The role of adding potassium humate and foliar spraying with marine algae on the mineral content and nutritional value of Moringa

Abstract

An experiment was carried out in the plastic house at the Agricultural Research Station in Bani Maqam, affiliated to Jam Jamal Agriculture Directorate in Sulaymaniyah Governorate, in a randomized complete block design, with three replications, on June 10, 2021. Furthermore, 4, 8, 12 and 16 kg hectares when planting and before the first irrigation and after each mowing process, and the second factor was spraying with seaweed extract Alga000 at three levels 0, 1, and 2 ml (2 and 4 ml per liter of total spray) and at two intervals after 20 and 30 days of planting After 10 and 25 days of mowing, at a height of 20 cm from the surface of the ground, the mineral content of leaves and dry stems samples of the first mowing plants was estimated. It included the content of calcium, iron and manganese (mg/100g dry matter) and the percentage of nitrogen, phosphorous and potassium. Indicators of the nutritional value of the leaves and stems of the first mow, which included the estimation of the percentage of total carbohydrates, ash, protein and fiber. The results showed that adding 16 kg hectares of potassium humate and spraying at a concentration of 2 ml per liter twice with algae extract Bahriya recorded the highest content of iron (42.3 and 19.82), calcium (2103.7 and 1009.29) and manganese (40 and 10.15) mg/100 g of dry matter for leaves and stems. The highest percentage of phosphorous was 0.333% in dry leaves, and the highest percentage of nitrogen (3.89%) and 1.58%), potassium (1.601% and 1.24%), protein (24.314% and 9.885%), total carbohydrates (35.23% and 11.86%), and the lowest fiber content (4.57% and 25.45%) in the dry matter. For leaves and stems . Keywords: moringa, potassium humate, marine algae, mineral content, nutritional value