University of Kentucky College of Agriculture
 

Online Publications

Filter by Author

Josh McGrath



Agricultural Lime Recommendations Based on Lime Quality
1/13/2016 (major revision)

Soil acidity is one of the most important soil factors affecting crop growth and ultimately, yield and profitability. It is determined by measuring the soil pH, which is a measure of the amount of hydrogen ions in the soil solution. As soil acidity increases, the soil pH decreases. Soils tend to be naturally acidic in areas where rainfall is sufficient to cause substantial leaching of basic ions (such as calcium and magnesium), which are replaced by hydrogen ions. Most soils in Kentucky are naturally acidic because of our abundant rainfall. | ID-163
web only | 6 pages | 2,749 words | 73 downloads | PDF: 485 kb


Land Judging Score Card
3/31/2015 (major revision)

Score sheet for the 4-H publication "Land Judging in Kentucky." | 4BA-09SE
web only | 2 pages | - | 28 downloads | PDF: 149 kb


4-H Land Judging in Kentucky
3/30/2015 (major revision)

Land judging is a way of appraising the physical nature and capability of soils. Certain soil properties, such as slope, depth and color, and others that can be seen, felt or measured, are reliable indicators of soil characteristics. This publication provides instruction on basic soil concepts that can be easily applied to agricultural, industrial, residential, and recreational land uses in Kentucky. It provides characteristics to be judged as well as a good working knowledge of soil. | 4BA-08MH
web only | 19 pages | 5,578 words | 50 downloads | PDF: 7,100 kb


Determining Soil Texture by Feel
1/22/2015 (new)

Soil texture refers to the proportion of sand, silt, and clay in a soil. Texture influences almost every aspect of soil use, both in agricultural and engineering applications, and even how natural ecosystems function. Many scientists consider soil texture the most important soil property as it can influence soil/water relationships, gas exchange, and plant nutrition. Accurately determining soil texture in a lab requires time and money; therefore, it is often necessary to estimate soil texture in the field by feel, which can be very accurate if done correctly. | AGR-217
web only | 3 pages | 1,049 words | 48 downloads | PDF: 250 kb