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Previous issue date: 2014-12-19 / O sabi? (Mimosa caesalpiniaefolia Benth.) ? uma esp?cie end?mica do bioma Caatinga,
sendo considerada tolerante aos estresses salino e h?drico. O processo de saliniza??o dos
solos e das ?guas subterr?neas e superficiais ? um dos mais importantes problemas de
degrada??o ambiental, com seus efeitos prejudiciais sendo mais pronunciados nas ?reas de
regi?es ?ridas e semi?ridas, e que vem crescendo rapidamente em diversas partes do
globo, causando problemas de grandes propor??es na produtividade das culturas agr?colas.
Condicionadores org?nicos como esterco de curral e casca de arroz podem contribuir para
redu??o da PST, possivelmente em virtude da libera??o de CO2 e produ??o de ?cidos
org?nicos, durante a decomposi??o da mat?ria org?nica, al?m de atuarem como fontes de
c?lcio e magn?sio e inibirem a disponibilidade do s?dio. A associa??o ?ntima e ben?fica das
micorrizas com as plantas resulta no aumento da absor??o de ?gua e nutrientes pelos
vegetais, principalmente o f?sforo, devido sua baixa mobilidade no solo. O objetivo deste
trabalho foi a avalia??o do crescimento inicial de mudas de sabi? sob inocula??o com
fungos micorr?zicos arbusculares, adubadas com esterco de curral e irrigadas com ?gua de
diferentes n?veis de salinidade. O experimento foi instalado em condi??es de casa de
vegeta??o nas depend?ncias da Escola Agr?cola de Jundia? - UFRN, Campus Maca?ba. O
delineamento estat?stico adotado foi o inteiramente casualizado composto de doze
tratamentos ? tr?s substratos (solo est?ril, esterco e FMA), quatro n?veis de salinidade (0,2;
1,5; 3,0 e 4,5 dS m-1
) e cinco repeti??es, totalizando sessenta unidades experimentais. Os
resultados indicam que a inocula??o de fungos micorr?zicos possui contribui??es para o
crescimento das plantas, sobretudo em ra?zes e parte a?rea, o que sugere que sua
aplica??o seja ben?fica no estabelecimento de plantas de sabi? em condi??es naturais, com
solo pobre em P. Os n?veis de salinidade n?o causaram efeitos com relev?ncia estat?stica no
desenvolvimento das plantas, indicando a resist?ncia do sabi? ? mesma. / The sabi? (Mimosa caesalpiniaefolia Benth.) is an endemic species of the Caatinga
biome, considered tolerant to salt and water stress. The process of salinization of soil and
groundwater and surface water is one of the most important problems of environmental
degradation, with its harmful effects being more pronounced in the areas of arid and semiarid
regions, and rapidly growing in many parts of the globe, causing problems of the major crop
yield. Organic conditioners as barnyard manure, and rice hulls can contribute to reducing the
PST, possibly due to the release of CO2 and the production of organic acids during the
decomposition of organic matter, and act as sources of calcium and magnesium and inhibit
the availability sodium. The intimate association of mycorrhizae and beneficial to plants
results in increased uptake of water and nutrients by plants, especially phosphorus, due to
their low mobility in soil. The objective of this study was to evaluate the initial growth of
thrush seedlings under inoculation with mycorrhizal fungi and fertilized with manure corral
and irrigated with water of different salinity levels. The experiment was conducted in
greenhouse conditions of vegetation on the premises of the Agricultural School of Jundia? -
UFRN, Campus Maca?ba. The adopted statistical design was randomized composed of
twelve treatments - three substrates (sterile soil, manure and FMA), four salinity levels (0.2,
1.5, 3.0 and 4.5 dS m-1
) and five repetitions, totaling sixty experimental units. The results
indicate that inoculation with mycorrhizal fungi own contributions to the growth of plants,
especially in roots and shoots, which suggests that its application is beneficial in establishing
thrush plants in natural conditions, with poor soil in P. Levels salinity caused no effects with
statistical significance in plant development, indicating Sabia resistance to it.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19995 |
| Date | 19 December 2014 |
| Creators | Menezes, Virginia Cl?udia de Lima |
| Contributors | 02106448422, http://lattes.cnpq.br/6609231229691480, Vieira, F?bio de Almeida, 01196769664, http://lattes.cnpq.br/1649941101614454, Sousa, Antonio Evami Cavalcante, 80783430353, http://lattes.cnpq.br/9166267787315422, Praxedes, Sidney Carlos |
| Publisher | Universidade Federal do Rio Grande do Norte, MESTRADO EM CI?NCIAS FLORESTAIS, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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