Legume-Based Technologies for African Savannas: Challenges for Research and Development

Weber, G.

doi:10.1080/01448765.1996.9754790

Cited by 30 publications

(10 citation statements)

References 11 publications

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“…P nutrition stimulated a higher rate of growth, and coupled with increasing duration of growth, the late maturing varieties had higher yield than the medium and early maturing varieties. GPC averaged 41.5 % in this study and this compares well with the 35-42 % reported by Weber (1996). The early variety had the largest seed size and the higher GPC compared with other varieties.…”

Section: Discussionsupporting

confidence: 88%

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Maturity Class and P Effects on Soya Bean Grain Yield in the Moist Savanna of West Africa

Ogoke¹,

Carsky²,

Togun³

et al. 2003

J Agronomy Crop Science

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Field trials were replicated at four sites in the moist savanna ecological zone of West Africa to study the effect of maturity class and phosphorus (P) rate on grain yield and total protein yield (TPY) of some new soya bean varieties. Grain yield and TPY averaged 1.43 Mg ha )1 and 587 kg ha )1 , respectively. Without P application grain yield and TPY were not significantly different among the varieties. In addition, at zero P treatment, grain yield and TPY were not significantly different among three sites where available P was 6.2 mg kg )1 or less. P application depressed grain yield and TPY at a site where the available soil P was high (16.2 mg kg )1 ). With P application grain yield and TPY were in the range of 1.2-2.28 Mg ha )1 and 505-948 kg ha )1 , respectively, for the varieties compared with 0.99-1.12 Mg ha )1 and 454-462 kg ha )1 when P was not applied. The response of grain yield to 30 kg P ha )1 was substantial at Gidan Waya (113 %), Kasuwan Magani (63 %) and Fashola (60 %), three sites where available soil P was low. The application of 30 kg P ha )1 increased grain yield by 21 % in early, 26 % in medium and 58-70 % in the late varieties. Significant variety by P rate interaction effects were observed on grain yield and TPY but not on grain protein concentration (GPC). TPY showed greater response to P in the late varieties than in the early or medium. While seed size correlated significantly and positively with GPC, P application had no significant effect on GPC.

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Section: Discussionsupporting

confidence: 88%

“…The differences in GPC were small compared with differences in grain yield. TPY in the varieties ranged between 494 and 713 kg ha )1 and was comparable with the 245-840 kg ha )1 reported by Weber (1996). It was even as much as 949 kg ha )1 in one of the late varieties (TGx1670-1F) when 60 kg P ha )1 was applied.…”

Section: Discussionsupporting

confidence: 80%

Maturity Class and P Effects on Soya Bean Grain Yield in the Moist Savanna of West Africa

Ogoke¹,

Carsky²,

Togun³

et al. 2003

J Agronomy Crop Science

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“…There were significant interaction effects in all the parameters except on soil N. Application of 40 KgPha -1 to cowpea gave the highest interaction effect. These results confirm the observation made by Weber (1996) that in the Northern Guinea Savanna of Nigeria, legumes require about 30 kgPha -1 for optimal growth and N 2 -fixation. However, higher rate of the P (40 kgha -1 ) was used in this study because of the lower P level in the Sudan Savannah soils than that of Guinea Savannah coupled with continuous depletion of P in Savanna soils in recent years.…”

Section: Resultssupporting

confidence: 81%

Effect of Phosphorus Fertilizer on Nitrogen Fixation by Some Grain Legume Varieties in Sudano – Sahelian Zone of North Eastern Nigeria

Yakubu¹,

Kwari²,

Sandabe³

2010

Nig J Bas App Sci

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“…In Malawi, maize following mucuna yielded about 1.5 t ha À1 , while maize under the recommended fertilizer application yielded 2.3 t ha À1 and 0.8 t ha À1 on unfertilized plots (Sakala et al, 2003). Mucuna is a vigorous twining crop that can grow on sandy soils with low available phosphorus (P) (Cook et al, 2005), and can suppress weeds such as Imperata cylindrical and Striga, which are some of the most problematic weeds in the depleted sandy soils in most smallholder farming systems (Weber, 1996;Ikie et al, 2006). Natural pasture provides the basic feed for ruminant animal production (Woyengo et al, 2004) in these systems and grass biomass and quality is low during the dry season with protein content dropping from 120 to 160 g crude protein (CP) kg À1 dry matter (DM) in the growing season to as low as 10-20 CP kg À1 DM in the dry season (Baloyi et al, 1997;Maasdorp and Titterton, 1997;Mpairwe, 2005).…”

Section: Introductionmentioning

confidence: 99%

Maize–mucuna rotation: An alternative technology to improve water productivity in smallholder farming systems

Masikati

Manschadi²,

Rooyen

et al. 2014

Agricultural Systems

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Rain-fed crop production systems in the semi-arid tropics of Zimbabwe are characterized by low water productivity (WP), which is partly attributed to inherent low soil fertility, and further exacerbated by continuous cropping without addition of adequate organic and inorganic fertilizers due to unavailability and high costs. A simulation modeling approach was used to evaluate potential interventions that can be used as entry points to improve crop water productivity. Low-cost interventions that use locally available organic inputs were evaluated using the Agriculture Production Systems sIMulator (APSIM). The farmer practice (FP) was compared to interventions comprising manure application (MN) and maize-mucuna rotation (MMR). Their potential effects on crop water productivity, dynamics of soil organic carbon (SOC) and total nitrogen (TN) were assessed. Average maize grain water productivity was 0.32, 0.40 and 0.70 kg m À3 under the FP, MN and MMR treatments, respectively, while that of mucuna biomass (Mucuna pruriens) was 1.34 kg m À3. Cropping under the FP and MN treatments showed negative trends in SOC and TN over 30 years, with average losses ranging from 17 to 74 kg ha À1 yr À1 and 6 to 16 kg ha À1 yr À1 , respectively. In contrast, the MMR treatment showed positive trends in both soil organic carbon (SOC) and total nitrogen (TN). The SOC and TN increased by 2.6-194 kg ha À1 yr À1 and 6-14 kg ha À1 yr À1 , respectively. According to the simulation results it can be concluded that the MMR treatment can improve the water productivity of smallholder maize systems in the semi-arid areas of Zimbabwe under nutrient-depleted soil conditions and can also contribute to the building up of SOC and TN.

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Legume-Based Technologies for African Savannas: Challenges for Research and Development

Cited by 30 publications

References 11 publications

Maturity Class and P Effects on Soya Bean Grain Yield in the Moist Savanna of West Africa

Maturity Class and P Effects on Soya Bean Grain Yield in the Moist Savanna of West Africa

Effect of Phosphorus Fertilizer on Nitrogen Fixation by Some Grain Legume Varieties in Sudano – Sahelian Zone of North Eastern Nigeria

Maize–mucuna rotation: An alternative technology to improve water productivity in smallholder farming systems

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