Irish potato is a tuberous staple food predominantly grown in Plateau State, a temperate climate. As a result of the high demand for Irish potato, there is a shortage in its supply in Nigeria. The shortage in its supply could be attributed to climate change and the fall in the production level. This study sought to establish the potential of a greenhouse (GH) for the production of Irish potato in the tropics. The experiments were carried out in the rainy and dry seasons of 2015/2016 and 2016/2017. Nicola, Diamant, Batita, New Seed and Okonkwo varieties of Irish potato were cultivated inside and outside the greenhouse. Thirty seedlings of each variety were planted using Completely Randomised Experimental Design. Greenhouse performance was evaluated in terms of air temperature, relative humidity, vapour pressure deficit, yield, stem diameter, stem height and dry matter content. The result of the analysis of variance revealed that the mean greenhouse and open-field temperature, relative humidity and vapour pressure deficit differed significantly at 0.01 during the rainy and dry season. The yield and growth data in and outside the greenhouse were significantly different at 0.01. Diamant, Batista and Okonkwo varieties are recommended for GH production.
Anthropogenic activities have altered land cover in Lake Baringo Catchment contributing to increased erosion and sediment transport into water bodies. The study aims at analyzing the spatial and temporal Land Use and Land Cover Changes (LULCC) changes from 1988 to 2018 and to identify the main driving forces. GIS and Remote Sensing techniques, interviews and field observations were used to analyze the changes and drivers of LULCC from 1988-2018. The satellite imagery was selected from SPOT Image for the years 1988, 1998, 2008 and 2018. Environment for Visualizing Images (ENVI 5.3) was used to perform image analysis and classification. The catchment was classified into six major LULC classes which are water bodies, settlement, rangeland, vegetation, farmland and bare land. The results revealed that, be
This study assessed the levels of air pollutants emitted outdoor of farm settlements (FS), the seasonal and temporal variations, and the relationship among the parameters monitored. Seven FS within Ogun State were investigated, with 211 sampling points established across the FS. The concentrations of VOCs, SO2, NO2, CO, O3, NH3, CO2, TSP, PM2.5 and PM10 were monitored in replicates using active potable samplers while bacteria and fungi were isolated using settle plate technique. Descriptive (means and standard deviation) and inferential statistical tools (Pearson correlation) were used to analyse the data. The mean ranges of VOCs, CO and CO2 (ppm); 20.8±10.53 – 48.67±19.05, 17.95±6.65 – 21.5±3.93, 3562.15±1200.85 – 4266±1176.85, and for bacteria and fungi (cfu/m3); 548.98±1.18 – 2255.01±1.27 and 525.68±1.15 – 1282.38±1.27 respectively were above the threshold limits. There were significant seasonal, spatial and temporal differences among observed means of VOCs, CO2 O3, TSP, PM2.5, and fungi. The bacteria and fungi count increased as TSP, PM2.5 and PM10 increased. The study established that levels of air pollutants are dependent on the type of farming practice.
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