The effects of nitrogen and period of weed interference on the fibre yield of kenaf (Hisbiscus cannabinus L.) in the northern Guinea Savanna of Nigeria

Kuchinda, N. C.; Ndahi, W. B.; Lagoke, S. T. O.; Ahmed, MK

doi:10.1016/s0261-2194(00)00138-1

Cited by 16 publications

(18 citation statements)

References 6 publications

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“…Furthermore, MacAdam et al (1989) found an increase in cell elongation with an increase in nitrogen supply. An increase in stem height and diameter with increasing nitrogen level was also reported by Kuchinda et al (2001).…”

Section: Discussionsupporting

confidence: 66%

Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

Kabeya

Robbertse

Marais

et al. 2017

South African Journal of Plant and Soil

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Kenaf provides high quality fibre which is used in paper making, building materials and absorbents. The study aims were to conduct a proper anatomical study of fibre development in kenaf stems, and to investigate if the number of fibre wedges, fibre rings (layers) and fibre bundles can be used as a tool to determine fibre development response to different agronomic practices. The practices evaluated included different nitrogen levels (0, 50, 100 and 150 kg ha-1 N) under both rainfed and irrigated conditions, as well as different combinations of plant population density (300,000, 400,000, 500,000 and 600,000 plants ha-1) and row spacing (0.17, 0.34, and 0.50 m) under rainfed conditions. In most cases N, water, and plant population density were the principal factors affecting the number of fibre rings and fibre bundles, but not the number of fibre wedges. Higher levels of N and more water increased the number of fibre rings and fibre bundles, while at higher plant populations, these decreased. No 2 clear trends were observed with regards to row spacing. The results of this study suggested that under local conditions, 150 kg ha-1 of nitrogen applied in two splits, 300,000 plants per hectare and 0.50 m row spacing was the optimal combination of agronomic practices in terms of fibre development per plant. This paper gives a more complete explanation of fibre development in kenaf and shows how plant anatomy can be used as a tool to assess fibre development.

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Section: Discussionsupporting

confidence: 66%

Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

Kabeya

Robbertse

Marais

et al. 2017

South African Journal of Plant and Soil

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“…Yield reductions due to weeds may be substantial, with reductions in safflower yields ranging from 33 to >70% (Naghavi et al ., ). Sunflower production suffers from 58% to 99% weed infestation in some areas (Jurado‐Expósito et al ., ), and weeds have been shown to reduce kenaf yields by 40% in the Sudan (Fageiry, ) and 31.5–53.3% in Nigeria (Kuchinda et al ., ), while in the United States, cultivation increased kenaf yield and stem diameter (Burnside & Wiliams, ). Flax, another minor crop produced for fibre and oilseed, has a relatively poor competitive ability with weeds and suffers oilseed yield reductions of up to 82.1% (Bell & Nalewaja, ).…”

Section: Discussionmentioning

confidence: 99%

A call for weed research in industrial hemp (Cannabis sativa L)

Sandler

Gibson

2019

Weed Research

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Summary Industrial hemp (Cannabis sativa L.) is grown in more than 30 countries for fibre, seed and flowers, and acreage of cultivation is increasing globally. Hemp has long been promoted as a crop that competes well with weeds and requires little intervention to prevent yield losses. We conducted a literature review and found little peer‐reviewed research to support this claim. We identified only three articles that specifically addressed weed management under field conditions and none provided information on hemp yield losses from weeds. These findings highlight a clear need for research‐based information on interactions between weeds and hemp to address potential yield losses under various production conditions and provide a research‐based framework for weed management in industrial hemp.

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“…One is that kenaf absorbs the nitrogen and phosphorus that are present in the soil. These minerals also help to increase cumulative weed weight, crop height, stem diameter, and fibre yield [25]. Researchers Kuchinda et al have determined that nitrogen application at 90 kgN/ha has significant effect for plant growing.…”

Section: Kenaf Fibrementioning

confidence: 99%

A Review of the Flammability Factors of Kenaf and Allied Fibre Reinforced Polymer Composites

Lee

Salit

Hassan

2014

Advances in Materials Science and Engineering

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Natural fibre is a well-known reinforcement fibre in polymer-matrix Composites (PMC) lately. Natural fibre has fast growing and abundance properties which make it available at very low cost. For kenaf fibre there is long lists of research projects which have been done regarding its behaviour, and properties and modification made to it. In this paper, fire flammability is the main concern for natural fibre reinforced polymer (NFRP) composites especially kenaf fibre. To estimate its flammability, a wide range of factors can be considered such as fibre content, type of matrices, pH conditions, treatment, and fire retardant (FR) filler’s type. The most important criteria are the ignition time, rate of propagation, and fire behavior. thermogravimetric analysis (TGA), different scanning calorimetric (DSC), and dynamic mechanical analysis (DMA) are the three most famous methods used to investigate the fire behaviour of composites.

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The effects of nitrogen and period of weed interference on the fibre yield of kenaf (Hisbiscus cannabinus L.) in the northern Guinea Savanna of Nigeria

Cited by 16 publications

References 6 publications

Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

A call for weed research in industrial hemp (Cannabis sativa L)

A Review of the Flammability Factors of Kenaf and Allied Fibre Reinforced Polymer Composites

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