Influence of sowing type, time and seeding rates on the buckwheat (Fagopyrum esculentum) yield quality
2013
Vilcans, M., Latvia Univ. of Agriculture, Jelgava (Latvia);Latvian Plant Protection Research Centre, Riga (Latvia) | Gaile, Z., Latvia Univ. of Agriculture, Jelgava (Latvia)
In the last years total area of buckwheat (Fagopyrum esculentum) has increased notably in Latvia, including the Eastern part of the country but there is a lack of actual information about buckwheat growing, best terms of sowing and seeding rates. This study presents the influence of different sowing times, methods and rates on the seed quality of buckwheat yield – (TGW) thousand grain (nutlet) weight and (HLV) bulk density. A field experiment was conducted on the farm “Arāji”, Krāslava region in 2010 and 2012. Buckwheat was sown on six different dates - 15.05, 25.05, 30.05, 05.06, 10.06 and 15. 06. Two types of sowing were used – drill sowing, where 4 seed rates were used - 200, 300, 400, 500 fertile nutlets per m2 , and the column sowing with the three seed rates - 150, 250, 300 fertile nutlets per square m. It was found out that crop sowing time and type significantly affected buckwheat yield quality. Compensation mechanisms of yield in early terms of sowing when lower seeding rates were used were expressed less than that in later sowing terms. It could be concluded, that in early terms different seeding rates could be used with equal success. In later terms of sowing, smaller seeding rates are more appropriate. After two year investigation the most suitable sowing terms were around 4th and 9th June, where TGW and HLW was the highest. The most inappropriate terms were around 25th and 30th May, because meteorological conditions after sowing in both years were unfavorable that resulted in 0.5 to 1.0 t haE-1 lower yields.
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