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Real-time use of soil moisture data for refined greenseeker sensor based N recommendations in winter wheat (Triticum aestivum L.) and effect of foliar P fertilization on corn (Zea mays L.) grain yield and phosphorus use efficiency
| Content Provider | Semantic Scholar |
|---|---|
| Author | Walsh, Olga S. |
| Copyright Year | 2009 |
| Abstract | The Sensor Based Nitrogen Rate Calculator enables producers to estimate yi eld potential and obtain nitrogen (N) fertilization rates based on GreenSeeker se nso measurements and the response index, number of days where GDD (growing degree days)>0, agronomic maximum yield, expected grain price, and fertilizer price . Soil moisture levels can vary significantly both site-to-site and year-toyear. Furthermore, soil moisture is known to significantly affect both yield potential and fertilizer use efficiency. The current Sensor Based Nitrogen Rate Calculator does not take in account profile soil moisture at the time of sensing. Limited soil profile moisture leads to overest imation of yield potential and, low fertilizer use efficiency. At-sensing knowledge of t he amount of water present in the soil profile can help to more accurately predict yiel d potential. This will in turn reduce the risk of applying N when it is not required, and to identify years when sufficient moisture is present in the soil profile to produce near maximum yie lds where more N is needed. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://shareok.org/bitstream/handle/11244/7754/Department%20of%20Plant%20and%20Soil%20Sciences_40.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
