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Browsing Articles: Department of Water and Agricultural Resources Management by Title

Now showing items 1-20 of 202

5 Infrared Drying

Gikuru, Mwithiga; Nindo, Caleb (CRC Press, 2010-07-26)

This chapter will present the mechanism, techniques, and advantages of infrared (IR) drying for various food and agricultural products. The propagation of IR radiation from a source (considered as any material at a ...
Additive main effects and multiplicative interaction analysis of genotype x environmental interaction among sweetpotato genotypes

Mwololo, J.K.; Muturi, Phyllis W.; Mburu, M.K.; Njeru, R.W.; Kiarie, N.; Munyua, J.K.; Ateka, E.M.; Muinga, R.W.; Kapinga, R.E.; Lemaga, B. (2009-04-08)

Sweetpotato is an important food, feed and cash crop in Eastern Africa. Highly stable and adaptable genotypes are important in sweetpotato productivity and evaluation across sites would form a basis for breeding varieties ...
Adoption Determinants of Adapted Climate Smart Agriculture Technologies Among Smallholder Farmers in Machakos, Makueni, and Kitui Counties of Kenya

Muriithi, Lydia N.; Onyari, Charles N.; Mogaka, Hezron R.; Gichimu, Bernard M.; Gatumo, Geoffrey N.; Kwena, Kizito (2021-04)

The study examined the adoption determinants of adapted climate smart agriculture (CSA) technologies among smallholder farmers. A multi-stage sampling procedure was used to select a total sample of 384 households. Percentages ...
Agroforestry in the drylands of eastern Africa: a call to action

Zeila, Abdi; Jama, Bashir (World Agroforestry Centre, 2005)

Drylands in eastern Africa typically suffer from unsustainable land uses that have evolved in the recent past. This paper reports on how agroforestry practices can contribute to sustainable land use in drylands drawing ...
Agronomic Performance of Single Crosses of Maize in Kiambu and Embu Counties of Kenya

Njoka, Fredrick M.; Kariuki, Jeniffer M. (2017-06)

Aims: This study was conducted to determine the agronomic performance of respective maize single crosses in different environments in varying soil and climatic zones in Kenya. Methodology: The trials were conducted at ...
Agronomic Performance of three most Popular Commercial Watermelon Cultivars in Kenya as Compared to one newly introduced cultivar and one local Landrace grown on Dystric Nitisols under Sub- Humid Tropical Conditions

Gichimu, Bernard M.; Owuor, B. O.; Dida, M. M. (Asian Research Publishing Network (ARPN)., 2008-11)

Agronomic performance trial involving five cultivated watermelon accessions available in Kenya was conducted at Maseno University Research Fields for two seasons between year 2007 and 2008. The accessions included three ...
Alley cropping of maize with calliandra and leucaena in the subhumid highlands of Kenya Part 2. Biomass decomposition, N mineralization, and N uptake by maize

Mugendi, Daniel N.; Nair, P.K.; Mugwe, Jayne; O'Neill, M.K.; Swift, M.J.; Woomer, P. (Kluwer Academic Publishers, 1999-06)

A major challenge in developing agroforestry approaches that utilize tree-leaf biomass for provision of N to crops is to ensure synchrony between the N released from decomposing prunings and N demand by crops. A study was ...
Alternative methods of harvesting and storage of grass biomass in a semi-arid region

Gikuru, Mwithiga; Mazwiduma, P.J.; Tsopito, C.M. (Academic Journals, 2012-04-12)

Biomass is considered a potential feedstock for many renewable energy production systems and interest especially in grass production has increased markedly in the last two decades. The present work focuses on grass biomass ...
Analysis of Fish Fillet Drying Rates under Three Solar Energy Drying Systems

Gikuru, Mwithiga; Mwangi, Samuel Gathuki (2009-02-20)

A small Box type solar dryer with controllable air inlet was designed and tested. The dryer had a mild steel absorber plate and a polyvinyl chloride (pvc) transparent cover and could be adjusted to allow variation in airflow ...
Antimicrobial Activity of Foliar Fertilizer Formulations and their Effect on Ice Nucleation Activity of Pseudomonas syringae Pv. garcae Van Hall; the Causal Agent of Bacterial Blight of Coffee

Mugiira, R. B.; Arama, P. F.; Macharia, J. M.; Gichimu, Bernard M. (Academic Journals, 2011)

This study was carried out with the broad objective of assessing the potential for control of Bacterial Blight of Coffee (BBC) using foliar fertilizer applications to Inhibit Ice Nucleation Activity (INA) of the causative ...
Applicability of conservation agriculture for climate change adaptation in Rwanda’s situation

Kabirigi, M.; Musana, B.; Ngetich, F.K.; Mugwe, Jayne; Mukuralinda, A.; Nabahungu, N. L. (Academic Journals, 2015-09)

Improving food security and environmental conservation should be the main targets of innovative farming systems. Conservation agriculture (CA), based on minimum tillage, crop residue retention and crop rotations has been ...
Assessment of genetic variability of passion fruit using simple sequence repeat (SSR) markers

Chepkoech, Emmy; Rotich, Felix; Alkamoi, Bonface (Integrity, 2020-10)

Purple passion fruit (Passiflora edulis Sims) is the third most important fruit crop in Kenya that is produced for both local and export markets. In Uasin Gishu County, passion fruit had recently emerged as an important ...
Available technologies to replenish soil fertility in East Africa

Okalebo, J.R.; Othieno, C.O.; Woomer, P.L.; Karanja, N.K.; Semoka, J.R.; Bekunda, M.A.; Mugendi, Daniel N.; Muasya, R.M. (Springer, 2006)

Low inherent soil fertility in the highly weathered and leached soils largely accounts for low and unsustained crop yields in most African countries. But in particular, the major nutrients, nitrogen (N) and phosphorus (P), ...
Azolla Fern in Mwea Irrigation Scheme and Its Potential Nitrogen Contribution in Paddy Rice Production

Oyange, W. A.; Chemining’wa, G. N.; Kanya, J. I.; Njiruh, Nthakanio P. (Canadian Center of Science and Education, 2019-11)

Azolla fern is invasive in Mwea Irrigation Scheme in Kenya and its management in paddy rice fields is a challenge to farmers. A survey was undertaken to establish farmer’s knowledge and potential nitrogen contribution ...
Characterization of Kenyan French Bean genotypes into gene pool affiliations using allele specific markers

Arunga, Esther E.; Odikara, Shadrack O. (ACADEMIC JOURNALS, 2020-07)

French bean (Phaseolus vulgaris L.) is a major export crop in Kenya where it serves as a cash crop for smallholder farmers and a source of employment. However, there is limited information on characterization of available ...
Characterization of the Volatile Components of Essential Oils of Selected Plants in Kenya

Mugao, Lydia G.; Gichimu, Bernard M.; Muturi, Phyllis W.; Mukono, Simon T. (Hindawi, 2020-12)

Essential oils are secondary metabolites that plants produce for protection from pests and predators, attraction of pollinators, and seed dispersal. )e oils are made up of a mixture of compounds that give a characteristic ...
Characterization of Uromyces appendiculatus isolates collected from snap bean growing areas in Kenya

Arunga, Ester E.; Ochuodho, J.O; Kinyua, M.G.; Owuoche, J.O. (Academic Journals, 2012-11-02)

Bean rust (Uromyces appendiculatus (Pers.:Pers.) Unger var. appendiculatus) is one of the most devastating and variable pathogens of common bean (Phaseolus vulgaris L.) worldwide that can cause total crop loss. Characterization ...
Coffee Breeding in Kenya: Achievements, Challenges and Current Focus

Gichimu, Bernard M. (2015)

Coffee production in Kenya is seriously constrained by two fungal diseases namely Coffee Berry Disease (CBD) caused by Colletotrichum kahawae (Waller & Bridge) and Coffee Leaf Rust (CLR) caused by Hemileia vastatrix (Berk. ...
Coffee Drying in a Rotary Conduction-Type Heating Unit

Gikuru, Mwithiga; Jindal, V.K. (Blackwell Publishing Ltd, 2004-06-01)

Parchment coffee (Arabica) was dried from an initial moisture content of about 90% to 10% dry basis (db) in a recirculating rotary conduction type heating unit at controlled plenum temperatures of 100, 120 and 140C or ...
Coffee Sustainability in Kenya: Role Played by Improved Varieties

Gichimu, Bernard M. (2015)

Coffee production in Kenya has been sinking since 1980s. The condition has been worsened by climate change phenomenon which has brought new production challenges in recent years. The biggest challenge is the changing ...

Browsing Articles: Department of Water and Agricultural Resources Management by Title

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