S. SOWJANYA*, C. NAGAMANI, S. HEMALATHA, CH. BHARGAVA RAMI REDDY AND V. CHANDRIKA

Department of Agronomy, S.V. Agricultural College, ANGRAU, Tirupati-517 502.

ABSTRACT

A field experiment was conducted during kharif, 2024 at wetland farm, S.V. Agricultural College, Tirupati, Andhra Pradesh. The experiment was laid out in a split-plot design and replicated thrice. The treatments consisted of four sowing windows viz., I FN of July (M₁), II FN of July (M₂), I FN of August (M₃) and II FN of August (M₄) assigned to main plots, three crop geometries viz., 30 cm x 10 cm (S₁), 45 cm x 10 cm (S₂) and 60 cm x 10 cm (S₃) allotted to sub plots. Among the sowing windows tried, higher seed yield (957 kg ha-1) and stalk yield (2894 kg ha-1) was recorded with I FN of July (M₁) and pigeonpea sown during II FN of August (M4) registered higher post-harvest soil available nutrient status. Crop geometry of 45 cm x 10 cm resulted in higher seed yield (833 kg ha-1) whereas 30 cm x 10 cm recorded higher stalk yield (2794 kg ha-1) and 60 cm x 10 cm resulted in higher post-harvest soil available nutrient status (N, P₂O₅, K₂O:146, 24.6, 197 kg ha-1), number of nodules plant-1 (5.3, 9.7) and dry weight of nodules plant-1 (5.3, 79.4 mg) at 25 and 50 DAS.

KEYWORDS: Pigeonpea, crop geometry, sowing windows, nodules.