EVALUATION OF FOUR INSECTICIDE FORMULATIONS FOR THE MANAGEMENT OF FLOWERING AND POST FLOWERING INSECT PESTS OF COWPEA

Simple item page
dc.contributor.authorOYEWALE, RASHEED OLAKITAN
dc.date.accessioned2015-01-27T10:08:05Z
dc.date.available2015-01-27T10:08:05Z
dc.date.issued2014-07
dc.descriptionA THESIS SUBMITTED TO THE SCHOOL OF POST GRADUATE STUDIES AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN CROP PROTECTION. DEPARTMENT OF CROP PROTECTION FACULTY OF AGRICULTURE, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA. JULY, 2014en_US
dc.description.abstractField trials on evaluation of four insecticide formulations for the management of flowering and post flowering insect pests of cowpea were conducted in two locations (IAR Research Farm Samaru, Zaria, Kaduna State (Lat.11o 111N and 7o 381N) and Wase, in Minjibir local government of Kano State (Lat. 12 100 60.001 and 8 400 0.001 E), under rainfed conditions in the Northern Guinea Savannah and Sudan Savannah of Nigeria respectively. Four insecticide formulations: Chlorpyrifos, Chlorpyrifos plus, Dimethoate and Imidacloprid. There was a standard check (Cyperdicot; 250+30 g a.i./ha) and an untreated control. The treatments were arranged in a randomized complete block design (RCBD) replicated three times. Population of thrips, Megalurothrips sjostedti Tryb, Maruca. vitrata and Clavigralla. tomentosicollis were sampled 24 hours before and after each spray for three weeks between 7.00 and 8.00am. The damage was assessed by counting the number of aborted flowers/plot; seed damage indices (Sdi) was determined by sorting the seed lot from each plot into 3 categories. The results showed that all the four insecticides effectively reduced the population and infestation of insect pests as well as increased the yields compared to untreated control. Most of the insecticides differ significantly from the standard check (Cyperdicot). The various levels (concentrations) 0.5, 1.0 and 1.5 l/ha were similar in their performance in reducing insects’ population and infestation, pod and seed damage. Therefore the lower concentration range of 0.5-1.0 l/ha should be used so as to minimise cost and reduce risk of environmental pollution among other hazards. Application of Imidacloprid at 105 g a. i./ha (1.5 l/ha) with almost hundred per cent reduction was most effective in the control of C. tomentosicollis at both locations compared with other insecticide treatments. While Chlorpyrifos at 240 (0.5 l/ha) and 720 g a.i./ha (1.5l/ha) resulted in the highest number (176.00 and 135.33) of pods produced at Samaru and Wase. Chlorpyrifos at 240 g a.i. / gave highest significant grain yield of cowpea in both locationen_US
dc.identifier.urihttp://hdl.handle.net/123456789/5908
dc.language.isoenen_US
dc.subjectEVALUATION,en_US
dc.subjectINSECTICIDE,en_US
dc.subjectFORMULATIONS,en_US
dc.subjectMANAGEMENT,en_US
dc.subjectFLOWERINGen_US
dc.subjectFLOWERING,en_US
dc.titleEVALUATION OF FOUR INSECTICIDE FORMULATIONS FOR THE MANAGEMENT OF FLOWERING AND POST FLOWERING INSECT PESTS OF COWPEAen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
EVALUATION OF FOUR INSECTICIDE FORMULATIONS FOR THE MANAGEMENT OF FLOWERING AND POST FLOWERING INSECT PESTS OF COWPEA.pdf
Size:
2.33 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.58 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
AGRICULTURE