| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Arroz e Feijão. |
|
Data corrente: |
15/03/1996 |
|
Data da última atualização: |
22/04/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
GUIMARÃES, C. M.; KLUTHCOUSKI, J.; CARVALHO, J. R. P. de. |
|
Afiliação: |
CLEBER MORAIS GUIMARAES, CNPAF; JOAO KLUTHCOUSKI, CNPAF; JOSE RUY PORTO DE CARVALHO, CNPAF. |
|
Título: |
Effects of phosphorus fertilizer on root and shoot growth in common beans. |
|
Ano de publicação: |
1982 |
|
Fonte/Imprenta: |
Annual Report of the Bean Improvement Cooperative, Geneva, v. 25, p. 91, 1982. |
|
Idioma: |
Inglês |
|
Conteúdo: |
A field experiment of common bean was grown on a red latosol low in phosphorus, near Goiânia, Goiás, Brazil. It was conducted during the raining season (November to February, 1981), and no water deficit occured. |
|
Palavras-Chave: |
Adubação fosfatada; Common bean. |
|
Thesagro: |
Adubação; Feijão; Fósforo; Phaseolus Vulgaris; Rocha Fosfatada. |
|
Thesaurus Nal: |
Beans; Phosphorus fertilizers. |
|
Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/196067/1/CNPAF-1982-bic.pdf
|
|
Marc: |
LEADER 00955naa a2200253 a 4500
001 2108389
005 2019-04-22
008 1982 bl uuuu u00u1 u #d
100 1 $aGUIMARÃES, C. M.
245 $aEffects of phosphorus fertilizer on root and shoot growth in common beans.$h[electronic resource]
260 $c1982
520 $aA field experiment of common bean was grown on a red latosol low in phosphorus, near Goiânia, Goiás, Brazil. It was conducted during the raining season (November to February, 1981), and no water deficit occured.
650 $aBeans
650 $aPhosphorus fertilizers
650 $aAdubação
650 $aFeijão
650 $aFósforo
650 $aPhaseolus Vulgaris
650 $aRocha Fosfatada
653 $aAdubação fosfatada
653 $aCommon bean
700 1 $aKLUTHCOUSKI, J.
700 1 $aCARVALHO, J. R. P. de
773 $tAnnual Report of the Bean Improvement Cooperative, Geneva$gv. 25, p. 91, 1982.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Rondônia. |
|
Data corrente: |
26/02/2018 |
|
Data da última atualização: |
07/03/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
WADT, L. H. de O.; FAUSTINO, C. L.; STAUDHAMMER, C. L.; KAINER, K. A.; EVANGELISTA, J. S. |
|
Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia; Camila Lima Faustino, UFAC; Christina Lynn Staudhammer, University of Alabama; Karen A. Kainer, University of Florida; Joziane Silva Evangelista, Bolsista, Gordon and Betty Moore Foundation. |
|
Título: |
Primary and secondary dispersal of Bertholletia excelsa: Implications for sustainable harvests. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Forest Ecology and Management, v. 415?416, p. 98-105, maio, 2018. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Our study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred within 5 days of fruitfall. More fruits were opened or removed when subcanopy vegetation had higher bamboo density or lower densities of saplings and trees ? favorable microenvironments where rodents can gnaw fruits while remaining relatively hidden. Humans directly compete with native dispersers/predators for B. excelsa?s seeds traded internationally as Brazil nut, and thus timing and intensity of harvests following fruitfall determines availability of this resource for dispersers. By mid-January when human harvesting typically begins in our study site, 94% of fruits had fallen from the tall trees, and our continuous quantification of disperser activity revealed that 197 fruits (2.9%) or 3341 seeds (assuming an average 17 seeds per fruit) were consumed or dispersed. Thus, human harvesters could safely collect and dispersers had weeks of unlimited resource access. Considering our dispersal findings, cumulative research results and collective understanding of the Bertholletia-Dasyprocta-Homo sapiens interactions, harvests in our study site and region boost incomes and likely do not threaten Brazil nut recruitment or maintenance of agouti populations. MenosOur study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred withi... Mostrar Tudo |
|
Palavras-Chave: |
Brazil nut; Castanha do brasil; Frugivory; Mamíferos dispersores; Mammalian dispersers; Predador de sementes; Scatterhoard; Seed predator. |
|
Thesagro: |
Castanha do Para. |
|
Thesaurus NAL: |
Dasyprocta. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 03524naa a2200289 a 4500
001 2088183
005 2022-03-07
008 2018 bl uuuu u00u1 u #d
100 1 $aWADT, L. H. de O.
245 $aPrimary and secondary dispersal of Bertholletia excelsa$bImplications for sustainable harvests.$h[electronic resource]
260 $c2018
520 $aOur study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred within 5 days of fruitfall. More fruits were opened or removed when subcanopy vegetation had higher bamboo density or lower densities of saplings and trees ? favorable microenvironments where rodents can gnaw fruits while remaining relatively hidden. Humans directly compete with native dispersers/predators for B. excelsa?s seeds traded internationally as Brazil nut, and thus timing and intensity of harvests following fruitfall determines availability of this resource for dispersers. By mid-January when human harvesting typically begins in our study site, 94% of fruits had fallen from the tall trees, and our continuous quantification of disperser activity revealed that 197 fruits (2.9%) or 3341 seeds (assuming an average 17 seeds per fruit) were consumed or dispersed. Thus, human harvesters could safely collect and dispersers had weeks of unlimited resource access. Considering our dispersal findings, cumulative research results and collective understanding of the Bertholletia-Dasyprocta-Homo sapiens interactions, harvests in our study site and region boost incomes and likely do not threaten Brazil nut recruitment or maintenance of agouti populations.
650 $aDasyprocta
650 $aCastanha do Para
653 $aBrazil nut
653 $aCastanha do brasil
653 $aFrugivory
653 $aMamíferos dispersores
653 $aMammalian dispersers
653 $aPredador de sementes
653 $aScatterhoard
653 $aSeed predator
700 1 $aFAUSTINO, C. L.
700 1 $aSTAUDHAMMER, C. L.
700 1 $aKAINER, K. A.
700 1 $aEVANGELISTA, J. S.
773 $tForest Ecology and Management$gv. 415?416, p. 98-105, maio, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Rondônia (CPAF-RO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
