Scsc 301 exam 2 exam - Study guides, Class notes & Summaries

SCSC 301- SPRING 2024 Exam with Questions and Answers A soil having a pH of 8.0, 20% exchangeable sodium, and 5 dS conductivity is: ANSWER saline, sodic The most economical means of decreasing the soil pH from 7.0 to 4.5 in a non-calcareous soil is: ANSWER sulfur With the passage of time, the soil pH tends to: ANSWER decrease The compound that can be used as an agricultural liming material is: ANSWER CaCO3 Calcium Carbonate reacts with the carbonic acid in the soil solution to for...

SCSC 301 Exam 4 Questions With Correct answers .____ and phosphorus interactions in strongly acid soils account, in part, for the low solubility of phosphorus in such soils - ANSWER-iron .____ cannot be used as a liming material. - ANSWER-CaSO4 .____ is a material that can be added to soils to bring about a decrease in pH of 2 or more units - ANSWER-Al2(SO4)2 .____ is not a possible source of available sulfur in soils. - ANSWER-Microbial fixation of the atmospheric form .____ is ...

SCSC 301 Exam 3 Questions With Correct Answers .12 ft deep peak of temp - ANSWER-About Oct. Nov. .9 steps in rock to soil development - ANSWER-1. physical disintegration 2. chemical alteration 3. changes in mineral distribution 4. formation of secondary minerals 5. appearance of higher plants 6. development of soil structure 7. leaching of bases 8. downward movement of clay 9. Fe/Al oxides are the remaining minerals .A horizons - ANSWER-topmost mineral horizon with some organic matter ...

Which of the following is NOT a carbon-containing compound that is involved in the cycling of carbon associated with most plant/animal life forms? correct answer: Calcium carbonate Which organic matter property affects the availability of nutrients to plants? correct answer: Cation exchange capacity Complete degradation of residues (complete oxidation) results in correct answer: CO2 Which of the answers below represents an immobilized form of N? correct answer: Protein in a bacteria...

SCSC 301 Exam 3 with Latest Questions and Answers Soil Colloid ANSWER organic and inorganic matter with very small particle size and a correspondingly large surface area per unit of mass; observe with electron microscope; adsorb cations and water and have surface charge Surface Charge ANSWER most soils negatively charged; net charge Crystalline Structure ANSWER atoms repeat themselves in a specific order Tetrahedra ANSWER linked together in a sheet, all tetrahedra in the sheet point ...

an organism that can use CO2or CO3- (i.e., inorganic C) as a C source, and obtain energy from the sun (photo) - or from the oxidation of inorganic elements or compounds such as iron, sulfur, hydrogen, ammonium, and nitrites (chemo)? - ANSWERAutotroph such as plants, algae, cyanobacteria, etc. an organism that can only get carbon and energy from organic compounds? - ANSWERHeterotroph such as bacteria, fungi, protozoa, etc. an organism that grows only in the presence of molecular oxygen? - A...

The subsoil horizon symbol for the zone of maximum eluviation is: correct answer: E The percent organic matter in soils increases as_____ decreases correct answer: Temperature The horizon that movement and accumulation of sodium is a microprocess essential to the occurrence of is: correct answer: Bn The epipedons that are thick with a dark color, low base status, and good structure are called: correct answer: Umbric In the soil forming macroprocess, the formation of clay minerals...

p - plow t - clay g - glade colors o - oxides k - calcium carbonate o_ - indicates organic horizon y - gypsum (calcium sulfate) z - salts h - humis s - sesquioxides (A) epipedon - Mollic, Umbric, Melanic, Ochric (O) epipedon - Histic (E) epipedon - Albic (Bw) epipedon - Cambric (Bt) epipedon - Argillic (Bo) epipedon - Oxic (Bhs) epipedon - Spodic (Bk) epipedon - Calcic (Bkm) epipedon - petrocalcic (By) epipedon - Gypsic (Bym) epipedon -...

Scsc 301 Tamu Exam 2 Howe With Correct Answers

Which of the following is NOT a carbon-containing compound that is involved in the cycling of carbon associated with most plant/animal life forms? - ANSWERCalcium carbonate Which organic matter property affects the availability of nutrients to plants? - ANSWERCation exchange capacity Complete degradation of residues (complete oxidation) results in - ANSWERCO2 Which of the answers below represents an immobilized form of N? - ANSWERProtein in a bacterial cell Which is true when compari...