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Techniques of Seed Priming and their Impact on Germination, Establishment and Vigour of Seeds

Challenges related to inadequate seedling emergence and suboptimal stand establishment are prevalent in regions with low rainfall. Soil texture and structure management in semiarid areas pose significant hurdles. Limited resources among small-scale farmers often hinder fine seedbed preparation, exposing them to greater risks compared to their more affluent counterparts. Conversely, achieving robust establishment enhances weed competitiveness, drought resilience, yield potential, and mitigates the need for costly resowing. Seed priming is widely recognized for its ability to enhance germination, expedite emergence, and improve stand establishment. This cost-effective and straightforward technique, if refined and promoted with farmer involvement, can substantially enhance livelihoods by boosting crop emergence rates, accelerating development, shortening crop cycles, and ultimately increasing productivity. Numerous studies attest to the importance of seed priming in achieving strong crop stands and optimal emergence. On-farm seed priming, particularly hydro-priming, shows promise for improving crop establishment across various tropical crops like sorghum, rice, maize, and pigeon pea. Additionally, seed priming can confer resistance to stresses such as drought and heat, offering further advantages in key field crops.