The effects of cattle slurry and inorganic fertiliser nitrogen on the yield and mineral composition of forage maize. results of preliminary experiment
✍ Scribed by Brian F. Pain; Richard H. Phipps; Selwyn J. Richardson
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 348 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-5142
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Four rates of cow slurry (0, 35, 70 and 105 t/ha) and inorganic nitrogen (0, 40, 80 and 120 kg/ha) were applied in a factorial arrangement to forage maize plots on a sandy loam soil (Hurst Series). The response of maize DM yield to inorganic N was small above 40 kg N/ha. Slurry alone gave satisfactory yields and up to 70 t/ha improved the response to inorganic N. Slurry at 105 t/ha tended to delay crop maturity and reduced yields when more than 40 kg inorganic N/ha was applied. The percentage N, P and K in the soil before drilling and in the crop at the silage stage were positively related to the amount of slurry applied. Appreciable amounts of P, K and Mg remained in a “plant available” state in the soil after the maize harvest.