Alfalfa ("Medicago Sativa" L.) Production as Influenced by Variety, Fertility, and Harvest Management Factors PDF Download

Author: John William Price
Publisher:
ISBN:
Category :
Languages : en
Pages : 182

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Author: Michael Baidoo
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 230

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Phosphorus (P) and potassium (K) have been well documented as key essential nutrients to increase alfalfa (Medicago sativa L.) production. However, other interrelated factors including cultivar, harvesting schedules, and relative levels of soil K, calcium (Ca), and magnesium (Mg) can influence response of alfalfa to P and K. With the current increasing trend of fertilizer prices and under conditions of nutrient availability and uptake, productivity and profitability of alfalfa in response to P and K applications is yet to be further explored. Five different experiments were conducted to (a) determine the influence of K, cultivar, and harvest time on productivity of new alfalfa stands, (b) evaluate K and harvest time effects on forage production of old alfalfa stands, (c) investigate the impacts of P and K in association with Ca and Mg, and harvest management on alfalfa, (d) ascertain the impacts of P and K in combinations with Ca and Mg, and harvest management on alfalfa under controlled environments, and (e) assess the economic returns of P, K, Ca, and Mg fertilization on alfalfa under different harvest systems. Treatments were (a) Field study one: four K rates (0, 56, 112, and 168 kg K2O ha−1), two cultivars (“Hi-Gest 360”; “AFX 457”), and two harvest times (early harvest, late bud to early [10%] bloom; late harvest, 7 days after early harvest) with four replications, (b) Field study two: six K rates (0, 56, 112, 168, 224, and 280 kg K2O ha−1) and two harvest times (early harvest, late bud to early [10%] bloom; late harvest, 7 days after early harvest) with four replications, (c) Field study three: 18 selected combinations rates of three P (0, 34, and 67 kg P2O5 ha−1), three K (0, 168, and 336 kg K2O ha−1), two Ca (0 and 560 kg CaO ha−1), and two Mg (0 and 56 kg MgO ha−1); and two harvest times (early harvest, late bud to early [10%] bloom; late harvest, 7 days after early harvest) with three replications; and (d) Greenhouse study: six selected combinations rates of two P (0 and 67 kg P2O5 ha−1), two K (0 and 336 kg K2O ha−1), three Ca (0, 4483, and 8967 kg CaO ha−1), and three Mg (0, 448, and 897 kg MgO ha−1); and two harvest times (early harvest [30 to 40 growth days], late harvest [7 days after early harvest]) with five replications. For each study, the respective treatments were organized in factorial arrangement in a randomized complete block design. For new alfalfa stands, there was a linear (P

Author: Richard Paul Walgenbach
Publisher:
ISBN:
Category :
Languages : en
Pages : 188

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Author: Dale Arden Schlough
Publisher:
ISBN:
Category :
Languages : en
Pages : 62

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Author: Kurt Cornett Feltner
Publisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 210

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Author: D. J. Undersander
Publisher:
ISBN: 9780891181798
Category : Alfalfa
Languages : en
Pages : 0

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The Alfalfa Management Guide is designed especially for busy growers, with to-the-point recommendations, useful images of diseased plants and pests, and quick-reference tables and charts. Revised in 2011, this edition of Alfalfa Management Guide covers the latest strategies for alfalfa establishment, production, and harvest-soil testing, fertilizing, integrated pest management, rotation, and more.

Author: Madhat M. Al-Hassani
Publisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 120

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A field study was conducted in the Willamette Valley near Corvallis, Oregon, to determine the influence of seedling rate, drill row spacing, grass association, and variety on the yield of dry matter and quality (crude protein content and leafiness) of alfalfa. Treatments included seeding rates of 7.5, 10, 15 and 20 pounds per acre in various combinations with row spacings of 3, 6 and 12 inches. Orchardgrass (Dactvlis glomerata L.) was included tn three treatments. Complete data were obtained for three harvests and yield data only for an aftermath harvest. Alfalfa varieties were Vernal and DuPuits. Plant population and stem numbers per unit area increased with increasing seeding rates and with closer row spacing, but stem size, dry weight of the stems, leafiness and crude protein were not affected by seeding rate or row spacing. Grass grown in association with alfalfa did not influence any of the characteristics studied except for an increase in stem size at second harvest and increased protein content of the alfalfa at first harvest. Vernal and DuPuits yielded the same weight of dry material for the season. Vernal maintained a higher plant population, more stems per square foot at each harvest and a higher percentage of leaves than DuPuits. Stem size and weight and crude protein content of whole plants was higher in DuPuits than in Vernal. Both varieties decreased in yield, plant population, stem size and stem weight with each successive cutting. Stem number per square foot and per plant increased with each successive cutting. It was concluded that seedling rates from 7.5 to 20 pounds per acre and row spacings up to 12 inches had very little influence on quantity and quality of alfalfa hay production.

Author: Edward Raymond Jones
Publisher:
ISBN:
Category :
Languages : en
Pages : 112

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Author: Francis Henry Berns
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 604

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