Influence of plant spacing on seed and ware tuber production of potato (Solanum tuberosum L.) cultivars grown in Eastern Ethiopia

Tesfa Binalfew, Nigussie Dechassa, Tamado Tana
2016 Science Technology and Arts Research Journal  
Plant spacing is an important agronomic consideration in the production of potato ( tuberosum L.). However, the spacing of 30 cm between seed tubers and 75 cm between rows has been invariably used across all parts of Ethiopia. The practice of using this spacing across the country regardless of the variety to be cultivated, the purpose of production (s ware potato), agro-ecology, etc. may lead to lower tuber yields. To elucidate this problem and the effect of plant spacing on the productivity of
more » ... the productivity of different potato varieties, field experiments were conducted in Hirna and Haramaya districts in The treatments consisted of five plant spacing and four potato cultivars. The experiment at each location was laid out as a completely randomized block design in a factorial arrangement and replicated three times per treatment. Analysis of total, marketable and unmarketable tuber number per unit area obtained indicated that the effect of cultivar and spacing highly significantly (p<0.01) influenced. The cultivar and plant spacing highly significant ( affect tubers size distribution. Total tuber yield responded highly significantly ( effects of cultivar and spacing. Results of the experiment revealed that keeping intra spacing of 25 cm, the inter-row spacing of 50 cm and 60 cm produced total tubers of 31.24 and 30.97 tone ha -1 respectively, i.e. more than 41% the yield of commonly used spacing of 75 cm x 30 cm. The highest number of seed obtained at high planting density, i.e. 50 cm x 25 cm and 60 cm x 25 cm requires more planting material and also makes inter difficult, the spacing of 60 cm x 25 cm was recommended for maximizing production of both seed and ware potatoes. Abstract Article Information Plant spacing is an important agronomic consideration in the production of potato (Solanum . However, the spacing of 30 cm between seed tubers and 75 cm between rows has been invariably used across all parts of Ethiopia. The practice of using this spacing across the country regardless of the variety to be cultivated, the purpose of production (seed potato or ecology, etc. may lead to lower tuber yields. To elucidate this problem and the effect of plant spacing on the productivity of different potato varieties, field experiments were conducted in Hirna and Haramaya districts in the Hararghe Zones of Eastern Ethiopia. The treatments consisted of five plant spacing and four potato cultivars. The experiment at each location was laid out as a completely randomized block design in a factorial arrangement Analysis of total, marketable and unmarketable tuber number per unit area obtained indicated that the effect of cultivar and spacing highly 0.01) influenced. The cultivar and plant spacing highly significant (p<0.01) tubers size distribution. Total tuber yield responded highly significantly (p<0.01) to the effects of cultivar and spacing. Results of the experiment revealed that keeping intra-row row spacing of 50 cm and 60 cm produced total yield of potato respectively, i.e. more than 41% the yield of commonly spacing of 75 cm x 30 cm. The highest number of seed-sized tubers (40-75 g) was obtained at high planting density, i.e. 50 cm x 25 cm and 60 cm x 25 cm. Since spacing 50 cm requires more planting material and also makes inter-cultivation practices more spacing of 60 cm x 25 cm was recommended for maximizing production of both Article History: Received : Revised : Accepted Keywords Potato Tuber size Intra-Inter-Spacing
doi:10.4314/star.v4i3.2 fatcat:nla6tv4t6rbtncqsfacpdzq2a4