{"title":"Effect of method of urea solution application on the nutritive value of treated rice straw","authors":"M.N.M. Ibrahim, J.B. Schiere, H.G.D. Perera","doi":"10.1016/0141-4607(86)90116-2","DOIUrl":null,"url":null,"abstract":"<div><p>Rice straw was treated with 4% urea (w/w) dissolved in water to result in straw to water ratios of 1:1, 1:0·3 and 1:0·1. The methods of urea solution application were: uniform mixing of straw and solution, mixing of 10% of the straw with solution stacking the rest of the straw above this and adding urea solution on to straw after stacking. Assessments were based on the distribution of total nitrogen added, water-soluble and free ammonia nitrogen and IVOMD of the treated material.</p><p>When urea solution was uniformly mixed with straw the total nitrogen, water-soluble NH<sub>3</sub>-N and IVOMD of the straw treated with a straw to water ratio of 1:1 or 1:0·3 were not significantly different (IVOMD values, 52% and 53%). Water at 1:0·1 resulted in significantly lower (<em>P</em> < 0·01) N contents and IVOMD values.</p><p>Addition of urea solution on to stacked straw or mixing of solution with a limited quantity of straw resulted in N and digestibility gradients within the stack.</p></div>","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"18 3","pages":"Pages 225-232"},"PeriodicalIF":0.0000,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90116-2","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agricultural Wastes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0141460786901162","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
Rice straw was treated with 4% urea (w/w) dissolved in water to result in straw to water ratios of 1:1, 1:0·3 and 1:0·1. The methods of urea solution application were: uniform mixing of straw and solution, mixing of 10% of the straw with solution stacking the rest of the straw above this and adding urea solution on to straw after stacking. Assessments were based on the distribution of total nitrogen added, water-soluble and free ammonia nitrogen and IVOMD of the treated material.
When urea solution was uniformly mixed with straw the total nitrogen, water-soluble NH3-N and IVOMD of the straw treated with a straw to water ratio of 1:1 or 1:0·3 were not significantly different (IVOMD values, 52% and 53%). Water at 1:0·1 resulted in significantly lower (P < 0·01) N contents and IVOMD values.
Addition of urea solution on to stacked straw or mixing of solution with a limited quantity of straw resulted in N and digestibility gradients within the stack.
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