same N quantity increased grain yield by 5.4, 28 and 8%, respectively compared to NF. Among weeding regime, weed free reduced weed density and biomass, this translated to greater tiller counts and increased grain yield. Weed interference in weedy check reduced grain yield by 48, 30 and 26% compared to W2, W3 and W4, respectively. Irrigation increased cost of production by 7%, however, cost:benefit ratio increased by 44% compared to rain fed conditions. Key words: Soil amendments, weed control, irrigation, rain fed, yield, rice.
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Claims 11
Claim · model-written summary
Irrigation increased rice grain yield by 49% over rainfed conditions.
- Taxon
- rice
Oryza sativae0 - Treatment
- Irrigatione0
- Outcome
- rice grain yielde0
- Direction
- increasede0
- Value
- 49%e0
- Comparator
- rainfede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased rice grain yield by 49% compared to rainfed.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Cow dung increased grain yield by 5.4% over no fertilizer.
- Taxon
- riceOryza sativat0
- Treatment
- CDe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 5.4e0
- Comparator
- NFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of CD, MF and PL at the same N quantity increased grain yield by 5.4, 28 and 8%, respectively compared to NF.”
e1“cow dung (CD)”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Mineral fertilizer increased grain yield by 28% over no fertilizer.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of CD, MF and PL at the same N quantity increased grain yield by 5.4, 28 and 8%, respectively compared to NF.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Poultry fertilizer increased grain yield by 8% over no fertilizer.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of CD, MF and PL at the same N quantity increased grain yield by 5.4, 28 and 8%, respectively compared to NF.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Weed-free management reduced weed density and biomass.
- Taxon
- riceOryza sativat0
- Treatment
- weed freee0
- Interactor
- weede0weed
- Outcome
- weed density and biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed free reduced weed density and biomass”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Weed-free management increased rice tiller counts and grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- weed freee0
- Interactor
- weede0weed
- Outcome
- tiller counts and increased grain yielde0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed free reduced weed density and biomass, this translated to greater tiller counts and increased grain yield.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Weed interference lowered grain yield by 48% compared with weed-free management.
- Taxon
- riceOryza sativat0
- Treatment
- weedy checke0
- Interactor
- Weede0weed
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 48e0
- Comparator
- W2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed interference in weedy check reduced grain yield by 48, 30 and 26% compared to W2, W3 and W4, respectively.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Weed interference lowered grain yield by 30% compared with W3.
- Taxon
- riceOryza sativat0
- Treatment
- weedy checke0
- Interactor
- Weede0weed
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 30e0
- Comparator
- W3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed interference in weedy check reduced grain yield by 48, 30 and 26% compared to W2, W3 and W4, respectively.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Weed interference lowered grain yield by 26% compared with W4.
- Taxon
- riceOryza sativat0
- Treatment
- weedy checke0
- Interactor
- Weede0weed
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 26%e0
- Comparator
- W4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed interference in weedy check reduced grain yield by 48, 30 and 26% compared to W2, W3 and W4, respectively.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Irrigation raised production cost by 7% compared with rainfed conditions.
- Taxon
- riceOryza sativat0
- Treatment
- Irrigatione0
- Outcome
- cost of productione0
- Direction
- increasede0
- Value
- 7%e0
- Comparator
- rain fed conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased cost of production by 7%, however, cost:benefit ratio increased by 44% compared to rain fed conditions.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Irrigation raised the cost:benefit ratio by 44% over rainfed conditions.
- Taxon
- riceOryza sativat0
- Treatment
- Irrigatione0
- Outcome
- cost:benefit ratioe0
- Direction
- increasede0
- Value
- 44%e0
- Comparator
- rain fed conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased cost of production by 7%, however, cost:benefit ratio increased by 44% compared to rain fed conditions.”
t0“rice (Oryza sativa L.)”
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