S. Ahamad, A. Srivastava, M.D. Sharma, S.C. Shah
samid_786@rediffmail.com

DOI

ABSTRACT

The experiment was carried out during the winter season of two consecutive years (2013/14 and 2014/15) at Regional Agriculture Research Station (RARS), Khajura, Banke in Mid-Western Development Region of Nepal. Experiment was laid out in a split-plot design with three replications. Main-plot consisted of three moisture conditions namely Irrigated, Mulched and Rain-fed, whereas subplot had eight potato genotypes namely LBr-40, NPI-106, CIP388676.1, CIP396011.47, CIP395192.1, Cardinal, Desiree and Tharu Local. The two years mean data were considered. Significantly the highest emergence percent (97.1%) was obtained from Irrigated condition and the lowest emergence (84.3%) from Rain-fed condition. Significantly the highest emergence percent (95.5%) was obtained from the genotype Cardinal followed by NPI-106 (94.6%), CIP388676.1 (94.4%) and Tharu Local (90.6%) which were at par. The lowest late blight severity score (4.0) was from Mulched condition and the highest score (4.7) was from Irrigated condition. Significantly the lowest late blight severity score (1.0) was from the genotypes LBr-40, whereas the highest score (5.3) was from the genotype CIP395192.1. Significantly the highest yield (17.6 t ha-1) was from Irrigated condition followed by Mulched condition (15.7 t ha-1) whereas the minimum yield (10.7 t ha-1) was from Rain-fed condition. Significantly the maximum yield (23.2 t ha-1) was from the genotype CIP388676.1 and the minimum yield (3.7 t ha-1) was from Tharu Local. Keeping in view the yield parameters and late blight resistance the genotypes CIP 388676.1 and LBr-40 were found superior to other genotypes under the Irrigated, Mulched and Rain-fed conditions. However among the three moisture conditions Irrigated and Mulched conditions were superior to Rain-fed condition for potato cultivation in the mid-western terai of Nepal.