Yield and yield components of potato (Solanum tuberosum L.) as influenced by different N and P fertilization levels
1997
Tesfaye Abebe | Anteneh Abewa | Eshetu Janka (Ministry of Agriculture, Bahir Dar (Ethiopia))
Soil fertility is one of the crop production in the north western part of Ethiopia. Fertilizer trial on potato was conducted for two consecutive years (1992-1993) at two representative soil types of major potato growing areas of the region. The trial was conducted at Adet red notosols and Enjibara's light gray soil. The result indicated highly significant response (p less than 0.01) to both N and P while their interaction effect is non-significant. It was also observed that there is highly significant variation in the available soil P over location. The highest marketable tuber yield of 293.86 q ha-1 was obtained from the application of 81/138 kg ha-1 N/P level. However, the economically feasible levels were found to be 81/0 followed by 81/69 kg ha-1 N/P with a marginal rate of return of 1418 percent and 1361 percent, respectively. The yield increase of these levels over the control (0,0) was 51.22 percent and 73.32 percent, respectively. Hence, though ranks second economically, the 81/69 kg ha-1 N/P level is recommended to be used since the soils at both locations show significant response and the plants exhibit deficiency symptoms of P indicating the insufficiency of P available in the soil.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Ethiopian Institute of Agricultural Research