Research Papers/Topics in Crop Science

Causes And Control Of Tuber Rots Of White Yam (Dioscorea Rotumdata Poir Varieties Araba, Asana And Puna)

ABSTRACTStudies were undertaken to identify the pathogens associated with rotting of white yam(.Dioscorea rotundata var. Araba, Asana and Puna) in Ghana, to identify exportable whiteyam varieties with superior shelf life and to evaluate the effectiveness of lime and neemwood-ash in controlling rots in wounded yam tubers.A field survey was conducted among yam retailers and exporters in Accra. The resultsrevealed that: a major constraint to yam production and marketing in Ghana is the highperce...

Influence Of The Metabolites Of Three Paecilomyces Species On The Germination And Seedling Development Of Two Ghanaian Maize Varieties (Abeleehi And Obaatanpa)

ABSTRACT The mycoflora of two recently-developed maize (Zea mays L) varieties Abeleehi and Obaatanpa have been studied under varying ambient equilibrium relative humidities E R H ’s (55, 60, 65, 70, 75, 80, 85, 90 and 95%) representative of the Ghanaian ambient conditions. The potential pathogenicity of selected contaminating fungal species (A. alutaceus, = A. ochraceus, Fusarium, moniliforme, Penicillium digitatum, Peacilomyces carneus, P. puntoni and P. varioti) was also tested unde...

Evaluation Of The Potential Of Mucuna, Pueraria And Cowpea As Cover Crops In Tree Crop Plantations.

ABSTRACT Nodulation, dry matter yield, nitrogen accumulation and the potential for weed control of cowpea (Vigna unguiculata), mucuna (Mucuna pruriens var utilis ) and pueraria(Pueraria phaseoloides ) cover crops were assessed in pot and field experiments at the University of Ghana, Legon and the Oil Palm Research Institute, Kade respectively. The response of these cover crops to bradyrhizobial inoculation in two soil series, Kokofu and Nzima, was also studied. Rhizobial inoculation on ...

Evaluation Of Genetic Diversity In Garden Egg (Solanum Aethiopicum) Germplasm In Ghana

ABSTRACT Analysis of genetic relationships among accessions is a prerequisite to any viable genetic improvement. The main objective of the study was to determine the genetic variation among 20 garden egg accessions in Ghana based on morphological traits as well as calcium and iron content of fruits. Twenty garden eggs accessions were studied in a Randomized Complete Block Design with three replications. There was large variability between and among accessions. The fruit length: di...

A etiology And Importance of Foliage Diseases Affecting Citrus in The Nursery at The Agricultural Research Station (A.R.S.). Kade.

ABSTRACT Research work was carried out at the Agricultural Research Station to determine the disease status of the seedlings and budlings in the nursery. Field surveys were carried out on three separate occasions between October and December 2003 during the dry season and repeated in March to May 2004 in the rainy season. Four diseases were detected. These were citrus scab, citrus canker, greasy spot-like disease and brown leaf spot of rough lemon. The causal agent for brown leaf spot w...

Etiology Of Storage Rot Of Sweet Potato ( Ipomoea Batatas (L.) Lam.) And Its Control By Curing

ABSTRACT A survey was carried out to assess the extent of rot, and susceptibility of different types of sweet potato, and methods of storage in Ghana. Pathogens were isolated, identified and their pathogenicity established. The effectiveness of curing in extending the shelf-life of sweet potatoes was also studied. The market survey revealed that there are four types of sweet potato tubers (based on external colour). The local names of three of the sweet potato types are “Fante”...

Characterization of The Causal Agent of Mango Anthracnose Disease in Ghana

ABSTRACT This research work was carried out to update information on nature, the identity of the causal agent and the importance of mango anthracnose disease in Ghana. It was also to determine the effect of the disease on the juice quality of fruits and come up with appropriate control measures in the country. A field survey was carried out in 12 administrative districts of Ghana in 2010 and 2011 to assess the disease incidence and severity. The effect of the disease on yield/fruit qual...

Assessing The Current Status Of Greenhouse Industry In Selected Regions In Ghana

The greenhouse technology is a booming segment of agriculture in the world, because it offers a favorable climate conditions which increase plants growth as the plants are grown in a controlled environment. This research assessed the present conditions of the Controlled Environment Agriculture (CEA) in Ghana and emphasized on issues that are paramount to Greenhouse vegetable production effectiveness. The general objective was to evaluate the current status for greenho...

Studies On Oil Palm Based Cropping Systems In Ghana

A survey was conducted in 1994 to gather information on the practice of intercropping food crops in oil palm on small-scale farms in the oil palm zones of southern Ghana. The objective was to identify and study intercropping systems used in oil palm production. Data was collected by interviewing a total of 72 oil palm farmers from the oil palm growingregions,(Eastern, Central,Western,Ashanti,Brong-Ahafo,and Volta) at their farm locations. The respo...

Effective Use Of Bacillus Thuringiensis Berliner Subsp. Kurstaki For Control Of Diamondback Moth (Plutella Xylostella) (L .) (Lepidoptera: Plutellidae) On Cabbage

Two field experiments were carried out at W eija Irrigation Company (Ghana), from February to November 1995 on the effective use of Bacillus thuringiensis Berliner subsp. kurstaki (Dipel 2X) against the diamondback moth Plutella xylostella on cabbage (Brassica oleraceu var. capitata (L.). In the first experiment, different concentrations (0.25 g/1, 0.5 g/1, 1.0 g/1 and 2.0 g/1) of Bacillus thuringiensis subsp. kurstaki (B.t.) were applied at weekly and fortnightly int...

Genetic Analysis Of Host Plant Resistance To The Cassava Mosaic Disease

The genetic control of resistance to the cassava mosaic disease (CMD) in some African landraces, their relationship with the widely used resistant genetic stock, clone 58308, and molecular markers associated with resistance to CMD in the landraces were evaluated in this study. The F-i progenies of 54 cassava crosses and their parents (clone 58308, six improved clones and 15 African landraces) were evaluated in two genetic experiments in three environments in Nige...

Developing Maize (Zea Mays L.) For Fresh Maize Production In Southeastern Nigeria

ABSTRACT  Green (fresh) maize (Zea mays L.) provides food security and income to farmers especially when other crops are still in the field. However, research on green maize variety is scarcely reported in literature or information on suitable genetic material (germplasm) for green maize production. Developing maize for fresh maize production in the southeastern Nigeria was carried out in the Center for Agricultural Research, School of Agriculture and Agricultural Technology, Federa...

Influence Of Grafting On The Growth, Yield, Quality And Shelf Life Of Tomatoes (Solanum Lycopersicum L.) Grafted Onto Three Solanum Species

ABSTRACTA pot experiment was carried out from 15th December, 2014 to 20th June, 2015 at the University of Ghana Forest and Horticultural Crop Research Centre (FOHCREC), Okumaning under greenhouse conditions in a randomized complete block design to investigate the influence of grafting on growth, yield, quality and shelf life of tomato grafted onto three solanum species. Two tomato varieties ‘Fadeεbege’, and ‘Nkansah HT’ were used as scions and three solanum specie ‘Gboma’, ‘Bla...

Effect Of Type Of Initiation And Growing Media On Growth And Nutrient Uptake Of Plantain (Musa Aab) At The Nursery Stage

ABSTRACTPlantain (Musa spp) is one of the most important food crops. A limiting factor to large-scale production and or expansion of existing plantation is the difficulty in obtaining adequate planting materials. Although the tissue culture technique provides a higher multiplication rate, facilities are non-existent, and if available, the cost will be expensive and unavailable to most farmers in developing countries such as Ghana. The split-corm technique is a cheaper method for raising plant...

THE USE OF BIOPESTICIDES TO CONTROL INSECT PESTS OF PAWPAW

ABSTRACT Laboratory and field experiments were carried out between June 1997 and Januaiy 1999 at Paradise farm near Nsawam in the Eastern Region of Ghana to determine the major insect pests of papaya, Carica papaya and to evaluate the effectiveness of Bacillus thuringiensis and neem seed extract for controlling the insect pests of papaya. Methanolic and aqueous neem seed extracts were tested at the following concentrations 0 , 50, 75 and 100 g/1. Bacillus thuringiensis was applied a...


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