dc.contributor.author | Sikinyi, EO | |
dc.date.accessioned | 2013-05-27T12:42:53Z | |
dc.date.available | 2013-05-27T12:42:53Z | |
dc.date.issued | 1987 | |
dc.identifier.citation | A thesis submitted in partial fulfilment for the degree of master of science in the University of Nairobi. | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/26252 | |
dc.description.abstract | Pigeonpea (Cajanus cajan L. Millsp) is an important pulse crop
in the semi-arid areas in Kenya because of its drought tolerance, wide
adaptability and as a source of protein. Low grain yields have been partly
attributed to low soil fertility, non-availability and the high cost of chemical
fertilizers. A study was initiated to determine if there was genotypic
differences in nitrogen fixation ability by local and exotic pigeonpea
genotypes, and to determine the response of the genotypes to inoculation
with various Rhizobia strains. Fifteen pigeonpea genotypes from three
maturity groups were inoculated with five Rhizobia strains, and grown in
soils with and without phosphate fertilizer application at four locations in
1984and 1985in Kenya. The experimental design for all experiments was a
split plot with three replications. The results indicated that inoculation
increased the number of primary branches, reduced duration to flowering
and maturity, increased nodulation and grain yield. Inoculation increased
xxi
plant height in late maturing genotypes but reduced it in the medium and
early maturing genotypes. Significant genotype x inoculation interactions
was detected for the number of primary branches, nodules per plant and
IOO-seed weight at Thika. The results also indicated that response to
Rhizobium strain is genotype specific and that Rhizobia strains differ in
effectiveness in fixing atmospheric nitrogen. Native Rhizobia proved to be
more effective on particular pigeonpea genotypes. | en |
dc.language.iso | en | en |
dc.title | Studies on genotypic variation in biological nitrogen fixation in pigeonpea (cajanus Cajan L. millsp) inoculated by various rhizobia strains and phosphate fertilizer application in kenya | en |
dc.type | Thesis | en |
local.publisher | Plant Science & Crop Protection, University of Nairobi | en |