Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria

Kingsley John 11 PAGES (5748 WORDS) Article
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A field experiment was conducted at the University of Calabar Teaching and Research Farm to
evaluate the effects of neem-based organic fertilizer, NPK and their combinations on soil chemical
properties and growth of okra (Abelmoschus esculentus) on a degraded Ultisol Calabar. The
experiment was laid out in a randomized complete block design with three replications comprising of
six treatments. The treatments were control (no amendment), sole NPK 20:10:10 fertilizer and
neem–based organic fertilizer applied at 120 kg N/ha, combinations of 60 kg N/ha NPK+ 60 kg N/ha
Neem, 90 kg N/ha NPK + 30 kg N/ha Neem and 30 kg N/ha NPK + 90 kg N/ha Neem. Results
showed that the soil chemical properties were influenced significantly (P<0.05) by the treatments
with the highest pH and exchangeable Ca values obtained in plots treated with half NPK and half
Neem while plots treated with sole Neem recorded highest values for CEC and base saturation.
Soils treated with 60 kg N/ha NPK+ 60 kg N/ha Neem gave a significant (P<0.05) increase in plant height, number of leaves and stem girth at 4, 6 and 8 weeks after planting. Based on the results
obtained, it can be inferred that the soils amended with 60 kg N/ha NPK + 60 kg N/ha Neem
significantly (P< 0.05) increased the growth of okra in the study area and is therefore recommended.

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APA

Kingsley, J (2019). Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria. Afribary.com: Retrieved March 26, 2019, from https://afribary.com/works/effects-of-neem-based-organic-fertilizer-npk-and-their-combinations-on-soil-properties-and-growth-of-okra-abelmoschus-esculentus-in-a-degraded-ultisol-of-calabar-nigeria

MLA 8th

John, Kingsley. "Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria" Afribary.com. Afribary.com, 28 Feb. 2019, https://afribary.com/works/effects-of-neem-based-organic-fertilizer-npk-and-their-combinations-on-soil-properties-and-growth-of-okra-abelmoschus-esculentus-in-a-degraded-ultisol-of-calabar-nigeria . Accessed 26 Mar. 2019.

MLA7

John, Kingsley. "Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria". Afribary.com, Afribary.com, 28 Feb. 2019. Web. 26 Mar. 2019. < https://afribary.com/works/effects-of-neem-based-organic-fertilizer-npk-and-their-combinations-on-soil-properties-and-growth-of-okra-abelmoschus-esculentus-in-a-degraded-ultisol-of-calabar-nigeria >.

Chicago

John, Kingsley. "Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria" Afribary.com (2019). Accessed March 26, 2019. https://afribary.com/works/effects-of-neem-based-organic-fertilizer-npk-and-their-combinations-on-soil-properties-and-growth-of-okra-abelmoschus-esculentus-in-a-degraded-ultisol-of-calabar-nigeria