Effect of Source and Level of Potash on Yield and Quality of Potato Tubers
Year: 2010
Type: article
Abstract: Field experiments were conducted for two consecutive seasons at NARC potato research area Islamabad, Pakistan, to study comparative effect of source, levels and methods of K fertilization on yield and quality of potato produce. Nitrogen and phosphorus were applied at 250 and 125 kg ha -1 , respectively whereas three K2O levels, 0, 150 and 225 kg ha -1 from two sources of potash (SOP and MOP) were tested. Potassium was also applied as foliar spray at 1% K2O solution at 30, 45 and 60 days after germination (DAG) and soil was also amended by 150 kg K2O ha -1 . A significant increase in tuber yield with K application at 150 kg ha -1 as K2O from both the K sources over NP treatment was recorded. Increase in tuber yield with K2O @ 225 kg ha -1 was statistically nonsignificant compared to 150 kg K2O ha -1 . A positive interaction between soil applied P and K with N in plant system was observed. Potassium treatments not only increased K concentration but also affected N and P contents in potato tubers. The quality parameters like dry matter, specific gravity, starch contents, vitamin-C and ash contents were also affected with P and K fertilization.
Source: Pakistan Journal of Botany
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2187920934