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Drydown coefficient analysis in some commercial corn hybrids

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dc.contributor.author Melut, Lucian Ciprian
dc.contributor.author Rosca, Aurelia Elena
dc.date.accessioned 2021-06-11T06:58:40Z
dc.date.available 2021-06-11T06:58:40Z
dc.date.issued 2016
dc.identifier.citation Melut, Lucian Ciprian, Aurelia Elena Rosca. 2016. "Drydown coefficient analysis in some commercial corn hybrids". Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie 59(2): 213-218.
dc.identifier.uri https://repository.uaiasi.ro/xmlui/handle/20.500.12811/1367
dc.description.abstract The concept of drydown or loss of water from the corn grain has been little studied in Romania. Hybrid seed manufacturer's recommendations are not always complete in terms of water loss rate of the grain, than may cause additional costs for farmers, represented by drying after harvest. Choosing a hybrid for a farm must also consider the possibilities of artificial drying, if the selection does not considering an analysis of the rate of water loss of the grain. Also having knowledge about the rhytm of loss of water from grain grown hybrids, we can expect early harvest and a harvest schedul. Based on these considerations, in the spring of 2015, in the village Lovrin, Timisoara, was placed an experimental field that was aimed to evaluate the rate of water loss of the corn grain. It was analyzed a set of 18 commercial hybrids in Romania, assigned in groups of maturity FAO 260-510. Moisture determinations occurred in the first phase to identify physiological maturity stage (humidity 30%) of 3 in 3 days (black layer). Subsequently, determinations were made daily up to a humidity of 15% for each hybrid. Results indicate a percentage of water loss from the grain from 0.28 to 1.1% daily depending on the hybrid. Thus, early hybrids lose water more uniformly than late hybrids (0.58%/day and 0.86%/day). Immediately after reaching physiological maturity, the rate of water loss from early grain hybrids is slower than late hybrids values being 0.47%/day and 0.79%/day respectively. With the synthesis of dry matter in kernel of physiological mautiry value for technological maturity (15%), the rate of water loss in grain presenting values of 0.38%/day for early hybrids and 0.43%/day for late hybrids. Another aspect experimentation was seized after concluding that hybrids flint grain lose water more slowly than dent grain hybrids, averaged 0.33%/day and 0.73%/day respectively. en_US
dc.language.iso en en_US
dc.publisher “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi en_US
dc.subject drydown en_US
dc.subject later loss in corn en_US
dc.subject black layer en_US
dc.title Drydown coefficient analysis in some commercial corn hybrids en_US
dc.type Article en_US
dc.author.affiliation Lucian Ciprian Melut, Aurelia Elena Rosca, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi
dc.publicationName Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie
dc.volume 59
dc.issue 2
dc.publicationDate 2016
dc.startingPage 213
dc.endingPage 218
dc.identifier.eissn 2069-6727


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