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Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil PAB
Marin,Fabio Ricardo; Carvalho,Gustavo Luís de.
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for sugarcane. Crop yield efficiency increased from 0.42 to 0.58 in the analyzed period (1990/1991 to 2005/2006 crop seasons), and yield gap consequently decreased from 58 to 42%. Climatic factors explained 43% of the variability of sugarcane yield...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Actual yield; Attainable yield; Biofuel; Socioeconomy; Yield gap.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000200001
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Yield Gap Analysis of Jowar in Maharashtra AgEcon
Gavali, A.V.; Deokate, T.B.; Choudhari, R.B.; Kamble, B.H..
Jowar is the main cereal crop in Maharashtra occupying 4.176 M ha area out of which rabi jowar occupied maximum area of 3.112 M ha during the year 2009-10. The gradual growth in use of technology in agriculture has resulted in increased crop productivity. The actual yields obtained are considerably lower than those recorded in the demonstration plots and research stations/farms. Therefore, there is a need to know the different yield gaps between the farmers’ fields and the demonstration plots. The study has suggested that to bridge this gap the use of recommended levels of input is most essential. The farmers should be motivated through visits to progressive farmers and organizations of field demonstrations, seminars and other communication means to use...
Tipo: Article Palavras-chave: Yield gap; Maharashtra; Jowar; Agricultural and Food Policy; Q12; Q16.
Ano: 2011 URL: http://purl.umn.edu/119412
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