Stability and Maturity of Different Poultry Manures and Potential Utilization for Horticultural Production

M. Mataa, Namakau Manzi, K. Munyinda
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引用次数: 4

Abstract

This study evaluated stability, maturity and the efficacy of different poultry litter for possible use in container plant production. Three types of poultry manure- Battery cage (BC), Deep litter (DL) and Free range (FR) were used, with Kraal manure (KM) as a comparison. The experiment was set up as a Split- split design with 6 replications. Composting period was main plot, poultry manure type the split plot and mixing ratio as the split- split plot. The litter was mixed with garden soil in 2 ratios (3:1 and 1:1 soil: manure ratio) and tested for up to 12 weeks. Rape (Brassica napus) was used as a bioassay for maturity, which was determined at 1 month, 2 months and 3 months. The pH declined slightly from 7 to about 6 for all treatments except for the kraal manure. Respiration trends were similar to electrical conductivity. Within 2 weeks of curing the respiration rate for all manures declined to below 4 mg CO2- C/ kg. At the end of 12 weeks curing Battery cage had highest total nitrogen (2.32 %), followed by Free range (1.25 %), Deep litter (0.73 %) and Kraal manure was lowest at 0.35 %). Maturity (rape survival) increased with compositing time. After 3 months of curing Kraal manure had highest survivability of rape. The DL at 1:1 ratio had the lowest survival of 67%. At 12 weeks except for BC at 3:1 all treatments had 100 % survival. The results showed that nitrogen rich manures (DL and BC) needed longer curing in order for them to reach maturity.
不同禽粪的稳定性、成熟度及其在园艺生产中的潜在利用
本研究评估了不同家禽产仔的稳定性、成熟度和功效,以供集装箱工厂生产之用。试验采用3种类型的鸡粪(BC)、深窝粪(DL)和散养粪(FR),并以克拉尔粪(KM)为对照。试验设6个重复,采用裂-裂设计。堆肥期为主要小区,禽粪类型为分块小区,混合比例为分块-分块小区。将凋落物与花园土壤按3:1和1:1的土粪比混合,试验长达12周。以油菜(Brassica napus)为研究对象,分别在1个月、2个月和3个月进行成熟度测定。除粪肥外,其余处理的pH值均从7下降到6左右。呼吸趋势与电导率相似。在养护2周内,所有肥料的呼吸速率降至4 mg CO2- C/ kg以下。12周养护结束时,蓄电池笼总氮最高(2.32%),散养笼次之(1.25%),深层凋落物最低(0.73%),Kraal粪肥最低(0.35%)。成熟度(油菜存活率)随合成时间的延长而增加。处理3个月后,油菜成活率最高。1:1比例的DL生存率最低,为67%。在12周时,除3:1的BC外,所有治疗的存活率均为100%。结果表明,富氮肥料(DL和BC)需要较长的养护时间才能达到成熟。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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