Effects of NPK Fertilizer on Tuber Yield, Starch Content and Dry Matter Accumulation of White Guinea Yam (<i>Dioscorea rotundata</i>) in a Forest Alfisol of South Western Nigeria

Kayode, G. O.

doi:10.1017/s0014479700013211

Cited by 21 publications

(14 citation statements)

References 9 publications

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“…A positive response to N P K fertilization was found in water yam ( D. alata ) (Igwilo 1989), but there was either a response to nitrogen (Lyonga 1984;Kayode 1985) or no response to fertilizer in white Guinea yam ( D. rotundata) (Igwilo 1989). In the few studies on nutrient deficiencies in D. rotundata, the omission of N, K, Ca or S led to poor growth in sand culture (Gaztambide and Cibes 1975).…”

Section: Introductionmentioning

confidence: 99%

Nutrient deficiency symptoms in yams (Dioscorea spp.)

2004

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Symptoms of nutritional deficiencies in D. alata and D. rotundata were observed when yam plants were grown in nutrient solutions from which any of the following had been omitted: N, P, K, Ca, Mg, Zn, Fe, B, Mn, Cu and Mo. The symptoms of deficiency of major elements were visible on plants of both species. The omission of Fe, B and Mo produced characteristic symptoms on the leaves of D. rotundata, but D. alata showed symptoms only in response to Fe deficiency. The omission of minor elements led to poor growth of the leaves, stems and roots. Nutrient deficiencies in yam plants could be diagnosed by visual symptoms in the field.

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Section: Introductionmentioning

confidence: 99%

Nutrient deficiency symptoms in yams (Dioscorea spp.)

2004

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“…Although the soils used for the study in 2005 and 2006 had adequate K for yam production, they were deficient in N, P, and soil organic matter (SOM) as required for good growth in yam. Yam will likely respond to fertilizer application on soil with less 0.1% N, less than 10 mg kg −1 available P, less than 0.15 cmol kg −1 K, and less than 1.7% SOM (Obigbesan, 1981;Kayode, 1985). The response of yam genotypes to fertilizer application in 2006 was clear evidence that the initial soils status could not supply adequate nutrient needed for good performance.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of White yam (Dioscorea rotundata) genotypes for arbuscular mycorrhizal colonization, leaf nutrient concentrations and tuber yield under NPK fertilizer application

Dare

Fagbola

Abaidoo

et al. 2014

Journal of Plant Nutrition

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2 Yield decline in yam may not only be due to soil nutrient depletion but also to the activity of soil microflora. Arbuscular mycorrhizal (AM) symbiosis helps in plant nutrition but may be affected by the application of fertilizer. The effects of nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates on the AM colonization, leaf nutrient concentrations, and tuber yields of eleven genotypes of Dioscorea rotundata were investigated at Ibadan, Nigeria. The soil was ferric luvisol. Eleven genotypes were selected from the previously conducted screening of 75 genotypes of D. rotundata for fertilizer response. Four application rates: 0, 200, 400, and 600 kg ha −1 of NPK 15-15-15 were applied in a split plot design with four replications. Fertilizer rate was the main plot and variety was the sub plot. Percentage AM colonization was significantly reduced at 600 kg ha −1 but not at lower rates when compared to zero rate and it was negatively correlated with leaf N, P, and zinc (Zn) concentrations. Leaf N concentrations were significantly increased at 200 kg ha −1 in five genotypes and at 600 kg ha −1 in two genotypes compared to zero application. Leaf P and K concentrations were decreased with the application of fertilizer in most of the genotypes. The NPK fertilizer of 15-15-15 at the rate of 200-400 kg ha −1 gave yield response in eight genotypes of D. rotundata, with minimal or no effect on their AM colonization when compared to zero application. Long term study on the effect of fertilizer application on AM symbiosis in yam is recommended. 658 Downloaded by [McMaster University] at 12:33 05 February 2015 Fertilizer Effect on Yam Yield and AM Colonization 659

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“…Oliveira et al (2005) verificaram redução da matéria seca e aumento nos teores de amido em função do emprego de esterco bovino e de galinha que seriam fontes de nitrogênio. O mesmo foi descrito por Kayode, (1985) que verificou a influência de fertilizantes químicos no teor de amido ao se aplicar formulado com NPK.…”

Section: Sweet Potato Roots Carbohydrates and Protein As Affected By unclassified

Carboidratos E Proteína Em Raízes De Batata-Doce Influenciadas Pelo Parcelamento Do Nitrogênio E Armazenamento Das Raízes

Corrêa¹,

Gouvêia²,

Evangelista³

et al. 2016

RRAT

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Effects of NPK Fertilizer on Tuber Yield, Starch Content and Dry Matter Accumulation of White Guinea Yam (Dioscorea rotundata) in a Forest Alfisol of South Western Nigeria

Cited by 21 publications

References 9 publications

Nutrient deficiency symptoms in yams (Dioscorea spp.)

Nutrient deficiency symptoms in yams (Dioscorea spp.)

Evaluation of White yam (Dioscorea rotundata) genotypes for arbuscular mycorrhizal colonization, leaf nutrient concentrations and tuber yield under NPK fertilizer application

Carboidratos E Proteína Em Raízes De Batata-Doce Influenciadas Pelo Parcelamento Do Nitrogênio E Armazenamento Das Raízes

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