|
|
|
| Registros recuperados: 26 | |
|
|
| Doole, Graeme J.; Hertzler, Greg. |
| The capacity of global agricultural production to meet increased demand for food from population growth and wealth accumulation is threatened by extensive land degradation. Nonetheless, previous research has focused primarily on the dynamic implications of input management and ignored land-use choice. This paper extends this theory through an examination of the intertemporal management of agricultural land through the use of non-crop inputs, such as fertilizer, and land uses that either degrade or restore productivity. The need to consider the relative total asset value of alternative crops over time is demonstrated. Moreover, higher output prices for degrading crops are shown to increase their relative value, motivating the later adoption of substitutes.... |
| Tipo: Journal Article |
Palavras-chave: Crop sequences; Land degradation; Regime switching; International Development; Production Economics; Q15; Q24. |
| Ano: 2011 |
URL: http://purl.umn.edu/100643 |
| |
|
| |
|
|
| Beniaich,Adnane; Silva,Marx Leandro Naves; Guimarães,Danielle Vieira; Bispo,Diêgo Faustolo Alves; Avanzi,Junior Cesar; Curi,Nilton; Pio,Rafael; Dondeyne,Stefaan. |
| ABSTRACT In the tropics, water erosion is one of the most important factors leading to the degradation and deterioration of agricultural land. Olive orchards have a low canopy coverage, especially during the first years after planting, due to the low density of olive trees. Given the fast expansion of olive orchards in Brazil, this study aimed to evaluate the effect of cover vegetation on soil and water losses under natural rainfall. In addition, it was assessed the crop performance and the vegetation cover index in different management systems in olive orchards. The study was carried out in soil erosion plots, where water and sediment were sampled and measured over two crops season, under the following treatments: in the first season, bare soil with olive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil conservation; Soil loss; Land degradation; Runoff; Olive cultivation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832020000100503 |
| |
|
| |
|
|
| Telles,Tiago Santos; Dechen,Sonia Carmela Falci; Guimarães,Maria de Fátima. |
| The problem of soil erosion in Brazil has been a focus of agricultural scientific research since the 19th century. The aim of this study was to provide a historical overview of the institutional landmarks which gave rise to the first studies in soil erosion and established the foundations of agricultural research in Brazil. The 19th century and beginning of the 20th century saw the founding of a series of institutions in Brazil, such as Botanical Gardens, executive institutions, research institutes, experimental stations, educational institutions of agricultural sciences, as well as the creation and diversification of scientific journals. These entities, each in its own way, served to foster soil erosion research in Brazil. During the Imperial period... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Historiography; Soil conservation; Land degradation; Soil science. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600001 |
| |
|
| |
| Registros recuperados: 26 | |
|
|
|
