|
|
|
| Registros recuperados: 167 | |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Bjorneberg, D.L.; Sojka, R.E.. |
| Controlling soil erosion on furrow?irrigated fields is essential to maintain productivity and reduce off?site impacts. Identifying effective alternatives to polyacrylamide (PAM) is desired for continued, affordable irrigation erosion control. We compared the effectiveness of a new polysaccharide/PAM amendment with water?soluble, high molecular weight, anionic PAM in two furrow?irrigated field tests in southern Idaho. Test 1 evaluated three rates of the polysaccharide/PAM amendment (6, 12, and 18 mg L-1 of polysaccharide/PAM), two rates of PAM (2 and 10 mg L-1 of PAM), 10 mg L-1 polysaccharide, and a control during two irrigations in a fallow field. Treatments were applied as a solution with furrow inflow water during irrigation advance. Test 1... |
| Tipo: Article |
Palavras-chave: Erosion. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1284/1/1261.pdf |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Entry, J.A.; Sojka, R.E.. |
| We compared the efficacy of matrix based fertilizers (MBFs) formulated to reduce NO3-, NH4+, and total phosphorus (TP) leaching, with Osmocoate 14-14-14, a conventional commercial slow release fertilizer (SRF) and an unamended control in three different soil textures in a greenhouse column study. The MBFs covered a range of inorganic N and P in compounds that are relatively loosely bound (MBF 1) to more moderately bound (MBF 2) and more tightly bound compounds (MBF 3) mixed with Al(SO4)3H2O and/or Fe2(SO4)3 and with high ionic exchange compounds starch, chitosan and lignin. When N and P are released, the chemicals containing these nutrients in the MBF bind N and P to a Al(SO4)3H2O and/or Fe2(SO4)3 starch-chitosan-lignin matrix. One milligram (8000 spores)... |
| Tipo: Article |
Palavras-chave: Fertilizer. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1283/1/1260.pdf |
| |
| Registros recuperados: 167 | |
|
|
|
