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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
09/08/1993 |
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Data da última atualização: |
06/10/2004 |
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Autoria: |
SHANMUGASUNDARAM, S. |
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Afiliação: |
AVRDC, P.O.Box 42, Shanhua, Tainan 741, Taiwan. |
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Título: |
Limited popularity of soybean cultivation in South and Southeast Asia. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
In: SYMPOSIUM ON TROPICAL AGRICULTURE RESEARCH, 1983, Tsukuba. International symposium on soybean in the tropics and subtropics: proceedings. Yatabe : TARC, 1984. p.115-125. (Tropical Agriculture Research Series, 17). |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean is an important food, feed, oil, and industrial crop in South and Southeast Asia. In 1981 Asian countries in the region (including Japan and Korea) imported more than 6,6 million tons of soybean. Although soybean consumption is growing, the area planted and yield per hectare have not increased significantly. The reasons for this situation vary. In Indonesia and Thailand, the price of soybean is attractive, but average yields are low. In Taiwan and the Philippines, price supports ae insufficient to provide a good return compared with other crops. Poor yields are generally due to the use of non adapted cultivars, the lack of quality seeds, inadequate extension services, the absence of appropriate and economical management technology, risks due to pestsand diseases, and the high cost of production. The low cost of imported soybean is also a factor. Althrough there are manu limitations for expanding soybean cultivation in the region, work has already begun at IITA, INTSOY, and AVRDC, and strong cooperative programs are being established at the international level. Through interdisciplinary and international efforts that link research with extension, the countries in South and Southeast Asia can resolve their soybean production problems. |
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Palavras-Chave: |
Aspecto economico; Disease; Economic aspect; Insect; Soybean; Yield. |
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Thesagro: |
Doença; Inseto; Pesquisa; Rendimento; Soja. |
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Thesaurus Nal: |
Asia; research. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02103naa a2200277 a 4500
001 1454712
005 2004-10-06
008 1984 bl uuuu u00u1 u #d
100 1 $aSHANMUGASUNDARAM, S.
245 $aLimited popularity of soybean cultivation in South and Southeast Asia.
260 $c1984
520 $aSoybean is an important food, feed, oil, and industrial crop in South and Southeast Asia. In 1981 Asian countries in the region (including Japan and Korea) imported more than 6,6 million tons of soybean. Although soybean consumption is growing, the area planted and yield per hectare have not increased significantly. The reasons for this situation vary. In Indonesia and Thailand, the price of soybean is attractive, but average yields are low. In Taiwan and the Philippines, price supports ae insufficient to provide a good return compared with other crops. Poor yields are generally due to the use of non adapted cultivars, the lack of quality seeds, inadequate extension services, the absence of appropriate and economical management technology, risks due to pestsand diseases, and the high cost of production. The low cost of imported soybean is also a factor. Althrough there are manu limitations for expanding soybean cultivation in the region, work has already begun at IITA, INTSOY, and AVRDC, and strong cooperative programs are being established at the international level. Through interdisciplinary and international efforts that link research with extension, the countries in South and Southeast Asia can resolve their soybean production problems.
650 $aAsia
650 $aresearch
650 $aDoença
650 $aInseto
650 $aPesquisa
650 $aRendimento
650 $aSoja
653 $aAspecto economico
653 $aDisease
653 $aEconomic aspect
653 $aInsect
653 $aSoybean
653 $aYield
773 $tIn: SYMPOSIUM ON TROPICAL AGRICULTURE RESEARCH, 1983, Tsukuba. International symposium on soybean in the tropics and subtropics: proceedings. Yatabe : TARC, 1984. p.115-125. (Tropical Agriculture Research Series, 17).
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
15/01/2024 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
STEINFELD, J. P.; BIANCHI, F. J. J. A.; LOCATELLI, J. L.; RIZZO, R.; RESENDE, M. E. B. DE; BALLESTER, M. V. R.; CERRI, C. E. P.; BERNARDI, A. C. de C.; CREAMER, R. E. |
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Afiliação: |
JONAS P. STEINFELD, Wageningen University & Research; FELIX J. J. A. BIANCHI, Wageningen University & Research; JORGE LUIZ LOCATELLI, University of São Paulo; RODNEI RIZZO, University of São Paulo; MARIA EDUARDA BISPO DE RESENDE, University of São Paulo; MARIA V. RAMOS BALLESTER, University of São Paulo; CARLOS E .P. CERRI, University of São Paulo; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; RACHEL E. CREAMER, Wageningen University & Research. |
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Título: |
Increasing complexity of agroforestry systems benefits nutrient cycling and mineral-associated organic carbon storage, in south-eastern Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Geoderma, v. 440, dec. 2023, 116726. |
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Páginas: |
12 p. |
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DOI: |
10.1016/j.geoderma.2023.116726 |
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Idioma: |
Inglês |
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Conteúdo: |
Agroforestry systems are often promoted as solutions to address land degradation and climate change. However, agroforestry is an umbrella term for a large variety of systems and it is not clear how their degree of complexity influences their provision of soil-based ecosystem services, such as soil organic carbon (SOC) storage and nutrient cycling. Furthermore, a knowledge gap remains whether agroforestry systems perform equally well on all soil types. The objectives of this study were 1) to assess the links between agroforestry complexity, nutrient cycling and SOC fractions, and 2) to assess how soil texture influences these relationships in Brazilian agroforestry systems. We sampled 59 agroforestry plots across 30 sites in Sao Paulo state, Brazil, and 8 monocrop sites (6 pastures and 2 crop monocultures). The 38 sites represented a soil textural gradient, ranging from very sandy to very clayey (clay content range 25 – 620 g kg−1). An Agroforestry Complexity Index (ACI) was defined based on tree species richness, stem density and pruning management. Nutrient (N, P, K, Ca, Mg) and C contents were determined in litter and soil (0–30 cm depth) samples, and mineral-associated organic C (MAOC) and particulate organic C (POC) in soil samples were assessed as well. ACI was positively associated with C, N, P, Ca and Mg stocks in litter, and these litter nutrients were in turn positively associated with the corresponding soil nutrient stocks. Associations between soil nutrients and MAOC were stronger on sandy soils than on clayey soils, particularly for P, Ca and Cation Exchange Capacity (CEC). For POC, robust relationships with nutrients were only found on sandy soils. Structural Equation Models indicated causal relationships between agroforestry complexity, P and Ca cycling, and MAOC and POC stocks in topsoils. Our results indicate that nutrients effectively cycle from in situ mulch into plant-available soil pools and highlight the synergies between nutrient cycling and stable C stocks that can be achieved in complex agroforestry systems. These synergies seem to be particularly strong on sandy soils (<15 % clay). MenosAgroforestry systems are often promoted as solutions to address land degradation and climate change. However, agroforestry is an umbrella term for a large variety of systems and it is not clear how their degree of complexity influences their provision of soil-based ecosystem services, such as soil organic carbon (SOC) storage and nutrient cycling. Furthermore, a knowledge gap remains whether agroforestry systems perform equally well on all soil types. The objectives of this study were 1) to assess the links between agroforestry complexity, nutrient cycling and SOC fractions, and 2) to assess how soil texture influences these relationships in Brazilian agroforestry systems. We sampled 59 agroforestry plots across 30 sites in Sao Paulo state, Brazil, and 8 monocrop sites (6 pastures and 2 crop monocultures). The 38 sites represented a soil textural gradient, ranging from very sandy to very clayey (clay content range 25 – 620 g kg−1). An Agroforestry Complexity Index (ACI) was defined based on tree species richness, stem density and pruning management. Nutrient (N, P, K, Ca, Mg) and C contents were determined in litter and soil (0–30 cm depth) samples, and mineral-associated organic C (MAOC) and particulate organic C (POC) in soil samples were assessed as well. ACI was positively associated with C, N, P, Ca and Mg stocks in litter, and these litter nutrients were in turn positively associated with the corresponding soil nutrient stocks. Associations between soil nutrients and M... Mostrar Tudo |
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Palavras-Chave: |
Agroforestry management; Diversity; Multistrata; Silvopastures; Successional agroforestry. |
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Thesaurus NAL: |
Soil fertility. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1160816/1/IncreasingComplexityAgroforestry.pdf
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Marc: |
LEADER 03121naa a2200313 a 4500
001 2160816
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1016/j.geoderma.2023.116726$2DOI
100 1 $aSTEINFELD, J. P.
245 $aIncreasing complexity of agroforestry systems benefits nutrient cycling and mineral-associated organic carbon storage, in south-eastern Brazil.$h[electronic resource]
260 $c2023
300 $a12 p.
520 $aAgroforestry systems are often promoted as solutions to address land degradation and climate change. However, agroforestry is an umbrella term for a large variety of systems and it is not clear how their degree of complexity influences their provision of soil-based ecosystem services, such as soil organic carbon (SOC) storage and nutrient cycling. Furthermore, a knowledge gap remains whether agroforestry systems perform equally well on all soil types. The objectives of this study were 1) to assess the links between agroforestry complexity, nutrient cycling and SOC fractions, and 2) to assess how soil texture influences these relationships in Brazilian agroforestry systems. We sampled 59 agroforestry plots across 30 sites in Sao Paulo state, Brazil, and 8 monocrop sites (6 pastures and 2 crop monocultures). The 38 sites represented a soil textural gradient, ranging from very sandy to very clayey (clay content range 25 – 620 g kg−1). An Agroforestry Complexity Index (ACI) was defined based on tree species richness, stem density and pruning management. Nutrient (N, P, K, Ca, Mg) and C contents were determined in litter and soil (0–30 cm depth) samples, and mineral-associated organic C (MAOC) and particulate organic C (POC) in soil samples were assessed as well. ACI was positively associated with C, N, P, Ca and Mg stocks in litter, and these litter nutrients were in turn positively associated with the corresponding soil nutrient stocks. Associations between soil nutrients and MAOC were stronger on sandy soils than on clayey soils, particularly for P, Ca and Cation Exchange Capacity (CEC). For POC, robust relationships with nutrients were only found on sandy soils. Structural Equation Models indicated causal relationships between agroforestry complexity, P and Ca cycling, and MAOC and POC stocks in topsoils. Our results indicate that nutrients effectively cycle from in situ mulch into plant-available soil pools and highlight the synergies between nutrient cycling and stable C stocks that can be achieved in complex agroforestry systems. These synergies seem to be particularly strong on sandy soils (<15 % clay).
650 $aSoil fertility
653 $aAgroforestry management
653 $aDiversity
653 $aMultistrata
653 $aSilvopastures
653 $aSuccessional agroforestry
700 1 $aBIANCHI, F. J. J. A.
700 1 $aLOCATELLI, J. L.
700 1 $aRIZZO, R.
700 1 $aRESENDE, M. E. B. DE
700 1 $aBALLESTER, M. V. R.
700 1 $aCERRI, C. E. P.
700 1 $aBERNARDI, A. C. de C.
700 1 $aCREAMER, R. E.
773 $tGeoderma$gv. 440, dec. 2023, 116726.
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Embrapa Pecuária Sudeste (CPPSE) |
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