Open AccessEffects of potassium levels on growth and productivity of potato varieties in inner terai of Nepal
Author(s) -
Urbashi Panthi,
Sampurna Bartaula,
Anil Adhikari,
Kiran Timalsena,
Sagar Khanal,
Susan Subedi
Publication year - 2019
Publication title -
journal of agriculture and natural resources
Language(s) - English
Resource type - Journals
eISSN - 2661-6289
pISSN - 2661-6270
DOI - 10.3126/janr.v2i1.26090
Subject(s) - randomized block design , potassium , productivity , mathematics , canopy , horticulture , yield (engineering) , nutrient , growing season , agronomy , biology , botany , chemistry , ecology , materials science , organic chemistry , metallurgy , economics , macroeconomics
Potassium is an essential nutrient for potato due to its direct effects on the growth, yield and quality of potato tubers. This study was carried out at Lamahi, Dang Nepal during winter season of 2018. Two potato variety (Local and Cardinal) and five levels of potassium (30, 40, 60, 80 and 100 kg K2O/ha) were evaluated in two factorial randomized block design with three replications. The application of potassium at 100 kg/ha produced significantly highest plant canopy, stem diameter and leaf length for the both varieties. The highest tuber number per plant (10.3 for Local and 17.6 for cardinal) and tuber weight (19.7 g for Local and 49 g for Cardinal) were obtained with the application of 100 kg K2O/ha. The highest gross margin was found with this level of potassium. Therefore, farmers should apply 100 kg K2O to potato to achieve maximum production and benefit.