Phakamas, Nittaya

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Preferred name
Phakamas, Nittaya
Alternative Name
Phakamas, N.
Main Affiliation
Email
nittaya.ph@kmitl.ac.th

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    Item type:Publication,
    Effects of urea and sunn hemp on nitrogen use efficiency and physiological traits related to Japonica rice yield
    (2023-05-01)
    Khemtong, J.
    ;
    Phakamas, N.
    ;
    Somchit, P.
    Application of sunn hemp as a sole fertilizer could provide nitrogen use efficiency (NUE), tiller number, leaf area index (LAI), crop growth rate (CGR), biomass and grain yield higher than application of urea as a sole fertilizer. Correlation coefficients (r) among some physiological traits including LAI, CGR, NUE, NUE for grain yield (NUEg) and agronomic traits consisting of tiller number, biomass and grain yield were significantly positive resulted which ranged between 0.65 and 1.00. The results indicated that application of sunn hemp as green manure can promote growth and yield of Japonica rice and tend to be a good choice for supplying nitrogen in Japonica rice production.
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    Effects of chicken manure and chemical fertilizer on Growth and Yield of Japonica Rice
    (2022-01-01)
    Phopaijit, S.
    ;
    Suraphonphinit, A.
    ;
    Phakamas, N.
    Organic and inorganic nitrogen fertilizers are normally used in Indica rice (Oryza sativa L.) production system, but information on the effects of chicken manure on Japonica rice is limited. The effects of chicken manure and chemical fertilizers on growth and yield of Japonica rice were determined. Rice varieties were significantly different for most traits including plant height, crop growth rate (CGR), biomass, percentage of filled and unfilled grain, number of grains per spikelet and harvest index (HI), except for grain yield. Chemical fertilizer had the highest grain yield followed by chicken manure, non-treated control and chemical fertilizer together with chicken manure, respectively. The interaction effects between fertilizer treatment and rice variety were not significant for all characters. These rice varieties seemed to better respond to chemical fertilizer than chicken manure treatments.