Browse on keywords: fertility grain phosphorus
Search results on 09/23/18
5463. Pumphrey, F.V. and P.E. Rasmussen. 1982. Winter wheat fertilization in the Northwest intermountain region.. OR Agr. Expt. Sta., Circular #691. OSU, Corvallis, OR..
Most dryland wheat needs 40-100 lb/ac N. Early spring applications of N are 50% more efficient. Most wheat fields also need S. Most soils do not need P, but if needed half as much P needs to be applied if drilled with seed versus seperate application. T: N fertilizer effect on yield. N and S in grain and straw of a 50 and 125 bushel crop. Yields of wheat fertilized with different sources and forms of N. Soil N in non-fertilized soil as influenced by soil depth and sampling from planting to harvest. Soil N as influenced by soil depth, time of sampling, and fertilizer applications.
7841. Koala, S., J.R. Sims, H. El-Attar, and M. El-Halfawia. 1988. Phosphorus deficiency in semi-arid tropics and implications for grain legume production. p. 205-216.. IN: R.J. Summerfield (ed.). World Crops: Cool Season Food Legumes..