Research Papers/Topics in Horticulture

Evaluation Of Agronets On Microclimate Modification, Insect Pest Control And Cabbage (Brassica Oleraceae Var.Capitata) Crop Performance

ABSTRACTThis study was done to evaluate the effects of agronets on insect pests and crop performance on cabbage production under Kenyan conditions. Two experiments were conducted over a span of two seasons at the Horticulture Research and Teaching Field, Egerton University. The objectives were to determine the effects of agronets on (1) microclimate modification, (2) insect pest population and damage, and (3) the subsequent effect on seedling performance, crop growth, yield and quality of cab...

Morphological Characterization And Response Of Spider Plant (Cleome Gynandra L.) To Npk Fertilizer Rates And Deflowering

ABSTRACTSpider plant (Cleome gynandra) is among traditional leafy vegetables whose consumption is increasing in Kenya. Characterization of spider plant ecotypes has not been exclusively done even though a collection exists at the national museums of Kenya. Production of spider plant as a vegetable is constrained by low leaf yields resulting from lack of improved planting materials and a short vegetative phase of the plant. The objective of this study was to morphologically characterize 36 spi...

Efficacy Of Biofumigation Using African Spider Plant (Cleome Gynandra) On Weed Control, Growth And Aesthetic Quality Of Paspalum Turfgrass (Paspalum Notatum) During Lawn Establishment

Weeds interfere with turfgrass growth lowering functional and aesthetic quality of lawns. Conventional weed control using synthetic pesticides is hazardous to lawn users and to the environment while cultivation alone is not sufficient. A study was conducted with the aim of exploring the potential of biofumigation with African spider plant (Cleome gynandra) as an environmentally friendly alternative to use of synthetic herbicides for establishment of weed-free Paspalum...

Influence Of Different Agronet Covers On Vegetative Growth, Yield And Quality Of African Nightshade (Solanum Scabrum Mill.) And Spiderplant (Cleome Gynandra L.)

ABSTRACTAfrican indigenous leafy vegetables (AILVs) contribute significantly to improved nutrition and food security. However, the potential to meet the growing demand for AILVs has not been met. This study determined the effect of agronets on growth, yield and nutritive values of African nightshade and spiderplant. The experiment was laid on a RCBD, replicated thrice. Blue, gray, white, yellow agronets and uncovered plants (control) were used as the treatments. Spiderplant was direct seeded ...

Effect Of Tagetes Minuta And Capsicum Frutescens Extracts On Pectobacterium Carotovorum, Growth, Yield And Quality Of Potatoes (Solanum Tuberosum)

ABSTRACTPotato production is hindered by pathogens like Pectobacterium carotovorum that cause blackleg in the field and soft rot after harvest. The purpose of this study was to determine the possibility of integrating Tagetes minuta and Capsicum frutescens extracts in the management of soft rot and blackleg in potatoes. The research was conducted at the horticulture research and teaching laboratory and field of Egerton University, Njoro. In vitro and in vivo experiments were set up in a Compl...

Effects Of Bioslurry And Plant Biostimulant Hicure® On Growth, Yield And Postharvest Quality Of Carnation (Dianthus Caryophyllus L.)

ABSTRACTCarnation growers heavily use mineral fertilizers and plant growth regulators to obtain desirable stem length, girth and flower head size against Global GAP. This dependency on inorganic fertilizers and synthetic chemicals adversely pollute the environment. While there are limited alternatives to inorganic fertilisers for meeting the nutritional requirements of crops, organic products for regulating plant growth and development are lacking in some crops. The main objective of this stu...

Influence Of Colour Of Agronet Cover On Pest Infestation And Tomato (Solanum Lycopersicum L.) Growth, Yield And Quality

ABSTRACTTomato (Solanum lycopersicum L.) is a nutritious vegetable consumed worldwide. Open field production faces a number of constraints including biotic and abiotic stresses. The general objective of the study was to enhance tomato productivity through provision of an alternative pest control and protected cropping system that is relatively affordable to small scale farmers. The study entailed a field production and laboratory postharvest experiment at the Horticulture Research Field, Eger...

Effects Of Nitrogen, Phosphorus And Watering Regimes On Growth, Leaf Yield And Essential Oils Of Sage (Salvia Officinalis L.)

ABSTRACTSage (Salvia officinalis L.) belongs to Lamiacea family. It is well known as a common medicinal and aromatic plant widely used in food as well as herbal medicine products. It has wide applications in food flavouring, cosmetics and perfumery by the use of its essential oil. In Kenya, it is increasingly becoming important mostly being grown by export farms. Its leaf productivity is however often limited by nitrogen and phosphorus, which are deficient in many Kenyan soils. The problem is...

Performance Of Wild Blackberry (Rubus Spp.) Under Conventional Production In Kenya

ABSTRACTBlackberry (Rubus L. sub-genus Rubus Watson) fruits grow wild in Kenya; though in some parts of the world they have been adopted and are cultivated commercially. However, limited information is available regarding, growth characteristics, fruit yield and quality of wild species growing in Kenya under conventional production. The objective of the study was to contribute towards increased blackberry cultivation, by evaluating the performance of wild blackberry species under conventional...

Influence Of Different Coloured Agronet Covers On Water Use Efficiency, Insect Pest Populations, Yield And Quality Of French Bean (Phaseolus Vulgaris L.)

ABSTRACTFrench bean (Phaseolus vulgaris L.) is among the leading export vegetables in Kenya, intensively grown by small scale farmers. Despite the economic importance of the crop, many growers are still not able to achieve maximum yield and quality due to unfavourable weather and heavy infestation by insect pests as the crop is predominantly grown in open fields. Coloured net technology is an emerging technology, which introduces additional benefits on top of the various protective functions ...

Management Of Root-Knot Nematodes And Weeds Using Different Amendments In Greenhouse Grown Asclepias (Asclepias Tuberosa L.)

ABSTRACTThe research tested the potential of Tagetes patula, Lantana camara, Tephrosia vogelii and Azadirachta indica to manage root knot nematodes and weeds on greenhouse grown Asclepias tuberosa. Field trials were conducted at James Finlay’s (K) Flowers-Kericho for two seasons under greenhouse conditions. The experiment was laid in Complete Randomised Block Design replicated three times. Chopped plant materials were applied singly as soil amendment or in combinati...

Effect Of Coptis (Coptis Chinensis, Franch.) Extract On Calla Lily (Zantedeschia Sp.) Soft Rot, Growth, Yield And Quality

ABSTRACTCalla lily (Zantedeschia sp.) is cultivated as a cut flower, pot plant or garden ornamental throughout the world and contributes to horticultural revenue for many countries including America, Holland, New Zealand and Kenya. However, bacterial soft rot caused by Pectobacterium carotovorum subsp. carotovorum affects the commercial viability of this crop in Kenya. The disease infects calla lily at all stages of growth resulting in death of plants and decay of tubers. Bactericidal formula...

Growth And Quality Of Rose (Rosa Hybrida L.) Cultivars As Influenced By Poly Film Covers And Different Concentrations Of Calcium Foliar Feed

ABSTRACTRose cut flower production contributes significantly to Kenya’s economy and its quality is therefore paramount for sustainability on the export market. Despite the tremendous contribution, profitable production of cut rose flower is limited by unsuitable growth conditions which lead to low quality produce. A study was set up at Egerton University to investigate sustainable ways to improve growth and quality of rose cultivars through integration of greenhouse growth conditions and ca...

Agro-Morphological And Nutritional Characterization Of Horned Melon Accessions From Selected Agro-Ecological Zones In Kenya.

ABSTRACTAfrican horned melon (Cucumis metuliferus) is an indigenous crop belonging to the family Cucurbitaceae. The crop has been neglected despite its high potential. Therefore, to conserve the biodiversity of this crop, there is need to promote its domestication and production. However, this can only be realized if its morphology, agronomic and nutritional value is understood. The objective of this study was to determine the agro-morphological performance and nutritional composition of horn...

Agro-Morphological And Nutritional Characterization Of Horned Melon Accessions From Selected Agro-Ecological Zones In Kenya

ABSTRACTAfrican horned melon (Cucumis metuliferus) is an indigenous crop belonging to the family Cucurbitaceae. The crop has been neglected despite its high potential. Therefore, to conserve the biodiversity of this crop, there is need to promote its domestication and production. However, this can only be realized if its morphology, agronomic and nutritional value is understood. The objective of this study was to determine the agro-morphological performance and nutritional composition of horn...


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