Quantifying the Correlation between Seed Moisture Content and Seed Weight Across Diverse Crop Varieties: A Comprehensive Analysis

Abstract

Seeds, possessing inherent hygroscopic characteristics, undergo the processes of moisture absorption and desorption until a point of equilibrium moisture content (EMC) is reached, wherein the moisture levels in the seeds align with those in the surrounding environment. To investigate the intricate relationship between seed moisture content and weight, a comprehensive study spanning 10 months was conducted, employing diverse crop seeds (Paddy, Maize, Soybean, Groundnut, Redgram and Greengram). Notably, variations in equilibrium moisture content (EMC) were identified, with cereals and pulses exhibiting higher EMC than oilseeds. Robust positive correlations (0.71 to 0.88) between seed moisture and weight were established, underscoring the economic implications of drying losses. Economic losses were quantified, revealing substantial financial impacts in all crops. For instance, paddy seeds stored at 20% moisture experienced drying losses of 15.83%, translating to an economic loss of ₹579.39. Similar patterns were observed in maize, redgram, greengram, soybean, and groundnut, emphasizing the critical role of seed moisture considerations in storage management and the substantial economic losses incurred across diverse crops.