EFFECT OF SOIL-N APPLICATION AND FOLIAR NUTRITION WITH Zn AND Mn ON GROWTH, FLOWERING AND KEEPING QUALITY OF AMARYLLUS PLANTS (HIPPEASTRUM VITTATUM, HERB) | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 8, Volume 19, Issue 2, July 2005, Page 79-96 PDF (626.91 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2005.197836 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mostafa M. Rady1; Ebtsam M. Abdella2; Mahmoud A. Hassanain2 | ||||
| 1Botany Dept., Fac. Agric., Fayoum Branch, Cairo Univ., Egypt. | ||||
| 2Hort. Dept., Fac. Agric., Fayoum Branch, Cairo Univ., Egypt. | ||||
| Abstract | ||||
| Apot experiment was conducted to study the effect of soil-N fertilization rates (2 and 4 g of ammonium nitrate/plant) and foliar spray with Zn and Mn at 2 concentrations (100 and 150 ppm for each) on the vegetative growth, flowering and chemical composition of amaryllus (Hippeastrum vittatum, herb) plants. The obtained data showed that, fertilizing amaryllus plants with 4 g ammonium nitrate/plant significantly increased the vegetative growth characters i.e., plant height, number of leaves/plant, leaves area, fresh and dry weights of leaves, bulbs and the whole plant. Moreover, increased number of bulbs and bulblets/plant, bulb size and bulb dry weight. Flowering traits such as length of floral stalk, number of flowers on floral stalk, average dry weight of floral stalk and vase life of flowers were increased as well. The same rate (4 g) of N-fertilization also led to the increase in the concentration of chlorophylls (a and b), carotenoids, total carbohydrates, anthocyanin in flowers at picking time and five days later, and leaves content of N and P. The 2 g ammonium nitrate application/plant significantly increased both K and Zn contents in plant leaves. On the other side, leaf content of Mn and Fe was not affected with the 2 or 4 g ammonium nitrate rate. Foliar spray with the mixture of Zn and Mn at the rate 150 ppm of each significantly increased all the above mentioned vegetative growth characters and flowering traits. The tested treatments also caused insignificant increase in the leaves content of chlorophylls (a and b), carotenoids, total carbohydrates, flowers content of anthocyanin at picking time and 5 days later, and accumulation of N and K. The greatest accumulation of P occured when plants were sprayed with Mn at 150 ppm. On the contrary, the highest value of Fe was observed in plants sprayed with Zn and Mn at the concentrations of 150 and 100 ppm, respectively. Regarding the combined effect of soil N application and foliar spray with (Zn+Mn), the results revealed that, fertilizing the amaryllus plants with 4 g ammonium nitrate and foliar application with mixture of Zn and Mn at 150 ppm concentration for each significantly increased all vegetative growth characters, floral parameters, leaves content of chlorophylls (a and b), carotenoids, total carbohydrates, N, P and flowers content of anthocyanin at the time of picking or five days later. The greatest plant content of K was found when a plant recivied 2 g of N and sprayed with Zn and Mn at 150 ppm for each. Providing amaryllus plants with 2 g of ammonium nitrate and foliar spraying with only Zn at 150 ppm resulted in the greatest leaf content of Zn and Fe. | ||||
| Keywords | ||||
| Amaryllus; Hippeastrum vittatum; Soil-N Application; Foliar Znand Mn-Nutrition; Vegetative growth; flowering; Chemical composition | ||||
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