Abstract

Syed Khalid Mustafa^* and Meshari M.H. Aljohani

DOI : http://dx.doi.org/10.13005/ojc/370322

The present work based on soil nutrients analysis of covered and uncovered fields nursed with organic fertilizer and cultivated with various crops. Collected the soil from three deep bottoms (5 cm, 15 cm, and 30 cm), mixed, and prepared five different samples. Calculated the pH value, electrical conductivity, and the percentage of nitrogen, phosphorus, Potassium, the humus of the collected soil samples and documented all the parameters. The results showed that the soil has moderately high pH values (7.9 in the greenhouse and 7.5 in the uncovered area), the E.C of
greenhouse (4.1dS/m) is slightly lower than the uncovered area (4.8dS/m), nitrogen (6.3% than in the uncovered field 4.7%), relatively high concentration of phosphorus (5.16 mg/100g in the greenhouse uncovered field 4.67 mg/g), relatively high potassium values (39.04mg/100g in the greenhouse and 36.30 mg/g in the uncovered area) and high values of humus (12.7 % in the greenhouse and 9.1 % in the uncovered area). Concluded that the soil is saturated in the greenhouse with phosphorus and Potassium, no need to further fertilizations in the forthcoming years, and thegreenhouse is better for crop cultivation.

Greenhouse; Organic Fertilizers; PH; Quantitative analysis; Soil Fertility

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