EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).
El-Nagy, M., Abou El-Salehein, E., Fekry, W., Wahdan, H. (2020). EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).. EKB Journal Management System, 25(2), 231-246. doi: 10.21608/jpd.2020.120782
Mohamed El-Nagy; Essam Abou El-Salehein; Wafaa Fekry; Helmy Wahdan. "EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).". EKB Journal Management System, 25, 2, 2020, 231-246. doi: 10.21608/jpd.2020.120782
El-Nagy, M., Abou El-Salehein, E., Fekry, W., Wahdan, H. (2020). 'EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).', EKB Journal Management System, 25(2), pp. 231-246. doi: 10.21608/jpd.2020.120782
El-Nagy, M., Abou El-Salehein, E., Fekry, W., Wahdan, H. EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).. EKB Journal Management System, 2020; 25(2): 231-246. doi: 10.21608/jpd.2020.120782

EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).

Journal of Productivity and Development
Article 5, Volume 25, Issue 2, April 2020, Page 231-246  XML PDF (598.86 K)
Document Type: Original Article
DOI: 10.21608/jpd.2020.120782
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Authors
Mohamed El-Nagy1; Essam Abou El-Salehein email 2; Wafaa Fekry3; Helmy Wahdan3
1Plant Prod. Dept. (Horticulture – Vegetables); Fac. Technol. and Dev.; Zagazig Univ., Zagazig, Egypt.
2Plant Production Department, Efficient Productivity Institute, Zagazig University, Zagazig, Egypt.
3Plant Prod. Dept. (Horticulture – Vegetables); Fac. Technol. and Dev.; Zagazig Univ., Zagazig, Egypt.
Abstract
Two field experiments were carried out during 2017 and 2018 seasons atExperimental Farm, Faculty of Technology and Development (Ghazala Region –Zagazig City), Sharkia Governorate (Egypt) to investigate the effect of different potassium sources and zinc fertilizer levels on growth and yield of sweet potato plant cv. Menoufia 6. The experimentwas set up arandomized complete blocks design which included 7 treatments of different sources of potassium and zinc (EDDTA)rates(i.e., potassium silicate  2 mll-1 and 4 mll-1, potassium humate, 2 mll-1 and 4 mll-1 and zinc (EDDTA), 2 mll-1 and 4 mll-1, besides the control treatment without any addition .
The obtained results could be summarized as follows: application of foliar spray with zinc (EDDTA) with4 mll-1, being the most effective treatment on vegetative growth and chemical composition, while 4mll-1 potassium silicate as foliar application caused a significantly increased in tuber yield and quality of sweet potato, followed by the treatment of 4 mll-1 zinc in most cases, in both growing seasons.
Conclusively, it could be concluded that, using the treatment of 4 mll-1 zinc (EDDTA) caused an increases in plant growth parameters and chemical composition of sweet potato plant cv. Menoufia 6, while 4 mll-1 potassium silicate significantly increased tuber yield and quality.
 
 
Keywords
sweet potato; potassium silicate; potassium humate; zinc
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