Performance of Single Cross Maize (Zea mays L.) Hybrids under Rainfed Middle Hill Environments of Nepal

Keshab Babu Koirala1,* , Subash Subedi1, Mahendra Prasad Tripathi1

DOI: 10.29252/azarinj.035




Maize is the livelihood of smallholder farmers and priority food crop in the middle hills of Nepal. To achieve maize self-sufficiency in the country we need to shift from open-pollinated varieties to hybrids in potential pockets of middle hills. Coordinated varietal trials on hybrids were conducted for three consecutive years from 2016/17 to 2018/19 across the middle hills during summer to identify high-yielding, biotic and abiotic stresses resistant/tolerant single crosses that fit into the existing rainfed cropping system. We evaluated fifteen, nine, and ten genotypes in 2016/17, 2017/18, and 2018/19, respectively. Trials were replicated thrice using a randomized complete block design with a unit plot size of four rows of 4-m long. Based on acceptable grain yield, anthesis to the silking interval, ear position, and Turcicum leaf blight (TLB) and Grey leaf spot (GLS) reaction, CAH1715 (9.12 t ha-1), RML-4/RL-111(8.72 t ha-1), RML-98/RL-105 (8.25 t ha-1), RL-150/RL-111 (8.18 t ha-1), RL-36/RL-105 (8.04 t ha-1), CAH1521 (7.67 t ha-1) and Rampur Hybrid-10 (7.65 t ha-1) were identified promising. These genotypes will be promoted to farmers’ field trials and other participatory variety selection activities.

Keywords: Anthesis-silking interval, Hybrid, Multi-national company hybrid, Single cross



Adhikari J. (2014) Seed Sovereignty: Analysing the Debate on Hybrid Seeds and GMOs and Bringing About Sustainability in Agricultural Development. Journal of Forest and Livelihood, 12(1): 33–46.

Bhattarai T.C. (2020) Nepalese poultry industries: Current scenario and future strategies.

CIMMYT. (1985) Managing trials and reporting data for CIMMYT international maize testing program. CIMMYT Mexico.

FAO. (2009) Country profile. Retrieved in 15 August 2013.

Gyenes Hegyi Z.   Pók I.  Kizmus L. (2002) Plant height and height of the main ear in maize ( Zea mays L.) at different locations and different plant densities. Acta Agronomica Hungarica 50(1): 75-84. DOI: 10.1556/AAgr.50.2002.1.9

Ghimire Y.N. Timsina K.P. Devkota D. Gautam S. Choudhary D. Poudel H. Pant J. (2018) Dynamics of maize consumption and its implication in maize technology demand in Nepal. In: B.M. Prasanna, Aparna Das, and Kelah K. Kaimenyi (eds.), 2018. Book of Extended Summaries, 13th Asian Maize Conference, and Expert Consultation on Maize for Food, Feed, Nutrition, and Environmental Security. Ludhiana, India, October 8-10, 2018. CIMMYT, Mexico D.F. p.184-190.

Kandel B.P. Adhikari N.R. Poudel A. Tripathi M.P. (2019) Genetic variability estimates of hybrid maize genotypes in inner terai of Nepal. Azarian Journal of Agriculture, 6(6): 164-170.

Kathmandu Post. (2020) Nepal launches domestically developed hybrid maize variety.

Koirala K.B. (2020) Maize research for food, feed, and nutritional security in Nepal. Bhandari D. Upreti H.K. Shrestha R. Tripathi J.J. Shrestha H.K. Mishra K.K. Joshi B.K. Ansari A.R. Tripathi B.P. Badya S. Shrestha J. Tripathi M. Paneru P. (eds.), Proceedings of the 29th Summer Crops Workshop 17-18 June 2018, Regional Agricultural Research Station, Lumle, Kaski, Nepal. Nepal Agricultural Research Council, p.7-19.

Koirala K.B. (2017) Up-scaling of proven technology for maize improvement through participatory approach in Nepal. In: Pandey P.R. Koirala K.B. (eds.), Best practices of maize production technologies in South Asia, SAARC Agriculture Centre, Dhaka, p.61-95.

Knoema. (2019a) Nepal – Maize imports. World Data Atlas.

Knoema. (2019b) Nepal – Maize imports. World Data Atlas.

Lizaso J. Ruiz-Ramos M. Rodriguez L. Gabaldon-Leal C. Oliveira J.  Lorite I. Sánchez D. García E. Rodriguez A. (2018) Impact of high temperatures in maize: Phenology and yield components. Field Crops Research, 216: 129–140.

Memoire A. (2017) Implementation support review.  Nepal: Agriculture and food security project (TF13719).  June 12-17, 2017.

MoALD. (2020) Statistical Information on Nepalese Agriculture 2075/76 (2018/19). Singha Durbar, Kathmandu Nepal, Ministry of Agriculture and Livestock Development, Agri-Business Promotion and Statistics Division.

MoALD. (2018) Statistical Information on Nepalese Agriculture 2073/74 (2016/17). Singha Durbar, Kathmandu Nepal, Ministry of Agriculture and Livestock Development, Agri-Business Promotion and Statistics Division, 290p.

MoF. (2019) Annual Foreign Trade Statistics, 2075/76 (2018/19).

NMRP. 2014. Annual Report 2013/14. National Maize Research Program, Nepal Agricultural Research Council, Rampur, Chitwan.

Panday D. (2019) December 26 Future of maize: Introduce hybrid varieties. The Himalayan timesl file:///C:/Users/dell/Desktop/Publication/2.%20Articles%20in%20progress/Climate%20change%20in%20Nepal/Future%20of%20maize_%20Introduce%20hybrid%20varieties.html

Paudyal K.R. Ransom J.K. Rajbhandari N.P. Adhikari K. Gerpacio R.V. Pingali P.L. (2001) Maize in Nepal: Production systems, constraints, and priorities for research. Kathmandu: NARC and CIMMYT, 48p.

Sharma H.P. Dhakal K.H. Kharel R. Shrestha J. (2016) Estimation of heterosis in yield and yield attributing traits in single cross hybrids of maize. Journal of Maize Research and Development, 2(1): 123–132.

SQCC. (2013) National Seed Vision 2013 – 2025 (Seed sector development strategy). Government of Nepal. Ministry of Agricultural Development. National Seed Board. Seed Quality Control Centre, Hariharbhawan, Lalitpur, Nepal. 87p.

Ranum P. Pena-Rosas J.P. Garsia-Casal M.N. (2014). Global maize production, utilization, and consumption. Annals of the New York Academy of Sciences 1312 (2014) 105–112. DOI: 10.1111/nyas.12396

Struik P. Doorgeest M. Boonman J. (1986) Environmental effects on flowering characteristics and kernel set of maize (Zea mays L.). Netherlands Journal of Agricultural Science, 34(4): 469–484.

Subedi S. (2015) A review on important maize diseases and their management in Nepal. Journal of Maize Research and Development, 1(1): 28-52.

Thapa M. (2013) Regulatory framework of GMOs and hybrid seeds in Nepal. Agronomy Journal of Nepal, 3: 128–137.

Thapa S.B. Kandel B.P. (2019) Performance of hybrid maize (Zea mays L.) influenced by planting density. Azarian Journal of Agriculture, 6(5): 121-128.  Timsina K.P. Ghimire Y.N. Lamichhane J. (2016) Maize production in mid hills of Nepal: from food to feed security. Journal of Maize Research and Development, 2(1): 20–29.

Tripathi K.K. Warrior R. Govila O.P. Ahuja V. (2011) Biology of Zea mays (Maize). Series of Crop Specific Biology documents. Department of Biotechnology, Ministry of Science and Technology and Ministry of Environment and Forests, India. 30p.

Upadhyay N.D. Timsina K.P. Gairhe S. Sapkota S. Acharya Y. Khadka S. (2017) Growth of livestock sector in Nepal: A perspective on agriculture perspective plan, Proceeding of the 10th National Workshop on Livestock and Fisheries Research in Nepal 5-7 March 2017.

Zsuzsanna Z. Gyenes-Hegyi Z. Illés O. Pók I. Rácz F. Szőke C. (2002) Inheritance of plant and ear height in maize (Zea Mays L.).  Agricultural Research Institute of the Hungarian Academy of Sciences, Martonvásár. p.1-5. DOI: 10.34101/actaagrar/8/3548