​Effect of Agronomic Manipulations on Morpho-physiological and Biochemical Responses of Rainfed Redgram [Cajanus cajan (L.) Millsp.]

Abstract

Background: Pulses play an important role in Indian agriculture and they are the rich sources of protein. Redgram is an essential food legume, mostly cultivated under rainfed condition in India. Due to increasing population the demand of pulses is increased; hence the redgram productivity has to be increased to meet out the requirement. To overcome this problem an investigation was carried out to study the effect of crop geometry, modified canopy architecture and 1% PPFM application on morpho-physiological and biochemical responses of rainfed redgram during north-east monsoon season. Methods: The treatments comprised of varied crop geometries viz, broad casting (farmer’s practice), high density planting at 30 × 30 cm and recommended spacing of 60 × 30 cm; modified canopy architectures viz. nipping of primary branches at 45 and 60 days after the receipt of soaking rain and foliar application of 1% PPFM spray at 50% flowering to avoid the moisture stress. Result: The results revealed that sowing at 60 × 30 cm spacing with nipping at 45th day recorded significantly higher seed yield and protein yield of redgram in rainfed condition. Further, nipping at 45th day showed higher level of relative water content (51.6%) associated with lower level of proline (26.61 mg g-1).

Response of Super Early Varieties of Pigeonpea to Crop Geometry under Rainfed Conditions

“…This might be due to higher number of pods per plant at 45 cm  15 cm and optimum plant population compared to 30 cm  15 cm and 60 cm  15 cm. These findings are in conformity with the observations of Ammaiyappan et al (2021).…”

Agro-ecological Sustainability with Pulses under System of Crop Intensification: A Review

“…In pigeon pea nipping arrests the apical bud dominance and increases the production of side branches thus increase the canopy size, photosynthetic activity and more flower buds per plant leading to enhanced grain yield. Also, foliar application of 1% PPFM avoids moisture stress to the crop at critical crop growth stage in rainfed conditions (Ammaiyappan et al, 2021).…”