Soil pH soil environment (Ward

Soil Neutralizer is a product that lowers the soil pH levels through a chemical ion exchange. Studies have shown that increased calcium strengthens plant stems and decreases susceptibility to several plant diseases as a result of a lower pH soil environment (Ward Chemical). Soil acidity problems are increasing in areas of Nebraska because of continuous cropping and use of acidifying fertilizers. Soil acidity problems develop slowly, with acidification occurring much faster on sandy soils than on fine textured soils. Soil acidity may be reduced with lime application (see Lime Use for Soil Acidity Management, G1504), but distance from the lime source can make this a costly option. Adopting practices to reduce the rate of soil acidification may be economical for many producers.

Plant growth and soil microbial activity are affected by soil acidity, resulting in reduced crop yields. Indirect effects on nutrient availability and on the presence of toxic ions such as exchangeable aluminum and manganese are generally more important to crop performance than the direct effect of acidity on the plants. Some nutrients become less available as soils become acid, while other nutrients become more available. Calcium carbonate or mixtures of calcium and magnesium carbonate are the most common materials used for liming soils.

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Calcium and magnesium carbonates occur as limestone rock along the eastern slopes of the Rocky Mountains. Limestone rock must be ground to be effective for neutralizing soil acidity.i.g Marl is an unconsolidated material containing calcium carbonate with varying amounts of silt, clay and organic matter as impurities. Marl is deposited by groundwater discharge and usually occurs in shallow lakes and bogs.

It is use to reduce acidity and improve fertility or oxygen levels. Oyster Mushroom as one of the main focus of this study contains many species with specific uses in every kind.It is widely studied as it has flavour and contains nutritional and medicinal properties. As nutrient source of protein, carbohydrates, vitamins, calcium and iron, it can be used in a variety of applications (Corrêa et al., 2016).

For instance, oyster mushroom can be used for medical purposes which can increase the immune power of our body against diseases. Therefore, it can be used as a dietary supplement (Khatun et al., 2015). Spent substrate adds organic matter and structure to the soil. Spent substrate primarily improves soil structure and it does provide a few nutrients. Spent substrate is the choice ingredient by those companies making the potting mixtures sold in supermarkets or garden centers. On the other hand,shrimp shells are also one of the main focus of this study to neautralize the soil.

The term shrimp is used to refer to some decapod crustaceans, although the exact animals covered can vary. Used broadly, it may cover any of the groups with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata.Shrimp’s waste(dried head or shell) was found to have high protein content and high level of minerals especially Ca,P,Na and Zn.It is free from aflatoxins (B1,B2,G1 ; G2) concentrations.Shrimp’s shell were found to contain high values of macro elements and rare values of micro elements.It is also higly demanded globally due to its nutritional values.

Therefore,the researcher wants to test the effectiveness of oyster mushroom(Pleurotus ostreatus) substrate and shrimp shells as soil neutralizer.A.QUESTIONS OR PROBLEMS BEING ADDRESSED How effective is Oyster mushroom(Pleurotus ostreatus) substrate and shrimp shells as soil neutralizer? Specifically,it will seek answers the following questions: 1.What is the ratio of substrate effectively to neutralize the soil? 2.What is the effect of oyster mushroom substrate and shrimp shells as soil neutralizer?in terms Of: 2.1 Physical properties 2.1 a.

Plant Growth 2.1 b.Soil texture 2.2 Chemical properties 2.2 a.Soil pH level 2.2 b.

Calcium carbonate content 2.2 c.Phosphorous content 2.

2 d.Nitrogen content 2.2 e.Potassium content3.

Is there any significant difference between oyster mushroom substrate and shrimp shells as soil neutralizer to commercial soil neutralizer in terms of: a.Number of leaves b.Number of days c.Soil pH level d.

Plant growthB.ENGINEERING GOALS,EXPECTED OUTCOMES AND HYPOTHESIS Engineering goals: This study aims to produce an alternative soil neutralizer that will benefit Soil and Water Conservation Act in support to Senate Bill No. 337 known as an act promoting soil and water conservation technologies and approaches for sustainable land management in the Philippines and for other purposes Act of 2014 Expected outcome: Develop alternative soil neutralizer that will benefit and can afford by farmers and gardeners.Null:H :there is no significant difference in the soil pH between commercial soil neutralizer and oyster mushroom(Pleurotus ostreatus) substrate and shrimp shells as soil neutralizer.Alternative: H :there is a significant difference in the soil pH between commercial soil neutralizer and oyster mushroom(Pleurotus ostreatus) substrate and shrimp shells as soil neutralizer.