A history of tillage in California’s Central Valley

Autor: Jeffrey P. Mitchell, Anil Shrestha, P. Hogan, R. Roy, G S Pettygrove, Karen Klonsky, Donald C. Reicosky, D. B. Marcum, D. Chessman, L. Dunning, L. M. Carter

Publikováno v: Soil and Tillage Research. 157:52-64

The Central Valley (CV) of California is a remarkably productive agricultural region. Much of the productive capacity of the CV stems from the reliable tillage management systems that were developed beginning in the 1930s and that changed very little

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d9ace2d9aea29243871706fc98e63a9
https://doi.org/10.1016/j.still.2015.10.015

Potential to assess nitrate leaching vulnerability of irrigated cropland

Autor: Anna Fryjoff-Hung, Kristin Dzurella, Allan D. Hollander, G. S. Pettygrove, Thomas Harter

Publikováno v: Journal of Soil and Water Conservation. 70:63-72

Irrigated cropland represents the largest source of groundwater nitrate (NO3) pollution in the Central Valley (CV) of California. Mitigation, through the use of best management practices that maximize crop nitrogen use efficiency (NUE), will be most

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07a0eff838313a4423122559c6057d21
https://doi.org/10.2489/jswc.70.1.63

Potassium Fixation in San Joaquin Valley Soils Derived from Granitic and Nongranitic Alluvium

Autor: Randal J. Southard, G. S. Pettygrove, M. A. Murashkina

Publikováno v: Soil Science Society of America Journal. 71:125-132

Potassium fixation influences the effectiveness of fertilization in soil-plant systems. A rapid method for measuring K fixation could help clarify relationships with other soil properties, especially mineralogy. Our objectives were to compare some ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7dad81e1cd433bfeecf5a6e257d1ae7c
https://doi.org/10.2136/sssaj2006.0060

Precision agriculture can increase profits and limit environmental impacts

Autor: R. E. Plant, G. S. Pettygrove, W. R. Reinert

Publikováno v: California Agriculture, Vol 54, Iss 4, Pp 66-71 (2000)

Precision agriculture is the management of an agricultural crop at a spatial scale smaller than the individual field. Mineral nutrient levels, soil texture and chemistry, moisture content and pest patterns may all vary widely from location to locatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad62516aa901977e11f83d183b52e5c1
https://doi.org/10.3733/ca.v054n04p66

Classification of Conservation Tillage Practices in California Irrigated Row Crop Systems

Autor: P. Hogan, R. Fry, S Upadhyaya, Ron Vargas, G S Pettygrove, Anil Shrestha, Robert C. Roy, Kurt J. Hembree, Jeffrey P. Mitchell

Publikováno v: Mitchell, J P; Pettygrove, G S; Upadhyaya, S; Shrestha, A; Fry, R; Roy, R; et al.(2009). Classification of Conservation Tillage Practices in California Irrigated Row Crop Systems. Division of Agriculture and Natural Resources Communication Services: ANR Publications. Retrieved from: http://www.escholarship.org/uc/item/9kq15957

Author(s): Mitchell, J P; Pettygrove, G S; Upadhyaya, S; Shrestha, A; Fry, R; Roy, R; Hogan, P; Vargas, R; Hembree, K | Abstract: Tillage has been practiced for nearly as long as there has been agriculture. New techniques in use now can reduce erosio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75201f642a5f8b2a9166b4a22cb176d5
http://www.escholarship.org/uc/item/9kq15957