Uday Nidumolu

• PhD
• Researcher at The Commonwealth Scientific and Industrial Research Organisation

The boundary between land suitable for low rainfall grain cropping and the arid interior suitable for extensive grazing has a history in South Australia dating back to Goyder in the 1860s and in Western Australia to Brookman in the 1900s. Historical and future shifts in climatically determined edges of cropping regions focus discussion on how farme...

Water scarcity and related climate volatility are growing constraints on agricultural production landscapes around the world. While the adaptation options available are often dictated by system context, in many places broad-scale transformations are occurring in response to water-related pressures. We sought contributions from across regions, agric...

We describe a research-for-development (R4D) strategy developed to address how investments and interventions in agricultural intensification as a means to achieve community development can be designed to be more socially inclusive and equitable. We draw on results from a 5-year project-Promoting socially inclusive and sustainable agricultural inten...

Climate is one of the key factors determining the suitability of land for agricultural production and influencing the spatial transition between grazing and cropping-dominated farming systems in Africa. We identified the climate indices that best align with the margin between the Agropastoral and Pastoral Farming Systems in the historical climate (...

Background Integration of traditional knowledge (TK) to decision making in agriculture is a continued practice of the smallholder farmers in the tropics. There is a knowledge gap in the use of TK in weather or climate prediction by farmers to minimize climate risks. Hence, a field survey was conducted using a pre‐tested questionnaire coupled with k...

The Working Group II contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) provides a comprehensive assessment of the scientific literature relevant to climate change impacts, adaptation and vulnerability. The report recognizes the interactions of climate, ecosystems and biodiversity, and human societie...

CONTEXT In northern West Bengal and southern Bangladesh, Rabi crops, sown in winter and harvested in the spring, are an important source of income and nutrition for the target communities. In the study areas, NGOs and extension services have been engaging with farming communities on selecting suitable crops for the upcoming season. This engagement...

Economic losses due to crop damage caused by frost in Australia are estimated to be many hundreds of millions of dollars. In broadacre cropping, pre-sowing management to alleviate frost risk, and timely post-frost decisions rely on locally relevant information about the extent and severity of frosts. Yet temperature information currently available...

Using participatory action research methods, we co-developed climate risk management approaches with participating farmers as part of a large project in India on climate adaptation to climate change in Asia (ACCA). The key components of this work involved village level meteorological data recording and reporting, formation and development of farmer...

Climate variability is a key source of livelihood risks faced by smallholder farmers in drier environments in many developing countries. Climate information provided on seasonal time-scales can sometimes improve agricultural decision-making. However, there are many barriers to the effective dissemination, communication and use of such information o...

Frosts and extreme minimum temperature events cause significant damage to grapevines. In the Victorian vine growing regions of Australia, these events may cause complete wipe-out of a season's grape production, and millions of dollars of losses. Frost is an important risk to be managed by viticulturalists, and is likely to change under future clima...

Crop and water productivities of rice-based cropping systems and cropping patterns in the irrigated lowlands of Sri Lanka have not been researched to the degree warranted given their significance as critical food sources. In order to reduce this knowledge gap, we simulated the water requirement for rice, maize, and mungbean under rice-based croppin...

As part of part of a special issue on natural hazards, this paper explores recent changes in Australian minimum temperature extremes. Using minimum temperature data from the 112 observation locations making up the Australian Climate Observations Reference Network – Surface Air Temperature (ACORN-SAT) data set, as well as the Scientific Information...

Rice (Oryza sativa L.) production in Sri Lanka is heavily dependent on the rainfall distribution pattern of the cultivating season. Estimation of the variation in yield and resource use efficiency of commonly grown rice varieties will be of immense importance when predicting yields under variable and changing climate. In this context, a modelling a...

Climate risk assessment in cropping is generally undertaken in a top-down approach using climate records while critical farmer experience is often not accounted for. In the present study, set in south India, farmer experience of climate risk is integrated in a bottom-up participatory approach with climate data analysis. Crop calendars are used as a...

Climate is one of the main determinants of agricultural productivity in Sri Lanka. Of the major climatic parameters, temperature, rainfall, and humidity are of special significance, as these cause a substantial impact on the agricultural productivity of the country. Consequently, farming systems and agronomic practices in most agricultural regions...

Rice (Oryza sativa L.) production in Sri Lanka is heavily dependent on the rainfall distribution pattern of the cultivating season. Estimation of the variation in yield and resource use efficiency of commonly grown rice varieties will be of immense importance when predicting yields under variable and changing climate. In this context, a modelling a...

The ‘Adaptation to Climate Change in Asia’ (ACCA) project brings together researchers, collaborating farmers, extensionists and policymakers in Bangladesh, Cambodia, India and Lao People’s Democratic Republic (PDR) to develop and evaluate farming practices to help smallholders reduce the impact of an increasingly variable climate. Locally promising...

Rice (Oryza sativa L.) cultivation in Sri Lanka is restricted by limited water availability. Increased variability of seasonal rainfall as a result of climate change will further exacerbate risk in rice cultivation. Knowing the onset of rainfall through forecasts, adjusting planting date based on the predicted rainfall onset, and efficient irrig...

The Murray dairy region produces approximately 1.85 billion litres of milk each year, representing about 20 % of Australia's total annual milk production. An ongoing production challenge in this region is the management of the impacts of heat stress during spring and summer. An increase in the frequency and severity of extreme temperature events du...

The drier inland edge of the Australian grain belt, where wheat cropping transitions into extensive grazing, is an important economic and ecological margin. This margin is determined primarily by climate rather than topography or soil type. In South Australia a line drawn by the Surveyor General George Goyder in 1865 between land that was reliable...

Land-based primary industries depend on the health of ecosystems that provide ecosystem services (ES) such as fresh water, pollination, and natural hazard protection among others. Degradation of ES can pose a number of risks to businesses and the well-being of rural populations. At the same time these ecosystem-based risks create new business oppor...

Reunion Island, situated in the Indian Ocean, presents a unique case study for modelling regional bio-economic parameters of the dairy industry. It is a good example of a closed system for several parameters of the model such as movement of animals, labour, consumption and available land. The existence of several agro-ecological zones from tropical...

Réunion Island is a French overseas territory in the Indian Ocean which provides a distinctive research opportunity to develop a regional bio-economic model for the dairy industry. The model aims to address questions related to social, economic and environmental priorities of the local dairy industry. Since Reunion is an island it is a natural clos...

This project identified the potential impacts of climate change on apple and pear production. Climate modelling was used to assess the potential climate risks across all Australian growing regions. It provided a summary of regionally-specific adaptation and management practices for changes in temperature, water availability and the impacts of pests...

In the first paper in this series [Nelson, R., Kokic, P., Crimp, S., Martin, P., Meinke, H., Howden, S.M. (2010, this issue)], we concluded that hazard/impact modelling needs to be integrated with holistic measures of adaptive capacity in order to provide policy-relevant insights into the multiple and emergent dimensions of vulnerability. In this p...

This article was submitted without an abstract, please refer to the full-text PDF file.

This article was submitted without an abstract, please refer to the full-text PDF file.

In the context of market liberalization and in order to avoid trade distortions, European farmers risk experiencing a restriction of subsidies for market products. Moreover, policy makers cannot underestimate the public concerns about the non-productive functions of agriculture, such as environmental management. The current study illustrates differ...

Wheat growth in south-eastern Australia shows a strong seasonal pattern associated with a variable 'break' of season, a dry and usually warm season finish, and poor buffering from limited soil water storage. Our main aim was to interpret seasonal growth trajectories using Normalised Differential Vegetation Index (NDVI) time series for the period Ap...

Australia's agricultural industries are heavily impacted by both climate variability and change. The variable nature of Australian rainfall has had a strong role to play in the location and success of many agricultural enterprises. Developing flexible, proactive strategies for managing year-to-year climate variations within farming communities, and...

Réunion Island, situated in the Indian Ocean, presents a unique case study to model regional bio-economic parameters of the dairy industry. It is a good example of a closed system for movement of animals, available labour, consumption of products, and available land. The present study models the dairy sector at a regional (island) level, in close c...

Studies on decision-making processes are generally aimed at identifying farmers' needs and predicting farmers' reactions to technical innovations. In the present paper we study these decision-making processes, with reference to dairy farms, to build a whole-farm computer model (WFM) which simulates farmers' actions. In this study, (i) a multi-tool...

An Interactive Multiple Goal Linear Programming (IMGLP) model is developed that considers objectives of multiple stakeholders, i.e. different farmer groups, district agricultural officers and agricultural scientists for agricultural land use analysis. The analysis focuses on crop selection; considering irrigated and non-irrigated crops such as rice...

Traditional land use planning approaches relied significantly on biophysical data and followed a hierarchical top-down approach. The component of primary stakeholders as being critical to the success of implementing such plans is often ignored. In India, a large-scale geo-information project called “integrated mission for sustainable development (I...

In a case study, we demonstrate fuzzy modeling of farmers' knowledge (FK) for agricultural land suitability classification using GIS. Capture of FK was through rapid rural participatory approach. The farmer respondents consider, in order of decreasing importance, cropping season, soil color, soil texture, soil depth and slope as factors of suitabil...

Maps of land-use classes and soil series were analysed to identify areas having specific priorities with respect to agricultural land-use analysis. Remote sensing data supported by field investigations was used to generate land-use and soil maps. Present relationships between soils and associated land cover/use are analysed and patterns in these re...

Maps of land use classes and soil series were analysed to identify areas having specific priorities with respect to agricultural land use analysis under the project Integrated Mission for Sustainable Development (IMSD) in India. IMSD used remote sensing data supported by field investigations to generate land use and soil maps. At present, using GIS...

Keywords: Land use analysis, GIS, remote sensing, yield gaps, regression modeis, crop management improvement, crop selection, conservation, multiple goal optimisation model, stakeholder communication matrix, fuzzy modelling, soft systems methodology Remotely-sensed data coupled with GIS-derived biophysical data have been key components in land use...

Of a total area of 329 million hectares in India, about 57 per cent is in various stages of degradation. This is due to the pressure of a growing population; increased demand for food, fodder and fuel-wood, combined with intensive industrial activity. Urgent efforts need to be directed at conservation of the shrinking land resource base which, at t...

"Propositions" inserted. Thesis (doctoral)--Wageningen Universiteit, 2004. Includes bibliographical references.