ABSTRACT

Nickel is an essential micronutrient for leguminous plants. It has a large range between limiting and toxic levels. A pot experiment was conducted on two dominant soil series of Jharkhand i.e., Upland [Sidhamantoli (ST-5)] and Lowland [Tetratoli (TT-5)]. Five application levels of Ni, viz. 0.0, 2.5, 5.0, 10.0 and 20.0 mg kg⁻¹ with pea (Pisum sativum L.) as test crop were arranged in three blocks in a glass house. An increasing trend of pea dry matter was observed with increasing Ni application level up to 10.0 mg kg⁻¹. Nickel content in pea plant over control was found 1.36 to 2.53 folds higher with Ni application 2.5 to 20.0 mg kg⁻¹. Accumulation of Ni in soil of Sidhamantoli series (upland situation) was noticed 1.11–4.29 mg kg⁻¹ in top and 1.31–5.68 mg kg⁻¹ in bottom of the pot, while in Tetratoli soil series (low land situation) Ni content was found 1.40–5.35 mg kg⁻¹ in top and 1.25–4.95 mg kg⁻¹ in bottom soil. Nickel application stimulates Plant growth parameters and that gradually increased with increasing Ni application levels up to 5.0 mg kg⁻¹ in Sidhamantoli and up to 10.0 mg kg⁻¹ in Tetratoli soil series, while at 20 mg kg⁻¹ Ni application in both soil conditions showed negative effect. So, appropriate precaution should be maintained in application of Ni in leguminous plants and fixed a threshold value of Ni application level 5.0 mg kg⁻¹ in upland Sidhamantoli (ST-5) and 10.0 mg kg⁻¹ in low land Tetratoli (TT-5) soil series of Jharkhand plateau.

摘要

镍是豆科植物必需的微量营养素。它在极限和毒性水平之间有很大的差异。在贾坎德邦的两个主要土壤系列上进行盆栽试验，即旱地[Sidhamantoli（ST-5）]和低地[Tetratoli（TT-5）]。镍的五个应用水平，即。将0.0、2.5、5.0、10.0和20.0 mg kg ^-1（以豌豆（Pisum sativum L.）作为试验作物）布置在玻璃房中的三个区域中。当Ni的施用量达到10.0 mg kg ^-1时，观察到豌豆干物质的增加趋势。发现豌豆植物中的镍含量比对照高1.36至2.53倍，施氮量为2.5至20.0 mg kg ^-1。注意到在Sidhamantoli系列土壤（高地状况）中镍的累积量为1.11–4.29 mg kg ^-1，盆底下部为1.31–5.68 mg kg ^-1，而在Tetratoli土壤系列（低地状况）中，Ni含量为发现1.40-5.35毫克千克^-1在顶部和1.25-4.95毫克千克^-1在底部土壤。施用镍刺激植物的生长参数，并随着施氮水平的增加而逐渐增加，在Sidhamantoli中高达5.0 mg kg ^-1，在Tetratoli土壤系列中高达10.0 mg kg ^-1，而在20 mg kg ^-1时在两种土壤条件下施用镍均显示出负面影响。因此，在豆科植物中施用镍应保持适当的预防措施，并在陆生西达曼托利（ST-5）和低地四甲苯（TT-5 ）中将镍施用水平的阈值固定为5.0 mg kg ^-1和10.0 mg kg ^-1。 ）贾坎德邦高原土壤系列。