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Efficient utilization of rice (Oryza sativa L.) fallow (∼11.6 million hectares) systems can accelerate the growth of Indian agriculture. But, bringing more area under cultivation is an energy-demanding process and a source of gaseous emissions in the era of climate change. Hence, development of environmentally sustainable cropping systems require for efficient use of rice-fallow lands for sustainable productivity. Therefore, the present study was conducted with the objective to identify sustainable and environmentally safer cropping systems with low global worming potential (GWP) and low energy requirement for rice fallow land of India. Seven diverse crops (e.g., toria (Brassica campestris var. toria), lentil (Lens culinaris), field pea (Pisum arvense), garden pea (Pisum sativum L.), green gram (Vigna radiata), black gram (Vigna mungo) and maize (Zea mays)) were introduced in rice-fallow system by adopting no-till (NT …