SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Amarasinghe, Upali A.; Shah, Tushaar; Turral, Hugh; Anand, B.K..

With a rapidly expanding economy many changes are taking place in India today. The business-as-usual (BAU) scenario, which assumes the continuation of current trends of key water demand drivers, will meet the future food demand. However, it leads to a severe regional water crisis by 2050, where many river basins will reach closure, will be physically water-scarce and will have regions with severely overexploited groundwater resources. While the alternative scenarios of water demand show both optimistic and pessimistic water futures, the scenario with additional productivity growth is the most optimistic, with significant scope for reducing future water demand.

Tipo: Report

Palavras-chave: Water demand; Water supply; Population growth; Crop production; Crop yield; Groundwater; Irrigation; Food security; Crop Production/Industries; Food Security and Poverty; Resource /Energy Economics and Policy.

Ano: 2007

URL: http://purl.umn.edu/44522

Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand

Saleth, Rathinasamy Maria; Inocencio, Arlene; Noble, Andrew D.; Ruaysoongnern, Sawaeng.

Declining productivity of agricultural soils in Northeast Thailand is a challenge facing land managers and farmers. A program was initiated in 2002 to investigate the potential role of incorporating clay-based materials into degraded soils as a means of enhancing productivity. This research report attempts to provide an ex-post assessment of the field level impact and economic viability of this approach, using the empirically derived estimates of the average income impacts that the application of bentonite or clay technology has generated among farm communities in Northeast Thailand. From an exclusive IWMI perspective, the impact evaluation suggests that the program has a net present value (NPV) of US$0.41 million with a benefit-cost ratio (BCR) of 2.44...

Tipo: Report

Palavras-chave: Soil improvement; Impact assessment; Research projects; Soil fertility; Sandy soils; Water holding capacity; Clay soils; Soil water relations; Soil management; Farming systems; Crop yield; Vegetable crops; Rice; Sorghum; Models; Statistical methods; Cost benefit analysis; Economic analysis; Economic aspects; Thailand; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.

Ano: 2009

URL: http://purl.umn.edu/53064

An analysis of the bottlenecks affecting the production and deployment of maize seed in Eastern and Southern Africa

Langyintuo, Augustine S.; Mwangi, Wilfred; Diallo, Alpha O.; MacRobert, John F.; Dixon, John; Banziger, Marianne.

The publication describes outcomes of a study conducted in 2007/08 to analyze the bottlenecks affecting the production and deployment of maize seed in eastern and southern Africa. The objectives of the study were to provide a better understanding of the factors limiting the production and deployment of improved maize seed in Africa, and to contribute to increasing the efficiency of variety release, seed production and seed dissemination for new drought tolerant maize varieties. The study identified a number of institutional bottlenecks affecting the maize seed value chain, in particular in the area of policy, credit availability, seed production, germplasm and marketing. To address these bottlenecks and improve the efficiency of seed production and...

Tipo: Report

Palavras-chave: Seed production; Seed industry; Commodity markets; Marketing; Maize; Zea mays; Agricultural products; Yields; Crop yield; Crop Production/Industries; E10; E16; E21; E70; F03.

Ano: 2008

URL: http://purl.umn.edu/56189

Sensitivity of Carbon Emission Estimates from Indirect Land-Use Change

Dumortier, Jerome; Hayes, Dermot J.; Carriquiry, Miguel A.; Dong, Fengxia; Du, Xiaodong; Elobeid, Amani E.; Fabiosa, Jacinto F.; Tokgoz, Simla.

We analyze the sensitivity of greenhouse gas (GHG) emissions from land-use change to modifications in assumptions concerning crop area, yield, and deforestation. For this purpose, we run a modified version of the Center for Agricultural and Rural Development (CARD) Agricultural Outlook Model, which was used previously to assess the impacts of energy price increases and biofuel policy changes on land conversion. To calculate the GHG implications of agricultural activity, we use GreenAgSiM, a model developed to evaluate emissions from land conversion and agricultural production. Both models are applied to scenarios that lead to higher US ethanol production. The results are contrasted with the findings of Searchinger et al., and we explain the role of model...

Impact of management interventions on the performance of five irrigation schemes in Sri Lanka

Palavras-chave: Biofuel; Crop yield; Greenhouse gas emissions; Indirect land-use change.; Agricultural and Food Policy; Crop Production/Industries; Land Economics/Use; Resource /Energy Economics and Policy.

Ano: 2009

URL: http://purl.umn.edu/51945

Imbulana, K.A.U.S.; Merrey, Douglas J..

This working paper is the outcome of a data collection process initiated under the advice of Dr. Shigeo Yashima of the International Irrigation Management Institute (IIMI). The objective of this data collection process was to make a preliminary assessment of irrigation performance in Sri Lanka using irrigation systems with different backgrounds to identify areas for further research.

Impact of management interventions on the performance of five irrigation schemes in Sri Lanka

Palavras-chave: Irrigation programs; Performance evaluation; Irrigation management; Intervention; Irrigation systems; Monitoring; Performance indexes; History; Farmers associations; Farmer participation; Farmer-agency interactions; Communication; Organizations; Water potential; Rice; Crop yield; Water supply; Land productivity; Rain; Data collection; Farm Management; Institutional and Behavioral Economics; Land Economics/Use.

Ano: 1995

URL: http://purl.umn.edu/113609

Imbulana, K. A. U. S.; Merrey, D. J..

Institutional changes to reduce land preparation delay in the North Central Province of Sri Lanka.

Palavras-chave: Irrigation programs; Performance evaluation; Performance indexes; Irrigation systems; Farmers associations; Farmer participation; Farmer-agency interactions; Water potential; Rice; Crop yield; Land productivity; Data collection; Crop Production/Industries; Farm Management; Land Economics/Use.

Ano: 1995

URL: http://purl.umn.edu/113605

Loeve, Ronald; Somaratne, Pallewatte G.; Ariyaratne, Badugodahewa Ranjith; Anputhas, Markandu; Jinapala, Kiribandage.

Although many irrigation systems in the dry zone of Sri Lanka have water shortage problems, water consumption is very high during land preparation. This paper analyzes the impact of institutional interventions on efficient water management, especially during the land preparation period. It provides a comprehensive understanding of the factors behind prolonged periods of land preparation so that system managers and farmers communities can develop appropriate interventions to reduce water consumption.

An assessment of the Small-Scale Irrigation Management Turnover Program in Indonesia

Palavras-chave: Institutional development; Irrigation systems; Tillage; Crop yield; Rice; Land tenure; Crop Production/Industries; Institutional and Behavioral Economics.

Ano: 2004

URL: http://purl.umn.edu/92410

Vermillion, Douglas Lynn; Samad, Madar; Pusposutardjo, Suprodjo; Arif, Sigit S.; Rochdyanto, Saifal.

Examines the extent to which the Government of Indonesia's aspirations were realized through turnover program adopted in 1987. The impacts of management turnover on irrigation management and irrigated agriculture in selected systems in West and Central Java are analyzed. This study is part of a comparative research program to examine the impacts of irrigation management transfer in several countries using a common methodology.

Tipo: Report

Palavras-chave: Irrigation management; Privatization; Small scale systems; Irrigation systems; Water distribution; Performance; Operations; Maintenance; Productivity; Crop yield; Economic impact; Costs; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics.

Ano: 2000

URL: http://purl.umn.edu/44574

Identifying the Impact of Weather Variation on Crop Yield in the Northern Plains

What are the effects of climate change on agriculture in North East Central Europe?

Jiang, Yong; Koo, Won W..

Tipo: Conference Paper or Presentation

Palavras-chave: Weather; Production; Crop yield; Agriculture; Economics; Crop Production/Industries; Land Economics/Use; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.

Ano: 2011

URL: http://purl.umn.edu/104508

Eulenstein, Frank; Willms, Matthias; Schindler, Uwe; Muller, Lothar; Mirschel, Wilfried; Dalchow, Claus; Augustin, Jurgen; Wiggering, Hubert.

Global and climate changes influence the basic conditions for agriculture and so there is not only a demand for a consequent climate protection but also for an adaptation of agriculture to these global changing conditions. For the whole "Maerkisch-Oderland" district (60x40 km) within the moraine landscape of North-East-Germany mainly used for agriculture water balance, nitrogen and sulphur loads as well as crop yields are calculated for two land use and climate scenarios. The comparison between the Scenario2050 and the Scenario2000 reveals significant changes of the water balance (decrease in percolation water, increase in actual evapotranspiration) as well as the concentration of the examined nitrogen in the percolation water. For the study region the...

Tipo: Conference Paper or Presentation

Palavras-chave: Climate change impact assessment; Water balance; Nitrogen load; Crop yield; Moraine landscape; Environmental Economics and Policy; Farm Management.

Ano: 2007

URL: http://purl.umn.edu/9256

Sewage sludge as nitrogen and phosphorus source for cane-plant and first ratoon crops

Rev. Bras. Ciênc. Solo

Franco,Ademir; Abreu Junior,Cassio Hamilton; Perecin,Dilermando; Oliveira,Fernando Carvalho; Granja,Ana Carolina Ribeiro; Braga,Vivian Santoro.

The use of sewage sludge in Brazilian agriculture was regulated by the resolution no. 375 Conama, in 2006. However, there is a lack of research to adequate the mineral N and P fertilizer doses to be applied in agricultural fields treated with this residue. In a field experiment, the effects of application rates of sewage sludge and mineral N and P fertilizers on the productivity and technical characteristics of the cane-plant and first ratoon (residual effect) crops were evaluated. Four doses of sewage sludge (0, 3.6, 7.2 and 10.8 t ha-1, dry base), of N (0, 30, 60 and 90 kg ha-1) and of P2O5 (0, 60, 120 and 180 kg ha-1) were combined in a factorial and laid out on randomized block design, a with two replications. To evaluate the residual effect of the...

Yield of maize crop irrigated with saline waters

Palavras-chave: Technical quality; Sugarcane; Crop yield; Urban wastes; Saccharum spp; Response surface.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000200029

AGRIAMBI

Rodrigues,Valdécio dos S.; Bezerra,Francisco M. L.; Sousa,Geocleber G. de; Fiusa,Jamili N.; Leite,Kelly N.; Viana,Thales V. de A..

ABSTRACT The growing competition for good-quality water is forcing the use of saline water for irrigation in several areas around the world. The objective of this study was to evaluate the influence of different electrical conductivities of irrigation water on the maize production aspects. The study was conducted in the field from August to December 2017 at the Experimental Farm of the Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Redenção, CE, Brazil. A randomized complete block design with five irrigation water salinity (1.0, 2.0, 3.0, 4.0 and 5.0 dS m-1) and four repetitions was used. The evaluated variables were: unhusked and husked ear weights, husked ear length and diameter, cob weight, 1000-grain weight and yield....

Adaptation Of Integrated Irrigation System To Mitigate Climate Change With Respect To Gender-Sensitive

Palavras-chave: Zea mays L.; Salt stress; Crop yield.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000200101

CIGR Journal

Dawit, Meseret; Dinka, Megersa Olumana.

Water shortages due to climate change are becoming a global concern. Hence, improved irrigation technology resulted in water saving and reduce workload of women by ensuring investment returns. This study aims at investigating the effects of the adoption of drip irrigation combined with hand-dug wells on crop water productivity and crop yield of smallholder farmers and their perception of the scheme over two cropping seasons at Haramaya districts, Ethiopia. It was observed that the integrated irrigation system is an efficient and cost-effective method to improve crop productivity. Consequently, the drip irrigation system with water supply from hand-dug wells is recommended as a flexible system that can accommodate a variety of farm sizes and particularly...

Water deficiency at different developmental stages of Glycine max can improve drought tolerance

Palavras-chave: Climate change mitigation and adaptation; Crop yield; Gender sensitive; Integrated drip irrigation; Water use; Water-efficiency.

Ano: 2021

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6509

Bragantia

Kron,Alan Panaia; Souza,Gustavo Maia; Ribeiro,Rafael Vasconcelos.

Developmental windows are specific periods of sensitivity during normal plant development in which a perturbation may be adaptively integrated. In these periods, sub-lethal environmental perturbations may improve the capacity to grow at lethal conditions. The aim of this study was to test the hypothesis that previous non-lethal water deficit applied in different developmental stages in soybean plants could enables them to improve the tolerance to environmental perturbations. In order to test this hypothesis we carried out an experiment with soybean plants submitted to water deficit in different stages of plant development, evaluating yield and physiological aspects. Our results indicated that water deficit experienced on V4 stage (vegetative) induces more...

Effects of surface application of dolomitic limestone and calcium-magnesium silicate on soybean and maize in rotation with green manure in a tropical region

Palavras-chave: Crop yield; Photosynthesis; Plant stress; Soybean.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000100005

Bragantia

Castro,Gustavo Spadotti Amaral; Crusciol,Carlos Alexandre Costa.

Although lime is currently the material most frequently used to ameliorate soil acidity in Brazil, silicate could efficiently replace this source because of its greater solubility and its greater silicon content, which are beneficial for plant development. This study aimed to evaluate the effects of superficial lime and silicate application on soil chemical attributes as well as on soybean and maize nutrition and grain yields when these crops are grown in rotation with green manure. The experimental design was a complete randomized block with sixteen replicates. Plots were treated with one of two materials for acidity correction (dolomitic lime and calcium/magnesium silicate) or with no soil correction, as a control. Silicate corrected soil acidity and...

Biofumigation Studies by Using Raphanus sativus and Eruca sativa as a Winter Cycle Crops to Control Root-knot Nematodes

Palavras-chave: Soil acidity correction; Crop yield; Silicon; Mineral nutrition; No tillage.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300311

BABT

Aydınlı,Gökhan; Mennan,Sevilhan.

ABSTRACT An experiment was conducted to search the efficacy of radish (Raphanus sativus) and arugula (Eruca sativa) for the control of Meloidogyne arenaria in the commercial tomato growing greenhouse. R. sativus and E. sativa were used as winter cycle crops and lettuce as a susceptible crop and 4 months after sowing, host level of the treatment plants was evaluated. All parts of R. sativus and E. sativa were incorporated except lettuce was covered with transparent polyethylene film for 4 weeks. R. sativus and E. sativa had not any root galls, and these plants caused reducing number of juveniles in the soil, in contrast to control and lettuce plots before growing tomato. Gall index and egg masses were significantly decreased on tomatoes in plots of applied...

Environmental physiology of the bananas (Musa spp.)

Palavras-chave: Meloidogyne arenaria; Raphanus sativus; Eruca sativa; Biofumigation; Crop yield.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100205

Braz. J. Plant Physiol.

Turner,David W.; Fortescue,Jeanie A.; Thomas,Dane S..

The bananas are thought to be particularly sensitive to changes in the environment. This review considers some historical and recent investigations into the response of the leaf, root and reproductive system to the environment. Monteith's analysis of the response of plants to intercepted radiation is appropriate for analyzing the productivity of bananas and plantains. The banana is sensitive to soil water deficits, and expanding tissues such as emerging leaves and growing fruit are among the first to be affected. As soil begins to dry, stomata close and leaves remain highly hydrated, probably through root pressure. Productivity is affected because of the early closure of stomata. We find the common belief that bananas use large amounts of water does not...