Variation among Different Growth Stages on Mineral Nutrient Content in Guava Fruits

Abstract

Guava is one of the most promising fruit crops of India and is considered to be one of the exquisite nutritionally valuable and remunerative crops. We are unaware of any report describing macro and micronutrient dynamics in fruit at different growth stages of guava. For conducting this experiment fruit of variety Allahabad Safeda, L-49, Lalit, Shweta, Arka Kiran, Salithong, Kimchu were collected at different stages like marble, seed hardening and harvest stage for estimation of primary nutrient (N, P, K), secondary nutrient (Ca, Mg) and micronutrient (Fe, Mn, Zn, Cu). As regards the availability of mineral nutrient contents of varieties did not follow definite trend.  The nutrient content particularly N, and K were recorded highest at marble stage while as Mg and Ca was accumulated maximum in stone hardening stage and P, Zn, Fe, Cu, Mg and Mn was in harvesting stage. There was least variation was observed in Mg content. Finally, it may be concluded that for the improvement of yields and quality requirement of specific mineral and nutrients is required at different growth stages.