Effect of organic and conventional farming systems on nitrogen use efficiency of potato, maize and vegetables in the Central highlands of Kenya

2017 ◽  
Vol 86 ◽  
pp. 24-36 ◽  
Author(s):  
Martha W. Musyoka ◽  
Noah Adamtey ◽  
Anne W. Muriuki ◽  
Georg Cadisch
Keyword(s):  
Nitrogen Use Efficiency ◽  
Farming Systems ◽  
Conventional Farming ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Central Highlands ◽  
Organic And Conventional Farming

Nitrogen balances and nitrogen-use efficiency of different organic and conventional farming systems

2016 ◽  
Vol 105 (1) ◽  
pp. 1-23 ◽  
Author(s):  
Hung-Chun Lin ◽  
Julia A. Huber ◽  
Georg Gerl ◽  
Kurt-Jürgen Hülsbergen
Keyword(s):  
Nitrogen Use Efficiency ◽  
Farming Systems ◽  
Conventional Farming ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Organic And Conventional Farming

Nitrogen release and synchrony in organic and conventional farming systems of the Central Highlands of Kenya

2019 ◽  
Vol 113 (3) ◽  
pp. 283-305 ◽  
Author(s):  
Martha W. Musyoka ◽  
Noah Adamtey ◽  
Else K. Bünemann ◽  
Anne W. Muriuki ◽  
Edward N. Karanja ◽  
...  
Keyword(s):  
Farming Systems ◽  
Conventional Farming ◽  
Nitrogen Release ◽  
Central Highlands ◽  
Organic And Conventional Farming

scholarly journals Diversity and structure of prokaryotic communities within organic and conventional farming systems in central highlands of Kenya

PLoS ONE ◽  
2020 ◽  
Vol 15 (8) ◽  
pp. e0236574
Author(s):  
Edward Nderitu Karanja ◽  
Andreas Fliessbach ◽  
Noah Adamtey ◽  
Anne Kelly Kambura ◽  
Martha Musyoka ◽  
...  
Keyword(s):  
Farming Systems ◽  
Conventional Farming ◽  
Central Highlands ◽  
Organic And Conventional Farming

Genetic approaches to enhancing nitrogen-use efficiency (NUE) in cereals: challenges and future directions

2015 ◽  
Vol 42 (10) ◽  
pp. 921 ◽  
Author(s):  
Trevor Garnett ◽  
Darren Plett ◽  
Sigrid Heuer ◽  
Mamoru Okamoto
Keyword(s):  
Nitrogen Use Efficiency ◽  
Economic Cost ◽  
Farming Systems ◽  
Genotype By Environment Interaction ◽  
Complex Nature ◽  
Environment Interaction ◽  
Nitrogen Use ◽  
Future Directions ◽  
Use Efficiency ◽  
High Yields

Over 100 million tonnes of nitrogen (N) fertiliser are applied globally each year to maintain high yields in agricultural crops. The rising price of N fertilisers has made them a major cost for farmers. Inefficient use of N fertiliser leads to substantial environmental problems through contamination of air and water resources and can be a significant economic cost. Consequently, there is considerable need to improve the way N fertiliser is used in farming systems. The efficiency with which crops use applied N fertiliser – the nitrogen-use efficiency (NUE) – is currently quite low for cereals. This is the case in both high yielding environments and lower yielding environments characteristic of cereal growing regions of Australia. Multiple studies have attempted to identify the genetic basis of NUE, but the utility of the results is limited because of the complex nature of the trait and the magnitude of genotype by environment interaction. Transgenic approaches have been applied to improve plant NUE but with limited success, due, in part, to a combination of the complexity of the trait but also due to lack of accurate phenotyping methods. This review documents these two approaches and suggests future directions in improving cereal NUE with a focus on the Australian cereal industry.

scholarly journals Termite-Induced Injuries to Maize and Baby Corn under Organic and Conventional Farming Systems in the Central Highlands of Kenya

Insects ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 367
Author(s):  
John J. Anyango ◽  
David Bautze ◽  
Komi K. M. Fiaboe ◽  
Zipporah O. Lagat ◽  
Anne W. Muriuki ◽  
...  
Keyword(s):  
Management Practice ◽  
Farming Systems ◽  
Farming System ◽  
Conventional Farming ◽  
High Input ◽  
Whole Plant ◽  
Central Highlands ◽  
Cropping Seasons ◽  
Organic And Conventional Farming ◽  
Input Level

Termite-induced injuries to maize and baby corn were evaluated in on-going comparison experiments on organic and conventional farming systems at two trial sites in the Central Highlands of Kenya (Chuka and Thika). The farming systems were established in 2007 at two input levels: Low input level, representing subsistence farming (Conv-Low, Org-Low) and high input level, representing commercial farming (Conv-High, Org-High). Termite-induced injuries to maize and baby corn, such as tunneling the stem or lodging the whole plant were assessed over two cropping seasons. The lodging occurred exclusively at Thika. It first became apparent in the Org-Low system, with most of lodging occurring during the vegetative stage. Baby corn grown under high input systems showed increasing lodging from the late vegetative crop stage and peaked before the final harvest. Tunneling was recorded at both sites, but was generally below 5%, with no significant differences between the farming systems. Overall, the injury patterns caused by termites appear to be a function of the plant growth stage, termite colony activities, trial site, and the types and levels of fertilizer input. Thus, the management practice used in each farming system (organic or conventional) might have greater influence on crop injuries than the type of farming system itself or the termite abundance within each system.

scholarly journals Fungal diversity within organic and conventional farming systems in Central Highlands of Kenya

2020 ◽  
Vol 14 (6) ◽  
pp. 242-258
Author(s):  
Nderitu Karanja Edward ◽  
Fliessbach Andreas ◽  
Adamtey Noah ◽  
Kelly Kambura Anne ◽  
Musyoka Martha ◽  
...  
Keyword(s):  
Fungal Diversity ◽  
Farming Systems ◽  
Conventional Farming ◽  
Central Highlands ◽  
Organic And Conventional Farming
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