Journal Of Applied Horticulture ISSN: 0972-1045
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Enhancing productivity of foundation potato seeds produced in vitro using organic and mineral fertilizers

S.S. Taha1, A. Abdel-Wahab1*, A.M.M. Gabr2 and A.M.A. Abd Elgayd3

1Department of Vegetable Crops, Faculty of Agriculture, Cairo University, Giza, Egypt. 2Department of Plant Biotechnology, Biotechnology Research Institute, National Research Centre (NRC), Cairo-12622, Egypt.. 3Regional Development Center, Academy of Scientific Research and Technology, New Valley Governorate, Egypt. Corresponding e-mail: ahmed2hoba@agr.cu.edu.eg

DOI: https://doi.org/10.37855/jah.2025.v27i03.91

Key words: Solanum tuberosum, compost, seaweed, vinasse, potassium, growth, yield
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Abstract:

This study was conducted to evaluate whether organic fertilization alone or with some ameliorative substances could replace mineral fertilization in minituber potato production to increase the quantity and quality of two cultivars (Cara and Hermes) of potato minituber produced in vitro. Two pot experiments were conducted at the greenhouse of the Regional Research Center located in New Valley Governorate during the winter seasons of 2021/2022 and 2022/2023 in Egypt. The experiment included twelve treatments: 100% compost; 100% seaweed; 100% compost + vinasse; 100% seaweed + vinasse; 75 kg K2O/fed; 100 kg K2O/fed; 120 kg K2O/fed; 50% compost + 50% NPK; 50% seaweed + 50% NPK; 25% compost + 75% NPK+ vinasse; 25% seaweed + 75% NPK+ vinasse; and 25% compost + 75% NPK (control). The treatments were arranged in a completely randomized block design with three replicates. The results indicated that plant height, average minituber weight, minituber weight/pot and starch% in both seasons, chlorophyll reading in the first season as well as leaf area in the second season, were significantly higher in Cara cv. than Hermes cv., whereas shoot weight in both seasons, chlorophyll reading in the second season as well as stem number of potato plant only in the first season were significantly higher in Hermes cv. than Cara cv. On the other hand, the treatment of 120 kg K2O caused a significant increment of plant height, leaf area, shoot weight, stem number, starch% and chlorophyll reading, 90 DAP, followed by 100 kg K2O. Moreover, the mixture of 25% compost + 75% NPK+vinasse gave the highest values of tubers number, average minituber weight and minituber weight/pot.


Journal of Applied Horticulture