future harv/est - Search CIMMYT repository

540 K. Adhikari, K.B. Koirala and M. SubediSome recent promising materials, both full season and early types. suitable for various growingregions are listed below (Figures in parenthesis indicate the yield potential of the genotypes).Full season genotypes for terai: Across 9223, tropical (7691 kgfha); Pirsabak 9223 (7075kg/ha); Porto Veijo 9330 (7501 kgfha); Guiyank 9223 (6997 kgfha); Across 9330 (6925 kgfha);Narayani (4799 kgfha); Upahar (3717 kgfha); Suwan 822 RE (3066 kgfha); Farako Ba (8625 kgfha);Suwan 8528 (3329 kgfha); Lodana 8929 (2695 kgfha)Full season genotypes for the hills: Madi local; Arun 6; Rampur 4; Tlaltizapan 8644;Manakamana-IEarly genotype for terai: EV-95 G 15E, tropical; S95 G 15; Dati local-2 and 3Promising genotypes under improvement process for hills: BA 9312126 # 2, subtropical; Pop. 22C9 (RR 92A004. subtropical; Pool 21 PR 9A-224-4), subtropical; Tlaltizapan 8644, subtropicalStudies on pop, sweet and baby cornResearch on popcorn, sweetcorn and baby corn has been carried out at Rampur, and thefollowing genotypes were identified as promising (Adhikari, 1996).Bab}' corn: RAM # L RAM # 3 and RAM # 4Pop Corn: Pop Corn Takfa, Yousofwala, Pop A (s) CI, and Pop 20 (s) ClSweet Corn: Masmadhu, Colombia White Super Sweet, Sweet Corn Group ABC, CarmenSweet, and Machuria SweetHybrid maize development programHybrid program of NMRP is specially focused on developing hybrid maize varieties for low hilland Terai regions, where inherent soil fertility is higher, provision of irrigation and access toimproved production inputs are available. The hybrid program aimed to fulfil the increasing demandof maize by feed industries through increasing production and productivity. A total of 35 singlecrosses have been developed at NMRP, Rampur, which were tested against existing Indian hybridsand Rampur Composite (standard OPV) at RARS, Parwanipur.2. Crop ProductivityMost of the agronomic research is included in a companion paper by Subedi et aI., titled "Maizebased cropping system in the hills of Nepal: Issues and challenges for sustinable crop production".However, a couple of items are discussed.Evaluation of OPVs for baby corn productionEvaluation of OPVs for baby corn production (Adhikari, 1996) in summer and winter season of1996 under two level of plant densities indicated that:Total edible baby ear shoot yield was higher in winter than in summer at Rampur, Chitwan(Inner Terai / Siwalik valley).The varieties RAM-I, RAM-3 and RAM-4 were found superior OPVs for baby corn productionin summer as well as in winter.High plant density (130,000 plantfha) produced high edible ear baby shoot irrespective ofvariety.Baby corn production economics revealed that it is a cost effective farming enterprise with thecost benefit ratio of I: 1.85 in summer and 1:2.19 in winter.Maize fingermillet competitionIn the maize/millet relay intercropping system, regardless of maize genotypes, millettransplanted at 60 days after maize sowing (DAMS), did not reduce the maize yield. However, directsowing of millet at 20 DAMS and transplanting at 30 DAMS reduced maize yield significantly. Thelargest land equivalent ratio of I: 1.78 (LER) was obtained with millet transplanted under Ganesh-2at 60 days after maize sowing (Subedi et al., 1995).