ABSTRACT Cassava (Manihot esculenta, Crantz) is primarily grown for its starch containing tuberous roots, which are a major source of dietary energy in the tropics. It is highly perishable and begins to degenerate shortly after harvest. Cassava in the fresh form contains cyanide, which is extremely toxic to humans and animals. These factors make the processing of cassava into a dry form a necessity. Processing is essential for the removal of cyanides from cassava roots. This post-harvest nece...
ABSTRACT Three experiments were conducted to evaluate cassava, a tropical root crop, as a source of energy in diets containing all vegetable protein or 5% fish meal which is a source of readily available essential amino acids required by growing chicks. The biological metabolizable energy (ME) was determined replacing part of the basal diet with the test materials (cassava meal Grades I and II combined and Grade III. Grades I and II have little of the rind and outer cover whereas Grade III co...
SUMMARY Two field experiment where conducted to evaluate the performance of 142 prodigenes
ABSTRACT Two field studies were carried out from July 2012 to February 2013 to determine the efficacy of four groups of herbicide on weed control, growth and yield of maize (Zea mays L.) and to investigate the influence of their residual effect on weed succession, rotation crop, soil nutrient status and microbial population at the University Farm, Legon. The experiments, laid out in randomized complete block design, consisted of four replications of eight herbicide treatments from four herb...
ABSTRACT Pineapple (Ananas comosus L. Merr) production in Uganda is being constrained by a diversity of factors including pineapple heart rot disease (PHRD). Information on PHRD causal pathogen is limited. Also, management options are clear. The objectives of this study were, therefore, to identify the casual pathogens causing PHRD and assess the in vitro reaction of the causal pathogens to fungicides. Pathogen isolation was done using amended corn meal agar. Macro and micro-morphological ch...
ABSTRACT A g r e e n h o u s e p o t e x p e r i m e n t w a s s e t up t o f i n d the effect of added p h o sp h o ru s on the ava ilability and u p t a k e o f P s M n a n d F e b y r i c e p l a n t u n d e r f l o o d e d conditions. Two soil s e r ie s Akuse and Amo (verti« sol and Inceptisol, re sp ectiv ely ) were used. The e x p e r i m e n t was of a s i m p l e f a c t o r i a l d e s i g n c o m p r i sing of four l e v e l s of P with and without r i c e p l an t on both soi...
ABSTRACT Pineapple (Ananas comosus (L.) Merr) is of tremendous imponance as a fruit crop in Uganda. However, production in Uganda is currently threatened by outbreaks of pineapple heart rot disease (PHRD). PHRD is the most widespread and devastating disease of pineapple in Uganda and can cause tremendous yield loss. Although, some preliminary information exists on PHRD in Uganda, the yield loss attributed to the disease bas not quantified neither is there any information on sources of resist...
Abstract Forty-five cowpea accessions, randomly selected from cowpea germplasm from four cowpea-growing regions of Ghana, namely, Upper East, Upper West, Northern and Eastern Regions, were characterized and evaluated at the Plant Genetic Resources Unit of the Crops Research Institute at Bunso with the objective to determine the range of variability in the samples with respect to vegetative, inflorescence and fruit characters. The variability in the samples was used to initiate hybridization...
ABSTRACT Three experiments were conducted during the dry season from October 2001 to April 2002 at the University of Ghana Farms and the Food Research Institute, to evaluate two methods of conservation of sweet potato planting material and one method of multiplication of vines was evaluated in this study using two cultivars - Sauti and Okumkom released to farmers by the Crops Research Institute. The study was aimed at developing technology to ensure the availability of adequate quantities o...
ABSTRACT Studies were undertaken to identify the pathogens associated with rotting of white yam (.Dioscorea rotundata var. Araba, Asana and Puna) in Ghana, to identify exportable white yam varieties with superior shelf life and to evaluate the effectiveness of lime and neem wood-ash in controlling rots in wounded yam tubers. A field survey was conducted among yam retailers and exporters in Accra. The results revealed that: a major constraint to yam production and marketing in Ghana is the hig...
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 under labo...
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 the av...
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: diameter ratio...
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 was co...
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” (yellow sk...