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Organic & Integrated Tree Fruit Production

Tuesday, September 25, 2018

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3607. Klages, K.H. and R.H. Stark. 1949. Grass and grass seed production.. ID Agr. Expt. Sta. Bull. #273.
Lists hay and seed yields of special grasses; discusses stand configuration; N fertilization; adaptation of different grasses.

2898. Idaho Agr. Expt. Sta.. 1940. Annual Report. ID Agr. Expt. Sta. Bull. #236.
Borax gave yield increase in alfalfa on cut-over land in north Idaho - 50% yield increase in second year from a 40 lb/ac application.

3418. Jordan, J.V. and G.O. Baker. 1959. Sulfur uptake and residual studies in northern Idaho using radiosulfur.. ID Agr. Expt. Sta. Research Bull. #42.
Compared plant uptake of S from gypsum, ammonium sulfate, ferrous sulfate, elemental S and green manure peas. Better utilization from gypsum than from elemental S. Green manure was as effective as inorganic sources. S fertilizer increased protein content of alfalfa and peas.

4022. Mahler, R.L.. 1990. Nitrogen database project - final report.. unpublished report for Dryland Cereal/Legume LISA project.
This project had two components: 1) development of a comprehensive database on winter wheat response to nitrogen fertilizer rates; 2) evaluation of the potential of peas, alfalfa, and wheat straw as nitrogen sources for a following wheat crop in rotation. The database study examined winter wheat yield response to 41 nitrogen rates. When soil test N + mineralizable N + fertilizer N ranged from 101 to 175 kg/ha, a requirement of 2.75 lb N per bushel of wheat was calculated. This agrees with the figure calculated by Leggett in the 1950's, indicating that modern varieties have not changed in their basic nitrogen requirement, when nitrogen fertilizer efficiency is assumed to be 50%. At total available N rates greater than 175 kg/ha, the N requirement per bushel of wheat increased dramatically. Low rates did not show a large increase in efficiency on a per bushel basis. At Moscow, N fertilizer application rates less than 95 kg/ha resulted in greater than 50% N use efficiency. Efficiency declined rapidly at rates above this. The green manure study compared alfalfa, pea, and green wheat straw residues applied at 1, 2, and 3 mt/ha. In general, higher rates of pea and alfalfa resulted in higher wheat yields. The highest yields were with the high rate of pea residue. It was more effective than alfalfa residue, probably due to faster decomposition. Alfalfa provided more N per ton of residue (31 kg/mt) than the peas (29 kg/mt), while straw added 19 kg/mt.

4302. McDole, R.E., R.W. Harder, and J.P. Jones. 1978. North daho fertilizer guide - Alfalfa.. ID Agr. Expt. Sta. CIS #447.
Describes crop needs for P,K,S and micronutrients.

4377. McKay, H.C. and W.A. Moss. 1949. High protein wheat with conservation farming.. U. of Idaho Extension Bull. #181.
Emphasize need for legume - grass rotation to maintain soil productivity. Suggest a 7 yr sweet clover rotation or a 9 yr alfalfa rotation. Yellow sweet clover plus mountain bromegrass or slender wheatgrass; Ladak alfalfa plus smooth brome and big bluegrass (high rainfall) or crested wheatgrass (low rainfall); early spring seeding recommended without nurse crop; methods of establishment, plow sweetclover at 12-22" height; use sweetclover as a surface mulch to prevent erosion. T: soil moisture and sweetclover growth; wheat after sweetclover; yield and protein.

4621. Muehlbauer, F.J. and R.F. Dudley. 1974. Seeding rate and P placement for Alaska peas in the Palouse.. WSU Coop. Ext. Bull. #794.
Studied seeding rate and placement; optimum seeding rate seemed to be 150 lb.ac; when soil P was higher than 4.8 ppm, no yield response; banded P was effective when soil test was low. T: seeding rate, P fertilization.

4982. Painter, C.G. and G.O. Baker. 1960. A guide for fertilizing Idaho farm crops.. ID Agr. Extension Serv. Bull. #325, Combined Series.
First guide (?) published; 1958 - 100,000 T of commercial fertilizer used in Idaho; fertilizer not a cure-all; irrigated and dryland recommendations; wheat (annual crop zone) after fallow 30N, after green manure 0N, after grain 50N, after peas 40N; wheat (fallow zone) after fallow 20N, after green manure 0N, after grain 30N; wheat (tetonia) N not generally needed. T: fertilizer recommendations.

6545. Smith, V.T.. 1948. Green manure crops for Idaho farms.. U. of Idaho Ext. Circ. #105.
Estimates legume N contribution and dollar value: alfalfa - 260 lb N, $40/ac; sweetclover - 160 lb N, $24/ac; clover - 140 lb N, $21/ac; peas/beans - 50lb N, $7/ac; green manure provides nitrogen, improved soil condition, organic matter; results from 10 yr experiment; grow legume seed for cash crop.

8522. Kephart, K.D. and G.A. Murray. 1989. Nitrogen, phosphorus, and moisture effects on acclimation of winter peas.. Can. J. Plant Sci. 69:1119-1128.
Increased residual soil nitrogen and compaction-related waterlogging problems may relate to observed reductions in Austrian winter pea winter survival by influencing cold tolerance development. Increased nitrogen reduced survival, while phosphorus had no influence. Higher moisture was correlated with higher lethal temperatures.

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