College of Agriculture & Natural Resources

URI for this communityhttps://rps.wku.edu.et/handle/123456789/45803

College of Agriculture & Natural Resource

Browse

Filters

20221

Settings

Author: search.filters.author.YEKITE TEREFE ZEWDIESubject: search.filters.subject.Blended fertilizer

Search Results

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    EFFECT OF BLENDED NPSB FERTILIZER RATES AND INTRA-ROWSPACINGONGROWTH AND YIELD OF ONION (Allium cepa L.) UNDER IRRIGATIONCONDITION IN GURAGE ZONE, ETHIOPIA
    (wolkite university, 2022-07-04) YEKITE TEREFE ZEWDIE
    The onion is one of Ethiopia's most important vegetable crops, and it is usedvirtuallyevery day as a spice and vegetable in Ethiopian cuisine. However, its productivityisstilllow due to various limiting factors such as low soil fertility, improper plant densityorspacing, disease and pests and lack of production technologies appropriate todif erentvarieties and agro-ecological conditions. Haphard fertilizer application andintrarowplant spacing are among others the most important once. To this ef ect, the present studywas initiated to evaluate the ef ects of NPSB fertilizers and intra-rowspacingonthegrowth and yield performance of onion variety of Bombay red under Enemor districtconditions during the “irrigation” season. There were 12 treatment combinationswhichconsisted of four levels of NPSB fertilizers (0, 122, 244 and 366kg ha -1) and threelevelsofintra-row plant spacing (7.5cm, 10cm and 12.5cm). The experiment was laidout inRandomized Complete Block Design (RCBD) with factorial arrangement and underthreereplications. Results of the statistical analysis showed that the treatments hadhighlysignificant (p ≤ 0.01) dif erence on the their interaction ef ect on both the growthandyield parameters tested (i.e. plant height, leaf number, bulb diameter, bulb length, weightof onion bulbs as well as marketable, unmarketable and total bulb yield). Generally, thetreatment combination of 244kg ha -1 and 7.5cm intra-row spacing recordedthelargestmarketable bulb yield of 41.2t ha -1 , total bulb yield of (41.34t ha -1), harvestingindexof77.17%, and the lowest unmarketable bulb yield of 0.14t ha -1 . Results of the correlationanalysis also showed that almost all the tested parameters of onion werehighlysignificantly and positively correlated with the marketable bulb yield of onion. Besides, asrevealed by the partial budget analysis, the combined treatment of 244kg ha -1 NPSBand7.5cm intra row spacing resulted in the highest net benefit increase of Birr 893,390whencompared with the other treatments combinations. Hence, the combined applicationof244kg ha -1 of NPSB fertilizers and intra-row spacing 7.5cm is recommendedforonionproduction in Enemor District as well as areas with similar agro-ecological conditions.However, since the study was conducted only for a single season and in only onelocation,further research is recommended to be carried out in more other locations as well asatdif erent seasons.