effect of stand density on yield of irrigated alfalfa in central Oregon by Bill Murphy Download PDF EPUB FB2
The effect of stand density on yield of irrigated alfalfa in central Oregon Public Deposited. Alfalfa -- Yields -- Oregon -- Redmond; Subject: Special report (Oregon State University. Agricultural Experiment Station) Scholars Archive is a service of Oregon State University Libraries & Press.
The Valley Library Corvallis, Author: Bill Murphy, M. Johnson, Rodney Vance Frakes. mum yields of alfalfa under irrigation in Central Oregon. If a stand has a density of less than 2 plants per square foot, it should not be maintained in production.
In terms of current hay prices ($65 per ton), the farmer who maintains a low-density stand of alfalfa in Central Oregon loses $ income per acre each year. LITERATURE CITED 1. The single factor most affecting profitability of alfalfa is yield.
This can be seen in the graph at the right which depicts economic data from the Green-Gold program (a third party verified measured yield and quality program) the Wisconsin Forage council used to run.
Abstract. Published July Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension. that alfalfa could be harvested in the fall ‘when ready’ (alfalfa regrowth under the canopy is ” in height). The objective of this research was to determine the feasibility of a fall harvest ‘when ready’ and its effects on stand, yield, and quality of alfalfa.
ProceDures Three experiments were planted in Fargo, ND. Experiment 1 was. Maximum yield. Alfalfa - San Joaquin Valley. 30 35 40 0 2 4 6 8 10 12 Crop evapotranspiration (inches) Alfalfa yield (tons per acre) FIguRE Effect of seasonal evapotranspiration on alfalfa yield for the San Joaquin Valley of California (Grimes et al.
that is evaporated into the atmosphere as a result of producing a crop. The results for yield and stand maintenance have been reported previ-ously (4). Results are reported here for stem size, weight, stems per plant, leafiness, and crude protein content.
LITERATURE REVIEW Most studies with alfalfa seeding rates have dealt with yield and stand rather than with quality factors. In one study of factors affecting. growth in Central Oregon. In a soil-test survey of 42 Central Oregon alfalfa fields, 12 percent had potassium levels lower than ppm (17).
Almost all soils in the area require annual sulfur applications. Although only 5 pounds of sulfur are needed to produce 1 ton of alfalfa hay, sulfur (S) leaches from Central Oregon soils.
Effect of autotoxicity on alfalfa stands when alfalfa is seeded (a) immediately following alfalfa plowdown, (b) 4 weeks later, and (c) after 1 year.
b c a 0 weeks 2 weeks 4 weeks fall-killed after corn number of plants/ft 2 0 10 20 30 40 50 0 weeks 2 weeks 4 weeks fall-killed after corn yield (% of check variety) 0 20 40 60 80 plowed no-till. Previous studies on mid-summer deficit irrigation of alfalfa showed that no irrigation during the midsummer reduced the alfalfa yield, but did not stop all plant growth (Frate et al.,Guitjens,Ottman et al.,Putnam et al.,Robinson et al., ).
As a result, some evapotranspiration occurred during the period of deficit. Yield and stand survival depend on an adequate supply of potassium.
Follow the soil test recommendation in your area. Sulfur Alfalfa uses 4 to 5 pounds of sulfur per ton of dry matter yield. Follow Oregon State University’s soil fertility recommendations in your area.
Lime The optimum soil pH for alfalfa is to Apply lime if soil pH. percent. Sulfur may increase protein content in alfalfa but may not increase yield. Where needed, annual applications of 30 to 40 pounds of sulfur per acre are suggested for irrigated alfalfa.
The use of pounds of sulfur per acre once every three years should provide adequate amounts of this nutrient for dry-land alfalfa. marketing and price, as well as yield and stand life. Demands for high-quality alfalfa by the marketplace have been relentless.
Although crop yield is still the primary economic factor deter-mining forage crop value per unit of land area, forage quality has become a close second.
Milk production per dairy cow has more than doubled in. increase yield and stand longevity. However, to maximize production The amount of fertilizer an alfalfa stand needs to provide high yield and good persistence depend on the soil’s current nutrient status This root density pattern was similar in all fertility treatments.
Figure 6. Effect of Cover Crop Competition on Alfalfa Yield 0 t D r l e d w i t o as t l O a ts r l a ge n th a s Conventional oat nurse crop Roundup oat takeout Alfalfa yield in year following seeding with Italian ryegrass cover crop at different rates Fig 4.
Alfalfa yield in year following seeding. In a stand of alfalfa-bromegrass, Marten et al. (8) found no significant differences in yields of plots containing 2, 4, 6, 8, 10, or 12 plants per square foot.
Murphy et al. (11) concluded that 4 to 8 plants per square foot were required for optimum production of irrigated alfalfa in central Oregon. Their stand of1, 2, 4, or 8 plants per. Alfalfa Harvest & Yield per Acre. 9.) Alfalfa Crop Rotation.
) Q&As Alfalfa. Do you have experience in Alfalfa cultivation. Please share your experience, methods and practices in the comments below. All the content you add will be soon reviewed by our agronomists. Once approved, it will be added to and it will influence.
Alfalfa typically contributes large amounts of nitrogen (N) to subsequent corn crops. The size of this N contribution is affected by the age of alfalfa stands at termination.
However, alfalfa stand age is not used in current guidelines from the University of Minnesota. Most university guidelines are based on stand density at termination and corresponding book-value N credits that should be.
The best evidence of this is the multi-year, whole-field Wisconsin Alfalfa Yield and Persistence Program to determine actual yields of non-irrigated alfalfa over the age of the stand.
Over a decade, the project followed 80 fields for one to four years, determining yield. Effect of alfalfa on yields ofoats 19 Effect of manure as compared with alfalfa on yields of oats 21 Results of the different treatments summa- rized 23 Influence on sugar beet yields of pasturing other crops in rotations 33 Yield diiferences expressed as percentages— 35 Summary 37 Literature cited 39 INTRODUCTION It is essential to a.
alfalfa stand, impacting production for many years. Time spent planning and preparing for stand establishment pays off in many ways, resulting in a dense, vigorous stand that pro-duces high-quality, high-yielding alfalfa throughout the life of the stand.
If a stand fails to establish, replanting requires addi-tional time and expense. Irrigated alfalfa yields also decreased with stand age at Carrington (Table 3.) First-year productivity averaged ton/acre greater than second-year and tons/acre greater than third-year.
Note that in a stand was winterkilled, but the zero yield was not included in the average, and the. In late August, alfalfa seed is planted at 20 pounds per acre at a depth of 1/4 to 1/2 inch. The grower plants with a grain drill and pulls a cultipacker for better seed-to-soil contact.
Stand life in the region is five to eight years. This study assumes stand life of six years. Irrigation. Irrigation of the alfalfa begins immediately after. Harvesting 10 tons of alfalfa per acre each year is a lofty goal. Whether you aim for this target or you aspire to achieve your farm’s highest yields, doing so begins by successfully establishing a robust alfalfa stand of top-end genetics in high-fertility fields.
Previous forage research on alfalfa varieties yield repsonse under 3-cut and 4-cut harvest management, and spring cereal forage varieties for central Oregon and winter cereal forage varieties for central Oregon was published in the Central Oregon Ag Research Center Annual Report and results have been presented at various producer meetings.
of a chapter series on Irrigated Alfalfa Management published by the University of California Alfalfa & Forage Systems Workgroup. Citation: Orloff, S. Choosing appropriate sites for alfalfa production. In C. Summers and D. Putnam, eds., Irrigated alfalfa management for Mediterranean and Desert zones.
Chapter 2. tion water applied to alfalfa in the Klamath Basin and Sacramento Valley of California by Putman et al. () with few long term impacts to alfal-fa stand. However, in areas with sandy soils and more arid, hotter climates, summer termination of irrigation can reduce alfalfa stands and yield af-ter irrigation is resumed (Ottman et al, ), but.
Lack of consistent yield response across seeding rates indicates the plasticity of alfalfa and bermudagrass growth between low and high alfalfa plant densities. Results suggest that a minimum alfalfa seeding rate should be 20 lbs per acre, but higher rates improve plant and stem density for potential stand persistence.
Fertilizing Alfalfa: Soil testing is the only way to determine the fertility status and pH of your soil. Soil test readings (in pounds per acre) of at least 65 for phosphorus (P) and for potassium (K), along with a soil pH near seven, are considered essential for alfalfa production.
Yield of alfalfa will be significantly decreased and productive stand life shortened if these essential. alfalfa varieties in Kansas. Extremely hardy varieties generally demonstrate lower yield potential. Varieties adapted to the northern United States produce lower yields in Kansas because they are slower to resume growth in the spring, recover slowly after cutting, and go dormant early in the fall.
There are three major alfalfa types from which all. • Irrigating Alfalfa in California with Limited Water Supplies. About 1, acres of alfalfa are irrigated in California. This large acreage coupled with a long growing season make alfalfa the largest agricultural user of water, with annual water applications of 4, to 5, acre-feet.USDA National Agricultural Statistics Service Information.
NASS publications cover a wide range of subjects, from traditional crops, such as corn and wheat, to specialties, such as mushrooms and flowers; from calves born to hogs slaughtered; from agricultural prices to land in farms. The agency has the distinction of being known as The Fact Finders of U.S.
Agriculture due to the abundance of.Alfalfa stand assessment: Is this stand good enough to keep? dry matter yield (tons/acre) 6 5 4 3 2 1 0 7. stems per square foot. 0 10 20 30 40 50 60 70 yield = ( * stems) + Figure 1. Alfalfa stem count and yield potential.
Table 1. Rating alfalfa crown and roots rating condition winter survival. rating.