Welcome to the International Institute of Tropical Agriculture Research Repository
What would you like to view today?
Norms for multivariate diagnosis of nutrient imbalance in the east African highland bananas (Musa spp. AAA)
Asten, Piet J.A. van
MetadataShow full item record
Despite low yields and soil fertility problems, fertilizer use in the East African Highland banana (AAA-EA) production is absent. High fertilizer costs increase the need for site-specific fertilizer recommendations that address deficiencies. This study aimed to derive and compare norms for AAA-EA bananas, using Compositional Nutrient Diagnosis (CND), Diagnosis and Recommendation Integrated System (DRIS), and a DRIS that includes a filling value (DRIS-Rd), and study nutrient interactions. Data on foliar nitrogen, phosphorus, potassium, calcium, and magnesium concentrations, and plant performance were obtained from 300 plots in Uganda. CND indices were closely related to DRIS and DRIS-Rd indices (R2 > 0.965). Four nutrient interactions were common in both low and high bunch weight subpopulations. Although the three approaches can be used to determine nutrient imbalances in AAA-EA bananas, we recommend CND for ease of use. Diagnosis of nutrient deficiencies should be based on methods that identify plant nutritional imbalances.
Multi standard citation
Permanent link to this itemhttps://hdl.handle.net/20.500.12478/1672
Digital Object Identifier (DOI)
Showing items related by title, author, creator and subject.
Fertilizer micro-dosing increases crop yield in the Sahelian low-input cropping system: a success with a shadow Ibrahim, A.; Abaidoo, R.C.; Fatondji, D.; Opoku, A. (2016)Over the years, a scarcity of information on nutrient gains or losses has led to overemphasis being placed on crop yields and economic income as the direct benefits from fertilizer micro-dosing technology. There is increasing concern about the sustainability of this technology in smallholder Sahelian cropping systems. This study was designed in the 2013 and 2014 cropping seasons to establish nutrient balances under fertilizer micro-dosing technology and their implications on soil nutrient stocks. ...
The influence of the topographic position within highlands of Western Rwanda on the interactions between banana (Musa spp. AAAEA), parasitic nematodes and soil factors Gaidashova, S.V.; Asten, Piet J.A. van; Delvaux, B.; Waele, D. de (2010-06-28)Soil properties vary according to the topography. They affect water uptake and root exploration in the soil. Consequently, they may also influence the spread of plant–parasitic nematodes. This study reports on the effect of toposequence-related variations in soil on banana yields, foliar nutrient status, and nematode impact. Twenty banana plots were visited within 6 hills/valleys at each of the three toposequence positions: valley bottom, mid-slope and crest. Important variability in plant growth, ...
Approaches to reinforce crop productivity under rain-fed conditions in sub-humid environments in Sub-Saharan Africa Chikowo, Regis; Zingore, Shamie; Nyamangara, Justice; Bekunda, Mateete A.; Messina, Joseph; Snapp, Sieglinde S. (Springer International Publishing, 2015-09-03)Smallholder farming in much of Sub-Saharan Africa is rain-fed and thus exposed to rainfall variability. Among the climate variables, rainfall is projected to decline and have an overriding effect on crop productivity. With little opportunity for supplementary irrigation for the majority of farmers, a plausible strategy to maintain crop production under water-limited conditions includes balanced nutrient management for enhancing efficiency of use of limited soil water. Co-application of judicious ...