Improving Maize Yield in the Guinea Savannah Zone of Ghana with Leguminous Cover Crops and PK Fertilization

2004 ◽  
Vol 3 (2) ◽  
pp. 115-121 ◽  
Author(s):  
M. Fosu . ◽  
Ronald F. Kuhne . ◽  
Paul L.G. Vlek .
2010 ◽  
Vol 102 (6) ◽  
pp. 1700-1709 ◽  
Author(s):  
Montserrat Salmerón ◽  
José Cavero ◽  
Dolores Quílez ◽  
Ramón Isla

2021 ◽  
Vol 16 (191) ◽  
pp. 68-78
Author(s):  
C. S. R. Pitta ◽  
J. A. Bonetti ◽  
A. Lavratti ◽  
A. F. Ribas ◽  
D. D. M. Bhering ◽  
...  

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 641
Author(s):  
Gerhard Moitzi ◽  
Elisabeth Sattler ◽  
Helmut Wagentristl

Agricultural soils can be affected in their ecological functions by in-field traffic of agricultural machinery. A three-factorial research design was carried out in a field experiment to test the effect of slurry tanker filling level (filled, half-filled, empty), tire inflation pressure of the slurry tanker (high: 300 kPa, low: 100 kPa), and ground covering (+cover crop, −cover crop) on tire track and soil penetration resistance (averaged, 0–20 cm, 21–40 cm) after application on the fields in spring. Additionally, the effect on grain yield of the subsequent culture was considered. The total weight of the tractor slurry tanker combination was 16,470 kg (empty), 25,940 kg (half-filled), and 34,620 kg (filled). The low tire inflation pressure of the slurry tanker increased the mean tire–soil contact area by 75% (filled), 38% (half-filled), and 16% (empty tanker). The results obtained show a significant effect of tire inflation pressure and ground covering on the measured parameters. The tire inflation pressure reduction effect on track depth was highest in the filled slurry tanker (−17.8%). With increasing wheel load, the effect of reduced tire inflation pressure on soil penetration resistance (0–20 cm) increased. In the subsoil (21–40 cm), the effect of tire inflation pressure was much lower, indicating that a reduction of tire inflation pressure preserves the upper layers rather than the lower ones. Furthermore, cover crops are linked to a higher degree of soil deformation after traffic with the tractor–slurry combination due to their loosening effect on the topsoil. Tire tracks were 15.0% deeper in the cover crop field than in the field without a cover crop. It is assumed that cover crop mixtures with different types of root mass can influence the mitigation of soil compaction in an ameliorative way.


2016 ◽  
Vol 53 (2) ◽  
pp. 288-307 ◽  
Author(s):  
W. MUPANGWA ◽  
C. THIERFELDER ◽  
A. NGWIRA

SUMMARYMultilocation experiments were established to determine the best strategy for using inorganic fertilizer in conservation agriculture (CA) systems that use green manure cover crops, namely sunhemp, velvet bean and cowpea grown in rotation with maize. The objectives of the study were to determine (i) the effect of half and full rates of basal fertilizer on maize and legume biomass yields, (ii) the residual effects of unfertilized, half and fully fertilized green manure legumes on maize grown after the legumes, and (iii) the residual effect of unfertilized, half and fully fertilized green manure legumes combined with basal and topdressing fertilizer on maize yields. Experimental design was a randomized complete block with basal fertilizer as a treatment in the green manure legumes phase. Previously, in the maize phase, green manure legume species were the main treatment with basal fertilizer as a subtreatment (sunhemp, velvet bean and cowpea: 0, 75, 150 kg ha−1and 0, 50, 100 kg ha−1, respectively). Nitrogen was applied in the maize phase at 0, 23, 46, 69 kg N ha−1as a sub-subtreatment in Malawi. Results showed that inorganic fertilizer is the most effective when applied to the maize, not green manure legumes. Biomass of green manure legumes, sunnhemp 8084 kg ha−1, velvet bean 7678 kg ha−1and cowpea 4520 kg ha−1, was not significantly affected by application of basal fertilizer. Maize production increased after the application of green manure legumes with maize-after-maize, maize-after-velvet bean, maize-after-sunnhemp and maize-after-cowpea, yielding 3804, 5440, 5446 and 5339 kg ha−1, respectively. Nitrogen increased maize yield regardless of the previously used green manure legumes species. Our results suggest that farmers should apply fertilizer to maize and grow green manure legumes on residual soil in CA systems. Despite growing green manure legumes, smallholders should apply nitrogen topdressing to maize grown using the green manure legumes in some agro-ecologies.


2006 ◽  
Vol 5 (2) ◽  
pp. 232-238 ◽  
Author(s):  
W.A. Agyare . ◽  
V.A. Clottey . ◽  
H. Mercer-Quarshie . ◽  
J.M. Kombiok .

Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 389
Author(s):  
Ylva Nyberg ◽  
Caroline Musee ◽  
Emmanuel Wachiye ◽  
Mattias Jonsson ◽  
Johanna Wetterlind ◽  
...  

With growing global demand for food, unsustainable farming practices and large greenhouse gas emissions, farming systems need to sequester more carbon than they emit, while also increasing productivity and food production. The Kenya Agricultural Carbon Project (KACP) recruited farmer groups committed to more Sustainable Agricultural Land Management (SALM) practices and provided these groups with initial advisory services on SALM, farm enterprise development and village savings and loan associations. Recommended SALM practices included agroforestry, cover crops, mulching, composting manure, terracing, reduced tillage and water harvesting. The effects of the KACP on the uptake of SALM practices, maize yield, perceived food self-sufficiency and savings during the initial four years were assessed comparing control and project farmers using interviews, field visits and measurements. Farmers participating in the KACP seemed to have increased uptake of most SALM practices and decreased the use of practices to be avoided under the KACP recommendations. Agroforestry and terraces showed positive effects on maize yield. During all four years, the KACP farms had higher maize yield than control farms, but yield differences were similar in 2009 and 2012 and there was no overall significant effect of the KACP. In 2012, the KACP farms had higher food self-sufficiency and tended to have higher monetary savings than control farms.


2020 ◽  
Vol 6 (4) ◽  
pp. 2601-2611
Author(s):  
Tanimu MU ◽  
Adeosun JO ◽  
Muhammad A ◽  
Na Allah MS ◽  
Bubuche TS ◽  
...  

2017 ◽  
Vol 109 (3) ◽  
pp. 1039-1047 ◽  
Author(s):  
Paulo Sergio Pavinato ◽  
Marcos Rodrigues ◽  
Amin Soltangheisi ◽  
Laércio Ricardo Sartor ◽  
Paul John Anthony Withers

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