Preparation, characterisation and field-testing of a biodegradable sodium alginate-based spray mulch

被引：70

作者：

Immirzi, Barbara ^{[2
]}

Santagata, Gabriella ^{[2
]}

Vox, Giuliano ^{[1
]}

Schettini, Evelia ^{[1
]}

机构：

[1] Univ Bari, Dept Engn & Management Agr Livestock & Forest Sys, I-70126 Bari, Italy

[2] CNR, Inst Chem & Technol Polymers, I-80078 Naples, Italy

来源：

BIOSYSTEMS ENGINEERING | 2009年 / 102卷 / 04期

关键词：

AGRICULTURAL APPLICATIONS; RADIOMETRIC PROPERTIES; PROTECTED CULTIVATION; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; PLASTIC FILMS; BLENDS; BEHAVIOR; WATER; STARCH;

D O I：

10.1016/j.biosystemseng.2008.12.008

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An innovative biodegradable coating that can be sprayed was developed and tested as suitable alternative to low density polyethylene (LDPE) films for soil mulching in horticulture. A mulch was created by spraying onto the soil a sodium alginate water-based solution that, at the end of the cultivation cycle, could be tilled into the soil to be biodegraded. The mechanical and radiometric properties, the functionality of the spray coating, and its biodegradation were assessed by means of laboratory measurements and cultivation field tests. in the field, during the cultivation of strawberries, the spray coating was compared with a LDPE mulching film and a straw mulch. The mechanical properties of the coating degraded when exposed in the field, but the coating kept its mulching effect for 6 months. The radiometric properties varied without regular trends, but the coating maintained its capacity to suppress weeds. The biodegradation tests showed that the spray coating samples biodegraded by 65% after 6 months into the soil. (C) 2008 IAgrE. Published by Elsevier Ltd. All rights reserved.

引用

页码：461 / 472

页数：12

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