Effects of site and insecticide application on growth and grain yield of local and improved cowpea varieties in south-western Nigeria

Adigbo, Sunday Ojo; Adigbo, Veronica Bola

doi:10.1080/03650340903225032

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…The superior grain yield obtained from Oloyin was also reported by [3]. The consistent higher grain yield of cowpea in alternate row additive in all the parameters could be attributed to interaction between cowpea and maize [15,16] and partly because of the population of cowpea (i.e.100% plant population in relation to the sole) in the mixture.…”

Section: Discussionsupporting

confidence: 65%

“…Most of the cowpea consumed in southern Nigeria (derived savannah) were produced and transported from the northern part (dry savannah). It has been reported that seven varieties of cowpea were evaluated in upland and inland valley ecologies during the rainy and dry seasons, respectively and the grain yields of Oloyin, and Sokoto local varieties were economically superior to the two improved varieties [3]. But the performances of these two varieties (Oloyin and Sokoto) have, however, not been investigated in intercrop which is the common practice by majority of the farmers in the derived savannah.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Spatial Arrangement on the Performance of Cowpea /Maize Intercrop in Derived Savannah of Nigeria

Adigbo

2013

AJEA

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Promising varieties of cowpea were found to be adaptable in the derived savannah; however, their performances in intercropping systems have not been investigated. Therefore, there is the need to investigate the effect of spatial arrangement of maize/cowpea on the performance of maize and cowpea. The experiment was a 2 x 5 factorial in randomized complete block design. A field experiment was conducted at Federal College of Education, Osiele, Abeokuta, Nigeria during the late cropping seasons of 2009 and 2010. The intercrop proportion mixture and population adopted in this study were additive and replacement series while Oloyin and Sokoto cowpea varieties were combined with TZESR-W maize variety as follows: Oloyin + maize in alternate row, Oloyin + maize in alternate row, Oloyin + maize in alternate stand, Oloyin + maize in strip cropping, Sokoto + maize in alternate row, Sokoto + maize in alternate row, Sokoto +

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Effect of Spatial Arrangement on the Performance of Cowpea /Maize Intercrop in Derived Savannah of Nigeria

Adigbo

2013

AJEA

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“…These include the Sokoto Basin, Chad Basin, Middle Niger Basin, Benue Basin, Southwestern Zone, South-Central Zone, Southeastern and the Basement Complex (World Bank, 2006). The estimated 3 million ha of inland valleys in Nigeria with residual moisture in the dry season, offers attractive opportunities for farmers to grow off-season, high-value crops (Adigbo and Adigbo, 2011; World Bank, 2001). The success recorded in the First National Fadama (inland valley) Project stimulated the interest of the World Bank, in partnership with the Global Environment Facility (GEF), to commit US$10 million grant to the Second National Fadama Project in 2006 to sustain it (World Bank, 2006).…”

Section: Introductionmentioning

confidence: 99%

Ratooned Lowland Nerica Rice Varieties as an Option for Triple Cropping in Inland Valleys of Derived Savannah in Nigeria

et al. 2012

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SUMMARYAlthough triple cropping in inland valleys of Nigeria is technically feasible, the third crop between the main crop and dry season non-rice crop has been considered not to be economically viable because of poor crop establishment due to soil inundation. The identification of an appropriate technology with low input, such as ratooning, would allow this niche to be utilized. Field experiments were conducted at the University of Agriculture, Abeokuta, Nigeria in 2007–2008 and 2008–2009 cropping seasons to evaluate the performance of the main and ratooned crops of lowland NERICA (New Rice for Africa) rice (Oryza sativa L.) varieties in a lowland rice–ratooned rice–fluted pumpkin (Telfairia occidentalis Hook F.) sequence. The experiment was laid out in a randomized complete block design with three replicates. The lowland rice varieties used were NERICA-L 19, NERICA-L 20, NERICA-L 22, NERICA-L 24, OFADA, NERICA-L 26, NERICA-L 41, NERICA-L 42, NERICA-L 44 and NERICA-L 47. The grain yield of the main rice crop ranged from 5.0 to 7.3 t ha−1 in 2007–2008 cropping season and from 4.1 to 9.1 t ha−1 in 2008–2009. The ratooned rice had a grain yield of 1.0–4.7 t ha−1 in 2007–2008 and 1.2–3.4 t ha−1 in 2008–2009. The total grain yield obtained in 2007–2008 from the main and ratooned rice crops in seven months was 6.7–11.6 t ha−1, while in 2008–2009 it was 5.3–2.6 t ha−1. The fresh leaf yield of fluted pumpkin ranged from 14.6 to 16.9 t ha−1 in 2007–2008 and from 18.3 to 19.8 t ha−1 in 2008–2009, similar to previously reported rainy season unfertilized yields. Thus, a ratooned rice crop appears to be a feasible technology capable of boosting rice production and consequently increasing the overall productivity of the inland valley in a rice–rice–vegetable cropping sequence.

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“…Therefore the objectives of the study are to (1) investigate the effects of preceding sprayed and unsprayed cowpea on the performance of the succeeding maize (2) select the best cowpea variety that will not only contribute soil N to the succeeding maize but also produce high harvestable grain yield and (3) to estimate the fertilizer equivalent value of the preceding cowpea on the maize grain yield. It is pertinent to mention here that this paper is not a duplicate of Adigbo and Adigbo (2011) published in Archives of Agronomy and Soil Science which focuses on the comparative performance of seven varieties of cowpea grown in two ecologies [upland ecology during late wet cropping season and wetland (inland valley) during the dry season but on residual moisture].…”

Section: Introductionmentioning

confidence: 98%

“…Grain yield of maize as influence by cowpea-maize and maize-maize sequence -Data were not collected Modified fromAdigbo and Adigbo, 2011 …”

mentioning

confidence: 99%

Effects of Preceding Cowpea on the Performance of Maize in Cowpea-Maize Sequential Cropping

Adigbo¹,

Fabunmi²,

Isadeha³

et al. 2013

Agricultura Tropica Et Subtropica

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Field experiment was conducted at the Federal cropping seasons to investigate the effects of cowpea varieties on succeeding of maize crop. The experiment was laid out in split-plot design and the treatment replicated three times. The main plot treatment was sprayed and unsprayed cowpea (Vigna unguculata L.) while variety constituted the subplot treatment (IT90K-76, IT90K-277-2, Drum, Olo, Oloyin, Mallam and Sokoto varieties). Maize variety cv TZESR-W was planted as the test crop in the early cropping season of 2005, 2006 and 2007 on each subplot of the preceding cowpea. The biomass of cowpea in the spray plots were higher than those of unsprayed at 8, 10 WAP in 2004. Olo variety had significantly lower biomass compared to others in 2004. The grain yield of cowpea from the sprayed plots was significantly higher than the unsprayed plots in all the years. IT90K-76 variety had the highest grain yield whereas Mallam and Drum had the lowest in all the years. Maize grain yields from the preceding cowpea plots were significantly higher than that of 0 N kg/ha. The fertilizer equivalent of the preceding varieties of cowpea ranges between 24 and 38 N kg/ha. Thus, preceding cowpea enhances the performance of succeeding maize.

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Effects of site and insecticide application on growth and grain yield of local and improved cowpea varieties in south-western Nigeria

Cited by 4 publications

References 8 publications

Effect of Spatial Arrangement on the Performance of Cowpea /Maize Intercrop in Derived Savannah of Nigeria

Effect of Spatial Arrangement on the Performance of Cowpea /Maize Intercrop in Derived Savannah of Nigeria

Ratooned Lowland Nerica Rice Varieties as an Option for Triple Cropping in Inland Valleys of Derived Savannah in Nigeria

Effects of Preceding Cowpea on the Performance of Maize in Cowpea-Maize Sequential Cropping

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