Curvas de crescimento do fruto de cafeeiro cv. Obatã IAC 1669-20 em diferentes alinhamentos de plantio

Made available in DSpace on 2013-09-27T14:53:19Z (GMT). No. of bitstreams: 1 WOS000290327200005.pdf: 951981 bytes, checksum: bdb57110c16a20fb52b81ce1d9680f29 (MD5) Previous issue date: 2011-01-01 Made available in DSpace on 2013-09-30T17:51:51Z (GMT). No. of bitstreams: 1 WOS000290327200005.pdf: 951981 bytes, checksum: bdb57110c16a20fb52b81ce1d9680f29 (MD5) Previous issue date: 2011-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:13:54Z No. of bitstreams: 1 WOS000290327200005.pdf: 951981 bytes, checksum: bdb57110c16a20fb52b81ce1d9680f29 (MD5) Made available in DSpace on 2014-05-20T13:13:54Z (GMT). No. of bitstreams: 1 WOS000290327200005.pdf: 951981 bytes, checksum: bdb57110c16a20fb52b81ce1d9680f29 (MD5) Previous issue date: 2011-01-01 The growth of the coffee fruit is highly dependent on physiological and environmental factors. Environmental factors that most influence the yield of coffee during the critical growth stages are the minimum and maximum temperatures of air, which are affected by solar radiation and depend on the apparent path of the sun. This research work correlated dry mass versus fresh mass, and, fresh and dry mass as function of days after flowering of fruit coffee cv. Obata IAC 1669-20 planted in three different alignments based on the apparent trajectory of the sun, in Jaboticabal, SP. The planting was aligned according to the apparent path of the sun. There were three treatments with four replications, a total of twelve plots, each plot with one hundred plants of coffee, each treatment corresponded to an alignment of planting. The three alignments used showed no differences with respect the average fresh and dry mass. The growth rate of fruit, in fresh weight, was higher in the exponential phase, and in dry mass was higher in the linear stage. The dry weight (DW) can be estimated from the fresh weight (FW) using the model: DW = A1*exp(FW/t1). The sigmoidal model that represents the fruit growth in of coffee plants in fresh and/or dry mass in terms of days after flowering (DAF) was: FW(DW) = A2+[(A1-A2)/(1+exp(DAF-x0)/dx)]. Univ Estadual Paulista, Depto Recursos Nat, FCA UNESP, BR-18610307 Botucatu, SP, Brazil FCAV UNESP, Depto Ciencias Exatas, BR-14884900 Jaboticabal, SP, Brazil Univ Estadual Paulista, Depto Recursos Nat, FCA UNESP, BR-18610307 Botucatu, SP, Brazil FCAV UNESP, Depto Ciencias Exatas, BR-14884900 Jaboticabal, SP, Brazil