The Effect of Croton macrostachyus, Plectranthus barbatus Leaf Aqueous Extracts and Inorganic Fertilizers on Growth and Nutrients Concentration of Brassica oleracea L. in a Greenhouse at Nairobi

Simple item page
dc.contributor.authorOdhiambo, Kevin
dc.contributor.authorMurungi, Jane
dc.contributor.authorWanjau, Ruth
dc.contributor.authorNoah, Naumih
dc.date.accessioned2020-10-30T07:44:39Z
dc.date.available2020-10-30T07:44:39Z
dc.date.issued2019-01
dc.descriptionResearch Articleen_US
dc.description.abstractThe study was undertaken in Sustainable Development Initiatives Centre greenhouse at United States international university -Africa. The greenhouse experiment was laid out in potted containers in a randomised complete Block design (RCBD), with 3 replications. A total of four treatments composed of decomposed leaves extracts of Plectranthus barbatus (PB) and Croton macrostachyus (CM), inorganic fertilizer (IF) and Untreated soils (US) as control were used. The level of mineral and nutritive elements in leaf extracts and kales were determined by ICPE, β-carotene was determined by HPLC while Phosphorus Nitrogen were determined by UV-VIS. Data was analyzed using (ANOVA) and significant treatment means separated using the Turkey’s Honestly Significant Original Research Article Odhiambo et al.; AJAEES, 29(3): 1-10, 2019; Article no.AJAEES.46347 2 Difference Test. The highest mean levels macro nutrients in leaves (μg/g) K+; 228.31±1.76; Mg2+, 188.35 ± 1.24; PO43-, 16.21 ±3.36 and NO3 -, 95.35 ± 2.36 for croton macrostachyus and K+: 412.71 ± 2.55. Mg2+: 369.72± 3.25, PO43-: 29.59 ± 2.04 and NO3 -, 63.24± 1.47 for Plectranthus barbatus. Application of croton macrostachyus, and Plectranthus barbatus leaf water extracts resulted in increased mean shoot length, leaf length, and number of leaves of kales as compared to the control. The mean growth rate for kales (shoot length 8.69 ± 3.68-12.64cm, Mean leaf length 8.34 ± 4.17- 12.82 ± 5.53, Mean number of leaves 8.38 ± 2.94-12.53± 4.73 and Yield (t/ha) ranged from 2.44 - 5.89. Kales grown using leaf extracts had higher nutritive values as compared to the control. The mean nutritive values in kales were Iron (Fe) 3.87 – 5.24 mg/100g; Magnesium (Mg) 250.96-323.67 mg/100g; Sodium (Na) 216.21-320.81mg/100g; Phosphorus (P) 261.82-294.31 mg/100g; zinc (Zn) 1.17 -1.36 mg/100g; and β-carotene 4.73±0.15 - 3.38± 0.09 mg/100g.There was significant difference in nutritive values between leaf extracts and control. The growth of kales using leaf extracts of Croton macrostachyus responded better and gave a yield that was comparably higher to those of inorganic fertilizer and control. This study suggests that Croton macrostachyus and Plectranthus barbatus leaves may be potential source of plant nutrients for crop production and higher nutritive values.en_US
dc.identifier.citationOdhiambo, K., Murungi, J., Wanjau, R., & Naumih, N. (2019). The Effect of Croton macrostachyus, Plectranthus barbatus Leaf Aqueous Extracts and Inorganic Fertilizers on Growth and Nutrients Concentration of Brassica oleracea L. in a Greenhouse at Nairobi.en_US
dc.identifier.issn2320-7027
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/20752
dc.language.isoenen_US
dc.publisherAsian Journal of Agricultural Extension, Economics & Sociologyen_US
dc.subjectPlectranthus barbatusen_US
dc.subjectCroton macrostachyusen_US
dc.subjectSoil improvementen_US
dc.subjectGrowth of Brassica oleracea Len_US
dc.subjectImproved nutritive valuesen_US
dc.titleThe Effect of Croton macrostachyus, Plectranthus barbatus Leaf Aqueous Extracts and Inorganic Fertilizers on Growth and Nutrients Concentration of Brassica oleracea L. in a Greenhouse at Nairobien_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
The Effect of Croton macrostachyus, Plectranthus.....pdf
Size:
263.21 KB
Format:
Adobe Portable Document Format
Description:
Full Text Research Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
RP-Department of Chemistry