Potato is an important
food security and cash crop in eastern Hararghe Zone. However, the productivity
of the crop is constrained by low soil fertility and poor fertilizer management
practices. Therefore, a field experiment was conducted at Haramaya watershed in
Haramaya District, Eastern Ethiopia; during the 2014 off season
using irrigation. The main
objective of the study was to assess the effects
of integrated nutrient management on potato growth, yield and yield components.
The treatments were three rates of farmyard manure (0, 5, 10, t ha﹣1),
three rates of N (0, 55.5, 111 kg N ha﹣1), and three rates of phosphorus
(0, 46, 92 kg P2O5 ha﹣1). The experiment was laid out as a randomized complete
block design in (RCBD) in a factorial arrangement with three replications.
The results showed that the effect of integrated use of organic and inorganic
fertilizer had significant influence on plant height, above ground biomass, day to maturity, total tuber yield, average
tuber number/hill, average tuber mass/hill, marketable tuber number and
tuber dry matter yield. The highest marketable tuber yields of 38.65 t ha﹣1 followed by 36.24 t ha﹣1 were obtained in response to a combined
application of farm yard manure, N and P at the rates of 10 t FYM ha﹣1 111 kg N ha﹣1 92
kg P2O5 ha﹣1 and 10 ton
FYM ha﹣1 111 kg N ha﹣1 46 kg P2O5 ha﹣1, respectively. The
marketable and total tuber yields were positively and significantly correlated
with all growth and yield components studied but negatively and significantly
correlated with the number of main stem/hill, unmarketable tuber yield. In conclusion, application of farm yard manure with, N and P not
only significantly
improved productivity, but also profitability of the crop.
Cite this paper
Mohammed, A. , Mohammed, M. , Dechasa, N. and Abduselam, F. (2018). Effects of Integrated Nutrient Management on Potato (Solanum tuberosum L.) Growth, Yield and Yield Components at Haramaya Watershed, Eastern Ethiopia. Open Access Library Journal, 5, e3974. doi: http://dx.doi.org/10.4236/oalib.1103974.
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