Vermiculite and shading in the formation of 'Rangpur' lime rootstock

‘Rangpur’ lime (Citrus limonia Osbeck cv. Cravo) is widely used as a rootstock for citrus seedlings, although factors such luminosity and substrate composition are extremely important to obtain quality seedlings. The objective of this study was analyze the formation seedlings grown in different substrates luminosities. A 3x4 factorial arrangement an RBD with four replications twelve plants. Three luminosities (full sun, 35%, 70% shading) substrate: vermiculite proportions were tested (S1-1: 0, S2-2: 1, S3-1: 2, S4-0: 1). seeds sown 280 cm3 tubes emergence evaluated every two days 30 days, biometric assessments at 30, 60, 90, 120 DAE by measuring height, diameter, leaves, mortality. Root length shoot root dry mass measured days. Seeds full sun showed high ESI values shorter time period, well mortality DAE. Highly shaded environments cause etiolation reduce biomass accumulation DQI. S4 lower results most variables. It recommended use 35% shading associated S1, S2, S3.