Crop and varietal diversification of rainfed rice based cropping systems for higher productivity and profitability in Eastern India

• DOI: 10.1371/journal.pone.0175709
• Publication Date: 2017-04-24T17:29:55Z
• Authors: B. Lal; Priyanka Gautam; B. B. Panda; R. Raja; Teekam Singh; R. Tripathi; M. Shahid; A. K. Nayak
• Keywords: Wet season; Cropping system; Dry season; Agricultural diversification; Transplanting; Rainfed agriculture

Rice-rice system and rice fallows are no longer productive in Southeast Asia. Crop varietal diversification of the based cropping systems may improve productivity profitability systems. Diversification is also a viable option to mitigate risk climate change. In Eastern India, farmers cultivate during rainy season (June-September) land leftovers fallow after harvest post-rainy (November-May) due lack sufficient rainfall or irrigation amenities. However, lowland areas, residual soil moistures available (November-March), which can be utilized for raising second crops region. Implementation suitable crop/varietal thus very much vital achieve this objective. To assess yield performance varieties under timely late sown conditions evaluate dry following them, three different duration cultivars were transplanted July August. several non-rice constitute system. The results revealed that tiller occurrence, biomass accumulation, matter remobilization, crop growth rate, ultimately significantly decreased transplanting. On an average, around 30% reduction obtained sowing low temperature stress high at reproductive stages crop. Dry short performed better terms grain yield. season, toria was profitable when earlier if delayed greengram suitable. Highest higher remobilization from source sink. A significant correlation observed between production We infer transplanting decrease occurrence assimilate efficiency, responsible reduced