Abstract
ABSTRACT A field experiment was conducted to assess the effect of the combined use of farmyard manure and inorganic fertilizer on the growth and yield of sorghum and on soil chemical properties in a semi-arid area in northeastern Ethiopia. Twelve treatments comprising factorial combinations of four levels of farmyard manure (0, 5, 10, and 15 t ha−1) and three levels of inorganic fertilizers (0%, 50%, and 100% of the recommended rate) were compared in a randomized complete block design with three replications over a period of six years. The results revealed significant improvements in the growth and yield of sorghum due to the main and interaction effects of farmyard manure and inorganic fertilizer application. The combined application of farmyard manure and inorganic fertilizers increased post-anthesis dry-matter production by 147%–390% and grain yield by 14%–36%. The main effects of farmyard manure and inorganic fertilizers increased stover yield by 8%–21% and 14%–21%, respectively. Farmyard manure application increased total nitrogen (N) uptake by 21%–36%, grain protein yield by 8%–11%, and grain protein concentration by 20%–29%. Application of farmyard manure along with 50% of the recommended inorganic fertilizer rate resulted in a grain yield equivalent to, or greater than that for 100% of the recommended inorganic fertilizer rate, thus effecting a 50% savings of inorganic N and phosphorus (P) fertilizer. Application of 5, 10, and 15 t farmyard manure ha−1along with 100% of the recommended fertilizer rate and 5, 10, and 15 t farmyard manure ha−1 along with 50% of the recommended fertilizer rate can be recommended for farmers who can and cannot afford to buy inorganic fertilizers, respectively.
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Claims 11
Claim · model-written summary
Combined manure and fertilizer increased sorghum post-anthesis dry matter production by 147%–390%.
- Treatment
- combined application of farmyard manure and inorganic fertilizerse0
- Outcome
- post-anthesis dry-matter productione0
- Direction
- increasede0
- Value
- 147%–390%e0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of farmyard manure and inorganic fertilizers increased post-anthesis dry-matter production by 147%–390% and grain yield by 14%–36%.”
e1“Sorghum”
Claim · model-written summary
Combined manure and fertilizer increased sorghum grain yield by 14%–36%.
- Treatment
- combined application of farmyard manure and inorganic fertilizerse0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 14%–36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of farmyard manure and inorganic fertilizers increased post-anthesis dry-matter production by 147%–390% and grain yield by 14%–36%.”
e1“Sorghum”
Claim · model-written summary
Farmyard manure increased sorghum stover yield by 8%–21%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The main effects of farmyard manure and inorganic fertilizers increased stover yield by 8%–21% and 14%–21%, respectively.”
e1“Sorghum”
Claim · model-written summary
Inorganic fertilizer increased sorghum stover yield by 14%–21%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The main effects of farmyard manure and inorganic fertilizers increased stover yield by 8%–21% and 14%–21%, respectively.”
e1“Sorghum”
Claim · model-written summary
Manure increased sorghum nitrogen uptake by 21%–36%.
- Treatment
- Farmyard manure applicatione0
- Outcome
- total nitrogen (N) uptakee0
- Direction
- increasede0
- Value
- 21%–36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Farmyard manure application increased total nitrogen (N) uptake by 21%–36%, grain protein yield by 8%–11%, and grain protein concentration by 20%–29%.”
e1“Sorghum”
Claim · model-written summary
Manure increased sorghum grain protein yield by 8%–11%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Farmyard manure application increased total nitrogen (N) uptake by 21%–36%, grain protein yield by 8%–11%, and grain protein concentration by 20%–29%.”
e1“Sorghum”
Claim · model-written summary
Manure increased sorghum grain protein concentration by 20%–29%.
- Treatment
- Farmyard manure applicatione0
- Outcome
- grain protein concentratione0
- Direction
- increasede0
- Value
- 20%–29%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Farmyard manure application increased total nitrogen (N) uptake by 21%–36%, grain protein yield by 8%–11%, and grain protein concentration by 20%–29%.”
e1“Sorghum”
Claim · model-written summary
Manure plus half-rate fertilizer achieved at least as much grain yield as full-rate fertilizer.
- Treatment
- farmyard manure along with 50% of the recommended inorganic fertilizer ratee0
- Outcome
- grain yielde0
- Direction
- equivalent to, or greater thane0
- Comparator
- 100% of the recommended inorganic fertilizer ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of farmyard manure along with 50% of the recommended inorganic fertilizer rate resulted in a grain yield equivalent to, or greater than that for 100% of the recommended inorganic fertilizer rate”
e1“Sorghum”
Claim · model-written summary
Manure with half-rate fertilizer saved 50% of inorganic nitrogen and phosphorus fertilizer.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thus effecting a 50% savings of inorganic N and phosphorus (P) fertilizer”
e1“Sorghum”
Claim · model-written summary
The authors recommend 5, 10, or 15 t manure per hectare with full fertilizer rates for farmers able to afford fertilizer.
- Outcome
- 5, 10, and 15 t farmyard manure ha−1along with 100% of the recommended fertilizer ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 5, 10, and 15 t farmyard manure ha−1along with 100% of the recommended fertilizer rate and 5, 10, and 15 t farmyard manure ha−1 along with 50% of the recommended fertilizer rate can be recommended for farmers who can and cannot afford to buy inorganic fertilizers, respectively.”
e1“Sorghum”
Claim · model-written summary
The authors recommend 5, 10, or 15 t manure per hectare with half-rate fertilizer for farmers unable to afford full rates.
- Outcome
- 5, 10, and 15 t farmyard manure ha−1 along with 50% of the recommended fertilizer ratee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Application of 5, 10, and 15 t farmyard manure ha−1along with 100% of the recommended fertilizer rate and 5, 10, and 15 t farmyard manure ha−1 along with 50% of the recommended fertilizer rate can be recommended for farmers who can and cannot afford to buy inorganic fertilizers, respectively.”
e3“Sorghum”
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See all 446 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.