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dc.contributor.authorKhemkham Hongphakdyen_US
dc.contributor.authorBenjavan Rerkasemen_US
dc.contributor.authorSansanee Jamjoden_US
dc.identifier.citationJournal of Agriculture 26,4 (Nov 2010) 17-22en_US
dc.descriptionJournal of the Faculty of Agriculture, Chiang Mai University. The journal will be publicized every 4 months (January, May and September), which will focus on Agriculture, Agro-Industry, Veterinary and Biology.en_US
dc.description.abstractThe aim of this study was to select and evaluate F4 progenies under different nitrogen applications. Three composite crosses (CC) were made from populations of local rice variety (Mueang Nga, MGN) crossed with an improved variety (TDK7). F2 to F4 progenies were selected in three N rates (0, 60 and 200 kg N/ha). Evaluation of F4 progenies was conducted in the field experiment in dry season. Results indicated that means grain yield and ranges of segregation of the improved F4 populations increased with N application at N200 but not for N60. Means grain yield for the three CC populations were 21.0, 18.6 and 26.7 g/plant when grown in 0, 60 and 200 treatments, respectively. Selection for the best 20% of each population was made. Selection differential was highest when selected under N200. Selected populations will be evaluated in with and without N applications in the next season.en_US
dc.publisherAgriculture Chiang Mai Universityen_US
dc.subjectSelection differentialen_US
dc.subjectcomposite crossen_US
dc.titleResponse to Rates of Nitrogen Fertilizer Application of F4 Progenies of Composite Crosses Between Local Rice Variety (Mueang Nga) and High Yielding Variety (Thadokkham7) of Lao PDRen_US
dc.title.alternativeการตอบสนองต่ออัตราปุ๋ยไนโตรเจนของประชากรชั่วที่ 4 ของคู่ผสมรวมระหว่างข้าวพันธุ์พื้นเมือง (เมืองงา) และพันธุ์ปรับปรุง (ท่าดอกคำ 7) ของ ส.ป.ป.ลาวen_US
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