David Baltensperger | Texas A&M University (original) (raw)
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Papers by David Baltensperger
Transactions of the ASAE, 2002
Long-term manure and fertilizer applications to a soil can increase phosphorus (P) and nitrogen (... more Long-term manure and fertilizer applications to a soil can increase phosphorus (P) and nitrogen (N) transport in runoff. This study was conducted to determine P and N transport in runoff following long-term (since 1953) manure and fertilizer applications. Duplicate soil samples (32) were collected in 1998 from the top 0.1 m of selected plots of a long-term manure and fertilizer applications field experiment and later placed in 1 m 2 soil pans in the laboratory. Manure and fertilizer were mixed with 16 of the soil samples, while no treatment was applied to the other half (long-term residual effect). Simulated rainfall was then applied to the soil during initial and wet (24 hours later) events.
Journal of nematology, 2003
Because rapeseed, especially canola, has the potential to be grown in rotation with sugarbeet in ... more Because rapeseed, especially canola, has the potential to be grown in rotation with sugarbeet in the north-central region of the United States, this study was initiated to assess its susceptibility to infection by Heterodera schachtii and to develop a screening method for Brassica germplasm. Existing methodology was adapted for growing Brassica juncea, B. napus, B. rapa, Brassica hybrids, and sugarbeet, Beta vulgaris, in H. schachtii-infested soil to count the females that developed on the roots. Cysts on sugarbeet contained a mean of 130 eggs compared with 240 for B. napus, lowest for the Brassica. Viability of eggs produced was assessed in soil planted with Brassica and sugarbeet and infested with with 0, 100, 1,000, 3,000, and 5,000 eggs to count resulting females and cysts. Number of females (y) was related linearly to infestation rate (x) by the regression equations y = 2.82 + 0.07(x) for the Brassica lines (R(2) = 0.79; P < 0.001) and y = 0.43 + 0.04(x) for sugarbeet (R(2) ...
Janick/Plant Breeding Reviews, Volume 19, 2000
Transactions of the ASAE, 2002
Long-term manure and fertilizer applications to a soil can increase phosphorus (P) and nitrogen (... more Long-term manure and fertilizer applications to a soil can increase phosphorus (P) and nitrogen (N) transport in runoff. This study was conducted to determine P and N transport in runoff following long-term (since 1953) manure and fertilizer applications. Duplicate soil samples (32) were collected in 1998 from the top 0.1 m of selected plots of a long-term manure and fertilizer applications field experiment and later placed in 1 m 2 soil pans in the laboratory. Manure and fertilizer were mixed with 16 of the soil samples, while no treatment was applied to the other half (long-term residual effect). Simulated rainfall was then applied to the soil during initial and wet (24 hours later) events.
Journal of nematology, 2003
Because rapeseed, especially canola, has the potential to be grown in rotation with sugarbeet in ... more Because rapeseed, especially canola, has the potential to be grown in rotation with sugarbeet in the north-central region of the United States, this study was initiated to assess its susceptibility to infection by Heterodera schachtii and to develop a screening method for Brassica germplasm. Existing methodology was adapted for growing Brassica juncea, B. napus, B. rapa, Brassica hybrids, and sugarbeet, Beta vulgaris, in H. schachtii-infested soil to count the females that developed on the roots. Cysts on sugarbeet contained a mean of 130 eggs compared with 240 for B. napus, lowest for the Brassica. Viability of eggs produced was assessed in soil planted with Brassica and sugarbeet and infested with with 0, 100, 1,000, 3,000, and 5,000 eggs to count resulting females and cysts. Number of females (y) was related linearly to infestation rate (x) by the regression equations y = 2.82 + 0.07(x) for the Brassica lines (R(2) = 0.79; P < 0.001) and y = 0.43 + 0.04(x) for sugarbeet (R(2) ...
Janick/Plant Breeding Reviews, Volume 19, 2000