DOI: 10.7910/dvn/n3bzm3
title: Data for The effect of Hydrocarbon Pollution on cocoyam

description: Hydrocarbon pollution on Colocasia esculenta
Data for The effect of Hydrocarbon Pollution on cocoyam 
(Colocasia esculenta)
Description
The experiment investigates the effect(s) of recurring oil spills on cocoyam. The experiment evaluates three consecutive generations of cocoyams to determine the effects of recurring oil spills in their fourth month, on their petiole length, leaf blade length, and chlorophyll concentration in leaves on maturity at 8-9 months. The experiment evaluates the impact of poultry manure on crops grown in polluted fields. 
More information on the experiments available at “The effect of Hydrocarbon Pollution on Niger Delta Root Crops: A Case Study of Cocoyam [Colocasia esculenta]” International Journal of Innovative Technology and Exploring Engineering, Vol. 12 (11) October 2023, Retrieval Number: 100.1/ijitee.L974111121223, 
DOI: 10.35940/ijitee.L97419733.10121123. Journal Website: www.ijitee.org

The experiment sought to determine the effect(s) of recurring oil spills on cocoyam. The experiment evaluates oil spills on cocoyams in their fourth month. The experiment evaluates the impact of poultry manure on polluted crop fields. A key assumption in this experiment is zero dissipation rates for all additives. This three-year study examines changes in petiole length, leaf blade length, and chlorophyll concentration in response to recurring liquid hydrocarbon contamination. 
Subject:
Agriculture
Keywords:
Cocoyams, Hydrocarbon pollution, Impact of repeated spills on cocoyam plants, Effects of poultry manure on cocoyams
Preamble
Cocoyam is an important food crop in the Niger Delta. It is important for food security in Nigeria's Niger Delta region. Unfortunately, the Niger Delta is prone to periodic, repeating crude oil contamination as a result of continuous crude oil extraction and transportation activities. This three-year study looks at how petiole length, leaf blade length, and chlorophyll concentration alter in response to recurring liquid hydrocarbon contamination. The experiment in this study was designed to imitate seasonal, recurring spills and lasted three years. This study's experiment lasted three years and was designed to replicate seasonal, reoccurring spills. This depicts three generations of crops. Cocoyam is traditionally grown in March and harvested in October/November in the Niger Delta. The parent stock (generation 0) used in this investigation was obtained from the Emede market in Delta State. This investigation's parent stock (generation 0) was obtained from the Emede market in Delta State, Nigeria. All subsequent cocoyam used for this investigation was from this original stock.
The experiments explored the changes in petiole length, leaf blade, and chlorophyll contents of cocoyams grown in eight grow bags under four soil conditions. Soil conditions are:
1. Cocoyam cultivation in pristine soil 
2. Cocoyam cultivation in pristine soil enriched with poultry manure
3. The cultivation of cocoyam in pristine soil, with a yearly addition of 4 L/cubic metre of liquid hydrocarbon. This replicates periodic oil spills in June each year with 2 replicates at a 3-4 day interval (Table 1).
4. And finally, the cultivation of cocoyam in pristine soil with the addition of liquid hydrocarbons and organic poultry manure.
Table I: The days for the start of crude oil inoculation each year
Year Crude Oil Inoculation Dates 
2019 June 10,14,17 
2020 June 17,21,24 
2021 June 19,23,26 

The cocoyams were grown in 10-gallon grow bags. The experiment utilized 8 grow bags, each with a volumetric capacity of 10 gallons (approximately 37.85 liters), to cultivate cocoyams over three generations (2019–2021). These 8 grow bags were labeled "B1"-"GB8.” Arbitrarily, GB 5 and 6 received three liquid hydrocarbon inoculations of 4 liters per cubic meter each year in June, at the commencement of the second trimester of their 9-month growth cycle. Grow bags GB 7 and 8 received three liquid hydrocarbon and poultry manure inoculations as organic fertilizer. Bags GB 3 and 4 contained pristine soil and poultry manure, without hydrocarbons. The control bags, GB 1-2, were maintained with pristine soil exclusively, with no additives. All grow bags received identical hours of sunlight and volumes of distilled water. Each succeeding generation of cocoyam crop was propagated from the corms of the preceding generation, offering an invaluable opportunity to observe any traits associated with the growth conditions. The study documented the observable changes in successive generations of the crop for each soil condition. Observed changes in each generation were recorded. At maturity, 4 leaves are randomly picked for each soil condition, and the petiole length, leaf blade, and chlorophyll content are measured. The MS Excel spreadsheet (2019-2021 3Gens cocoyams.xls) presents the average values of the measurements.