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Previous issue date: 2015-03-09 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A palma ? uma importante forrageira para a pecu?ria no semi?rido do Brasil, pela adapta??o ?s condi??es clim?ticas dessa regi?o, produtividade e valor nutricional. A produ??o dessa cact?cea tem respondido positivamente a t?cnicas como adensamento, aduba??o e manejos de corte, todavia, no Rio Grande do Norte, apenas certas ?reas possuem clima favor?vel ao desenvolvimento dessa cultura e a irriga??o, com pouca quantidade de ?gua, tem se revelado uma alternativa para a viabiliza??o do cultivo desse vegetal. Diante disso, objetivou-se avaliar os efeitos de diferentes l?minas de ?gua salina e doses de aduba??o org?nica com esterco bovino, sobre as caracter?sticas morfol?gicas e produ??o de mat?ria verde e seca da palma Mi?da (Nopalea cochenillifera Salm Dick) em plantio adensado. O experimento foi realizado na Esta??o Experimental de Terras Secas (EMPARN), Pedro Avelino, latitude 5?31?21? Sul e longitude 36?23?14? Oeste. O solo foi classificado como Cambissolo H?plico Carbon?tico T?pico e a ?gua utilizada na irriga??o, C4S1T3 (5,25 dS.m-1), com plantio em espa?amento de 2,0 x 0,25 m (20.000 plantas ha-1). Foi utilizado o delineamento inteiramente casualizado em parcelas subdivididas, onde as l?minas de ?gua salina (0; 7,5, 15,0 e 30,0 mm m?s-1) com intervalo de 10 dias, constitu?ram as parcelas principais e as aduba??es org?nicas (0, 25 e 50 Mg ha-1 ano-1) as subparcelas, com quatro repeti??es. As caracter?sticas morfol?gicas mensuradas foram n?mero de clad?dios, altura e volume da planta; comprimento, largura, per?metro, espessura, ?rea e ?ndice de ?rea de clad?dios, produ??es de mat?ria verde e seca, teor de mat?ria seca, efici?ncia do uso da ?gua e danos causados pela cochonilha de escama e podrid?o mole. N?o houve influ?ncia da aduba??o org?nica com esterco bovino sobre a maioria das vari?veis estudadas, particularmente em rela??o ?s produ??es de mat?ria verde e seca. As l?minas de irriga??o tiveram influ?ncia significativa sobre a maioria das vari?veis, promovendo altura e volume de plantas superiores, clad?dios maiores e mais espessos e eleva??es das produ??es de mat?ria verde e seca. A aus?ncia da irriga??o promoveu significativa expans?o da praga da cochonilha de escama e quando irrigada com diferentes l?minas incrementou os danos e perdas de estande, ocasionados pela podrid?o mole, com mais intensidade na maior l?mina. / Cactus pear is an important forage for livestock in semi-arid region of Brazil, due to its adaptation to climate conditions in this region, high productivity and nutritional value. The yield of this cactus has positively responded to techniques such as planting density, fertilization and cutting managements, however, in Rio Grande do Norte State, only certain areas have favorable climate conditions to the development of this crop. Drip irrigation, with a small amount of water, has proven to be an alternative to the viability of cactus pear cultivation in these areas. The research aimed to evaluate the effects of different levels of saline water and manure organic fertilization on the morphological characteristics and production of fresh and dry matter of the prickly-pear cactus cv. Mi?da (Nopalea cochenillifera Salm Dick) in a dense planting system. The experiment was conducted at the Experimental Station of Terras Secas (EMPARN), Pedro Avelino, latitude 5?31'21" South and longitude 36?23'14" West. The soil was classified as Typical Cambisol Haplicum Carbonate and the water used in irrigation, C4S1T3 (5,25 dS.m-1), with planting spacing of 2.0 x 0.25 m (20,000 plants ha-1). A completely randomized design in a split plot was used, where water levels (0, 7.5, 15.0 and 30.0 mm month-1) with 10 days intervals, were the main plots and organic fertilization (0 , 25 and 50 Mg ha-1 yr-1) the subplots, with four replicates. The measured morphological characteristics were number of cladodes, height and volume of the plant; length, width, perimeter, thickness, area and cladodes area index, fresh and dry matter production, dry matter content, water use efficiency (WUE) and damage promoted by cochineal pest (Diaspis echinocacti) and soft rot (Erwinia carotovora). There was no influence (P>0.05) of organic fertilization on most variables, particularly in relation to the production of fresh and dry matter. The water levels had a significant influence (P<0.05) on most variables, promoting higher height and volume of the plants, larger and thicker cladodes, and increase on fresh and dry matter production (13.55 Mg DM ha-1 yr-1). The absence of irrigation caused a significant expansion in plant damage caused by the cochineal pest and when irrigated with different water levels there was an increase in damage and stand loss, caused by soft rot, been more intense at the higher water level.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/20506 |
| Date | 09 March 2015 |
| Creators | Dantas, Fernanda Daniele Gon?alves |
| Contributors | 12756814687, http://lattes.cnpq.br/2634327319977683, Aguiar, Emerson Moreira de, 10633049468, http://lattes.cnpq.br/3844922335813780, Lima, Guilherme Ferreira da Costa, 00000000000, http://lattes.cnpq.br/5106078493184772, Medeiros, Jos? Francismar de, 27348636420, http://lattes.cnpq.br/9567732690904131, Lima, Guilherme Ferreira da Costa, Novaes, Luciano Patto |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM PRODU??O ANIMAL, 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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