Abstract
Fertilizer is a major limiting factor to agriculture in southern Africa (SA). Coupled with this is lack of appropriate fertilizer recommendation rates for high productivity in existing agricultural systems. Field experiments were conducted to determine nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates for high cassava tuber yield and quality for the coastal semiarid Dondo District of Mozambique, and high maize grain yields for both vertisol and inceptisol of Maphutseng in Lesotho. In general, the results showed that cassava tuber yield, cassava tuber quality as measured by tuber starch content, and maize grain yield were significantly increased by fertilizer addition (p0.05). The results also showed that maize grain yield was not significantly affected by tillage practices (p>0.05). Combined applications of 60 kg N-60 kg P-0 kg K and 60 kg N-90 kg P-150 kg K kg per ha are suggested for high cassava tuber yield, and high cassava tuber starch content for the coastal semiarid Dondo District of Mozambique, respectively. Economically optimum maize grain yields (EOY) and profits (EOP) for the southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesotho, were estimated at 222 kg, 182 kg, and 123 kg of N (applied as limestone ammonium nitrate) per ha for no-till vertisol, no-till inceptisol, and till vertisol maize systems, respectively. The results suggest that an application of 30 kg of P (P2O5) per ha is required for high grain yields in inceptisol maize system. The results also confirmed that the benefits of not tilling the soil are not immediate. On the whole, the results suggest that there is potential to increase productivity in existing agricultural systems with the use of fertilizer in both Mozambique and Lesotho. However, this will not be possible without increasing farmers’ access to fertilizer given that fertilizer use in both countries is still very low (
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Claims 11
Claim · model-written summary
Fertilizer addition significantly increased cassava tuber yield.
- Taxon
- cassava
Manihot esculentae1 - Treatment
- fertilizer additione1
- Outcome
- cassava tuber yielde1
- Direction
- increasede1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted to determine nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates for high cassava tuber yield and quality for the coastal semiarid Dondo District of Mozambique”
e1“cassava tuber yield, cassava tuber quality as measured by tuber starch content, and maize grain yield were significantly increased by fertilizer addition”
Claim · model-written summary
Fertilizer addition significantly increased cassava tuber starch content.
- Taxon
- cassavaManihot esculentae1
- Treatment
- fertilizer additione1
- Outcome
- tuber starch contente1
- Direction
- increasede1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted to determine nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates for high cassava tuber yield and quality for the coastal semiarid Dondo District of Mozambique”
e1“cassava tuber yield, cassava tuber quality as measured by tuber starch content, and maize grain yield were significantly increased by fertilizer addition”
Claim · model-written summary
Fertilizer addition significantly increased maize grain yield.
- Treatment
- fertilizer additione1
- Outcome
- maize grain yielde1
- Direction
- increasede1
- Setting
- Field experimentse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted to determine nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates for high cassava tuber yield and quality for the coastal semiarid Dondo District of Mozambique”
e1“cassava tuber yield, cassava tuber quality as measured by tuber starch content, and maize grain yield were significantly increased by fertilizer addition”
Claim · model-written summary
Combined applications of 60 kg N-60 kg P-0 kg K per ha are suggested for high cassava tuber yield.
- Taxon
- cassavaManihot esculentae2
- Treatment
- 60 kg N-60 kg P-0 kg Ke2
- Outcome
- high cassava tuber yielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Combined applications of 60 kg N-60 kg P-0 kg K and 60 kg N-90 kg P-150 kg K kg per ha are suggested for high cassava tuber yield, and high cassava tuber starch content for the coastal semiarid Dondo District of Mozambique, respectively”
Claim · model-written summary
Combined applications of 60 kg N-90 kg P-150 kg K per ha are suggested for high cassava tuber starch content in the coastal semiarid Dondo District of Mozambique.
- Taxon
- cassavaManihot esculentae2
- Treatment
- 60 kg N-90 kg P-150 kg Ke2
- Outcome
- high cassava tuber starch contente2
- Setting
- coastal semiarid Dondo District of Mozambiquee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Combined applications of 60 kg N-60 kg P-0 kg K and 60 kg N-90 kg P-150 kg K kg per ha are suggested for high cassava tuber yield, and high cassava tuber starch content for the coastal semiarid Dondo District of Mozambique, respectively”
Claim · model-written summary
Economically optimum nitrogen for maize on no-till vertisol was 222 kg per ha.
- Treatment
- no-till vertisole3
- Outcome
- Economically optimum maize grain yields (EOY) and profits (EOP)e3
- Value
- 222 kge3
- Qualifier
- applied as limestone ammonium nitratee3
- Setting
- southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesothoe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Economically optimum maize grain yields (EOY) and profits (EOP) for the southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesotho, were estimated at 222 kg, 182 kg, and 123 kg of N (applied as limestone ammonium nitrate) per ha for no-till vertisol, no-till inceptisol, and till vertisol maize systems, respectively”
Claim · model-written summary
Economically optimum nitrogen for maize on no-till inceptisol was 182 kg per ha.
- Treatment
- no-till inceptisole3
- Outcome
- Economically optimum maize grain yields (EOY) and profits (EOP)e3
- Value
- 182 kge3
- Qualifier
- applied as limestone ammonium nitratee3
- Setting
- southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesothoe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Economically optimum maize grain yields (EOY) and profits (EOP) for the southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesotho, were estimated at 222 kg, 182 kg, and 123 kg of N (applied as limestone ammonium nitrate) per ha for no-till vertisol, no-till inceptisol, and till vertisol maize systems, respectively”
Claim · model-written summary
Economically optimum nitrogen for maize on till vertisol was 123 kg per ha.
- Treatment
- till vertisole3
- Outcome
- Economically optimum maize grain yields (EOY) and profits (EOP)e3
- Value
- 123 kge3
- Qualifier
- applied as limestone ammonium nitratee3
- Setting
- southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesothoe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Economically optimum maize grain yields (EOY) and profits (EOP) for the southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesotho, were estimated at 222 kg, 182 kg, and 123 kg of N (applied as limestone ammonium nitrate) per ha for no-till vertisol, no-till inceptisol, and till vertisol maize systems, respectively”
Claim · model-written summary
An application of 30 kg P per ha is suggested for high grain yields in the inceptisol maize system.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The results suggest that an application of 30 kg of P (P2O5) per ha is required for high grain yields in inceptisol maize system”
Claim · model-written summary
Maize grain yield was not significantly affected by tillage practices.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The results also showed that maize grain yield was not significantly affected by tillage practices”
Claim · model-written summary
The benefits of not tilling the soil were not immediate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Economically optimum maize grain yields (EOY) and profits (EOP) for the southwest lowlands of Maphutseng village, Mohale’s Hoek District, Lesotho, were estimated at 222 kg, 182 kg, and 123 kg of N (applied as limestone ammonium nitrate) per ha for no-till vertisol, no-till inceptisol, and till vertisol maize systems, respectively”
e6“The results also confirmed that the benefits of not tilling the soil are not immediate”
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