The influence of priming methods, planting dates, and weed interference levels on the vegetative growth, yield, and yield components of AS71 hybrid corn

Trends in Horticulture Pub Date : 2023-11-28 DOI:10.24294/th.v6i2.2994

Soad Amiri, S. Kazemeini, R. Zangoueinejad

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Abstract

By carrying out a laboratory experiment, the influence of priming methods, including ZnSO4, BSN, and hydropriming was evaluated on the seed germination of hybrid AS71 corn. Then, the main and interaction effects of the priming methods, planting dates, and weed interference levels were surveyed on the vegetative growth traits, yield, and yield components of corn in a field experiment. Based on the lab experiment, although the maximum germination percentage (100%) was observed in the treated plots by hydropriming 22 h after treatment (HAT), the greatest seedling vigor index (122.99) was recorded with treated seeds by ZnSO4 (0.03 mg L–1) at 8 HAT. The greatest emergence index was observed in the treated plots by hydropriming on both planting dates of June 1 and 11. The interaction of planting dates and weed interference levels revealed that the highest emergence index (14%–17%) occurred in the weed-free plots on both planting dates. BSN recorded the greatest corn 1000-grain weight that was significantly higher than the control plots by 28%. Furthermore, BSN enhanced the corn grain yield compared with the control plots by 63% and 24.9% on the planting dates of June 1 and 11, respectively. BSN, as a nutri-priming approach, by displaying the highest positive effects in boosting the corn grain yield in both weedy and weed-free plots as well as both planting dates, could be a recommendable option for growers to improve the crop yield production.

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打底方法、播种日期和杂草干扰水平对 AS71 杂交玉米的无性生长、产量和产量成分的影响

通过实验室实验，评估了硫酸锌、BSN 和水刺等催芽方法对杂交种 AS71 玉米种子萌发的影响。然后，在田间试验中调查了催芽方法、播种日期和杂草干扰水平对玉米无性生长性状、产量和产量成分的主效应和交互效应。根据实验室实验，虽然在处理后 22 小时（HAT）用水力催芽法处理的地块发芽率最高（100%），但在处理后 8 小时（HAT）用 ZnSO4（0.03 mg L-1）处理的种子的幼苗活力指数最高（122.99）。在 6 月 1 日和 11 日这两个播种日期，水刺处理的地块出苗指数最大。种植日期和杂草干扰水平的交互作用表明，在两个种植日期，无杂草地块的出苗指数最高（14%-17%）。BSN 记录的玉米千粒重最高，比对照地显著高出 28%。此外，在 6 月 1 日和 11 日的播种期，BSN 还能使玉米籽粒产量比对照地块分别提高 63% 和 24.9%。作为一种营养先导方法，BSN 在杂草地和无杂草地以及两个播种日期都能对提高玉米籽粒产量产生最大的积极影响，是种植者提高作物产量的一个值得推荐的选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Trends in Horticulture

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