Production potential of greengram [Vigna radiata (L.) Wilczek] in response to System of Crop Intensification (SCI) practices

Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, during kharif and rabi seasons, 2010–11 to evaluate the influence of System of Crop Intensification (SCI) practices in greengram. Greengram with double seedlings hill⁻¹ maintained at 30 x 10 cm recorded better growth characters viz., plant height (65.20 cm) and drymatter production (4615 kg ha⁻¹) with accelerated physiological attributes like LAI (6.1) and CGR (6.09 g m⁻² day-¹) than other treatments. Yield attributes like number of clusters hill⁻¹ (8.74) and number of pods hill⁻¹ (75.3) was significantly higher with double seedlings hill⁻¹ maintained at 40 x 40 cm planting geometry than other levels. Whereas, pod length and 100 grain weight were not altered due to SCI practices. Single seedling hill⁻¹ maintained at 25 x 25 cm spacing registered significantly higher grain yield (1408 kg ha⁻¹) and it was at par with double seedlings hill⁻¹ maintained at 30 x 30 cm spacing (1323 kg ha⁻¹) and double seedlings hill⁻¹ with 20 x 20 cm spacing (1309 kg ha⁻¹) compared to others. Haulm yield was the highest under double seedlings hill⁻¹ with 30 x 10 cm spacing (3062 kg ha⁻¹). The highest net return (21312) and B: C ratio (2.02) were obtained with single seedling hill⁻¹ maintained at 25 x 25 cm spacing (T).