Research Papers/Topics in Agronomy

Effects Of Tillage Method And Sowing Time On Growth, Water Use And Yield Of Chickpea (Cicer Arietinum L.) In Kenyan Dry Highlands

ABSTRACTThe need to provide sufficient protein food for an increasing population that is mainlyresource poor requires opening up of marginal land for growing appropriate pulses suchas chickpea. An experiment was carried out at KARI-Naivasha situated at an altitude of1900 m, characterized with clayey to sandy loam soils in a split plot of randomizedcomplete block design over two seasons (December 29, 2004 to May 26, 2005 and June21 to November 15, 2007). The objective was to investigate the pr...

Effect of Time of Paclobutrazol Application on Growth, Quality and Yield of Potato (solanum tuberosum l.) In The Lowveld of Zimbabwe

ABSTRACT Irish potato is a cool-season crop that require low temperatures for high yields. In potato production tuberisation is an important and complex process. High temperatures reduce successful cultivation of potato in the lowveld of Zimbabwe because they tend to promote vegetative growth at the expense of tuber production. High temperatures may increase in gibberellin activity that inhibits tuberisation.To overcome this problem paclobutrazol can be used to overcome the inhibitory e...

Effect Of Time And Method Of Paclobutrazol Application On Growth, Quality And Yield Of Potato (Solanum Tuberosum L.)

ABSTRACTPotato is one of the most widely grown tuber crop that contribute significantly to humannutrition and food security. Potato is a cool season crop and high temperatures are inhibitoryto tuberization resulting in low yields. This is mainly due to production of high levels ofgibberellins at high temperatures that promote vegetative growth at the expense oftuberization. The balance of hormones that control tuberization can be managed by usinganti-gibberellin synthesis such as paclobutrazo...

Effects of Pearl Millet (Pennisetum Glaucum L.)–Cowpea (Vigna Unguiculata L.) Intercrop On Striga Hermonthica (Del.) Benth, Yield Components and Grain Yield in the Sudan Savannah Zone of Ghan

ABSTRACT Field experiment was conducted on naturally Striga hermonthica infested field in the Kassena-Nankana East District of the Upper East Region during the 2018 cropping season. This was to investigate effects of Striga tolerant pearl millet varieties intercropped with cowpea on S. hermonthica, crop yield and yield components. The study was a 4 x 3 factorial experiment consisting of four pearl millet varieties (Akad kom, Kaanati, Naad kohblug and Waapp naara) and three cropping p...

Screening And Evaluation Of Some Genotypes Of Maize (Zea Mays L.) And Their F1 Hybrids For Tolerance To Drought And Striga Hermonthica (Del.) Benth

ABSTRACT Drought stress and striga parasitism are major constraints to maize (Zea mays L.) production in Northern Ghana. Two experiments were conducted to screen some genotypes of maize for tolerance to drought and Striga hermonthica at Nyankpala in the Guinea Savanna agro ecological zone of Ghana. In Experiment 1, seeds were planted in pots of 0.01 m3 volume arranged in rows on a platform in a screen house at Nyankpala. Genotypes were replicated three times in a completely randomized de...

Susceptibility Of Cowpea (Vigna Unguiculata (L.) Walpers.) Varieties To The Pulse Beetle (Callosobruchus Maculatus Fab.)

ABSTRACT The pulse beetle, Callosobruchus maculatus (F.) is a key pest to stored cowpea. There is limited information on host plant resistance management of this pest on cowpea in Northern Ghana. A laboratory experiment was conducted to test for varietal resistance of some improved varieties against this pest in cowpea. The experiment was laid out in a Completely Randomized Design (CRD). Seven varieties of cowpea namely; Padi-tuya, Songotra, Apagbaala, Zaayura, Bawutawuta, Marfo-tuya...

Evaluation Of Botanicals For The Control Of Anthracnose (Colletotrichum Gloeosporioides Penz) Of Yam (Dioscorea Rotundata Poir)

ABSTRACT Anthracnose is the most serious leaf and vine epiphytotic disease of yam that causes yield loss. Severe infection results in vine dieback, defoliation, and tuber rot. Aqueous extracts of Azadirachta indica A Jus seed (Neem tree seed), Jatropha curcas ( L) seed (Jatropha plant seed) and Nicotiana tabacum (L) leaf (Tobacco plant leaf) extracts were evaluated for the control of anthracnose disease of yam (Dioscorea rotundata Poir). The pathogen was isolated, identified and its gro...

Effects Of Some Field Practices On The Yield And Quality Of Cassava (Manihot esculenta Crantz) Planting Material

ABSTRACTThe use of cassava stems as planting materials is limited by scarcity, poor quality, high cost and inappropriate field techniques (land preparation, planting spacing, and field maintenance). To enhance the supply of stem for planting cassava varieties, the existing production practices were evaluated and techniques for increasing the number and quality of cassava planting materials were investigated. Seventy-four cassava farms, purposively selected in 11 major...

GENETIC VARIABILITY FOR STEM BORER RESISTANCE IN TWO ADAPTED EARLY-MATURING MAIZE (Zea mays L.) POPULATIONS

Stem borers are among the major biotic stresses limiting the grain yield of maize, an important cereal crop in Africa. Breeding for multiple resistance to maize stem borers has been reported to be a promising method of control. Understanding the genetic variability of crop populations will help in improving them for pest resistance. Thus, genetic variability for dual resistance to two stem borer species were determined in a white (DMR ESR-W) and a yellow (DMR ESR-Y) m...

Characterization And Evaluation Of Selected Soils Of Southern Nigeria For Rubber (Hevea Brasiliensis, Muell. Arg.) Cultivation

ABSTRACTSuccessful land management for tree crop production requires good knowledge of the soilvariation and suitability for specific tree crops. Most of the traditional rubber growing areas inNigeria have not been evaluated for their suitability and production potential. Characterisationand evaluation of the land for rubber production was therefore conducted.Soils of two rubber producing areas: Iyanomo, Edo State and Akwete, Abia State werecharacterised and evaluated using local, United Stat...

Genetic Variability For Stem Borer Resistance In Two Adapted Early-Maturing Maize (Zea Mays L.) Populations

ABSTRACTStem borers are among the major biotic stresses limiting the grain yield of maize,an important cereal crop in Africa. Breeding for multiple resistance to maize stemborers has been reported to be a promising method of control. Understanding thegenetic variability of crop populations will help in improving them for pest resistance.Thus, genetic variability for dual resistance to two stem borer species were determinedin a white (DMR ESR-W) and a yellow (DMR ESR-Y) maize populations to pr...

Evaluation Of Mehlich - 3 As A Multipurpose Extractant Of Phosphorus And Potassium Using Bell Pepper (Capsicum Annuum L.) In Some Nigerian Soils

ABSTRACTUse of single soil specific extractants to determine plant available phosphorusand exchangeable potassium for crops such as bell pepper, are costly, laborious andtime wasting. Bell pepper, rich in antioxidants, requires phosphorus and potassium forhigh quality fruit yield. Mehlich-3 (M3), a multi-purpose extractant could extractphosphorus and potassium simultaneously. However, M3 has not been evaluated andadapted for Nigerian soils. Therefore, M3 as a multi-purpose extractant of P and...

Effects Of Postharvest Handling Methods And Storage Conditions On Storability Of Pepper (Capsicum Frutescens L.) Fruits In Southwest Nigeria

ABSTRACTPepper a perishable seasonal fruit, requires storage to extend its shelf-life.Appropriate postharvest handling and storage prolong longevity and preserve qualityof Pepper Fruit (PF). However, there is dearth of information on its handling andstorage in Southwest Nigeria. Therefore, the effects of postharvest handling methodsand storage conditions on storability of PF were investigated.Two hundred Pepper Fruit Marketers (PFM) were randomly selected frompepper markets in Ibadan, Oyo Sta...

Effects Of Integrated Use Of Vetiver Grass Strips And Mulch On Soil Erosion And Maize Grain Yield In Ikenne, Nigeria

ABSTRACTSoil erosion is a major threat to sustainable agriculture in the humid tropics.Management practices adopted to control soil erosion and improve soil quality includemulching and the use of Vetiver Grass Strips (VGS). Integrating VGS with mulch couldbe more effective in controlling soil erosion than VGS or mulching alone. However,information on the effectiveness of combined utilisation of VGS and Vetiver Mulch(VM) in controlling soil erosion and improving crop yield is scanty. Therefore...

Responses of Cucumber to Poultry Manure And Npk Fertilizer in Owerri, Southern Eastern, Nigeria

ABSTRACT   A field experiment was carried out at the Federal University of Technology Teaching and Research Farm, Owerri, to ascertain the responses of Cucumber (Cucumis sativus) to poultry manure and NPK fertilizers during the 2013 cropping season. The experiment was laid out as a 3x3 factorial in Randomized Complete Block Design replicated three times. The treatments were: poultry manure rates of 0, 5 and 10 ton/ha while N.P.K. rates were 0,200 and 400 kg/ha. Data on various...


1 - 15 Of 29 Results