| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 741.78 KB | Adobe PDF |
Authors
Abstract(s)
A romãzeira é uma planta frutífera de origem mediterrânica que possui certa importância
econômica em alguns países da Europa. Nos anos recentes têm sido publicados diversos estudos
sobre suas propriedades nutricionais, alguns deles mostrando que a fruta é rica em ácido
ascórbico, flavonoides e punicalagina, uma substância que apresenta propriedades
antioxidantes, antifúngicas e antibacterianas. Através dos seus benefícios nutricionais e
medicinais esta fruta tem vindo a tornar-se cada vez mais popular. Atualmente ela é cultivada
em praticamente todos os continentes. Embora tenha adquirido grande importância na região
mediterrânica, e seja cultivada em larga escala na China e no Irão, ainda permanecem questões
em aberto sobre a melhor forma de cultivo desta planta frutífera. Uma das mais relevantes é a
fertilização, visto que há poucos estudos que permitam estabelecer um adequado programa de
fertilização. Com o objetivo de se obter informação que auxilie nas futuras recomendações de
fertilização para a cultura foi proposto este trabalho, com um delineamento completamente
causalizado com cinco tratamento e três repetições. Um dos tratamento consistiu na aplicação
dos três macronutrientes principais, nitrogênio (N), fósforo (P) e potássio (K), e os demais na
ausência de cada um destes nutrientes, além de um tratamento testemunha com ausência de
adubação. O tratamento com adubação NK obteve maior produção média de frutos, sendo de
3,40 kg planta-1, 41,8% a mais que o tratamento que não recebeu adubação (1,98 kg planta-1).
Este tratamento ainda registrou o maior número de frutas por árvore (18,6), obtendo 22,5% a
mais que o tratamento testemunha (14,4). O tratamento NP registrou o maior peso dos frutos
(186,7 g), com 23,3% a mais que o tratamento testemunha (143,3 g). Apesar da tendência para
se registar efeito positivo na produtividade com a adubação, em particular com a aplicação de
N e K, a reduzida duração do experimento e elevada variabilidade experimental não permitiram
que os resultados tivessem diferenças estatisticamente significativas.
Pomegranate is a fruit crop of Mediterranean origin that has increasing economic importance. In recent years, several studies on its nutritional properties have been published, some showing that the fruit is rich in ascorbic acid, flavonoids and punicalagin, a substance that has antioxidant, antifungal and antibacterial properties. Due to its nutritional and medicinal benefits this fruit has becoming increasingly popular. It is currently grown on virtually every continent. Although it has acquired great importance in the Mediterranean region, and being cultivated on a large scale in China and Iran, there are still open questions about the best way to grow this fruit plant. One of the most relevant issue is fertilization, since there are few studies that allow to establish an adequate fertilization program. Thus, this work was delineated to obtain information to assist in future fertilization recommendations for the crop. The experiment was arranged as a completely randomized design with five treatments and three repetitions. One of the treatments consisted of the application of the three main macronutrients, nitrogen (N), phosphorus (P) and potassium (K), and the others consisting on the absence of each one of these nutrients, in addition to a non-fertilized control. The treatment with NK fertilization gave a higher average fruit yield (3.40 kg plant-1), 41.8% more than the treatment that did not receive fertilization (1.98 kg plant-1). This treatment also registered the highest number of fruits per tree (18.6), obtaining 22.5% more than the control treatment (14.4). The NP treatment registered the highest weight of the fruits (186.7 g), 23.3% more than the control treatment (143.3 g). Despite the tendency to be registered a positive effect on productivity with fertilization, in particular with the application of N and K, the short duration of the experiment and the high experimental variability did not allow the results to have statistically significance.
Pomegranate is a fruit crop of Mediterranean origin that has increasing economic importance. In recent years, several studies on its nutritional properties have been published, some showing that the fruit is rich in ascorbic acid, flavonoids and punicalagin, a substance that has antioxidant, antifungal and antibacterial properties. Due to its nutritional and medicinal benefits this fruit has becoming increasingly popular. It is currently grown on virtually every continent. Although it has acquired great importance in the Mediterranean region, and being cultivated on a large scale in China and Iran, there are still open questions about the best way to grow this fruit plant. One of the most relevant issue is fertilization, since there are few studies that allow to establish an adequate fertilization program. Thus, this work was delineated to obtain information to assist in future fertilization recommendations for the crop. The experiment was arranged as a completely randomized design with five treatments and three repetitions. One of the treatments consisted of the application of the three main macronutrients, nitrogen (N), phosphorus (P) and potassium (K), and the others consisting on the absence of each one of these nutrients, in addition to a non-fertilized control. The treatment with NK fertilization gave a higher average fruit yield (3.40 kg plant-1), 41.8% more than the treatment that did not receive fertilization (1.98 kg plant-1). This treatment also registered the highest number of fruits per tree (18.6), obtaining 22.5% more than the control treatment (14.4). The NP treatment registered the highest weight of the fruits (186.7 g), 23.3% more than the control treatment (143.3 g). Despite the tendency to be registered a positive effect on productivity with fertilization, in particular with the application of N and K, the short duration of the experiment and the high experimental variability did not allow the results to have statistically significance.
Description
Keywords
Punica granatum L. romã Fertilização Produção de frutos Nutrição da colheita