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VOL. 8, ISSUE 3 (2026)
Effect of spacing and phosphorus levels on growth, yield and economics of lathyrus (Lathyrus sativus L.) under Prayagraj agro-climatic conditions
Authors
Akhilesh Kumar, Lait Kumar Sanodiya, Kritika Anand, Dr. Shailendra Kumar singh, Rishi Raj Chaudhari
Abstract
A field experiment entitled “Effect of Spacing
and Phosphorus Levels on Growth, Yield and Economics of Lathyrus (Lathyrus
sativus L.) under Prayagraj Agro-climatic Conditions” was conducted during Rabi
2025-26 at the Agricultural Research Farm, Department of Agronomy, Prof.
Rajendra Singh (Rajju Bhaiya) University, Prayagraj, Uttar Pradesh. The
experiment was laid out in a Factorial Randomized Block Design (FRBD) with
three replications to evaluate the effect of spacing and phosphorus levels on
growth, yield attributes, yield and economics of lathyrus. The treatments
comprised three spacing levels (20 × 10 cm, 30 × 10 cm and 40 × 10 cm) and
three phosphorus levels (20, 30 and 40 kg P ha⁻¹) along with a control
treatment. The results revealed that spacing and phosphorus levels
significantly influenced growth and yield parameters of lathyrus. Among the
spacing treatments, 40 × 10 cm spacing recorded the highest plant height (95.74
cm), number of branches per plant (11.07), dry matter accumulation (23.36 g
plant⁻¹), leaf area index (3.23), pods per plant (54.28), grain yield (22.13 q
ha⁻¹), biological yield (54.92 q ha⁻¹) and harvest index (40.29%). Similarly,
among phosphorus levels, application of 30 kg P ha⁻¹ proved superior and
recorded higher growth, yield attributes and yield compared to other phosphorus
levels. The interaction effect indicated that T₈ (40 × 10 cm spacing +
phosphorus @ 30 kg ha⁻¹) produced the highest values for most growth and yield
attributes, including plant height (100.07 cm), branches per plant (12.00),
leaf area index (3.50), pods per plant (60.05), biological yield (60.07 q ha⁻¹)
and harvest index (41.73%). However, the highest grain yield (23.43 q ha⁻¹) and
economic returns were recorded under T₉ (40 × 10 cm spacing + phosphorus @ 40
kg ha⁻¹). Economic analysis revealed that T₉ recorded the maximum gross return
(₹136,400 ha⁻¹), net return (₹58,400 ha⁻¹) and benefit-cost ratio (1:2.3),
making it the most profitable treatment. Therefore, it may be concluded that
cultivation of lathyrus at 40 × 10 cm spacing with phosphorus application of
30–40 kg ha⁻¹ is beneficial for achieving higher productivity and profitability
under Prayagraj agro-climatic conditions.
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Pages:273-279
How to cite this article:
Akhilesh Kumar, Lait Kumar Sanodiya, Kritika Anand, Dr. Shailendra Kumar singh, Rishi Raj Chaudhari "Effect of spacing and phosphorus levels on growth, yield and economics of lathyrus (<i>Lathyrus sativus </i>L.) under Prayagraj agro-climatic conditions". International Journal of Agriculture and Plant Science, Vol 8, Issue 3, 2026, Pages 273-279
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