Response of Bambara Groundnut (Vigna subterranea (l.) Verdc.) to Phosphorus Fertilisation in Botswana

Ramolemana, G.M.; Maphanyane, G.S.; Keltjens, Willem G.; Mpuisang, T.

doi:10.4314/uniswa-rjast.v4i2.4682

Cited by 1 publication

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“…Karachi and Lefofe [28] also reported phosphorus deficiency and high calcium and phosphorus ratio in cowpea forage grown in Botswana. e high calcium and phosphorus ratio in the current study could be attributable to soils in Botswana being inherently poor in phosphorus [57]. Castro-Montoya et al [58] demonstrated that legume crop residues improve dry matter intake in dairy cattle than sorghum silage when fed in total mix ration.…”

Section: Fodder Nutritive Value Of Husk Leaf and Stem Plantmentioning

confidence: 63%

Effect of Plant Spacing on Agronomic Performance and Fodder Quality of Four Tepary Bean (Phaseolus acutifolius A. Gray) Cultivars

Molosiwa¹,

Baleseng

Chirwa³

2022

International Journal of Agronomy

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Tepary bean is gaining interest around the world as a dryland field crop. A two-year field experiment was conducted to determine the effect of plant spacing on the agronomic performance and fodder quality of the crop. A split-plot design was used with three replications, four cultivars (GK010, GK011, GK012, and Motsumi) were assigned to main plots, while subplots were three intrarow plant spacing (10 cm, 20 cm, and 30 cm). Four agronomic variables and eight chemical compositions, including in vitro dry matter digestibility (IVDMD) of husk, stem, and leaf, were measured. Spacing significantly ( P < 0.05 ) influenced plant biomass, pod yield, harvest index, and seed yield, while cultivar affected only pod yield and seed yield. Plant biomass increased with plant spacing where 10 cm produced 936 kg/ha; 20 cm, 750 kg/ha; and 30 cm, 611 kg/ha for 2015–2016 while 10, 20, and 30 cm were observed for 1568 kg/ha, 1135 kg/ha, and 889 kg/ha, respectively, in 2016–2017 season. These trends are attributed to the higher plant population in the narrow row spacing. GK012 consistently outperformed other cultivars for plant biomass, pod yield, and seed yield and has a potential for further selection. Fodder nutritive qualities were not affected by cultivar, while spacing only influenced IVDMD. The three plant parts were significantly ( P < 0.05 ) different for all the nutritive qualities. Leaves had significantly ( P < 0.05 ) lower values of ADF, CF, and NDF compared to those of stem and husk an indication of relatively higher digestibility of the leaf. Acid detergent fiber (40%), neutral detergent fiber (53.65%), crude fiber (35.45%), ash content (12.29%), dry matter (93.09%), and IVDMD (70.66%) were recorded. This study revealed that tepary bean forage has good nutritional content, except for the low phosphorus level. For higher agronomic performance, tepary cultivars should be planted at a spacing of 10 cm without compromising forage quality.

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Section: Fodder Nutritive Value Of Husk Leaf and Stem Plantmentioning

confidence: 63%