Browsing Journal Articles by Author "Njiruh, Nthakanio P."
Now showing items 1-18 of 18
-
Arbuscular Mycorrhizal Fungi Colonization in the Rhizosphere of Aspilia pruliseta Schweif. ext Schweif in the Semiarid Eastern Kenya
Muchoka, James P.; Mugendi, Daniel N.; Njiruh, Nthakanio P.; Onyari, Charles N.; Mbugua, Paul K.; Njeru, Ezekiel M. (Sage, 2020-09)The use of arbuscular mycorrhizal fungi (AMF) to enhance soil phosphate uptake is a biological technique considered to cure phosphate deficiency in soils. This study investigated association of Aspilia pruliseta Schweif ... -
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 ... -
Demarcating day-light-length from temperature effects in PGMS rice using back tracking method.
Njiruh, Nthakanio P.; Qingzhong, Xue (2014)Two near isogenic rice lines ZAU11S106 (Photoperiod sensitive genic male sterile) and ZAU11F121(a ZAU11S106 whose PGMS gene has undergone reverse mutation to become a non-PGMS) were used. These two lines were studied to ... -
Effect of time of Azolla incorporation and inorganic fertilizer application on growth and yield of Basmati rice
Oyange, W. A.; Chemining’wa, G. N.; Kanya, J. I.; Njiruh, Nthakanio P. (Academic Journals, 2020-03)Azolla tissue contains 5% N, which is slowly released into the soil upon decomposition. Timing of incorporation is therefore important for maximum benefit to a crop. The effect of time to incorporate Azolla biomass on ... -
Evaluation of photoperiod and thermosensitive genic male sterile lines for hybrid rice seeds production in Kenya
Kanya, James I.; Njiruh, Nthakanio P.; Kimani, John M.; Wajogu, Raphael K.; Kariuki, Simon (2013)Photo–thermo-sensitive genic male sterile (P(T)GMS) rice is a new hybrid rice technology that uses prolonged light length and high temperatures to induce sterility. This technology is being introduced in Kenya but such ... -
Molecular Characterisation and Antimicrobial Resistance Patterns of Escherichia Coliisolates from Goats Slaughtered in Parts of Kenya
Njiruh, Nthakanio P.; Njoroge, S.; Muigai, A.W.T.; Kariuki, S. (2013-02)Objective: To determine the antibiotic resistance patterns of pathogenic Escherichia coli on goat meat carcass at Huruma and Kiserian abattoirs in Kenya. Design: Laboratory based study. Setting: Huruma and Kiserian ... -
Molecular characterization and Antimicrobial Resistance Patterns of Escherichia Coli Isolates from Goats Slaughtered In Parts of Kenya
Njiruh, Nthakanio P.; Kariuki, S.; Njoroge, S.; Muigai, A.W.T. (Research Gate, 2013-01)Objective: To determine the antibiotic resistance patterns of pathogenic Escherichia coli on goat meat carcass at Huruma and Kiserian abattoirs in Kenya. Design: Laboratory based study. Setting: Huruma and Kiserian ... -
Morphological and Molecular Characterization of Azolla Accessions in Kenya
Oyange, W. A.; Kanya, J. I.; Chemining’wa, G. N.; Njiruh, Nthakanio P. (Tropical and Subtropical Agroecosystems, 2020-05)Background. Azolla Lam., a mosquito fern, is invasive in major rice growing Schemes in Kenya, where it clogs irrigation canals and forms dense mats in paddy fields. However, the species of Azolla has not been established. ... -
Mycorrhiza co-association with Aspilia pruliseta Schweif. and phosphorus uptake effects on growth of gadam sorghum in the semi-arid lower Eastern Kenya
Muchoka, James; Mugendi, Daniel N.; Njiruh, Nthakanio P.; Onyari, Charles N.; Njeru, E. M. (Academic Journals, 2020-08)Mycorrhiza fungi are important components of soil microbiota in the rhizosphere and greatly influence the uptake of mineral elements by plants. A greenhouse experiment was conducted at the University of Embu to evaluate ... -
Partial Nucleotide Sequences of Sweet Potato Leaf Curl Virus Occurring in Kenya and its Phylogenetic Relationship with other Members of Begomoviruses
Maina, S.; Miano, W.; Runo, S.M.; John, I.; Mbogo, E.; Monjero, E.; Njiruh, Nthakanio P. (2012-11)Sweet potato leaf curl virus has been reported in different sweet potato growing regions of Kenya. Partial nucleotide sequences of Kenyan Sweet potato leaf curl virus isolates were compared with other isolates from different ... -
Populations of Biomphalaria spp. Snails Isolates in Kenya Show Variable Resistance to Schistosome Infection
Ngigi, D. M.; Githui, E. K.; Aman, R. A.; Wanjala, F. M.; Stella, R. K.; Njiruh, Nthakanio P.; Nguu, E. K. (Trade Science Inc., 2018-10)Fresh water snails of genus Biomphlaria, Bulinus and Ocomelinia are important vectors for human schistosomiasis. Human contact patterns with water infested with cercaria are important factors in transmission of schistosomiasis ... -
Potential of Bio-/Agro-Terrorism in Kenya
Wakhungu, Jacob; Njiruh, Nthakanio P. (2015-08)The growing Biotechnology and Bio-Engineering may have by commensurate measure contributed to bio-terrorism. This has led to stringent measures to deal with it especially, in developed economies like the ... -
Production of Hybrid Basmati Rice in Kenya: Progress and Challenges
Njiruh, Nthakanio P.; Kanya, James I.; Kimani, John M.; Wajogu, Raphael (2013)Photoperiod sensitive genic male sterile (PGMS) and Thermosensitive genic male sterile (TGMS) rice varieties require a long day light length and high temperature respectively growth conditions for them to be completely ... -
Programmed cell death-like behavior in photoperiod-sensitive genic male sterile (PGMS) rice
Njiruh, Nthakanio P.; Qingzhong, Xue (Academic Journals, 2011-04)In photoperiod-sensitive genic male sterile rice (Oryza sativa L.) pollen abort in long day and high temperature, and revert to fertility in short day length and low temperature growth conditions. This type of control of ... -
Segregation disortion of anthocyanin morphological marker in F2 population of cross between basmati and environment genic male sterile rice lines
Njiruh, Nthakanio P.; Kanya, James I.; Kimani, John M.; Wanjogu, Raphael K.; Kariuki, Simon N. (2013)Basmati rice (Oryza sativa L.) is preferred by many Kenyans yet its yield per hectare is low. This challenge led to initiation of Basmati hybrid rice project in Kenya with a goal of leaping yield benefits of heterosis. ... -
Sensitivity of microscopy compared to molecular diagnosis of p. Falciparum: implications on malaria treatment in epidemic areas in kenya
Wangai, L.N.; Karau, M.G.; Njiruh, Nthakanio P.; Sabah, O.; Kimani, F.T.; Magoma, G.; Kiambo, N. (2011)Detection of Plasmodium species by microscopy has been the gold standard for diagnosis of malaria for more than a century. Despite the fact that there is a significant decline in the number of positive cases reported from ... -
Tracking the Expression of Photosensitive Genic Male Sterility Gene in Rice
Njiruh, Nthakanio P.; Xue, Qingzhong (2013-09)Photoperiod sensitive genic male sterile rice lines contain genes that induce complete male sterility in high temperature and long day light length period, but are male fertile under low temperature ... -
Tracking the expression of photosensitive genic male sterility genes in rice
Njiruh, Nthakanio P.; Qingzhong, Xue (Academic Journals, 2013-11)Photoperiod sensitive genic male sterile rice lines contain genes that induce complete sterility in high temperature and long day light length period, and revert to fertility in optimum low temperature and short day light ...