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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Remediation of mild crude oil polluted fresh water wet land with organic and inorganic fertilizer

100%
Chizoruo I. F., Onyekachi I. B., Chinaka I. C. B., Chinyelue E. M.
International Letters of Natural Sciences
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2016
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tom 54
Wetland pollution due to inputs from crude oil is one of the most prevalent environmental problems facing the aquatic ecosystem in the world. The present study was intended to investigate the effectiveness of combination of cow lumen and NPK fertilizer in stimulating the degradation of crude oil polluted fresh water wet land. Soil samples were collected from unpolluted plots, crude oil polluted plots and crude oil polluted plots that were treated with the remediating agents. After fifteen days and sixty days of remediation, the soil samples were analysed for pH, electrical conductivity (E.C), phosphate, PO3- 4, phosphorous, P, % organic carbon, % total nitrogen N, carbon/nitrogen ratio and total petroleum hydrocarbon, TPH. The result indicates that combination of the inorganic and organic manure was more efficient in stimulating the degradation of the crude oil than the use of either the cow lumen or NPK fertilizer alone. The physiochemical properties of the soil in all the treated plots were observed to have been improved when compared with that of the untreated plots.
2

Growth response of North African caftish fry to organic and inorganic fertilizers

72%
Anetekhai M. A., Owodeinde F. G., Denloye A. A., Akintola S. L., Aderinola O. J., Agboola J. I.
Acta Ichthyologica et Piscatoria
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2005
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tom 35
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nr 1
Background. Fertilizer application is considered a viable low-cost method of sustainable aquaculture production. This study was carried out to investigate the growth response of north African catfish, Clarias gariepinus (Burchell, 1822), fry to inorganic- (NPK) and organic (cow dung and poultry dropping) fertilizers. Materials and Methods. Catfish fry (0.05–0.06 g) were transferred for six weeks into a 0.13-m deep, culture units of the surface area of 0.135 m2. Each culture unit was treated with either cow dung +NPK (T1), poultry dropping (T2), cow dung + poultry dropping (T3), control with no fertilizer (T4), NPK + poultry dropping (T5), cow dung (T6), NPK + cow dung + poultry dropping (T7), and NPK (T8). Results. Fertilizer type was found to influence the quality and quantity of plankton, which in turn determined the growth and well-being of catfish fry. The best weight increase was recorded in T1 (1.37 ± 1.01 g) followed by T2 (0.49 ± 0.31 g), and then T7 (0.40 ± 0.23 g). The survival rate in T1 (100%) and T2 (60%) were the highest relative to the control (T4) (87%). Dissolved oxygen, pH, and temperature of culture water were variously affected by the treatments. Conclusion. The results indicate that mixture of NPK and either cow dung or poultry droppings would adequately cater for the growth needs of C. gariepinus fry before feeding on compounded diet.
3
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Effects of inorganic and foliar fertilizers on antioxidant capacity and flower yield of saffron (Crocus sativus L.)

58%
Abou Obaid Y. A., Traykov Zehirov G., Krasimirova Again-Stoyanova N., Ivanova Petrova M., Haddad R. H., Karam F. S., Shaban N. T., Dimova Vassilevska-Ivanova R.
Acta Agrobotanica
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2022
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tom 75
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nr 1
4
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Effect of foliar application of Banana pseudostem Sap on yield of Cowpea (Vigna unguiculata L. Walp.)

58%
Fernando W. S. L. V., Karunarathnaa B.
International Letters of Natural Sciences
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2020
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tom 79
Improved soil fertility is a requirement for enhanced crop production. Combination of inorganic and organic fertilizers improve crop productivity while reduce environmental degradation. An experiment was carried out at Eastern University, Sri Lanka to study the effect of Foliar Application of Banana Pseudostem Sap on Yield of Cowpea (Vigna unguiculata L. Walp.) in sandy regosol. The experiment was laid out in Randomized Complete Block Design having five treatments viz; recommended inorganic fertilizer N, P, K as basal and N as topdressing (T1), N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% , 3%, 5% and 7% banana pseudostem sap solution (T2-T5) at 3rd, 5th, 7th and 9th week after planting. The results revealed that significant difference (P<0.05) were noted on number of pods per plant at 1st and 2nd picking. Higher number of pods per plant, maximum pod length and girth were in T2 while low in T1. Sun dried weights of pods and number of seeds per pod were significantly (P<0.05) varied at each picking. Further, cowpea yield at each picking were higher in T2 compared to tested treatments. The present study suggested that, among the tested treatments N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% Pseudostem sap solution at 3rd, 5th, 7th and 9th WAP would be the most suitable for cowpea production in sandy regosol.
5
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Influence of varying rates of fertilizers on the performance of cacao (Theobroma cacao) seedlings in the nursery

58%
Famuwagun I. B., Oladitan T. O.
International Letters of Natural Sciences
|
2016
|
tom 58
Effects of application of poultry manure, organo-mineral fertilizer, NPK soil or foliar applied at varying rates on cacao seedlings were studied in the nursery between January-May 2011 and December to April, 2012. Poultry manure at 40, 50 and 60g/plant significantly influenced cacao seedlings height and number of leaves over other treatments. The effect of organo-mineral fertilizer application at 50 and 60g per plant on the number of leaves was also significantly better than NPK soil or foliar applied, starting from 12 weeks after treatment application. The stem girth development under poultry manure at 50 and 60g per plant application had the best performance followed by poultry manure at 40g per plant. There were no significant differences in almost all the treatments at 5 weeks after sowing on seedlings stem girth. NPK has the longest tap root length while poultry manure had the largest average number of lateral roots followed by organo-mineral. The results thereby indicated that the use of poultry manure at 40 to 50g per plant and organomineral fertilizer as sources of nutrients had significant effects on cacao seedling quality.
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