Browse on keywords: fertility MT
Search results on 12/12/13
3070. Tanaka, D.L. and J.K. Aase. 1989. Influence of topsoil removal and fertilizer application on spring wheat yields.. Soil Sci. Soc. Am. J. 53:228-232.
In 3 of 5 years, soil removal treatments reduced spring wheat yields an average of 9, 28, and 45% for 0.06, 0.12, and 0.18 m soil removal treatments, respectively, over all fertilizer treatments. The data suggest that P was the most limiting nutrient and additions of N fertilizer without P resulted in small yield increases.
7850. Koala, S.. 1982. Adaptation of Australian ley farming to Montana dryland cereal production.. M.S. Thesis, Dept. of Plant and Soil Sci., Montana St. Univ., Bozeman, MT 59717.
This study examined the potential to adapt the ley farming system used in Australia to dryland cereal production in Montana. The ley system alternates a grain crop with a self-seeding forage legume. The legumes tested in this study included 5 Australian medics, 7 subclovers, 2 lupins, fababean, and a native Montana black medic. One full cycle of the system was completed. All grain yields (spring wheat) were higher after the legumes than after fallow. Soil water to 120 cm was similar in all plots at wheat planting. The black medic treatment had the highest water use efficiency (100 kg grain/cm) and fallow the lowest (55 kg grain/cm). There were higher levels of soil nitrate after the legumes than after fallow. Re-establishment of the legumes after wheat ranged from 3 to 93% ground cover, with black medic being the highest. Overall, black medic from Montana performed best in this study.
7878. Lockerman, R.H., D.A. Buss, G. Westesen, and J.R. Sims. 1985. The effect of soil moisture on growth and yield of fababean.. FABIS 11:15-17.
7885. McGuire, C., R. Lockerman, R. Speilman, L. Welty, L. Prestbye, R. Engel, J. Sims, and J. Bunker. 1989. Nitrogen contribution of annual legumes to the grain protein content of Clark barley production.. Applied Agric. Res. 4:118-121.
7893. Sims, J.R.. 1978. Predicting nitrate accumulation in fallowed soils.. Agronomy Abstracts p. 162, Amer. Soc. Agron., Madison, WI.
7972. Sims, J.R., M.K. Muir, and A.E. Carleton. 1968. Evidence of ineffective Rhizobia and its relation to the nitrogen nutrition of sainfoin (Onobrychia viciaefolia).. IN: C.S. Cooper and A.E. Carleton (eds.). Sainfoin Symposium. MT Agr. Expt. Sta. Bull. 627.
8036. Welty, L.E. and L.S. Prestbye. 1988. Standing vs. disc-down green manure systems.. Agronomy Abstr. p. 142. Amer. Soc. Agron., Madison, WI.
8064. Welty, L.E., L.S. Prestbye, R.E. Engel, R.H. Lockerman, R.S. Speilman, J.R. Sims, R.A. Larson. 1988. Nitrogen contribution of annual legumes to subsequent barley production.. Applied Agric. Res. 3:98-104.
9650. Jacobsen, J.S.. 1989. Fertilizing soils, not fields in semiarid regions.. Agronomy Abstracts, p. 316. Amer. Soc. Agron., Madison, WI.
Fertilizer management has traditionally treated farm fields as homogeneous units. Many fields however, contain two or more soils with different crop yield potentials and chemical properties. Identification of soil management units within a field and implementing novel fertilization practices to match soil productivity differences would potentially improve efficiency.