Abstract

In India, zinc (Zn) is now considered as fourth most important yield limiting nutrient of agricultural crops. Zinc deficiency in Indian soils is likely to increase from 42 to 63% by 2025. Efficacy of zinc nutrition for improving zinc content at different growth stages of rainfed pea-maize sequence in Northwestern Himalaya was carried out for two years (2014–15 and 2015–16) at the experimental farm of Hill Agricultural Research and Extension Center, Bajaura, Kullu (H.P). Four priming levels of Zn (0% ZnSO₄ – water soaking, 1% ZnSO₄, 2% ZnSO₄, and 3% ZnSO₄) and three priming durations (4 , 8 and 12 hr) were compared with basal dose of recommended NPK + ZnSO₄ @ 25 kg ha⁻¹ and farmers’ practice (40% N of RDF + unprimed seed-control). The Zn content of pea (Pisum sativum L.) and maize (Zea mays L.) crop at various growth stages was found maximum due to priming with 3% ZnSO₄ for a period of 12 hr.

摘要

在印度，锌 (Zn) 现在被认为是限制农作物产量的第四大重要养分。到 2025 年，印度土壤中的锌缺乏可能会从 42% 增加到 63%。 对喜马拉雅西北部雨养豌豆-玉米序列不同生长阶段锌营养提高锌含量的功效进行了两年（2014-15 和 2015 年） –16) 在希尔农业研究和推广中心的实验农场，Bajaura, Kullu (HP)。将 Zn 的四种引发水平（0% ZnSO ₄ – 水浸泡、1% ZnSO ₄、2% ZnSO ₄和 3% ZnSO ₄）和三种引发持续时间（4、8 和 12 小时）与推荐 NPK 的基础剂量进行比较+ ZnSO ₄ @ 25 kg ha ^-1和农民的做法（RDF 的 40% N + 未经处理的种子控制）。豌豆 ( Pisum sativum L.) 和玉米 ( Zea mays L.) 作物在不同生长阶段的 Zn 含量由于用 3% ZnSO ₄引发12 小时而达到最大值。