1M.Sc. Scholars, ANASTU, Kandahar
2Principal Scientist and Ex-Professor, ICAR-Indian Agricultural Research Institute
3Scientist, ICAR-Indian Institute of Maize Research, New Delhi, 110 012
Afghanistan National Agricultural Sciences and Technology University, Kandahar, Afghanistan
*Corresponding author's Email: sliari@gmail.com
Online published on 20 July, 2020.
A field experiment was carried out at the main block of Tarnak Farm of Afghanistan National Agricultural Sciences and Technology University, Kandahar during the summer season of 2015, to determine the effects of different potassium fertilizer levels on yield and economics of hybrid maize (Zea mays L.). The experiment consisted seven potash application treatments of 30, 60, 90, 120, 150, 180, 210 kg K2O/ha and a control in a randomized complete block design (RCBD) and replicated thrice. Grain and stover yields were significantly affected by 90 kg K2O/ha which were at par up to 210 kg K2O/ha. Significantly higher net returns (108.6 × 103 Afghani/ha) and benefit: cost ratio (1.16) were observed by the application of 180 and 60 kg K2O/ha, respectively. However, a dose of 157.7 kg K2O/ha was found as economic optimum dose for growing maize in semi-arid condition in Kandahar province of Afghanistan.
Economic optimum dose, Maize, Net returns, Potassium, Yield
