Browse on keywords: fertility nitrogen water use
Search results on 01/18/19
1608. Doneen, L.D.. 1934. Nitrogen in relation to composition, growth and yield of wheat.. WA Agr. Expt. Sta. Bull. #296.
On soil with adequate N, adding sodium nitrate retarded wheat growth. The carbohydrate - N ratio of plant tissue was not affected by fertilizer treatment or variety. Under extreme conditions (e.g. variations in N or moisture) there were considerable differences in varietal adaptations. The addition of N after normal tillering caused production of new tillers and increased yields. Fall fertilization led to higher water use and spring moisture deficit. T: many tables. e.g.: Composition of total sugar, non-coagulate nitrogen, amino N, and nitrate on wheat grown under various soil treatments. Yield of grain and straw of wheat treated with sodium N. N removed from soil by grain and straw of wheat treated with different amounts of sodium N/ac. Yield of grain and straw of wheat treated with 500 lb. sodium N/ac.
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.