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Shadrack O. Nyawade
University of Nairobi
8Publications
4H-index
23Citations
Publications 9
Newest
#1Shadrack O. Nyawade (UoN: University of Nairobi)H-Index: 4
#2Nancy N. Karanja (UoN: University of Nairobi)H-Index: 4
Last.M. Parker (CIP: International Potato Center)H-Index: 3
view all 6 authors...
Continuous cultivation of potato (Solanum tuberosum L.) in monoculture systems represents the greatest factor deteriorating soil organic matter (SOM) in smallholder farms. With an aim to breaking this norm, a 2-year field trial intercropping potato with two legumes: lima bean (Phaseolus lunatus) and dolichos (Lablab purpureus), was conducted in the upper-midland (1552 meters above sea level (masl.)), lower-highland (1854 masl.) and upper-highland (2552 masl.) agro-ecologies of Kenya. Residues fr...
3 CitationsSource
#1Shadrack O. Nyawade (UoN: University of Nairobi)H-Index: 4
#2Nancy N. Karanja (UoN: University of Nairobi)H-Index: 4
Last.M. Parker (CIP: International Potato Center)H-Index: 3
view all 6 authors...
Integrating crop species with different photosynthetic pathways has great potential to increase efficiency in the use of scarce resources. In order to tap the resource complementarity emanating from this mix, this study intercropped potato (Solanum tuberosum L.) with lima bean (Phaseolus lunatas L.) and dolichos (Lablab purpureous L.), and related soil temperature with radiation use efficiency and crop water productivity of rainfed potato in the upper midland (1552 m above sea level (masl), lowe...
Source
#1Shadrack O. Nyawade (UoN: University of Nairobi)H-Index: 4
#2Ckk Gachene (UoN: University of Nairobi)H-Index: 14
Last.M. Parker (CIP: International Potato Center)H-Index: 3
view all 6 authors...
Abstract Soil and nutrient losses due to soil erosion are pronounced in potato growing areas of East Africa due largely to the rugged topography and high soil disturbance associated with potato cultivation. This study intercropped potato (Solanum tuberosum L.) with three grain legumes: lablab bean (Lablab purperous L.), garden pea (Pisum sativa L.) and climber bean (Phaseolus vulgaris L.) in runoff plots and assessed their impact on soil and nutrient losses in central Kenya highlands. Bare plots...
1 CitationsSource
#1Harun I. Gitari (KU: Kenyatta University)H-Index: 3
#2Ckk Gachene (UoN: University of Nairobi)H-Index: 14
Last.Elmar Schulte-Geldermann (CIP: International Potato Center)H-Index: 6
view all 6 authors...
Aims To assess the effects of potato-legume intercropping on selected soil physical and chemical properties after four consecutive growing seasons (from the short rains in 2014 to long rains 2016).
5 CitationsSource
#2Nancy KaranjaH-Index: 19
Last.M. ParkerH-Index: 3
view all 9 authors...
A paper presented at the Eleventh triennial African Potato Association (APA) Conference, August 25–29, 2019. Kigali, Rwanda
1 CitationsSource
#1Shadrack O. Nyawade (UoN: University of Nairobi)H-Index: 4
#2Nancy N. Karanja (UoN: University of Nairobi)H-Index: 4
Last.M. Parker (CIP: International Potato Center)H-Index: 3
view all 5 authors...
Abstract Soil erosion rates are exacerbated in sloping arable lands of Central Kenya due mainly to the high soil disturbance caused by potato hilling. A field study was conducted in runoff plots to quantify the effect of potato hilling on soil loss, soil moisture distribution and soil temperature. Three hilling practices; hilling performed at before crop emergence (pre-hilling), one-pass hilling (at 15 days after potato emergence), the conventional two-pass hilling (at 15 and 30 days after potat...
4 CitationsSource
#1Harun I. Gitari (UoN: University of Nairobi)H-Index: 3
#2Ckk Gachene (UoN: University of Nairobi)H-Index: 14
Last.Elmar Schulte-Geldermann (CIP: International Potato Center)H-Index: 6
view all 7 authors...
Abstract Even though potato (Solanum tuberosum L.)-based intercropping systems are widely practised in developing countries, only a few studies have focused on legumes as the companion intercrops. This study was conducted to assess the effect of incorporating legumes into the potato production system on ground cover, soil moisture content (SMC), tuber and legume yield, potato equivalent yield (PEY), gross and net income and benefit: cost ratio (BCR). The treatments comprised of pure potato stand...
5 CitationsSource
5 CitationsSource
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