Moisture and Planting Density Interactions Affect Productivity in Cowpea (Vigna unguiculata)

Lemma, G; Worku, Walelign; Woldemichael, Abraham

doi:10.3923/ja.2009.117.123

Cited by 20 publications

(20 citation statements)

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“…Santos (2000) and Muhammad et al (2007a) concluded the inverse relationship between organic matter content and mineralization. Number of microorganisms at the soil surface decreased the mineralization rate of the residues on one hand and increases the salt absorbance by the extract on the other hand (Muhammad et al 2007b, Lemma et al 2009). While the increase of the EC in the control may be related to the solubility of salts, which may be absorbed in other treatments in their organic matter of extract.…”

Section: Resultsmentioning

confidence: 99%

Effects of plant extracts on growth, yield and protein content of cowpea (Vigna unguiculata (L.) Walp.)

et al. 2013

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Aqueous plant extracts of Malva parviflora L. and Artemisia ludia L. were tested in the field on cowpea (Vigna unguiculata (L.) Walp.) plants. The extracts were added alone and in combination. The treatments were applied just one day before irrigation. Data obtained revealed that the growth, yield and protein content of cowpea were stimulated by 10% aqueous extract of M. parviflora and the mixture of 10% Malva with 20% Artemisia. The data also showed that the soil fertility was improved.

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Section: Resultsmentioning

confidence: 99%

Effects of plant extracts on growth, yield and protein content of cowpea (Vigna unguiculata (L.) Walp.)

et al. 2013

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“…Improved weed control and optimising planting density enhances efficient use of plant resources (nutrients, light and water) in maize bean intercrops, increasing the forage and grain yields. Use of optimal planting density increases crop yield, however, moisture stress hinder improved biomass yields (Lemma, Worku, & Woldemichael, 2009). Research has shown that supplementary irrigation under drought conditions improved crop water use efficiency and optimized growth and yield in sorghum (Ibrahim et al, 2013).Total above ground biomass of lucerne (Medicago sativa L.) increased to optimum 2292 g m −2 under narrow spacing (15 cm between plants) but reduced to 1670 g m −2 under wide spacing (30 cm between plants) (Juan et al, 2013).…”

Section: )mentioning

confidence: 99%

“…Also, Lemma et al (2009) conducted a study on planting density and contrasting moisture regimes on cowpeas and found that both grain and total biomass yield ha -1 increased with increasing planting density under wet regime while an increase in planting density decreased grain yield and total biomass ha -1 under the water limited regime. In this study season two grain yield and maize biomass decreased probably due to drought conditions.…”

Section: Soil Moisture Contentmentioning

confidence: 99%

The Effects of Maize Planting Density and Weeding Regimes on Light and Water Use

Kivuva¹,

Mburu²,

Maina³

et al. 2014

JAS

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Light and water are among essential resources required for production of photosynthates in plants. A study on the effects of weeding regimes and maize planting density on light and water use was conducted during the 2001/2 short and 2002 long rain seasons at Muguga in -the central highlands of Kenya. Weeding regimes were: weed free (W1), weedy (W2), herbicide (W3) and hand weeding twice (W4). Maize planting densities were 9 (D1) and 18 plants m -2 (D2) intercropped with Phaseolus vulgaris (beans). The experiment was laid as randomized complete block design replicated four times and repeated twice. All plots were thinned to 4 plants m -2 at tasseling stage (96 DAE) and thinnings quantified as forage. Soil moisture content (SMC), photosynthetically active radiation (PAR) interception, evapo-transpiration (ET crop), water use efficiency (WUE), and harvest index (HI), were determined. Percent PAR was higher in D2 than in D1 before thinning but higher in D1 than in D2 after thinning in both seasons. PAR interception was highest in W2 but similar in W1, W3 and W4 in both seasons. SMC was significantly lower in W2 but similar in W1, W3 and W4. D2 had lower SMC than D1 in season two. Weeding regime significantly influenced ET crop, while planting density and weeding regime significantly influenced WUE and HI. D2 maximizes water and light use for forage production but results to increased intra-specific plant competition for water and light severely before thinning (96 DAE) that reduce grain yield in dual purpose maize, relative to D1.

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“…Among legumes grain, cowpea (Vigna unguiculata (L.) Walp.) is the most widely cultivated and consumed especially in Asia, Tropical Africa, South America, parts of Southern Europe and the United States (Singh et al, 1997;Lemma et al, 2009;Patil et al, 2013). However, Africa is the main area of production, where the crop is very important for low input agriculture, which characterizes most countries of the continent (Pasquet, 1998;Ba et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Cowpea (Vigna unguiculata (L.)Walp., Fabaceae) landrace (local farmers varieties) diversity and ethnobotany in Southwestern and Eastern parts of Ethiopia

Alemu¹,

Alemu²,

Asfaw³

et al. 2019

Afr. J. Agric. Res.

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The present research was carried out to identify and document the landrace diversity and ethnobotanical uses of cowpea (Vigna unguiculata (L.) Walp) (Fabaceae) in Southwestern and Eastern Ethiopia. Data were collected through field observations, semi-structured interviews, guided field walk with cowpea farmers and users, and market surveys. Descriptive statistics, preference ranking and informant consensus were employed in the analysis. Forty-four cowpea accessions were collected from geographical locations ranging from 428-2128 m.a.s.l. and 05° 17' 06.6" to 09°33' 58.5'' N and 34° 15' 54.5'' to 42° 26' 30.4'' E. The landraces had diverse seed sizes, colours, growth habits and germination potentials. Local variety 'Rapo' (Anywaa language) of V. unguiculata subsp. dekindtiana was found in Gambella Region; 'Atera babile' (Oromo language) of V. unguiculata subsp. cylindrica and subsp. unguiculata were found in all regions studied. Farmers grew cowpea for the purposes of human food, livestock Feed, improving soil fertility and medicine. The majority of farmers (63.33%) preferred the widely known 'Atera babile' which belongs to subsp. unguiculata because of its spreading nature, ability to produce more biomass than other varieties, effectiveness for improving soil fertility and ability to supersede weeds as a ground cover. Further research should focus on local landraces maintained by farmers and the crop wild relative is a worthwhile undertaking given its local importance and for future genetic improvement both as a food and feed crop.

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Moisture and Planting Density Interactions Affect Productivity in Cowpea (Vigna unguiculata)

Cited by 20 publications

References 10 publications

Effects of plant extracts on growth, yield and protein content of cowpea (Vigna unguiculata (L.) Walp.)

Effects of plant extracts on growth, yield and protein content of cowpea (Vigna unguiculata (L.) Walp.)

The Effects of Maize Planting Density and Weeding Regimes on Light and Water Use

Cowpea (Vigna unguiculata (L.)Walp., Fabaceae) landrace (local farmers varieties) diversity and ethnobotany in Southwestern and Eastern parts of Ethiopia

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