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摘要
O estudo teve por objetivo avaliar componentes do crescimento e do estado nutricional de porta-enxertos de limoeiro cravo, em fun o de doses de nitrog那nio, f車sforo e pot芍ssio via fertirriga o. O delineamento experimental foi inteiramente casualizado, emesquema fatorial 33 + 1, sendo 3 fatores (nitrog那nio, f車sforo e pot芍ssio - NPK), em 3 doses e uma testemunha (sem aduba o), com 3 repeti es. A unidade experimental foi constitu赤da pela m谷dia de dois porta-enxerto (Hipobioto) de limoeiro cravo (Citrus limonia L. Osbeck), cada qual situado em um tubete de 2,8 cm de diametro e 12,3 cm de altura, perfurados na base e preenchido substrato composto de casca de Pinus e vermiculita. As doses utilizadas foram constitu赤das por n赤veis de N (460; 920 e 1840 mg dm-3), P (50; 100 e 200 mg dm-3) ede K (395; 790 e 1580 mg dm-3). As aduba es com N e K foram realizadas atrav谷s de fertirriga es e o P adicionado ao substrato de casca de Pinus e vermiculita antes da semeadura. Quando as plantas estavam com 133 dias ap車s a germina o, foram subdivididasem sistema radicular e parte a谷rea para determina o da massa seca, altura, 芍rea foliar, diametro do caule e conte迆do de nutrientes. As doses de N, K e P de 920 mg dm-3, 790 mg dm-3 e 100 mg dm-3, respectivamente, foram suficientes para o desenvolvimento adequadode porta-enxertos de limoeiro cravo em tubetes. The aim of the study was to evaluate the graft box of lemon tree (of the family Rutaceae) nutritional state and its components of growth in function of nitrogen, phosphorus and potassium dose byfertilization. The experimental outlining was entirely made casually in factorial scheme 33 + 1, being 3 factors (nitrogen, phosphorus and potassium 每 NPK), 3 doses and an evidence (without fertilization), with 3 repetitions. The experimental unit was constituted by twotubes of 2,8 cm of diameter and 12,3 cm high with a graft box (Hipobioto) of lemon tree (of the family Rutaceae) in each tube. The doses used were constituted by doses of N (460; 920 e 1840 mg dm-3), P (50; 100 e 200 mg dm-3) and K (395; 790 e 1580 mg dm-3). Thefertilization with N and K was carried out by fertirrigations and the P added to the substract of Pinus rind and vermiculite before the seeding. When the plants were 133 days after the germination they were subdivided in radicular system and air part for the determination of the dry matter mass, height, foliar area, stem diameter and contents of nutrients. The N, K and P doses of 920 mg dm-3, 790 mg dm-3 and 100 mg dm-3, respectively, were enough forthe suitable development of the graft box of lemon tree (
