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Organic & Integrated Tree Fruit Production

Thursday, January 18, 2018

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Search results on 01/18/18

2984. Jacklin, A.W.. 1940. Annual Agronomy Report. North Idaho Area. USDA - SCS, Moscow, ID.
Sweetclover well suited as a soil building crop; best to plant with a grass to reduce erosion, reducing "burning" of first grain crop, improve quality of forage; have tried slender wheat grass, blue and Canada wild type; still looking for a good species; gypsum increased tonnage of tops, shortened tap root depth. T: yield, crop performance.

995. Bonnett, R.K. and H.W. Hulbert. 1922. Sweet clover. Id Agr. Expt. Sta. Circular #22.
More drought tolerant than red clover or alfalfa; biennial white is best for Idaho; value for hay and soil improvement; white yields 1T more hay than yellow; quality of hay better from yellow; well adapted to alkali soils; 15 lb/ac seeding; early seeding best, without nurse crop in drier areas; peas are best nurse crop; as a green manure, is expensive, decay is slow, depletes soil moisture; need to summerfallow after SC in the drier areas.

1998. Fletcher, O.S.. 1923. Growing sweetclover in Latah county.. V.Kaiser papers, box 1, folder 66.
Results of a survey of farmers using sweetclover; mostly interested in summer pasture; using biennial white; need firm seedbed, 10-15 lb seed/ac, early spring planting; mixed results with a nurse crop, less winterkill when planted alone; good results from inoculation; 1-2 1/2 T hay/ac the second year; following crops showed yield increase; no problem with weediness; most stock did well on sweetclover, except horses.

2190. Goldstein, W.A.. 1990. The potential of large-seeded sweetclover.. Michael Fields Agr. Institute, 3293 Main St., East Troy, WI 53120.
Sweetclover use declined rapidly in the 1960's due to the advent of nitrogen fertilizer, the use of 2,4-D, and the introduction of the sweetclover weevil (Sitona cylindricollis). At the time, breeding programs were underway, and 15 varieties were commercially available. Dr. Herman Gorz of the USDA-ARS at Lincoln, NE, did selection work on sweetclover and identified a large-seeded variety that may meet some of the needs today. The variety has high seedling vigor, can emerge from greater depths, can potentially be fall-seeded, matures earlier and may use less water, and is very competitive with weeds in its second year. It was also selected for resistance to pea and sweetclover aphids. A project is underway to renew evaluation of this germplasm and to test it in a living mulch system in the Great Plains.

2587. Hermann, W.. 1938. Comparison of height, yields and leaf percentages of certain sweetclover varieties.. WA Agr. Expt. Sta. Bull. #365.
Eleven varieties tested between 1930-37. For date of flowering, height, yield, and leaf percentages. Alpha 1, Madrid white. Madrid yellow, and Willamette white are recommended for general production and utilization in Wash. T: Date of flowering of varieties. Comparative first and second season heights. First and second season hay yields. First and second season leaf percentages.

2673. Holter, V.. 1978. Nitrogen fixation of four legumes in relation to above-ground biomass, root biomass, nodule number, and water content of the soil.. Oikos 31:230-235.
The study attempted to determine which plant characteristic was best correlated to acetylene reduction, and at what drought point it would stop. Four legumes were compared: vetch, red clover, -- clover, and black medic. All showed a drop in acetylene reduction around 8% water content on a clay soil. The correlation of various plant parameters with acetylene reduction was poor.

2784. Hulbert, H.W.. 1927. Sweetclover.. ID Agr. Expt. Sta. Bull. #147.
Biennial white is best forage, biennial yellow is too short; can handle alkaline soils; earlier seeding is best; 15 lb/ac seed, or 10 lb/ac in drier areas; nurse crop is risky, peas may be best; 3/4 T/ac hay first season, 2-3 T/ac second year; best used for pasture and soil improvement; can be grazed early spring through fall; improves soil quality, breaks up subsoil; sweetclover as green manure too expensive for dry areas; one system used is WW/SC planted in fall (unscarified seed) at 5 lb/ac; after wheat harvest, pastured SC into late fall; field is spring plowed and SF; then WW again, this raised WW yields 3-8 bu/ac; might try with Hubam (annual) SC.

3481. Kaiser, V.G. and A.W. Jacklin. 1939. Annual progress report for field test "effect of cropping systems".. USDA-SCS.
Better sweetclover stands when seeded alone or with grass; peas better than cereals; hi (>10 lb/ac) seeding rate leads to better stands; best seeding date April 10-May 7; more weeds in second year when grown with companion crop; sweetclover/grass mix gave greater wheat yield increase than SC alone, also had less erosion; excellent thorough study. T: Yield, erosion X agronomic management.

4201. McCalla, T.M. and J.C. Russel. 1948. Nitrate production as affected by sweetclover residues left on the soil surface.. J. Am. Soc. Agron., 40(5):411-421.

4921. Oien, David. no date. Black medic information packet.. Timeless Seeds, RR 3 Box 461, Conrad, MT 59425.
This packet is sent to growers who purchase seed. The seeding rate is recommended at 8-10 lb/ac, planted 1/2" deep into a firm seedbed. Field trials have indicated successful medic establishment with barley, oats, spring wheat, and flax as nurse crops, but a second year of medic growth is then necessary for adequate seed production. On-going experiments in Montana (Jim Sims, MSU) are examining several rotations: medic-cereal, sweetclover-cereal, fallow-ceral, and continuous cereal, with different nitrogen rates. Results indicate that the green manures used 1-3" more soil moisture than the other treatments. Wheat yields after medic and sweetclover (25 bu/ac) were significantly higher than all other treatments. An herbicide screening tested a number of alfalfa herbicides on black medic. Poast, Fusilade, Treflan, and Kerb did not injure medic, while paraquat, Pursuit, and 2,4-DB ester caused minor injury. Solicam provided the best overall weed control with little injury to the medic.

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