Agronomic manipulations of seed and fertilizers in potato (Solanum tuberosum) crop grown in acidic soils of Meghalaya
DOI:
https://doi.org/10.59797/ija.v44i1.3483Keywords:
Seed fate, Fertility level, Tuber yield, Tuber size, Net returnAbstract
A field trial was conducted during summer season (March-July) of 1992-94 at Upper Shillong to find out suitable and economical combinations of seed rates and fertility levels. Significant increase in tuber yield was recorded up to medium fertility levels (100 : 120 : 50). Further increase in fertility level (150 : 180 : 75) gave only 5.2% more tuber yield. Significant increase in tuber yield was obtained up to 30 q seedlha. Seed rate increased up to 35 qlha gave only 3.8% more yield. The inverse relationship was observed between seed rates and multiplication rate. Increase in seed rates decreased the multiplication rate. It was 10.4, 8.5, 7.4, 6.5 and 5.8 times with seed rate of 15, 20, 25, 30 and 35 qlha respectively. The production of large (> 80 g) and medium (20-80 g) size tubers was significantly increased up to medium fertility level where as seed rate had significant impact only on the production of medium size tubers. The highest tuber yield (221.8 qlha) was obtained when 35 q seedlha was grown at higher (150 : 180 : 75) fertility level and gave tuber production in the ration of 25 : 58 : 17 of large, medium and small size tubers respectively. But higher net return was obtained when 25 q seedlha was supplemented with medium (100 : 120 : 50) fertility level.References
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