Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 532076
Title Identifying viable nutrient management interventions at the farm level : The case of smallholder organic Basmati rice production in Uttarakhand, India
Author(s) Ditzler, L.; Breland, T.A.; Francis, C.; Chakraborty, M.; Singh, D.K.; Srivastava, A.; Eyhorn, F.; Groot, J.C.J.; Six, J.; Decock, C.
Source Agricultural Systems 161 (2018). - ISSN 0308-521X - p. 61 - 71.
DOI http://dx.doi.org/10.1016/j.agsy.2017.12.010
Department(s) Farming Systems Ecology
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Basmati rice - Biogas slurry - Farmyard manure - Green manure - Manure management - Nutrient management
Abstract

Smallholder farmers may gain notable livelihood benefits by participating in organic value chains. However, whether there are enough resources available to maintain organic production sustainably on smallholder farms in resource-poor regions is of concern. If not balanced by sufficient inputs, continual nutrient export via commodity crops will result in nutrient mining, and livelihood improvements gained by participating in profitable value chains could be negated by soil degradation in the long term. The objectives of this study were to test an integrated approach for understanding the farm-level impacts of subsystem nutrient management actions and to identify locally viable interventions for increased nutrient supply and recycling. We employ a systems analysis methodology to address the nutrient gaps on smallholder farms in Uttarakhand, India producing organic Basmati rice for an international value chain. Farmers here rely on few livestock (three to five head of cattle ha− 1) to supply nutrient inputs and are achieving smaller than potential Basmati yields. We surveyed 42 small farms (< 3.5 ha, average annual income around $1000 year− 1) and analyzed available manure stocks for nutrient contents in order to trace the farm-level flow of manure nutrients, identify vectors of avoidable nutrient loss, and systematically identify locally relevant and feasible improvements. The interventions identified as viable were reducing nutrient losses through simple and relatively cheap manure management modifications (i.e. using straw bedding to capture livestock urine, covering farmyard manure stockpiles with plastic sheeting, enclosed biogas slurry storage, and using biogas slurry for improved compost production), in situ green manuring, and purchasing farmyard manure. Cost–benefit analyses predicted that proposed interventions could increase farmers’ net profit by up to 40% while also addressing problematic nutrient gaps. While our results pertain specifically to Uttarakhand, we found that our integrated research approach worked well to address the problem of nutrient gaps on resource-poor smallholder organic farms, and believe that the strategy could be used with equal success to address similar problems in other regions.

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