Colonization and growth of coffee seedlings inoculated with arbuscular mycorrhizal fungi in soils with P levels and controlled moisture

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T11:25:08Z No. of bitstreams: 2 samuel_dias_moreira.pdf: 1401321 bytes, checksum: e072585eb76f9e6a8ff7adb8ac97c8da (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5)Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T11:46:41Z (GMT) No. of bitstreams: 2 samuel_dias_moreira.pdf: 1401321 bytes, checksum: e072585eb76f9e6a8ff7adb8ac97c8da (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5)Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T11:48:32Z (GMT) No. of bitstreams: 2 samuel_dias_moreira.pdf: 1401321 bytes, checksum: e072585eb76f9e6a8ff7adb8ac97c8da (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5)Made available in DSpace on 2014-12-23T11:48:32Z (GMT). No. of bitstreams: 2 samuel_dias_moreira.pdf: 1401321 bytes, checksum: e072585eb76f9e6a8ff7adb8ac97c8da (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2014Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes)Os fungos micorr?zicos arbusculares (FMA) s?o capazes de estimular o crescimento das plantas, sobre tudo pelo efeito na nutri??o mineral e hidrata??o, onde possibilita maior absor??o de ?gua e nutrientes. Objetivou-se com esse trabalho avaliar a coloniza??o e o crescimento de plantas de caf? inoculadas com FMA em solos com doses de f?sforo (P) e diferentes umidades. Foram produzidas mudas de caf? (Coffea arabica) micorrizadas utilizando in?culos contendo esporos de Glomus calrum, Glomus etunicatum e Scutellospora heterogma. O per?odo de muda durou 160 dias e posteriormente, conduzidas em dois experimentos, foram plantadas em vasos pl?sticos e crescidas por 150 dias em casa de vegeta??o. Para avaliar o efeito de P o experimento foi conduzido no delineamento em blocos casualizados, com quatro repeti??es, em esquema fatorial 4 x 4 sendo, as doses de 0,00; 0,74; 1,48 e 2,96 g kg-1 de P2O5 por planta e os tr?s FMA mais o controle n?o inoculado. E para avaliar o efeito da umidade do solo o delineamento experimental utilizado foi o mesmo do P e o fatorial tamb?m foi 4 x 4 sendo, a umidade do solo 40, 60, 80 e 100% da capacidade de campo e os mesmos tratamentos f?ngicos. Os resultados para incremento na altura, ?rea foliar, massa seca das ra?zes, massa seca do caule e porcentagem de coloniza??o mostraram efeito significativo da intera??o entre os fatores FMA x doses de f?sforo. E para intera??o dos fatores FMA x umidade do solo, os resultados mostraram efeito significativo somente para incremento na ?rea foliar, massa seca das ra?zes e rela??o parte a?rea/ra?zes. A coloniza??o dos fungos Glomus clarum, Glomus etunicatum e Scutellospora heterogma tiveram resultados distintos, com comportamentos semelhantes, para as doses de P diminuindo linearmente e para a umidade tipo quadr?tico. A inocula??o de FMA, a adi??o de P e o aumento da umidade do solo aumentam o crescimento do cafeeiro.Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014.ABSTRACT Arbuscular mycorrhizal fungi (AMF) are able to stimulate the growth of plants, especially the effect on mineral nutrition and hydration, which allows for greater absorption of water and nutrients. The objective of this study was to evaluate the colonization and growth of coffee plants inoculated with AMF in soils with phosphorus doses (P) and different moistures. Coffee seedlings (Coffea arabica) were produced using mycorrhizal inoculum containing spores of de Glomus calrum, Glomus etunicatum and Scutellospora heterogma. The seedlings period lasted 160 days and subsequently conducted two experiments were planted in plastic pots and grown for 150 days in a greenhouse. To evaluate the effect of the P experiment was conducted in a randomized block design with four replications in a factorial 4 x 4 with doses of 0.00; 0.74; 1.48 and 2.96 g kg-1 of P2O5 per plant and three FMA more the non-inoculated control. And to evaluate the effect of soil moisture the experimental design was the same as the P factorial and was also 4 x 4, with soil moisture 40, 60, 80 and 100% of field capacity and the same fungal treatments. The results for height increment, leaf area, dry weight of roots, dry weight of stem and percentage of colonization showed a significant interaction between AMF x phosphorus doses factors. And for interaction between factors AMF x soil moisture, the results showed a significant effect only for increase in leaf area, dry weight of roots and relative air / root part. The colonization of fungi Glomus clarum, Glomus etunicatum and Scutellospora heterogma had different results with similar behaviors, to doses P decreasing linearly and quadratic type to soil moisture. The AMF inoculation, the addition of P and increased soil moisture increase the growth of the coffee