Performance Evaluation of Nutrient Dense Potato Genotypes at High Hills of Karnali Province, Nepal

Abstract

The trial was carried out to identify suitable potato genotypes for high hills of Karnali province of Nepal. The genotypes were received from International Potato Centre (CIP), Lima, Peru through National Potato Research Program (NPRP) and evaluated for two consecutive years 2017 and 2018 at Horticulture Research Station (HRS), Rajikot, Jumla, Nepal (2396 masl). Nine nutrient dense potato genotypes with two checks i.e. Desiree and Jumli Local in on-station trial were tested in Randomized Complete Block Design (RCBD) with three replications. Fertilizer was used at the rate of 100:100:60 kg NPK/ha and 20 t/ha compost. Well sprouted tubers of seed size (25-50 g) were planted at a spacing of 60cm x 25cm. The effects of different genotypes were recorded for both vegetative as well as yield parameters. There is a significant difference among tested genotypes for vegetative (emergence percentage at 30 days after planting & 45 days after planting, uniformity, ground coverage, plant height, number of main stems) as well as yield parameters (total number of tubers and tuber yield per ha). The highest tuber yield (46.93 t/ha) was recorded from genotype T 304351.109 followed by genotype T 304368.46 (41.46 t/ha) and genotype T 302498.7 (32.69 t/ha) among the nutrient dense potato genotypes. Similarly, late blight scoring was minimum (score 1) in all these three genotypes. The results of both years showed that potato genotypes T 304351.109, T 304368.46 and T 302498.7 are promising for cultivation in high hills of Karnali province to combat the malnutrition as well as ensure nutritional security.

Performance of Potato Genotypes at Farmer’s Field in Jumla, Nepal

“…However, insect damage percentage was maximum (1.83%) in genotype Jumli local and minimum (1.17%) in genotype CIP 395112.32 (Table 4). Similar type of observation was observed by some researchers [19] in the potato varieties in Jumla.…”

“…3). The variation in plant uniformity of different genotypes of potato was reported by previous researchers also [21][22][23].…”

“…Statistically significant difference was observed among the tested potato genotypes for ground coverage at six weeks of DAP Maximum ground coverage (56.67%) was recorded in CIP 390478.9 which was at a par with CIP 394611.112 (52.5%) and CIP393073.179 (50%) whereas the lowest (39.17%) ground coverage was in Desiree which was at a par with CIP 392222.25 (44.17%), CIP 395112.32 (45%) (Table3). Different genotypes differ genetically in their growth habit [19,20].…”

On-farm Evaluation of Potato Genotypes at High Hills of Karnali Province, Nepal

“…Insect damage percentage was maximum (3%) in genotype Jumli local followed by Desiree (2.75%), and CIP 393617.1 (2.63%) whereas minimum (1.87%) in genotype CIP 395077.242 (Table 5). Similar types of insect pests and their damage has been reported by some researchers in Jumla [27]. Occurrence of late blight was maximum (5.25) in Jumli local followed by Desiree (3.75) whereas minimum (1.25) in PRP 226567.2 and PRP 136769.1 (1.25).…”

“…Highly uniform (4.88) plants were observed in PRP 226567.2 followed by Desiree (4.37), PRP 136769.1 (4.25) and CIP 393617.1 (4.25) whereas the least uniform (3.25) plants were observed in Jumli local (Table 4). Similar type of significant variation was studied by some researchers [25,26].…”