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Row spacing and nitrogen: effect on alfalfa-bermudagrass quality components

Stringer, William C. ; Morton, Benjamin C. ; Pinkerton, Bruce W.

Agronomy journal, 1996-07, Vol.88 (4), p.573-577 [Periódico revisado por pares]

Madison, WI: American Society of Agronomy

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Título:
Row spacing and nitrogen: effect on alfalfa-bermudagrass quality components
Autor: Stringer, William C. ; Morton, Benjamin C. ; Pinkerton, Bruce W.
Assuntos: abonos nitrogenados ; Agronomy. Soil science and plant productions ; aliment pour animaux ; application rates ; Biological and medical sciences ; calidad ; carolina del sur ; caroline du sud ; crop yield ; crude protein ; cultivo mixto ; culture en melange ; cynodon dactylon ; dietary fibres ; dose d' application ; dosis de aplicacion ; engrais azote ; espacement ; espaciamiento ; feed grasses ; feeds ; fibra de la dieta ; fibre alimentaire ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; gramineas forrajeras ; graminee fourragere ; loam soils ; medicago sativa ; mixed cropping ; monocultivo ; monoculture ; Nitrogen fertilization ; nitrogen fertilizers ; Nitrogen, phosphorus, potassium fertilizations ; oversowing ; piensos ; proteina bruta ; proteine brute ; qualite ; quality ; rendement des cultures ; rendimiento de cultivos ; sandy soils ; sobresiembra ; Soil-plant relationships. Soil fertility. Fertilization. Amendments ; sol sableux ; sol sablolimoneux ; south carolina ; Sowing and planting ; spacing ; suelo arenoso ; suelo franco ; sursemis ; textural soil types ; tipos texturales de suelos ; type de sol textural ; Vegetative propagation. Sowing and planting. Harvesting
É parte de: Agronomy journal, 1996-07, Vol.88 (4), p.573-577
Notas: F
F08
Contribution of the South Carolina Agric. Exp. Stn. Journal no. 4127.
Descrição: Interseeding legumes into grass sods increases herbage quality. Interseeding alfalfa (Medicago sativa L.) into bermudagrass [Cynodon dactylon (L.) Pers.] has given yields comparable to grass fertilized with high rates of N. Our objective was to compare forage quality attributes of N-fertilized bermudagrass with alfalfa-bermudagrass mixtures. N rates of 0, 112, 224, and 448 kg ha-1 were applied to bermudagrass monoculture and to alfalfa interseeded into bermudagrass at 20-, 40-, and 60-cm row spacings. Experiments were conducted on a Cecil sandy clay loam (clayey, kaolinitic, thermic Typic Kanhapludult) and a Norfolk sandy loam (fine-loamy, siliceous, thermic Typic Kandiudult) site. Hand-harvested herbage samples were separated into botanical components. Crude protein, acid-detergent fiber and neutral-detergent fiber were measured using a combination of wet-lab and near infrared reflectance spectroscopy (NIRS) procedures. Nitrogen increased the crude protein in bermudagrass monoculture by 11 to 61 g kg-1. The crude protein response of bermudagrass in mixtures to N was slight to nonsignificant. Increasing row spacing of alfalfa reduced grass crude protein by 9 to 23 g kg-1 and had no effect on alfalfa crude protein. Fiber fractions decreased slightly in grass with added N, but fiber in alfalfa was not influenced by any treatment. Yield of crude protein increased with N, particularly in bermudagrass monoculture, but interseeding alfalfa without N produced crude protein yields that usually exceeded those of bermudagrass monoculture at the 448 kg ha-1 N rate. Interseeded alfalfa, even at wide row spacings, appears to produce enough biological N to replace 448 kg fertilizer N ha-1 or more in the production of herbage protein in bermudagrass.
Editor: Madison, WI: American Society of Agronomy
Idioma: Inglês

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Row spacing and nitrogen: effect on alfalfa-bermudagrass quality components

Stringer, William C. ; Morton, Benjamin C. ; Pinkerton, Bruce W.

Madison, WI: American Society of Agronomy

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