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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
22/10/2012 |
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Data da última atualização: |
09/07/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
TEIXEIRA, A. H. de C.; HERNANDEZ, F. B. T. |
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Afiliação: |
ANTONIO HERIBERTO DE C TEIXEIRA, CPATSA. |
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Título: |
Delimitation of guava water productivity in the Brazilian Northeast. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Acta Horticulturae, Leuven, n. 959, p. 179-186, sept. 2012. |
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Idioma: |
Inglês |
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Notas: |
Edição do Proceedings of the III International Symposium on Guava and other Myrtaceae, Petrolina, sept. 2012. |
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Conteúdo: |
The intensification of agricultural crops in the Brazilian northeast results in a change of natural vegetation, making the quantification and evaluation of the additional water use important. Applications of a Geographic Information System (GIS) are presented in this paper to estimate the guava water productivity (GWP) on a large scale. Long-term weather data were used together with regression models involving crop coefficient (Kc), reference evapotranspiration (ET0) and accumulated degree days (DDac) to quantify the guava water requirements (GWR) in the Brazilian Northeast producer states, considering an average growing season of six months and the cultivar ‘Paluma’ as a reference. By coupling GWR data with total precipitation for a growing season, it was possible to quantify the guava water deficit (GWD) giving an estimate about irrigation needs. Considering the whole region, the variation of the averaged GWD values ranged from 50 mm for pruning dates in January to 520 mm, with pruning done in May. Associating the average GWR values with yield data for 2010 from the Brazilian Geographical and Statistical Institute (IBGE), the average biophysical and economic values of GWP were estimated for each guava producer state. The biophysical values were between 0.86 and 4.95 kg m-3 for pruning dates in July and January in Rio Grande do Norte and Pernambuco states, respectively, while the economic ones ranged from 0.40 to 3.18 R$ m-3 for the same pruning periods, however, with the lowest averaged value being for Paraíba state. The states of Pernambuco, Bahia and Piauí presented the largest biophysical and economic GWP values. The spatially presented analyses can subsidize programs for the expansion of rainfed guava crop as well as water allocation criteria under irrigation conditions, aiming at improvements for water resource use. MenosThe intensification of agricultural crops in the Brazilian northeast results in a change of natural vegetation, making the quantification and evaluation of the additional water use important. Applications of a Geographic Information System (GIS) are presented in this paper to estimate the guava water productivity (GWP) on a large scale. Long-term weather data were used together with regression models involving crop coefficient (Kc), reference evapotranspiration (ET0) and accumulated degree days (DDac) to quantify the guava water requirements (GWR) in the Brazilian Northeast producer states, considering an average growing season of six months and the cultivar ‘Paluma’ as a reference. By coupling GWR data with total precipitation for a growing season, it was possible to quantify the guava water deficit (GWD) giving an estimate about irrigation needs. Considering the whole region, the variation of the averaged GWD values ranged from 50 mm for pruning dates in January to 520 mm, with pruning done in May. Associating the average GWR values with yield data for 2010 from the Brazilian Geographical and Statistical Institute (IBGE), the average biophysical and economic values of GWP were estimated for each guava producer state. The biophysical values were between 0.86 and 4.95 kg m-3 for pruning dates in July and January in Rio Grande do Norte and Pernambuco states, respectively, while the economic ones ranged from 0.40 to 3.18 R$ m-3 for the same pruning periods, however, with the l... Mostrar Tudo |
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Palavras-Chave: |
Graus-dias; Guava; Modelagem. |
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Thesagro: |
Água; Evapotranspiração; Goiaba; Recurso Hídrico. |
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Thesaurus Nal: |
Guavas; Psidium. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/68478/1/Heriberto-2012.pdf
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Marc: |
LEADER 02604nam a2200241 a 4500
001 1937467
005 2018-07-09
008 2012 bl uuuu u00u1 u #d
100 1 $aTEIXEIRA, A. H. de C.
245 $aDelimitation of guava water productivity in the Brazilian Northeast.
260 $aActa Horticulturae, Leuven, n. 959, p. 179-186, sept. 2012.$c2012
500 $aEdição do Proceedings of the III International Symposium on Guava and other Myrtaceae, Petrolina, sept. 2012.
520 $aThe intensification of agricultural crops in the Brazilian northeast results in a change of natural vegetation, making the quantification and evaluation of the additional water use important. Applications of a Geographic Information System (GIS) are presented in this paper to estimate the guava water productivity (GWP) on a large scale. Long-term weather data were used together with regression models involving crop coefficient (Kc), reference evapotranspiration (ET0) and accumulated degree days (DDac) to quantify the guava water requirements (GWR) in the Brazilian Northeast producer states, considering an average growing season of six months and the cultivar ‘Paluma’ as a reference. By coupling GWR data with total precipitation for a growing season, it was possible to quantify the guava water deficit (GWD) giving an estimate about irrigation needs. Considering the whole region, the variation of the averaged GWD values ranged from 50 mm for pruning dates in January to 520 mm, with pruning done in May. Associating the average GWR values with yield data for 2010 from the Brazilian Geographical and Statistical Institute (IBGE), the average biophysical and economic values of GWP were estimated for each guava producer state. The biophysical values were between 0.86 and 4.95 kg m-3 for pruning dates in July and January in Rio Grande do Norte and Pernambuco states, respectively, while the economic ones ranged from 0.40 to 3.18 R$ m-3 for the same pruning periods, however, with the lowest averaged value being for Paraíba state. The states of Pernambuco, Bahia and Piauí presented the largest biophysical and economic GWP values. The spatially presented analyses can subsidize programs for the expansion of rainfed guava crop as well as water allocation criteria under irrigation conditions, aiming at improvements for water resource use.
650 $aGuavas
650 $aPsidium
650 $aÁgua
650 $aEvapotranspiração
650 $aGoiaba
650 $aRecurso Hídrico
653 $aGraus-dias
653 $aGuava
653 $aModelagem
700 1 $aHERNANDEZ, F. B. T.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
05/09/2019 |
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Data da última atualização: |
16/09/2019 |
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Tipo da produção científica: |
Circular Técnica |
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Autoria: |
FAVERO, A. P. |
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Afiliação: |
ALESSANDRA PEREIRA FAVERO, CPPSE. |
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Título: |
Avaliação da citologia, genética e biologia reprodutiva de espécies de Paspalum para o estabelecimento de um programa de hibridações. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
São Carlos, SP: Embrapa Pecuária Sudeste, 2019. |
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Páginas: |
22 p. |
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Série: |
(Embrapa Pecuária Sudeste. Circular Técnica, 85). |
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ISSN: |
1981-2086 |
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Idioma: |
Português |
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Conteúdo: |
A pecuária brasileira ocupa aproximadamente 180 milhões de hectares do território nacional, sendo que 80% são ocupados com espécies forrageiras exóticas, principalmente do gênero Brachiaria. Tal realidade torna a pecuária altamente vulnerável a danos por praga e/ou doença, com consequências potencialmente desastrosas. Além disso, a grande maioria das cultivares são apomíticas e, geralmente, cada uma representa um só genótipo, em razão de seu sistema reprodutivo. Isso pode ser exemplificado com a infestação de cigarrinha-das-pastagens em Brachiaria decumbens na região CentroOeste (COSENZA, 1982) e a ?Síndrome da Morte Súbita? em pastagens de Brachiaria brizantha na Região Norte (BARBOSA, 2006). |
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Palavras-Chave: |
Poliploidização de cromossomos; Tetraplóides sexuais sintéticos. |
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Thesagro: |
Paspalum Dilatatum; Paspalum Guenoarum; Paspalum Notatum; Paspalum Plicatulum. |
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Thesaurus NAL: |
Paspalum; Poaceae. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201649/1/Avaliacao-Citologia-Genetica.pdf
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Marc: |
LEADER 01541nam a2200241 a 4500
001 2111964
005 2019-09-16
008 2019 bl uuuu u0uu1 u #d
022 $a1981-2086
100 1 $aFAVERO, A. P.
245 $aAvaliação da citologia, genética e biologia reprodutiva de espécies de Paspalum para o estabelecimento de um programa de hibridações.$h[electronic resource]
260 $aSão Carlos, SP: Embrapa Pecuária Sudeste$c2019
300 $a22 p.
490 $a(Embrapa Pecuária Sudeste. Circular Técnica, 85).
520 $aA pecuária brasileira ocupa aproximadamente 180 milhões de hectares do território nacional, sendo que 80% são ocupados com espécies forrageiras exóticas, principalmente do gênero Brachiaria. Tal realidade torna a pecuária altamente vulnerável a danos por praga e/ou doença, com consequências potencialmente desastrosas. Além disso, a grande maioria das cultivares são apomíticas e, geralmente, cada uma representa um só genótipo, em razão de seu sistema reprodutivo. Isso pode ser exemplificado com a infestação de cigarrinha-das-pastagens em Brachiaria decumbens na região CentroOeste (COSENZA, 1982) e a ?Síndrome da Morte Súbita? em pastagens de Brachiaria brizantha na Região Norte (BARBOSA, 2006).
650 $aPaspalum
650 $aPoaceae
650 $aPaspalum Dilatatum
650 $aPaspalum Guenoarum
650 $aPaspalum Notatum
650 $aPaspalum Plicatulum
653 $aPoliploidização de cromossomos
653 $aTetraplóides sexuais sintéticos
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Embrapa Pecuária Sudeste (CPPSE) |
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