Open Access Original Research Article

Comparative Effect of Decomposed Organic Matter on Seedling Growth of Pterocarpus erinaceus Poir. (Fabaceae)

A. O. Ogunsiji, T. O. Ibrahim

International Journal of Plant & Soil Science, Page 1-7
DOI: 10.9734/ijpss/2019/v30i530186

African kino tree (Pterocarpus erinaceus) plants are widely used species in afforestation programs but germination of seed and rate of seedling growth are major drawback. This study was therefore carried out to compare the effect of decomposed organic matter on the seedling growth rate of Pterocarpus erinaceus. The experiment was conducted in the screen house of Forestry Research Institute of Nigeria for a period of six months. Seedlings of P. erinaceus were subjected to four treatments. Decomposed kitchen waste (KW), decomposed fruit waste (FrW), decomposed fish waste (FW) and decomposed White leadtree (Leucaena leucocephala (LL)) leaves and control (CN). The experiment was laid out using a Completely Randomized Design. Each treatment was replicated seven times. Results showed that there was significant difference (P≤0.05) among the height of P. erinaceus seedlings subjected to different fertilizer applications. The mean seedlings height ranged from 11.55 to 18.34 cm with the highest mean height from seedlings subjected to LL while seedlings without fertilizer application had the least mean height. There was no significant difference (P≤0.05) among the collar diameter of P. erinaceus seedlings subjected to different fertilizer applications. The mean seedlings collar diameter ranged from 1.27 to 1.94 mm with the highest mean collar diameter from seedlings subjected to FW while seedlings without fertilizer application (CN) had the least mean collar diameter. Results also indicated no significant difference (P≤0.05) among the number of leaves of P. erinaceus seedlings subjected to different fertilizer applications. The mean seedlings number of leaves ranged from 12 to 16 with the highest mean number of leaves from seedlings subjected to LL, KW and FW while seedlings without fertilizer application had the least mean number of leaves. It is recommended that application of decomposed organic matter for proper growth of Pterocarpus erinaceus seedlings should be encouraged and properly disseminated to farmers.

Open Access Original Research Article

Effect of Crude Oil Concentrations on the Vascular Bundle Size of Two Maize Varieties

G. C. Ajuziogu, N. E. Abu, D. O. Aino, S. Ideyi, O. E. Udoh, E. O. Ojua

International Journal of Plant & Soil Science, Page 1-6
DOI: 10.9734/ijpss/2019/v30i530187

The reliance of humanity on fossil fuels particularly petroleum hydrocarbons has been on the increase and had led to increased pollution of agricultural lands. This study was aimed at investigating the effect of crude oil concentrations on the vascular bundle sizes of two Zea mays varieties – Oba Super Zaria (OSZM) and SMZ 37 Kaduna commonly cultivated in the South-eastern Nigeria. The study was conducted in the green house in the Department of Biological Sciences, Faculty of Natural Sciences, Kogi State University, Ayingba, Kogi State. The experiment was setup as a 2 × 4 factorial laid out in a Completely Randomized Design replicated three times with four treatment concentrations (0-control, 15, 30 and 45 ml) of petroleum crude and two maize varieties. Highly significant effects (P < 0.001) of the concentrations as well as the varieties were observed on the vascular bundles. The results showed a significant (P < 0.05) decrease in vascular bundle sizes with increasing concentration, with plants exposed to 45ml crude oil concentration having the smallest vascular bundle sizes. The vascular bundle sizes of Oba super Zaria decreased significantly (p < 0.05) with increasing concentrations of crude oil, while significant differences were also observed with the increasing concentrations in SMZ 37 Kaduna as compared to the control. Based on the results obtained from this investigation, OSZM appeared to be more susceptible to soils affected with crude oil.

Open Access Original Research Article

Evaluation of Seed Pre-sowing Treatment Effects on Seedling Emergence and Morphological Growth Parameters of Acacia auriculiformis (Australian Wattle) in Different Soil Types

M. O. Ojo, I. A. Kareem, W. A. Adeoti

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/ijpss/2019/v30i530188

The multiple products derivable from Acacia auriculiformis in terms of its soil nutrient augmentation by virtue of its nitrogen fixation capabilities are incontrovertible. This is in addition to being an ornamental, evergreen and shade providing tree, But its seed dormancy and dearth of knowledge regarding its growth rates in different soil types had hampered large scale production of its seedlings. Thus, an evaluation of the effects of some seed pre-sowing treatments on its seedling emergence (rates and percentages) and morphological growth parameters (external) in different soil types were investigated at the Screen House of the Department of Plant Science and Biotechnology, Adekunle Ajasin University, Akungba Akoko, Ondo State, Nigeria for a period of 8 weeks. The experimental design was a 4 × 3 factorial experiment in completely randomized design comprising 4 different soil types, 3 pre – sowing treatment methods (replicated thrice). Seedling emergence (rates and percentages) and external morphological growth indices (plant height, collar girth, number of leaves and leaf area) were investigated. Analysis of variance (ANOVA) test was employed in processing the data collected by employing relevant statistical package (SPSS 20.0). Results indicated that seeds pretreated with concentrated sulphuric acid and sowed in sandy loam (a3b1) emerged as the best treatment combination in terms of seedling emergence rate and percentage, morphological growth indices (significant at P<0.05) while the control (aobo: river sand with untreated seeds) had the lowest values.

Open Access Original Research Article

Effects of Environmental Factors on Tulip (Tulipa sp.) Cultivars Grown in West Bengal Plains

Srabani Das, Tapas Mandal, Safiuddin Ahmed Khan

International Journal of Plant & Soil Science, Page 1-6
DOI: 10.9734/ijpss/2019/v30i530189

To investigate the effects of environmental factors on tulip (Tulipa sp.) cultivars in the plains of West Bengal, a field experiment was conducted with ten tulip cultivars, considered as ten treatments (T) (T1=Apeldorn, T2=Maureen, T3=Holland Cich, T4=Day Dream, T5=Pussima Design, T6=Avignon, T7=Roi-du-midi, T8=Clear Water, T9=Colouch and T10=Jumbo Beauty), at Horticultural Research Station, Bidhan Chandra Krishi Viswavidyalaya, Mondouri, Nadia, West Bengal, India in two successive years of 2013-14 and 2014-15. Flower yield, flower length (cm), flower diameter (cm), plant height (cm) etc were observed and statistically analyzed and correlation was done between the morphological data and the environmental factors. The results showed that the short duration cultivars could be more suitable for cultivation under the short and mild winter conditions of the plains of West Bengal.

Open Access Original Research Article

Vegetative Growth Response of Eggplant (Solanum aethiopicum L.) to Combined Effects of Fertilizer Types and Irrigation Regimes Applied on Littoral Tertiary Soil in Côte d’Ivoire

Lekadou Tacra Thierry, Coffi Pierre-Marie Janvier, Yao Saraka Didier Martial, Ama Tamia Joséphine

International Journal of Plant & Soil Science, Page 1-11
DOI: 10.9734/ijpss/2019/v30i530190

The use of manures and irrigation systems are essential ways to improve the fertility of coastline poor soils in Côte d’Ivoire and to optimize crop yields at any time of the year. The present study aims to identify the best manures and irrigation systems suitable for the vegetative growth of eggplant on the tertiary poor soils of the coast in Côte d'Ivoire. For this purpose, combinations of fertilizer (urea and organic manure from chicken droppings) and irrigation techniques (manual watering and drip irrigation system) were tested in Fisher block design. So, vegetative growth variables of Eggplant, Aub 21N / 06, grown on tertiary soil at the Marc Delorme research station of the Centre National de Recherche Agronomique (CNRA) in Southern Côte d'Ivoire were evaluated. The results showed that the growth dynamics of collar circumference, height and leaf production of eggplant irrigated by drip system and fertilized with organic manure from chicken droppings was significantly higher. The eggplants that received a treatment composed by organic or chemical manure without irrigation and those without manure and irrigation expressed lower vegetative growth. The organic manure from chicken droppings associated with the drip irrigation regime had a significant beneficial effect on the average growth rates of the collar circumference (0.0035 cm.day-1), height (0.5669 cm.day-1) and leaf production (3.12 leaves.day-1) of eggplant. It appears that organic manure from chicken droppings associated with drip irrigation regime is an agricultural innovation to disseminate to market gardeners to cultivate the eggplant on littoral tertiary soil.