Laboratory study of the nutrient release rate for vinasse on sandy soil and three coastal clay soils of Guyana
<strong>Purpose</strong> Vinasse is produced in large quantities as a by-product from bioethanol production. To ensure environmental sustainability, a beneficial use was sought. Previous study showed that short-term crops grown with vinasse-amended soil provided higher yield than crops t...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
OICC Press
2020-06-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
| Subjects: | |
| Online Access: | http://ijrowa.khuisf.ac.ir/article_672249_c5e2b5b7d1b264ad266414b1d5862c78.pdf |
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| Summary: | <strong>Purpose</strong> Vinasse is produced in large quantities as a by-product from bioethanol production. To ensure environmental sustainability, a beneficial use was sought. Previous study showed that short-term crops grown with vinasse-amended soil provided higher yield than crops treated with chemical NPK (15:15:15) fertilizer. To understand this phenomenon, this study sought to establish the nutrient release rates of vinasse in the agricultural soils of Guyana.<br /> <strong>Methods</strong> Soils representative of the three most common and one futuristic agricultural land in Guyana were fertilized with vinasse, then watered as with normal course of plant growth of cash-crops for twelve weeks. The soil was sampled periodically, and the soil nutrients were determined.<br /> <strong>Results</strong> The nutrient availability from the application of vinasse as a soil amendment was greater for the clay soils than the sandy soil. EC was high while there was high availability of N, Ca, Mg, Fe and Mn during the 6-12<sup>th</sup> week. There was no discernable trend for tiwiwid sand.<br /> <strong>Conclusion</strong> In this laboratory study, high nutrient availability was observed in weeks 6-12 for the three clay soils studied. This period is the fruit and foliage growth phase for most short-term crops; hence, this suggests that vinasse is a good soil amendment for short-term crops in these soils. Vinasse did not improve the fertility of sandy soils; hence, it would be unsuitable as a fertilizer source in the Intermediate Savannahs of Guyana. Further studies should be done to fully determine the soil nutrient dynamics and the nutrient uptake. |
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| ISSN: | 2195-3228 2251-7715 |