IOSR-JAVS   Volume-13 ~ Issue-6 ~ JUNE 2020

ABSTRACT: Compost tea has been used in agronomy as a good source of organic substance and soil modifications that provides plants with mineral nutrients and other aids. An experiment was conducted at Teaching and Research Farm of Ramat polytechnic located in Maiduguri withthe aim to determine the effect of various concentrations of compost tea on morpho-physiological development and qualities of okra. Five concentrations of compost tea were used at 0, 30, 60, 90 and 120ml/L to the foliar of the cultivated okra crop. Plant growth and yield parameters were measure at interval of one using simple tools and manual counting whereby recording data on log books, while the physiological characteristics such as Leaf chlorophyll were measured by SPAD meter, the total soluble solid content of pod was studied using a hand refractometer, measurement of Stomatal conductance was determined......

Keywords: Okra, compost tea, growth, yield, quality

[1]. Adetuyi, F.O; Osagie, A.U & Adekunle, A.T (2011). Nutrient, Antinutrents, Mineral and Zinc Bioavailability of okra, Abelmoschus esculentus (L.) moench. American journal of food and nutrition, 12(4): 65-72.
[2]. Adewole, M.B & Illesanmi, A.O (2011) Effect of compost on nutritional quality of okra (Abelmoschus esculentus L. moench). Journal of soil science and plant nutritional 11 (3): 45-55.
[3]. Ahmad, R., S.M. Shehzad, A. Khalid, M. Arshad and M.H. Mahmood, 2008. Growth and yield response of wheat and maize to nitrogen and Ltryptophan enriched compost. Pak. J. Bot., 39(2): 541-549.
[4]. Akanbi, W.B., Togun, A.O., Adediran, J.A Olaniyan A.B., Olabode., O.S & Olaniyi, J.O (2004) Effect of split-application of organic mineral fertilizer on okra growth, nutrient uptake and fruit yield. Nigerian journal of horticultural science, 9: 102-109.
[5]. Akanni, D.I & Ojenyi, S.O (2008) Residential Effect of Goat and poultry manure in soil properties, nutrient content and yield of okra in south west Nigeria. Research journal of Agronomy 2 (2): 44-47..

ABSTRACT: Shrimp production for the year 2025 is expected to be 7,760,000 tons worldwide, which consumed around 10.48 million tons of feed. In Latin America they will be used around of 806,288 tons mainly distributed in three main producers in the region such as Ecuador (543,750 tons), Mexico (187,538 tons) and Brazil (75,000 ton). The shrimp industry is one of the dominant consumers of fishmeal in the aquaculture sector, and to meet the demand of a growing industry given a limited supply of marine ingredients, food manufacturers have decreased the inclusion of fishmeal fish in most commercial diets. It has been found that almost 20% of the overall production of fish meal is supplied through fishery by-products and that the inclusion of at least 10% of a high quality marine origin ingredient is required in the diet. The use of plant no-conventional ingredients has shown that inclusion in shrimp diets above....

Keywords: Fish meal; shrimp; aquaculture; alternative sources.

[1] TaconAG. Trends in global aquaculture and aquafeed production: 2000–2017, Reviews in Fisheries Science & Aquaculture.2019, DOI: 10.1080/23308249.2019.1649634
[2] MalcorpsW, Palmer RD. El enigma de la sostenibilidad de los alimentos para camarones: sustitución de harina de pescado. Global Aquaculture Advocate. 2019. Monday, 8 April 2019. USA.
[3] Olsen RL, Hasan MR. A limited supply of fishmeal: Impact on future increases in global aquaculture production. Trends in Food Science & Technology.2012; 27(2): 120-128.
[4] Hardy RW, Tacon AG. Fish meal: historical uses, production trends and future outlook for sustainable supplies. Responsible Marine Aquaculture.2002; 311–325.
[5] Tocher DR, Betancor MB, Sprague M, Olsen RE, Napier JA.Omega-3 long-chain polyunsaturated fatty Acids, EPA and DHA: bridging the gap between supply and demand. Nutrients. 2019; 11: 89.

ABSTRACT: Over time, studies have shown that the physical and chemical composition of any water body shows its integrity index. The present study investigated the limnological integrity of Aragba River for eight (8) weeks at three designated sites using standard techniques. Physical variables were air (21-34°C) and water(20.5-31°C) temperatures, conductivity(23.5-35.2μS/cm), Total Dissolved solids(11-20mg/L) and chemical; Alkalinity(10-20 mg/CaCO3), Acidity(146-556 mg/CaCO3), Chloride(11.5-32mg/L), CO2(2.05-3.89mg/L), Phosphate(0.01-0.5mg/L), Potassium (111-534mg/L) characteristics measured a good quality river. These attributes fluctuated daily within and across the stations within acceptable configurations. Changes occurred in most chemical than physical variables; pH tilted towards acidity; water temperature associated with other variables. The limnological integrity of Iyikpesu River is still intact, despite the enormous human activities and its use for economic development is therefore highly recommended rather than use for silages.

Keywords: Limnology, Water quality, Iyikpesu River, Aragba, Nigeria

[1]. Abolude S D, Chia A M, Yahaya A S, Okafor D C. 2012 Phytoplankton Diversity and Abundance as a Function of Water Quality for Fish Production: A Case Study of Two Manmade Reservoirs in Zaria, Nigeria. Tropical Freshwater Biology21(2): 41-58
[2]. Abujam S K S, Dakua S, Bakalial B, Saikia A K, Biswas S P, Choudhury P. 2011. Diversity of Plankton in Maijan Beel, Upper Assam. Asian J. Exp. Biol. Sci.2(4):562-568.
[3]. Ait-Kadi, M., 2016. Water for development for water: realising the sustainable Development Goals (SDGs) Vision. AquaticProcedia6:106-110.
[4]. Akpan E R. 2006. Nutrient–Phytoplankton Relationships in Cross River Estuary, Nigeria. Journal of Chemical Society of Nigeria, 31(1-2): 102-108.
[5]. Amitaye A N. 2014. Quality Assessment of Ethiope River Course from Obiaruku, Delta State, Using Physicochemical Parameters as Indicators. Journal of Environmental Management and Safety. 5(2):135-144.

ABSTRACT: A field trial was conducted at Awka to evaluate the effect of manual and chemical weed control methods on Mungbean (Vigna radiata L.) growth and yield parameters. The study was laid out in a randomized complete block design, replicated five times. The four treatments were hoe weeding at 4 and 8 weeks after sowing (WAS), application of atrazine at the rate of 1.5kg a.i/ha at 4 and 8WAS, hoe weeding at 4WAS followed by application of atrazine at the rate of 1.5kg a.i/ha at 5WAS, and weedy check. The various treatments had no significant effect on mungbean growth measured parameters except on the number of branches where hoe weeding at 4WAS followed by application of atrazine at 5WAS had the highest number of branches at 6WAS (35.1). At 8WAS, application of atrazine at 4 and 8WAS had the least broad leaf weeds density (1.2) which showed that it is very effective.......

Key words: Mungbean, Atrazine, Weed, manual, chemical control

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[2]. Adigun, J.A. and Lagoke, S.T.O. (2003). Weed control in transplanted rain and irrigated tomatoes in the Nigerian savanna. Nigerian Journal of Weed Science, 16: 23-29.
[3]. Agugo, B.A.C. (2003). Introducing mungbean into the Southeastern Nigeria's humid forest: overview of potentials.in the proceedings of 37th Annual conference of the Agricultural society of Nigeria held at Calabar, pp: 301-309.
[4]. Agugo, U.A. and Onimawo, I.A. (2008). Effect of heat treatment on the nutritional value of Mungbean. M.Sc. project, Department of Nutrition and Dietetic, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria, pp: 32-35
[5]. Ali, M. and Kumar, S. (2007). Good options for rainfed area and priority inputs in pulse production. The Hindu Survey of Indian Agriculture, pp: 39-41.