Farmers' Participatory Evaluation of Potato Genotypes to Late Blight under Different Agro Climatic Conditions of Nepal

Buddhi P. Sharma1, Hari B. Khatri-Chhetri2, Birendra B. Rana1, Surendra L. Shrestha3
Yamuna P. Shah4 and Khem R. Sharma5

1National Potato Research Programme
2Entomology Division
3Regional Agriculture Research Station, Parawanipur
4Agriculture Research Station, Belachapi
5Agriculture Research Station, Dailekh
 

Abstract

Farmers' participatory multi location field experiments were conducted in 2011/12 with the objectives of evaluating late blight disease [Phytophthora infestans (Mont) de Barry] resistant and high yielding potato genotypes. Twenty two promising potato genotypes which have been selected through the series of experiments since 2006, were tested in farmers' fields at Dhikure (Nuwakot), Parwanipur (Bara), Belachapi (Dhanusa), Sonpur (Dang) and Kimugaun (Dailekh) involving two to four farmers in each location. A farmer's field trial (FFT) set per farmer, composed of 6-15 genotypes, were planted in the plot size ranging from 3 to 6 m2 during the respective potato planting season. Potato cultivars Desiree and Kufri Sindhuri in Bara, Lalgulab in Dhanusa, MS-42.3 and Cardinal in Nuwakot and Tharu Local in Dang were used as check to compare with test genotypes. Fungicide against any disease was not sprayed throughout the crop period. Late blight severity as foliage damage % was recorded at 70-75 days after planting. Crop was harvested at 90-110 days after planting depending on the location and farmers decision. Genotype PRP- 266264.01 produced the higher tuber yield (46.67 t/ha) followed by PRP- 266264.15 (41.67 t/ha) in Dang, Lbr- 40 (37.17 t/ha) and CIP- 384321.15 (31.83 t/ha) in Nuwakot, PRP- 266264.15 (17.9 t/ha) in Dhanusa, PRP- 25861.1 (26.37 t/ha) and PRP 266264.01 (22.66 t/ha) in Parwanipur, BSUPO3 (47.05 t/ha) and PRP- 266264.01 (44.33 t/ha) in Dailekh. Tuber yields of these genotypes were significantly higher as compared to the yields of respective local check cultivars ranging from 2.8 to 13.33 t/ha.

Keywords: late blight,participatory,potato cultivars,tuber yield

Published Year
2013

Volume
Proceeding Volume 8

Issue