This study was conducted to investigate proximate content of horseshoe crab (Tachypleusgigas) in Malaysia. To date, there has been little agreement on what the nutrition value of horseshoe crab is and how it will benefit the consumers. The samples were divided by two parts, which are roe and muscle. The Tachypleusgigas was cleaned of foreign materials and impurities manually by human hand. The samples were ground into flour and sieved through 50 μm sieve and were packaged in airtight plastic bags prior to analyses. The horseshoe crab was analyzed for its proximate composition of different body parts. The results showed that the roe and muscle of Tachypleusgigas contained moisture (50.45 % and 73.67 %), ash (0.41 % and 2.72 %), crude proteins (38.24 % and 14.62 %), crude fats (9.30 % and 8.09 %), carbohydrates (1.67 % and 0.91 %) and energy (241.42 Kcal/100 g and 134.43 Kcal/100 g), respectively. This shows that roe has better nutrition content since it has higher protein, fat and carbohydrate content, which are the main energy-providing nutrient. Overall, the proximate content of Tachypleusgigas was nearer to the shellfish rather than the finfish and can be considered as a good nutrition source.

Macronutrients such as nitrogen (N), phosphorus (P) and potassium (K) are usually found in fertilisers which is essential to plant growth and development. The study reports on the utilization of different fruit peels as an organic fertiliser for the effective growth of water spinach (Ipomoea Aquatica). Each fruit peels of pineapple, banana and mango were collected separately from local fruit vendors. The fruit peels were cleaned, dried, and then grinded into powder individually. The chemical composition of fruit peels powder was analysed by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) and CHNOS analyser which NPK concentration was determined. Among three analysed fruit peels, results demonstrated that banana peels powder showed the highest concentration of K and N, which consists of 26557.86 mg/L and 1.61%, respectively. Besides that, electrical conductivitymeasurement and water absorption capacity of fruit peels powder was studied. Plants were grown under vary amount of fruit peels powder treatments (mango, banana, and pineapple peels application), as well as control treatments (no fertiliser application). Plant height and number of leaves per plantwere analysed to investigate the effect of fruit peels powder treatment on plant growth. The application of 3 g pineapple peels powder gave the better performances in all water spinach growth parameters with mean maximum plant height of 20.83±3.01cm, number of leaves per plant of 9 was recorded. Hence, it can be concluded that 3 g pineapple peels powder can efficiently improve the utilization efficiency of fertilizers in agricultural production.