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Identification of companion legumes for midmar Italian ryegrass
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H.R.H. Smith --- Department of Agriculture (Transvaal Region),In a preliminary investigation seven legumes were planted alone and in combination with Lolium multiflorum cv. Midmar. The pure stands of legumes were harvested at either four, five or six week cutting intervals, while the pure stands of Lolium multiflorum... -
Identification of companion small grains for midmar Italian ryegrass
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H.R.H. Smith --- , C.P. Dempsy --- Department of Agriculture (Transvaal Region), M. Schaffner --- Department of Agriculture (Transvaal Region),In a preliminary investigation four small grain species, oats (Avena sativa), rye (Secalae cereale), wheat (Triticum aestivum) and triticale (Triticum × secalae) were planted alone and in combination with Lolium multiflorum cv Midmar under irrigation. The dry matter (DM) yield... -
Die invloed van brand en maai op onbeweide langgrasveld in Natal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.J.G. leRoux --- Departcment Landbou, Republiek van Suid‐AfrikaThe effect of burning and mowing on ungrazed tall grassveld of Natal. The trial was conducted on the Estcourt Research Station to show the effect of 14 burning and mowing treatments without grazing in the tall grassveld of Natal. The... -
Prosedures en probleme by die gebruik van die PUTU9–87 gewasgroeisimulasiemodel vir koring onder besproeiing in die Vanderkloof-Staatswaterskema
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. H.F. Botes --- Departement Landbou-ekonomie, Republiek van Suid-Afrika L.K. Oosthuizen --- Departement Landbou-ekonomie, Republiek van Suid-AfrikaDie doel van hierdie ondersoek was om die PUTU9–87 gewasgroeisimulasiemodelte kalibreer om koringop-brengste en die grondwaterinhoud op 'n bevredlgende wyse in die Vanderkloof-Staatswaterskema te voor- spel, gegewe beperkte eksperimentele data. Opbrengste wat met PUTU voorspel is, word vergelyk met eksperimentele... -
Threshold values for sulphur in soils of the main maize-producing areas of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.J. van Biljon --- , Republic of South Africa D. Fouche --- , Republic of South Africa A. D.P. Botha --- , Republic of South AfricaFertilizers introduced to South Africa after World War 2 contained sufficient sulphur (S) to satisfy the demands of all crops. However, dramatic shifts to high-analysis NPK fertilizers containing little or no S and restriction on sulphur dioxide emissions by industries... -
The Influence of Short Rotation Forestry on Wood Production for Sawnwood and Veneer
Item type: Journal Article • Journal: South African Forestry Journal • Authors: C.P. Kromhout --- Department of Environment Affairs, D.L. Bosman --- Council for Scientific and Industrial Research,Short rotations for the production of saw and veneer logs range from 20 to 35 years during which logs of the required size and quality are produced provided that thinning and pruning regimes are meticulously adhered to. Early and regular... -
Stand biomass and volume estimation for Miombo woodlands at Kitulangalo, Morogoro, Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S.A.O. Chamshama --- Faculty of Forestry and Nature Conservation, Tanzania A.G. Mugasha --- Faculty of Forestry and Nature Conservation, Tanzania E. Zahabu --- Faculty of Forestry and Nature Conservation, TanzaniaTree volume and biomass equations developed for Kitulangalo area in Morogoro, Tanzania ignored small branches and small trees. Consequently, this study was carried out to develop new individual tree volume and biomass equations, and assess current regeneration status, biodiversity and... -
Nitrogen uptake of a perennial ryegrass–white clover pasture following strategic nitrogen fertiliser application during the cool seasons in the Western Cape province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Labuschagne MB Hardy GA AgenbagThe effect of four fertiliser nitrogen (N) levels (0, 50, 100 or 150 kg N ha−1) applied as a single dressing in either autumn (late April), early winter (early June), late winter (mid July), early spring (late August) or late... -
On-farm productivity of Acacia angustissima, Calliandra calothyrsus and Leucaena leucocephala in a subhumid area in Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: I Matimati --- Global Change Research Group, South Africa BV Maasdorp --- Crop Science Department, Faculty of Agriculture, Zimbabwe L Hove --- , ZimbabweSmallholder dairy farmers in Natural Region II, especially in Chikwaka Communal Area, adopted Acacia angustissima, Calliandra calothyrsus and Leucaena leucocephala in the 1995/96 season as alternatives for supplementing expensive commercial dairy feeds. Although several on-station trials have been done in... -
The effect of nitrogen and sulphur on the grain yield and quality of canola (Brassica napus L.) grown in the Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Wonder Ngezimana --- Department of Agronomy, South Africa Gert A Agenbag --- Department of Agronomy, South AfricaOn average low grain yields of less than 1.5 t ha-1 are obtained with canola in the Western Cape province of South Africa. Injudicious use of fertiliser has been suggested as a major cause, hence the study was done to... -
Farmers’ perspectives on factors limiting tomato production and yields in Kabete, Kiambu County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: G. N. Karuku --- Department of LARMAT, Nairobi J. W. Kimenju --- Department of Plant Science and Crop Protection, Nairobi H. Verplancke --- Department of Soil Management and Soil Care, BelgiumA survey was carried out in Kabete, Central Kenya to establish the limitations and constraints experienced by farmers growing tomatoes. A structured questionnaire was prepared and tested in the field before the actual survey was carried out. Fifty farmers were... -
Yields of Green Grams and Pigeonpeas under Smallholder Conditions in Machakos County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: John Mulwa Wambua --- Department of Agricultural Economics and Agribusiness, Kenya Margaret Ngigi --- Department of Agricultural Economics and Agribusiness, Kenya Muhammad Lutta --- Kenya Agricultural and Livestock Research Organization, KenyaGreen grams and pigeonpeas have multiple benefits to the rural poor as food security, fodder for livestock and fuel for small-scale farmers, despite low smallholder yields in Kenya. However, little is known about the factors between different farmers that influence... -
The role of fish-poultry integration on fish growth performance, yields and economic benefits among smallholder farmers in sub-Saharan Africa, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AP Shoko --- Tanzania Fisheries Research Institute, Tanzania SM Limbu --- Department of Aquatic Sciences and Fisheries Technology, Tanzania HA Lamtane --- Department of Animal, Aquaculture and Range Sciences, Tanzania MA Kishe-Machumu --- Tanzania Fisheries Research Institute, Tanzania B Sekadende --- Tanzania Fisheries Research Institute, Tanzania EE Ulotu --- Tanzania Fisheries Research Institute, Tanzania JC Masanja --- Kilombero District Council, Tanzania YD Mgaya --- Department of Aquatic Sciences and Fisheries Technology, TanzaniaAquaculture practices from sub-Saharan Africa are characterised by low production, owing to improper technology. Production can be increased through integrating fish farming with other existing on-farm activities, particularly livestock husbandry. We assessed the role of fish-poultry integration on all male... -
Nitrogen Deficiency in Semi-Arid Kenya: Can Pigeonpea fix it?
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: K. Kwena --- University of Nairobi, Kenya G. N. Karuku --- University of Nairobi, Kenya F. O. Ayuke --- University of Nairobi, Kenya A. O. Esilaba --- Kenya Agricultural & Livestock Research Organization (KALRO), KenyaFew studies have evaluated improved pigeonpea varieties developed and released in Kenya for soil fertility improvement and contribution to the productivity of cereal-based cropping systems prevalent in marginal areas. A study comprising field and greenhouse experiments was conducted between 2009... -
Smart cascades: using cost analysis to improve HIV care and treatment interventions to achieve global 95–95–95 goals
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Catherine Barker Cantelmo --- Health Policy Plus Project (HP+), USA Bryant Lee --- Health Policy Plus Project (HP+), USA Arin Dutta --- Health Policy Plus Project (HP+), USABackground: HIV programmes are achieving significant scale, even as external financing plateaus. Maximising achievement from identification to viral suppression is key to epidemic control and reaching global 95-95-95 goals. Cost and technical efficiency analyses can help programs understand why losses... -
Initial growth results comparing first generation F1 and advanced-generation F2 Pinus patula × Pinus tecunumanii interspecific hybrid families
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: André Nel --- , Juan J Acosta --- , Gary R Hodge --- ,The hybrid between Pinus patula and P. tecunumanii low elevation (PPTL) and high elevation (PPTH) sources was developed in the 1990s in South Africa and commercialised during the 2000s in response to high post-establishment mortality of P. patula caused by... -
Influence of water application levels and plant densities on the plasticity of canola in the central Free State, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: KA Seetseng --- , South Africa LD van Rensburg --- , South Africa JH Barnard --- , South Africa CC du Preez --- , South AfricaIn South Africa canola (Brassica napus L.) is cultivated in rotation with wheat under winter rainfall in the Western Cape Province. Expansion of the crop to the other eight provinces is advocated to reduce a shortage of locally produced plant...