Effect of nitrogen and potassium on production potential of quinoa(Chenopodium quinoa) in India

S  MOBEENA; N  THAVAPRAKAASH; M  DJANAGUIRAMAN; S  GEETHANJALI; P  GEETHA

doi:10.56093/ijas.v96i5.156723

Authors

S MOBEENA Regional Agricultural Research Station (Acharya N G Ranga Agricultural University), Tirupati, Andhra Pradesh 517502, India
N THAVAPRAKAASH Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
M DJANAGUIRAMAN Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
S GEETHANJALI Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
P GEETHA Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India

https://doi.org/10.56093/ijas.v96i5.156723

Keywords:

Economics, Growth, Leaf area index, Nitrogen, Quinoa, Yield

Abstract

A field study was carried out during late rainy (kharif) season of 2022 and winter (rabi) season of 2022–23 at the Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu to explore the best nutrient management strategies for enhancing quinoa (Chenopodium quinoa Willd.) production. The experimental field was arranged in a randomised complete block design (RCBD) with nine treatments [T1, 75:0 kg N: K2O/ha; T2, 100:0 kg N: K2O/ha; T3, 125:0 kg N: K2O/ha; T4, 150:0 kg N: K2O/ha; T5, 75:50 kg N: K2O/ha; T6, 100:50 kg N: K2O/ha; T7, 125:50 kg N: K2O/ ha; T8, 150:50 kg N: K2O/ha and T9, Without N and K2O fertilisers (Control)], each replicated thrice. The results revealed that the application of 150:30:50 kg N: P2O5: K2O/ha (T8) led to superior growth parameters (plant height, leaf area index, dry matter production and number of branches/plant), yield attributes (number of panicle/plant, panicle length, panicle conversion efficiency, number of grains/panicle and test weight), yield (grain and stalk), and economic parameters (gross returns, net returns and benefit: cost ratio) for quinoa, outperforming other treatments except for
150:30:0 kg N: P2O5: K2O/ha (T4) during both seasons. The lowest values across all parameters were recorded for the control (T9). It can be inferred from the investigation that the application of 150:30:50 or 150:30:0 kg N: P2O5: K2O/ha significantly enhanced quinoa's growth, yield and economic parameters compared to lower nutrient doses in India.

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