|Series||Research bulletin / Ohio Agricultural Research and Development Center -- 988, Research bulletin (Ohio Agricultural Research and Development Center) -- 988|
|The Physical Object|
|Pagination||16 p. ;|
|Number of Pages||16|
and moisture content. Soil moisture conditions can be estimated, with experience, to an accuracy of about 5 percent. Soil moisture is typically sampled in I-foot increments to the root depth of the crop at three or more sites per field. It is best to vary the number of sample sites and depths according to crop, field size, soil texture, and. 1. Introduction. With the increase in global food and energy demand, the monitoring of crop yield is essential for the food security. Argentina is one of the six most important producers of wheat, maize and soybean ().However, like in several countries, the main cause of instability in crop yield is the dependency on soil moisture variability, as the crops grow without by: Estimation of Soil Moisture Under Corn1 by R. H. Shaw2 Although numerous references can be found in the literature relating to different methods of predicting evaporation and evapotranspiration, there has been relatively little research on pre dicting soil moisture under a row crop such as corn. Estimating Soil Moisture by Feel and Appearance Revised 8/01 Evaluating soil moisture using feel and appearance is a simple low cost method that may be used to: • Determine when irrigation is needed. • Estimate the available water in the root zone prior to planting or irrigation • Estimate the amount of irrigation water to applyFile Size: KB.
Soil moisture during the growing season is essential to obtain optimal yield. Optimal yield is affected by the availability of moisture as stored water in the soil profile or timely recharge during rain events. Soil texture, tillage practices, residue cover, drainage and weed control can play a significant role in soil moisture availability. Estimation of Soil Moisture Content: A Review multi-frequency GPR should be used to calculate soil moisture content at different depths. The results can be used to identify soil texture.  Michael L. Whiting, Lin Li, Susan L. Ustin presented an approach fitting an inverted Gaussian function to estimate moisture content. Estimating Soil Moisture by Natural Feel and Appearance Resources Conservation Service Irrigation Water Management (IWM) is applying water according to crop needs in an amount that can be stored in the plant zone of the soil. The feel and appearance method is one of several irrigation scheduling methods used in IWM. It is a way. A field study for the arid northwest China has been conducted to find water-saving strategies of drip irrigation for dense-planted crops. The annual water consumption for optimal growth was mm, of which soil evaporation was 27% and the foliage transpiration 73%. A relationship between soil water consumption and the irrigation amount, crop yield and water use efficiency were Cited by:
Such delays were related to increased grain moisture and decreased corn grain yield when net cumulative air GDD were less than the threshold value of and water stress was minimal. In-row residue cover due to tillage and previous crop can have a major impact on the growth and development of corn in the northern Corn Belt. calibrated neutron moisture meter (NMM) remains the most accurate and precise method for soil profile water content determination in the field, and is the only indirect method capable of providing accurate soil water balance data for studies of crop water use, water use efficiency. for farther development of the rapid, nondestructive method for estimating moisture content of small wheat samples. Keywords. Moisture content. Wheat, Kernels, Measurement, M oisture content* in cereal grains is the most important factor determining suitability for storage, transport, milling, and other processes. Knowledge of grain-lot moistureCited by: 7. Measurement of soil moisture content by gravimetric method The soil moisture content may be expressed by weight as the ratio of the mass of water present to the dry to the dry weight of the soil sample, or by volume as ratio of volume of water to the total volume of the soil sample. To determine any of these ratios for a particular soil sample File Size: 90KB.