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Sustainability 2016, 8(8), 714; doi:10.3390/su8080714

Effects of Pig Slurry as Basal and Panicle Fertilizer on Trace Element Content and Grain Quality in Direct-Seeding Rice

1
Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, Jiangsu, China
2
Taicang Agro-Tech Extension Center, Taicang 215400, Jiangsu, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Iain Gordon
Received: 2 May 2016 / Revised: 11 July 2016 / Accepted: 18 July 2016 / Published: 26 July 2016
(This article belongs to the Section Sustainable Agriculture, Food and Wildlife)
View Full-Text   |   Download PDF [8247 KB, uploaded 26 July 2016]   |  

Abstract

Direct-seeding rice has grown in popularity in recent years and is widespread in China. This study focused on the effects of pig slurry (PS) on grain quality and safety in direct-seeding rice. Application of more than 210 m3·hm−2 increased rice yield and dry matter accumulation, compared with conventional chemical fertilizer treatment (CK2). At the heading and maturing stage, a high dosage of PS (T6, T8 and T9 treatments) promoted uptake of Pb, Cu, Zn, Fe and Mn by rice plants and grain, but retarded uptake of Cr, Co and Ni, indicating an ability to alleviate toxicity of some heavy metals. Compared with CK2, PS alleviated the transfer of Pb, Cr, Co, Ni and Cu from straw to grain, but enhanced the transport of Zn, Fe and Mn. Although PS application slightly diminished the processing quality, including brown rice, milled rice and head milled rice, it significantly decreased the amylose content, optimized the starch profile, and improved the overall quality. The results confirmed the feasibility and safety of PS application to direct-seeding rice, and determined that PS basal and panicle fertilizer could increase yield and improve the rice quality when applied between 210 and 240 m3·hm−2. View Full-Text
Keywords: pig slurry; trace elements; direct-seeding rice; rice quality pig slurry; trace elements; direct-seeding rice; rice quality
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Huang, L.; Yang, J.; Gao, W.; Yang, W.; Cui, X.; Zhuang, H. Effects of Pig Slurry as Basal and Panicle Fertilizer on Trace Element Content and Grain Quality in Direct-Seeding Rice. Sustainability 2016, 8, 714.

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