Detalhes bibliográficos
| Ano de defesa: |
2013 |
| Autor(a) principal: |
CARVALHO, José Francisco de
 |
| Orientador(a): |
SILVA, Ênio Farias de França e |
| Banca de defesa: |
BASTOS, Edson Alves,
TABOSA, José Nildo,
PEDROSA, Elvira Maria Régis,
MEDEIROS, Pedro Róbinson Fernandes de |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Agrícola
|
| Departamento: |
Departamento de Engenharia Agrícola
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5613
|
Resumo: |
The process of soil salinization occurs by several factors such as the litolic origin of their training and application of irrigation handled improperly and the use of lower quality water. In the present study it was assessed the effects of irrigation with saline water and fractions of leaching on the dynamics of distribution, uptake by plants and leaving salts of the soil profile as well as interference in crop productivity in cowpea and maize. The study was conducted at the Experimental Station of Irrigated Agriculture Dr. Ronaldo Freire de Moura, in the Department of Rural Technology, Federal Rural University of Pernambuco - UFRPE. The experimental design was completely randomized in a 2x5 factorial arrangement with four replications, applying two levels of salinity and five fractions leaching. It was analyzed: the balance of salts based on the input of fertilizers, irrigation and salts by leaching out and absorbed by crops. Regarding crop it was rated the number of pods per plant, fresh weight of pods, dry pods, weight of 100 grains, length of pods, yield of grain, number of plants per plot, fresh biomass of plants per hectare, fresh shoot biomass plant, dry shoot biomass plant in cowpea crops; number of ears per plot, diameter of ears without straw, straw diameter with ears, fresh straw ear, fresh weight cobs, grain yield hydrated, dehydrated grain yield in maize cultivation; water use efficiency, harvest index for both cowpea and maize. The fractions of leaching 10%, 15% and 20% removed salts from the soil. These was increment on crop variable, when applying 10% leaching fraction, however, the addition of 20% leaching reduced productivity of crops. |
