Horticulture Research Papers/Topics

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

ABSTRACT The 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 combination with nemacur. T....

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

ABSTRACT Calla 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 formul...

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

ABSTRACT Rose 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 c...

Genotype × Environment Interaction Studies On The Performance, Adaptability And Stability Of Pre- Release Flue-Cured Tobacco Hybrid Lines In Zimbabwe

ABSTRACT  The nature and magnitude of the genotype × environment interactions is important to identify superior and stable genotypes under target environments. This will assist to maximize specific adaptation and to speed up the distribution of new cultivars to growers. Eleven prerelease flue cured tobacco hybrid lines were evaluated for yield and quality in four different tobacco growing regions thus, Kutsaga and Rusape representing the slow growing areas, Trelawney representing the medium...

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

ABSTRACT African 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 hor...

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

ABSTRACT African 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 hor...

Variations In Yields And Yield Components With Geographical Location And Response Of Clonal Tea (Camellia Sinensis) To Nitrogenous Fertiliser Rates In Kenya

ABSTRACT Tea provides income and employment to rural populations in many countries. Tea, grown in east and west of the Rift Valley, is the leading export commodity crop in Kenya. Variable responses among genotypes to different environments and fertilizer influence growth, productivity, leaf nutrients, and quality. However, husbandry practices are uniform in all tea growing regions. These recommendations may not be optimum universally. Genotypes planted and management practices may therefore n...

Farmers Information Literacy And Awareness Towards Agricultural Produce And Food Security: FADAMA III Programs In Osun State Nigeria

Abstract: Agriculture remains the mainstay of the Nigerian economy, because it does not only contribute to the largest share of Gross Domestic Product (GDP), it is the largest employer of labour and a key contributor to wealth creation and poverty alleviation, as large percentage of the population derive their income from agriculture and related activities . Agricultural sector is the backbone of many economies in Africa, but most African countries are yet to devote their efforts to the diss...

EVALUATION OF ENTOMOPATHOGENIC FUNGAL ISOLATE(S) FOR MANAGEMENT OF MELON FRUIT FLY (Zeugodacus Cucurbitae) (Coquillette)

ABSTRACT The melon fly, Zeugodacus cucurbitae (Coquillett), is a serious pest of cucurbits, tree fruits and related crops in most continents of the world, including Africa. To manage the pest, most farmers in sub-Saharan Africa rely on synthetic chemicals which have detrimental effects to the environment and the habitat. Excessive use of chemicals may also lead to development of pest resistance and Z. cucurbitae has reportedly shown the most increased resistance to the used insecticides. For ...

Effect Of Nitrogen Sources On Nitrous Oxide Emission, Maize (Zea Mays L) Yield And Nitrogen Use Efficiency In Western Kenya

ABSTRACT Nitrogen deficiency is a major limiting factor for maize production in western Kenya, therefore, nitrogen fertilizer inputs are required to increase yields in the region. However, most resource poor farmers use low rates of inorganic fertilizers leading to low maize yields. While high rates of inorganic fertilizer application may increase yields, they are however associated with low nitrogen use efficiency (NUE) and emission of greenhouse gases (GHGs) to the environment. Cattle manur...

SCREENING FOR DISEASE AND ROOTKNOT (Meloidogyne Javanica) RESISTANCE ON LOCAL TOBACCO LANDRACES (Nicotiana Tabacum L.)

ABSTRACT Thirty local tobacco landraces collected from non-traditional tobacco belt of Zimbabwe, such as Binga, Mutoko and Masvingo were screened for resistance against Tobacco Mosaic Virus (TMV), Potato Virus Y (PVY) and rootknot nematodes (RKN). The thrust of the study was to assess the level of resistance of the landraces to these major diseases of economic importance in tobacco. A standard flue cured tobacco (FCT) variety KE1, which is susceptible to all tobacco diseases was used as a pos...

Analysis of phenolic compounds in Carica papaya, Zingiber officinale, Ipomoea batatas and Myrothamnus flabellifolius using RP-HPLC-UV/VIS-DAD, and in vitro evaluation of antifungal activity o

ABSTRACT Agricultural pesticides use is rising in crop protection against plant invaders of which fungi are chief in reducing both yield quantity and quality. Botrytis cinerea, Rhizoctonia solani, Macrophomina phaseolina and Alternaria alternata are polyphagous fungi of economic importance with severe yield and quality losses worldwide. Environmental concerns on pesticide use and their resistance now on a worldwide scale. Extensive studies of plant secondary metabolites have not exhausted the...

EFFECT OF CUTTING POSITION AND VINE PRUNING LEVEL ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea Batatas L.).

ABSTRACT There is yawning variation in yield of storage roots and vines of sweet potato (Ipomoea batatas) among farmers due to the use of different cutting positions and pruning of vines at different levels. Therefore, the aim of this study was to establish the cutting position and the vine pruning level that give the highest yield of both the storage roots and vines. Determination of storage root length, central storage root diameter, storage root weight and vine weight among different cutti...

The influence of spacing and plant age at first harvest on the growth, development, and yield of three roselle (hibiscus sabdariffa l.) Cultivars

ABSTRACT A field experiment was conducted to examine optimum plant population and compare yields of three local roselle cultivars; namely Bihi, Mogla 1 and Mogla 2 planted at four different spacings and harvesting at 31 days after planting by pruning the plant at 13.0 cm high. Subsequent harvesting of shoots was done at fortnightly intervals. The spacings were; 30cm x 30cm, 30cmx 35cm, 30cm x 40cm, and 30cm x 45cm. A pot experiment was also carried out to determine the appropriate plant age ...

Yield, Nutritional Quality And Heavy Metals Toxicity In Roselle (Hibiscus Sabdarrifa L.) And Jute Mallow (Corchorus Olitorius L.) Crops As Affected By Two Commercial Composts And Chicken Manu

ABSTRACT Field and laboratory experiments were conducted to determine the effect of different compost formulations on yield, nutrient status, and possible heavy metal toxicity in roselle (Hibiscus sabdarrifa L.) and jute mallow (Corchorus olitorius L.). The vegetable crops were cultivated on an upland field (Latitude 09o 25ꞌꞌ N, Longitude 00o 58 ꞌꞌ W) with an Altitude of 183 m above sea level consisting of the Kpalsawgu soil series, located at Changnaayili in the Northern Region of Gh...


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