Performance of Promising Potato Genotypes in Red Ant (Dorylus orientalis) Management

Asian Journal of Advances in Agricultural Research Pub Date : 2023-04-11 DOI:10.9734/ajaar/2023/v21i4423

J. Gautam, Dipendra Ghimire, Ashmita Gadal

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Abstract

This experiment was carried out to identify appropriate potato genotypes for red ant management and increase the tuber yield of potato during 2020 and 2021 years. Eight different promising potato genotypes [1. PRP-056267.9 2. PRP-85861.11 3. CIP-394311.112 4. PRP-136368.1 5. PRP-22627.1 6. PRP-296668.1 7. Janakdev (standard check) and 8. Ilam local (Bite)] received from National Potato Research Program (NPRP), Khumaltar, Lalitpur, Nepal were included in the study. Experiment was conducted in previously red ant infected potato field in Completely Randomized Block Design with three replications. The experimental plot size was 5.4 m2 (3m x 1.8m) where planting tubers was done at 60 cm row to row and 25 cm plants to plant spacing. Fertilizers of NPK were applied at the rate of 100:100:60 kg /ha and 20 t/ha compost. Well sprouted tubers with weight 30-40 g were planted during the second week of February. Harvesting was done during the last week of July. Data on yield attributing traits, late blight disease, and number of red ant damaged tubers, red ant infested yield and healthy tuber yield were recorded. The standard check potato variety Janakdev (1.00 red ant score, 2.32 – 2.36 % red ant incidence percentage and 0.66 – 0. 71 t/ha red ant infected tuber yield ), PRP-056267.9 (1.00 red ant score, 4.51 – 5.10 % red ant incidence percentage and 0.56 – 0. 67 t/ha red ant infected tuber yield ) and PRP-85861.11 (1.00 red ant score, 4.55 – 5.47 % red ant incidence percentage and 0.76 – 0. 86 t/ha red ant infected tuber yield ) were found tolerant to red ant infestation and produced the highest tuber yield (27.74 t/ha – 28.62 t /ha by Janakdev variety followed by 21.79 - 22.26 t/ha by PRP-056267.9 and 21.09 - 21.05 t/ha by PRP-85861.11 potato genotypes). Therefore, planting of Janakdev variety as well as PRP-056267.9 and PRP-85861.11 potato genotypes is appropriate for higher potato tuber yield and lower down red ant incidence at Jaubari area.

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马铃薯基因型在红蚁管理中的应用研究

本试验旨在鉴定适宜红蚁管理的马铃薯基因型，提高马铃薯在2020年和2021年的块茎产量。8种不同的有发展前景的马铃薯基因型[1]。prp - 056267.9 - 2。prp - 85861.11 - 3。cip - 394311.112 - 4。prp - 136368.1 5。prp - 22627.1 6。prp 7 - 296668.1。Janakdev(标准检查)和8。来自尼泊尔国家马铃薯研究计划(NPRP)、Khumaltar、Lalitpur的Ilam local (Bite)]被纳入研究。试验采用完全随机区组设计，在红蚁侵染过的马铃薯田进行3个重复试验。试验田面积为5.4 m2 (3m x 1.8m)，块茎种植间距为60 cm，株距为25 cm。氮磷钾的施用比例为100:100:60 kg /ha，堆肥20 t/ha。块茎发芽良好，重30-40克，于2月第二周种植。收割工作在7月的最后一周进行。记录了产量性状、晚疫病、红蚁害块茎数量、红蚁侵染产量和健康块茎产量。标准检查马铃薯品种Janakdev(1.00)红蚁评分，红蚁发生率为2.32 ~ 2.36%，红蚁发生率为0.66 ~ 0.0%。红蚁侵染块茎产量为71 t/ha)， PRP-056267.9(1.00红蚁评分，4.51 ~ 5.10%红蚁发病率，0.56 ~ 0。7 t/ha红蚁侵染块茎产量)，PRP-85861.11(红蚁评分1.00，红蚁发病率4.55 ~ 5.47%，红蚁发病率0.76 ~ 0.0%)。马铃薯品种Janakdev的块茎产量最高(27.74 t/ha ~ 28.62 t/ha)， PRP-056267.9和PRP-85861.11分别为21.79 ~ 22.26 t/ha和21.09 ~ 21.05 t/ha)。因此，种植Janakdev品种以及PRP-056267.9和PRP-85861.11马铃薯基因型，可以提高马铃薯块茎产量，降低红蚁发生率。

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Asian Journal of Advances in Agricultural Research

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