Vermicompost, Phosphorous Nano-Fertiliser and Humic Acid: Their Effect on the Activity of Inorganic Pyrophosphatase Enzyme and its Thermodynamic Parameters

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-03-29 DOI:10.3233/ajw230022

Luma Salih Jabbar Al-Taweel, Ahmed Malik Waheed AlSaadawi

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Abstract

A field experiment was conducted during the autumn season of 2020 in one of the fields of Afak district - Al-Diwaniyah governorate / Iraq to investigate the effect of vermicompost, phosphorous nano-fertiliser and humic acid on the activity of inorganic pyrophosphatase enzyme and its thermodynamic parameters at the flowering and full maturity stages of maize. Randomized Complete Blocks Design was used at three replications. The experimental treatments were 14 treatments, including the control treatment and these treatments consisted of Vermicompost, Humic acid and Phosphorus and Nano-Fertiliser. The results showed that the V treatment had the highest means of inorganic pyrophosphatase enzyme activity (152.5 and 186.9 μg PO4-3-P g-1 soil 5h-1) and the lowest means of Ea (10.34 and 4.72 Kj mole-1) and Q10 (1.162-1.123 and 1.071-1.054) at the flowering and full maturity stages, respectively. The nP2 treatment achieved the highest means of inorganic pyrophosphatase enzyme activity (71.6 and 55.9 μg PO4-3- P g-1 soil 5h-1) at the flowering and full maturity stages, respectively, and the lowest means of Ea (3.54 Kj mole-1) and Q10 (1.053-1.041) at the full maturity stage only. Further, the H1 treatment gave the highest means of inorganic pyrophosphatase enzyme activity (64.5 and 75.9 μg P-nitrophenol g-1 soil 1h-1) and the lowest means of Ea (8.31 and 3.17 Kj mole-1) and Q10 (1.128-1.097 and 1.043-1.033) at flowering and full maturity stages, respectively. Also, the VnP1 and VH1 treatments gave the highest means of inorganic pyrophosphatase enzyme activity (159.0 and 222.3 μg PO4-3-P g-1 soil 5h-1) for both treatments at flowering and maturity stages, respectively, while the H1nP1 and Vnp1 treatments gave the lowest means of Ea (3.72 and 1.59 Kj mole-1) and Q10 (1.056-1.043 and 1.023-1.018) for both treatments at flowering and maturity stages, respectively.

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蚯蚓、磷纳米肥料和腐殖酸对无机焦磷酸酶活性及其热力学参数的影响

2020年秋季，在伊拉克Afak区Al-Diwaniyah省的一块田间进行了田间试验，研究了蚯蚓堆肥、纳米磷肥和腐植酸对玉米开花期和成熟期无机焦磷酸酶活性及其热力学参数的影响。三个重复采用随机完全块设计。试验处理为14个处理，其中对照处理为蚯蚓堆肥、腐植酸磷和纳米肥处理。结果表明，V处理在花期和成熟期无机焦磷酸酶活性平均值最高(152.5和186.9 μg PO4-3-P g-1土壤5h-1)， Ea平均值最低(10.34和4.72 Kj mol -1)， Q10平均值最低(1.162 ~ 1.123和1.071 ~ 1.054)。nP2处理在开花期和成熟期无机焦磷酸酶活性均值最高，分别为71.6和55.9 μg PO4-3- P g-1土壤5h-1, Ea均值和Q10均值最低，仅在成熟期为3.54 Kj mol -1, Q10均值为1.053 ~ 1.041。在开花期和成熟期，H1处理的无机焦磷酸酶活性平均值最高(64.5和75.9 μg - p -硝基酚g-1土壤1h-1)， Ea平均值最低(8.31和3.17 Kj mol -1)， Q10平均值最低(1.128 ~ 1.097和1.043 ~ 1.033)。VnP1和VH1处理在开花期和成熟期的无机焦磷酸酶活性平均值最高，分别为159.0和222.3 μg PO4-3-P g-1土壤5h-1，而H1nP1和VnP1处理在开花期和成熟期的Ea平均值最低，分别为3.72和1.59 Kj mol -1, Q10平均值最低，分别为1.056 ~ 1.043和1.023 ~ 1.018。

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.