Abstract
Summary Increasing yields in farmer fields is a priority to address increasing food demands. The study was conducted within four wheat-growing areas in Ethiopia: Debre Birhan, Hosaina, Sinana and Maychew. The objectives were to identify (1) best-bet soil fertility management options based on agronomic performance and economic evaluation and (2) key yield-reducing factors in farmer fields based on an agronomic survey among 55 participating farmers. Two types of on-farm experiments were conducted: researcher-managed trials that tested combinations of nutrients, including micronutrients, organic resources or both over two cropping seasons and farmer-managed trials comparing ‘ improved practice ’ against ‘farmer’s practice’ . Fertilizer treatment affected wheat productivity in Debre Birhan ( p < 0.01), a site limited in sulphur. Here, full NPK increased yields over the control ( p < 0.05), whereas a combination of NPK and manure was better than the application of manure as the only source of added nutrients ( p < 0.05). Applying half the recommended NPK with micronutrients and manure achieved similar yields as the full fertilizer treatment. In Hosaina, treatment had no significant effect on wheat productivity, although a combination of NPK and zinc resulted in an additional 26–57% yield relative to the other treatments. In Maychew, a significant treatment effect ( p < 0.05) was observed. Here, the treatment with lower rates of nitrogen and phosphorous had lower yields than the full NPK treatment. A significant effect of plant densities on on-farm productivity was also observed. We conclude that although nutrient management including use of micronutrients is important in specific cases, investments to optimize plant densities have a huge potential to increase food productivity.
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Claims 11
Claim · model-written summary
Fertilizer treatment affected wheat productivity in Debre Birhan.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Fertilizer treatmente0
- Outcome
- wheat productivitye0
- Qualifier
- p < 0.01e0
- Setting
- Debre Birhane0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e0“Fertilizer treatment affected wheat productivity in Debre Birhan ( p < 0.01), a site limited in sulphur”
Claim · model-written summary
Full NPK increased yields over the control in Debre Birhan.
- Taxon
- wheatTriticum aestivume0
- Treatment
- full NPKe1
- Outcome
- yieldse1
- Direction
- increasede1
- Qualifier
- p < 0.05e1
- Comparator
- controle1
- Setting
- Debre Birhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e0“Fertilizer treatment affected wheat productivity in Debre Birhan ( p < 0.01), a site limited in sulphur”
e1“Here, full NPK increased yields over the control ( p < 0.05), whereas a combination of NPK and manure was better than the application of manure as the only source of added nutrients ( p < 0.05)”
Claim · model-written summary
A combination of NPK and manure gave better yields than manure as the only source of added nutrients in Debre Birhan.
- Taxon
- wheatTriticum aestivume0
- Treatment
- a combination of NPK and manuree1
- Outcome
- yieldse1
- Direction
- bettere1
- Qualifier
- p < 0.05e1
- Comparator
- the application of manure as the only source of added nutrientse1
- Setting
- Debre Birhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e0“Fertilizer treatment affected wheat productivity in Debre Birhan ( p < 0.01), a site limited in sulphur”
e1“Here, full NPK increased yields over the control ( p < 0.05), whereas a combination of NPK and manure was better than the application of manure as the only source of added nutrients ( p < 0.05)”
Claim · model-written summary
Half the recommended NPK with micronutrients and manure gave yields similar to the full fertilizer treatment.
- Taxon
- wheatTriticum aestivume0
- Treatment
- half the recommended NPK with micronutrients and manuree2
- Outcome
- yieldse2
- Direction
- similare2
- Comparator
- the full fertilizer treatmente2
- Setting
- Debre Birhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e0“Fertilizer treatment affected wheat productivity in Debre Birhan ( p < 0.01), a site limited in sulphur”
e2“Applying half the recommended NPK with micronutrients and manure achieved similar yields as the full fertilizer treatment”
Claim · model-written summary
In Hosaina, treatment had no significant effect on wheat productivity.
- Taxon
- wheatTriticum aestivume3
- Treatment
- treatmente3
- Outcome
- wheat productivitye3
- Direction
- no_changeinferrede3
- Setting
- Hosainae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e3“In Hosaina, treatment had no significant effect on wheat productivity, although a combination of NPK and zinc resulted in an additional 26–57% yield relative to the other treatments”
Claim · model-written summary
A combination of NPK and zinc gave an additional 26–57% yield relative to the other treatments in Hosaina.
- Taxon
- wheatTriticum aestivume3
- Treatment
- a combination of NPK and zince3
- Outcome
- yielde3
- Direction
- additionale3
- Value
- 26–57%e3
- Comparator
- the other treatmentse3
- Setting
- Hosainae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e3“In Hosaina, treatment had no significant effect on wheat productivity, although a combination of NPK and zinc resulted in an additional 26–57% yield relative to the other treatments”
Claim · model-written summary
Lower rates of nitrogen and phosphorous gave lower yields than the full NPK treatment in Maychew.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- the treatment with lower rates of nitrogen and phosphorouse5
- Outcome
- yieldse5
- Direction
- lowere5
- Comparator
- the full NPK treatmente5
- Setting
- Maychewe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e4“In Maychew, a significant treatment effect ( p < 0.05) was observed”
e5“Here, the treatment with lower rates of nitrogen and phosphorous had lower yields than the full NPK treatment”
Claim · model-written summary
A significant treatment effect was observed in Maychew.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- treatmente4
- Outcome
- treatment effecte4
- Qualifier
- p < 0.05e4
- Setting
- Maychewe4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e4“In Maychew, a significant treatment effect ( p < 0.05) was observed”
Claim · model-written summary
Plant density had a significant effect on on-farm productivity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- plant densitiese6
- Outcome
- on-farm productivitye6
- Setting
- on-farme6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e6“A significant effect of plant densities on on-farm productivity was also observed”
Claim · model-written summary
Investments to optimize plant densities have a large potential to increase wheat productivity.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- investments to optimize plant densitiese7
- Qualifier
- a huge potential to increase food productivitye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e7“We conclude that although nutrient management including use of micronutrients is important in specific cases, investments to optimize plant densities have a huge potential to increase food productivity”
Claim · model-written summary
Nutrient management including micronutrients is important in specific cases.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- nutrient management including use of micronutrientse7
- Qualifier
- in specific casese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Understanding factors influencing wheat productivity in Ethiopian highlands”
e7“We conclude that although nutrient management including use of micronutrients is important in specific cases, investments to optimize plant densities have a huge potential to increase food productivity”
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