STUDIES ON THE LEAF SPOT DISEASE OF EGGPLANT
Sold By: Joe Project Store | Item Type: Project Material | Report this? | Attributes: 70 pages | 1-5 chapters | Amount: ₦5,000 | Marked useful: 5,307 times
Delivery: Within 24 hours STUDIES ON THE LEAF SPOT DISEASE OF EGGPLANT
ABSTRACT
Field, greenhouse and laboratory studies were carried out at the Department of Crop Science,
University of Nigeria, Nsukka in order to evaluate the leaf spot disease of eggplant and its
management with some botanicals. Field survey of diseased plants was conducted on
eggplant farm. Solanum aethiopicum L. plants were sampled on every 1 m distance along the
diagonal transects for disease incidence and severity. Pathogen isolation from severely
infected leaves was carried out in the laboratory where the diseased leaves were plated on
fresh Potato Dextrose Agar. Identification of the isolated fungi was carried out with the aid of
identification scheme based on their cultural characteristics. Nursery preparation for raising
eggplants used in the green house was also carried out on a sterilized soil. The five most
abundant pathogens isolated were inoculated separately on the seedlings of eggplant in five
replicates.
The experiment was arranged in a completely randomized design. Phytochemical
contents of the four plant extracts were determined in the laboratory. An in vitro control of the
organism responsible for the leaf spots was carried out using plant extracts at 0.030 g/ml,
0.060 g/ml, and 0.120 g/ml and 0.250 g/ml concentrations. The experimental design was a
9x4 factorial in a completely randomized design (CRD). The data were analyzed using
analysis of variance (ANOVA). Means were later separated using Fisher’s least significant
difference (F-LSD). Helminthosporium infestans Dur. & Mont, Cladophialophora carrionii
Trejos, Aspergillus niger van Tieghem, Rhizopus nigricans Ehrenb and Neurospora africana
Huang & Backus were isolated from the diseased eggplant leaves. H. infestans recorded the
highest percentage frequency (61.11 %) while A.
niger had the lowest percentage frequency
(5.56 %). H. infestans was pathogenic to eggplant seedlings. The Koch postulate test
confirmed H. infestans as the causal organism of the spots symptoms. The qualitative
phytochemical analysis on the test plants revealed the presence of tannin, soluble
carbohydrate, hydrogen cyanide, steroids, flavonoids, alkaloids as well as glucosides in all
the extracts analyzed. The effect of ethanolic extracts of the test plants significantly (Preduced the incidence and severity of the pathogen. Anti-fungal activity of seed extracts of G.
kola on H. infestans was highest at 0.0120 g/ml concentrations. G. kola could be used as
fungicide to manage leaf spot in eggplant because of its availability and eco-friendliness.
Field, greenhouse and laboratory studies were carried out at the Department of Crop Science,
University of Nigeria, Nsukka in order to evaluate the leaf spot disease of eggplant and its
management with some botanicals. Field survey of diseased plants was conducted on
eggplant farm. Solanum aethiopicum L. plants were sampled on every 1 m distance along the
diagonal transects for disease incidence and severity. Pathogen isolation from severely
infected leaves was carried out in the laboratory where the diseased leaves were plated on
fresh Potato Dextrose Agar. Identification of the isolated fungi was carried out with the aid of
identification scheme based on their cultural characteristics. Nursery preparation for raising
eggplants used in the green house was also carried out on a sterilized soil. The five most
abundant pathogens isolated were inoculated separately on the seedlings of eggplant in five
replicates.
The experiment was arranged in a completely randomized design. Phytochemical
contents of the four plant extracts were determined in the laboratory. An in vitro control of the
organism responsible for the leaf spots was carried out using plant extracts at 0.030 g/ml,
0.060 g/ml, and 0.120 g/ml and 0.250 g/ml concentrations. The experimental design was a
9x4 factorial in a completely randomized design (CRD). The data were analyzed using
analysis of variance (ANOVA). Means were later separated using Fisher’s least significant
difference (F-LSD). Helminthosporium infestans Dur. & Mont, Cladophialophora carrionii
Trejos, Aspergillus niger van Tieghem, Rhizopus nigricans Ehrenb and Neurospora africana
Huang & Backus were isolated from the diseased eggplant leaves. H. infestans recorded the
highest percentage frequency (61.11 %) while A.
niger had the lowest percentage frequency
(5.56 %). H. infestans was pathogenic to eggplant seedlings. The Koch postulate test
confirmed H. infestans as the causal organism of the spots symptoms. The qualitative
phytochemical analysis on the test plants revealed the presence of tannin, soluble
carbohydrate, hydrogen cyanide, steroids, flavonoids, alkaloids as well as glucosides in all
the extracts analyzed. The effect of ethanolic extracts of the test plants significantly (Preduced the incidence and severity of the pathogen. Anti-fungal activity of seed extracts of G.
kola on H. infestans was highest at 0.0120 g/ml concentrations. G. kola could be used as
fungicide to manage leaf spot in eggplant because of its availability and eco-friendliness.
This material content is developed to serve as a GUIDE for students to conduct academic research
Find What You Want By Category:
Delivery: Within 24 hours
Advertise Here
For advertisement, call 08168958821
Not what you were looking for? Perform a search
What's your project topic?
Comment on Facebook:
Related Project Materials
- 1.
ASSESSMENT OF INDIGENOUS FARMERS PERCEPTION OF CLIMATE CHANGE IN NORTH CENTRAL PART OF NIGERIA
CHAPTER ONE INTRODUCTION 1.1 Background of the Study One of the continents most susceptible to both climate variability and change is Africa. Farme...More »
Item Type: Project Material | 54 pages | 551 engagements |
- 2.
THE IMPACT OF AGRICULTURAL POLICIES ON NIGERIAN ECONOMY
THE IMPACT OF AGRICULTURAL POLICIES ON NIGERIAN ECONOMY CHAPTER ONE INTRODUCTION 1.1 Background to the Problem Agriculture in the context of the eco...More »
Item Type: Project Material | 55 pages | 0 engagements |
- 3.
THE IMPACT OF AGRICULTURAL DEVELOPMENT PROGRAMMES ON THE ECONOMY
THE IMPACT OF AGRICULTURAL DEVELOPMENT PROGRAMMES ON THE ECONOMY CHAPTER ONE INTRODUCTION 1.1 Background of the Study Agriculture is the foundation an...More »
Item Type: Project Material | 60 pages | 0 engagements |
- 4.
THE EFFECT OF MONETARY POLICY ON AGRICULTUTRAL OUTPUT IN NIGERIA
THE EFFECT OF MONETARY POLICY ON AGRICULTUTRAL OUTPUT IN NIGERIA CHAPTER ONE INTRODUCTION 1.1 Background of the Study The...More »
Item Type: Project Material | 55 pages | 1,609 engagements |
- 5.
THE ECONOMIC PROBLEMS OF CASSAVA PRODUCTION
THE ECONOMIC PROBLEMS OF CASSAVA PRODUCTION CHAPTER ONE INTRODUCTION 1.1 Background of the study This study is aimed at finding out the c...More »
Item Type: Project Material | 50 pages | 0 engagements |
- 6.
THE CONTRIBUTION OF AGRICULTURE COOPERATIVE SOCIETIES TO FOOD PRODUCTION (A Case Study Selected Agr...
THE CONTRIBUTION OF AGRICULTURE COOPERATIVE SOCIETIES TO FOOD PRODUCTION (A Case Study Selected Agricultural Cooperative Societies In Enugu North Lo...More »
Item Type: Project Material | 55 pages | 1,696 engagements |