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Effects of maleic hydrazide on yield and storage of potatoes in West Bengal

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Summary

  1. 1.

    Royal Kidney and Up-to-date varieties were sprayed with 2,000, 3,000, 4,000 and 5,000 ppm of Maleic hydrazide (MH 40) 80 and 90 days after planting.

  2. 2.

    Potatoes sprayed with 5,000 ppm MH 40 produced an insignificantly higher yield than the control or other concentrations of MH.

  3. 3.

    Weight loss of Royal Kidney decreased during 7 months at 80–90 F storage as the concentration of MH was increased, whereas with Up-to-date, weight loss increased as concentration of MH increased.

  4. 4.

    Time of application, 80 and 90 days after planting, had no significant effect on yield but weight losses in storage were less when sprayed 90 days after planting.

  5. 5.

    Weight loss under refrigerated storage (55 F) were much lower for all treatments including controls than under unrefrigerated storage.

  6. 6.

    Under refrigerated storage weight losses in Royal Kidney increased slightly as MH concentration was increased, whereas, in Up-to-date weight losses decreased slightly as MH concentration increased.

  7. 7.

    MH sprays, 2000 to 5000 ppm applied 80 and 90 days after planting had no adverse effect on tuber shape.

Resumen

  1. 1.

    Las variedades Royal Kidney y Up-to-date fueron rociadas con 2,000, 3,000, 4,000 y 5000 ppm de HNCOCH:CHCONH (Maleic hydrazide (MH 40), a los 80 y 90 días después de sembradas.

  2. 2.

    Papas rociadas con 5000 ppm de MH 40 produjeron rendimientos insignificantemente mayores, que los obtenidos con el control o con otras concentraciones de MH.

  3. 3.

    La pérdida de peso de Royal Kidney durante 7 meses de almacenamiento a 80–90 F, disminuyó a medida que la concentración de MH era aumentada; mientras que con Up-to-date, la pérdida de peso aumentó, a medida que la concentración de MH aumentaba.

  4. 4.

    El tiempo de aplicación, a los 80 y 90 días después de sembradas, no tuvo ningún efecto signigicante en el rendimiento, pero las pérdidas de peso durante el almacenamiento fueron menores cuando rociadas a los 90 días despues de sembradas.

  5. 5.

    Las pérdidas de peso bajo almacenamiento refrigerado (55 F) fueron mucho menores que bajo almacenamiento no refrigerado, para todos los tratamientos incluyendo los controles.

  6. 6.

    Bajo almacenamiento refrigerado, las pérdidas de peso en Royal Kidney aumentaron ligeramente a medida que la concentración de MH fue aumentada, mientras que en Up-to-date, las pérdidas de peso, disminuyeron ligeramente a medida que las concentraciones de MH aumentaron.

  7. 7.

    Las rociadas de MH de 2000 a 5000 ppm aplicadas a los 80 y 90 dias después de sembradas, no tuvieron ningún efecto desfavorable en la fórma de los tubérculos.

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Literature Cited

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Potatoes and Crop Research, Department of Agriculture, West Bengal, Calcutta, India.

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Choudhuri, H.C. Effects of maleic hydrazide on yield and storage of potatoes in West Bengal. American Potato Journal 44, 123–127 (1967). https://doi.org/10.1007/BF02862910

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