Nuclear Institute of Agriculture (NIA), Tando Jam, 70060, Sindh, Pakistan.
Department of Botany, Government College Women University, Faisalabad, Pakistan.
Sci Rep. 2023 Oct 31;13(1):18677. doi: 10.1038/s41598-023-38997-8.
The global demand for crop production is rapidly growing due to the continued rise in world population. Crop productivity varies generally with soil nutrient profile and climate. The optimal use of fertilizers might help to attain higher crop yield in canola. To circumvent nutrient imbalance issues in soil, two separate field trials were conducted to determine (a) the best source of nitrogen (N) between ammonium sulfate (NH)SO) and ammonium nitrate (NHNO), (b) significance of gibberellic acid (GA) and potassium (K), in an attempt to enhance canola yield and yield attributes. Both experiments were carried out in randomized complete block design (RCBD) with three replicates. The nitrogen source in the form of NH)SO (0, 10, 20 and 30 kg/ha) and NHNO (0, 50, 75 and 100 kg/ha) was applied in the rhizosphere after 3 and 7 weeks of sowing, referred to as experiment 1 (E1). In another separate experiment (E2), the canola crop was sprayed with four level of GA (0, 10, 15, 30 g/ha) and K (0, 2.5, 3.5, 6 g/ha) individually or in combination by using hydraulic spryer, 30 days after sowing (DAS). The data was collected at different growth stages of canola and analyzed statistically. The E1 trail showed that N fortification in the form of NHNO (100 kg/ha) and (NH)SO (30 kg/ha) had a positive effect on the plant height, number of branches, fruiting zone, seed yield per plant, seed yield per hectare of canola except oil percentage. Moreover, canola plants (E2) also displayed a significant improvement on all studied features with high doses of GA (30 g/ha) and K (6 g/ha) individualy and in combined form. The correlation coefficient analysis of (NH)SO and NHNO was highly significant to plant height, number of branches, fruiting zone, seed yield per plant, seed yield per hectare of canola In a nutshell, compared to both source of N, NHNO was more efficient and readily available source of N. GA being a growth elicitor and potassium as a micronutrient serve as potential source to improve yield and to manage nutrient profile of canola.
由于世界人口持续增长，全球对作物产量的需求迅速增长。作物生产力通常随土壤养分状况和气候而变化。最佳施肥可能有助于提高油菜的产量。为了避免土壤中养分失衡的问题，进行了两项独立的田间试验，以确定（a）硫酸铵（NH 4）2SO 4和硝酸铵（NH 4）NO 3之间氮（N）的最佳来源，（b）赤霉素（GA）和钾（K）的重要性，试图提高油菜的产量和产量性状。这两个实验都是在随机完全区组设计（RCBD）中进行的，每个实验有三个重复。氮源以 NH 4）2SO 4（0、10、20 和 30 kg/ha）和 NH 4）NO 3（0、50、75 和 100 kg/ha）的形式在播种后 3 周和 7 周施用于根际，称为实验 1（E1）。在另一个单独的实验（E2）中，油菜作物在播种后 30 天（DAS）通过液压喷雾器用四种 GA（0、10、15、30 g/ha）和 K（0、2.5、3.5、6 g/ha）的单独或组合水平进行喷洒。在油菜的不同生长阶段收集数据并进行统计分析。E1 试验表明，以 NH 4）NO 3（100 kg/ha）和（NH 4）2SO 4（30 kg/ha）的形式强化 N 对油菜的株高、分枝数、结实区、单株种子产量、每公顷种子产量有积极影响，除了油分百分比。此外，油菜植株（E2）也表现出所有研究特征的显著改善，高剂量的 GA（30 g/ha）和 K（6 g/ha）单独和组合使用。（NH 4）2SO 4和 NH 4）NO 3 与油菜的株高、分枝数、结实区、单株种子产量、每公顷种子产量的相关系数分析均高度显著。简而言之，与两种 N 源相比，NH 4）NO 3 是更有效和易利用的 N 源。GA 作为生长激发剂，钾作为微量元素，是提高产量和管理油菜养分状况的潜在来源。
