Open Access Original Research Article

Growth and Yield of Maize as Influenced by Using Lumax 537.5 SE for Weed Control in the Transitional Agro-ecological Zone of Ghana

V. Y. Anorvey, E. K. Asiedu, H. K. Dapaah

International Journal of Plant & Soil Science, Page 1-11
DOI: 10.9734/IJPSS/2018/38795

Two field studies were conducted at the Multipurpose Crop Nursery research field of the University of Education, Winneba, Mampong-Ashanti in the Forest-Savannatransitionzone of Ghana from September-December, 2009 and April-July, 2010, respectively to determine the effects of various rates of Lumax 537.5 SE herbicide on maize growth and yield. The experimental design used was a randomized complete block with four replicates. The treatments were Lumax 537.5 SE at rates 2, 4, 6, and 8l/ha and Hoe-weeded with Unweeded treatment as control. The maize cultivar, Akposoe was used. Differences in percentage of crop establishment among treatments were not significant in both the years. However, 4l, 6l, 8l Lumax/ha and Hoe-weeded treatments produced similarly taller maize plants from 6  to 8 weeks after planting (WAP) with greater leaf area index at 6 WAP and shoot dry matter at 6 WAP and harvest than 2l Lumax/ha and Unweeded control in both years. Differences in 100-seed weight and grain yield of maize among Hoe-weeded and Lumax at 4l/ha, 6l/ha and 8l/ha treatments were not significant during both cropping seasons. The results clearly indicated that the use of 4l Lumax 537.5 SE/ha produced similar maize growth and yields as the higher use rates of 6l Lumax/ha and 8l Lumax/ha and therefore can be recommended for adoption across the transitional agro-ecological zone of Ghana.

Open Access Original Research Article

Study of Microorganisms Associated with the Chemical Compounds in a Tropical Soil

M. Palma-Jiménez, M. Blanco-Meneses, J. R. Vega-Baudrit

International Journal of Plant & Soil Science, Page 1-13
DOI: 10.9734/IJPSS/2018/39052

Soil is the most complex of all microbial habitats. Tropical soils have high levels of biodiversity and microorganisms that display fascinating mechanisms for interaction and biotransformation, thus regulating the mobility of chemical compounds in the environment. This paper will provide an understanding the relationship between chemical compounds present in a tropical soil and the microorganisms isolated from different sampling points in the biologically diverse area of Lepanto, Costa Rica. Microbiological (bacterium and fungi culture media), biochemical (oxidation-fermentation and catalase test), molecular (ITS and 16S gene fragments), thermal (TGA), and spectroscopic (FTIR, SEM-X-ray) techniques were used for this purpose. Four bacterial species, Klebsiella quasipneumoniaeKlebsiella pneumoniaeMicromonospora sp. and Paenibacillus sp., and three fungal species, Penicillium rubensPenicillium stekii and Meyerozyma guilliermondii, were identified. The soil chemical composition allowed the identified microorganisms to be associated with fatty acid groups, humic substances, aromatic compounds, conjugated ketones and carboxylic groups. In addition, metals present in the soil (Al, Mg, C, O, Si and Fe) were correlated with the activity of these microorganisms. The present study highlights the potential utility of the combined use of inference tools to identify ecologically meaningful microorganismal associations in environmental samples and the chemical compounds in a tropical soil.

Open Access Original Research Article

Valuable Tropical Flora of Anambra State, Nigeria-Amawbia Watershed in Focus!

G. Ukpaka Chukwujekwu; C. Nnabude, Peter, J. Anyaegbunam Ngozi

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/IJPSS/2018/36870

Well structured questionnaires and rating schedule were utilized to establish the economic relevance of each member of each species for each growth form. Available growth forms have very low economic relevance except probably the ones man knowingly planted for their high Economic values. Species with a rating higher than 6.5 had high relevance; those having less than 6.5 rating had low Economic relevance while those having a 6.5 rating had average relevance. Generally, the tree, shrub and climber species recorded higher relevance than the grasses and forbs. Some of the more important Economic relevance include: edible food, export commodity, cash crop, industrial raw material, medicinal plants and erosion control/soil protection. Replacements of unwanted species with the more economically relevant ones are of priority!

Open Access Original Research Article

Influence of Incorporated Legumes, NPK 20-10-10 and Their Combination on Yield and Yield Attributes of Pearl Millet (Pennisetum glaucum L.)

A. K. Ibrahim, N. Voncir, A. Usman

International Journal of Plant & Soil Science, Page 1-7
DOI: 10.9734/IJPSS/2018/38185

Field experiments were conducted from 2015 to 2016 during wet seasons at the Teaching and Research of the Leventist Farm, Tumu, Akko local Government area, Gombe State, to evaluate the effects of incorporated legumes, NPK 20-10-10 and their Combinations on yield and yield attributes of pearl millet (Pennisetum glaucum (L.)). The treatments comprised of Centro alone (T1); Centro + N30 P15 K 15 kg ha-1 (T2); Lablab alone (T3); Lablab + N30 P15 K 15 kg ha-1 (T4); Mucuna alone (T5); Mucuna + N30 P15 K 15 kg ha-1 (T6); Sesbania alone (T7); Sesbania + N30 P15 K 15 kg ha-1 (T8); recommended N60 P30 K 30 kg ha-1 fertilizer (T9) and Control (T10) were tested in randomized complete block design (RCBD) and replicated three times. It can be seen that among the various treatments, the incorporation of Lablab + N30 P15 K 15 kg ha-1 (T4) is resulted in significantly higher yield attributes (panicle length 24.99 cm, panicle girth 3.20 cm, 100 grains weight ), grain yield (3631 kg ha-1) and stover yield (7492 kg ha-1). The findings of the study revealed that Lablab + N30 P15 K 15 kg ha-1 showed a better performance of pearl millet in terms of yielding, and yielding attributes.

Open Access Original Research Article

Effect of Phospho Compost and Nitrophospho-Sulpho Compost on Soil Chemical and Biological Properties under Soybean in Vertisols

Ashay D Souza, P. W. Deshmukh, S. M. Bhoyar, R. Rakesh

International Journal of Plant & Soil Science, Page 1-7
DOI: 10.9734/IJPSS/2018/38648

The present investigation entitled “Effect of Phospho compost and Nitrophospho-Sulpho compost on soil chemical and biological properties under soybean in Vertisols" was conducted at Research farm, Dr. PDKV, Akola during Kharif 2016. The experiment was laid in Randomised Complete Block Design with eight treatments and three replications. The treatments used were control,100% Recommended Dose of fertilizers (RDF) [30:75:30 NPK/ha] in form of Diammonium Phosphate and Muriate of Potash, 50% P through Phospho Compost +Remaining RDF through mineral Fertilizers, 25% P through Phospho Compost +Remaining RDF through mineral fertilizers, 50% P through Nitro PhosphoSulpho compost +Remaining RDF through mineral Fertilizers, 25% P through Nitro PhosphoSulpho compost +Remaining RDF through mineral Fertilizers,100% P through Phospho Compost, 100% P through Nitro PhosphoSulpho compost. An organic source like Phospho compost and Nitrophospho- Sulpho compost were applied. The result revealed available nutrient status of Nitrogen (253.60 Kg ha-1) Sulphur (15.73 mg Kg-1) were recorded the highest values significantly under 100% application of P through Nitrophospho-Sulpho compost, numerically higher  available P (21.77 Kg ha-1) with 25% P through Nitrophospho-Sulpho compost + remaining RDF through mineral fertilizers and available K (407.29 Kg ha-1) was recorded with 100% RDF. In case of biological properties Soil Microbial Biomass Carbon (227.85 and 230.60 mg Kg-1), Soil Microbial Biomass Nitrogen (43.90 and 47.20 mg kg-1) at flowering and pod formation stage of soybean 100% P through NPS recorded highest values respectively. Hence, the combination of organics and inorganics showed better soil available nutrients and biological properties.