Integrating Cotton and Beef Production to Reduce Water Withdrawal from the Ogallala Aquifer in the Southern High Plains

Allen, V. G.; Brown, Claire; Kellison, Rick; Segarra, Eduardo; Wheeler, T.; Dotray, Peter A.; Conkwright, J. C.; Green, C. J.; Acosta-Martínez, Verónica

doi:10.2134/agronj2005.0556

Cited by 90 publications

(113 citation statements)

References 11 publications

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“…After upland rice harvesting, perennial forage, such as Panicum maximum, Brachiaria brizantha or B. ruziziensis, could be introduced to achieve a great amount of cover crop in the beginning of the following rainy season and to cultivate another cash crop. Allen et al (2005) observed a higher cotton yield under forage species than cotton monoculture. Kluthcouski et al (2000) obtained higher corn, soybean and common bean yields using straws of Panicum maximum and B. brizantha.…”

Section: Upland Rice Yieldmentioning

confidence: 90%

Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Nascente

Crusciol

2013

Sem. Ci. Agr.

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The use of cover crops in no-tillage systems (NTS) increases the levels of organic matter and could increase the nitrogen content of the soil, contributing to reduce fertilizers costs. The knowledge of these processes is fundamental for deciding whether cover crops can be effectively incorporated into the agricultural production system. The objective of this study was to evaluate the effect of cover crop species on the levels of nitrate and ammonium in the soil in early upland rice development, as well upland rice yield. A field experiment was performed and treatments consisted of growing rice on five cover crops (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, millet and fallow) in an NTS and two control treatments (Brachiaria brizantha and fallow) under a conventional tillage system, CTS, (one plowing and two disking). The experimental design was a complete randomized block with three replications. The soil samples were collected during a period of six weeks (0, 7, 14, 21, 28 and 35 days in relation to upland rice sowing). The cover crops Brachiaria brizantha, Panicum maximum and Brachiaria ruziziensis in the NTS and B. brizantha fallow incorporated into the CTS favored higher levels of nitrate in the soil. In contrast, B. brizantha and fallow in the CTS and millet and P. maximum in the NTS favored the buildup of high levels of ammonium in the soil. The treatments under the plowed cover crops millet and fallow allowed for a higher upland rice yield. The tillage system and nature of the cover crops could be used to achieve the desired levels and forms of nitrogen in soil. Key words: Brachiaria brizantha, Brachiaria ruziziensis, Panicum maximum, millet, fallow, soil management ResumoO uso de plantas de cobertura no sistema plantio direto (SPD) aumenta os níveis de matéria orgânica e pode ajudar a aumentar os teores de nitrogênio no solo contribuindo para reduzir os custos de fertilizantes. O conhecimento desse processo é fundamental para que as plantas de cobertura possam ser efetivamente incorporadas aos sistemas de produção agrícola. O objetivo deste estudo foi avaliar o efeito de espécies de plantas de cobertura nos níveis de nitrato e amônio no solo durante o desenvolvimento inicial do arroz de terras altas, bem como a produtividade do arroz. Um experimento de campo foi realizado e os tratamentos consistiram de cultivo de arroz sobre cinco plantas de cobertura (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, milheto e pousio) no SPD e mais dois tratamentos controle (Brachiaria brizantha e pousio) no sistema de plantio convencional, PC (uma aração e duas gradagens). O delineamento experimental foi em blocos completos casualizados com três repetições. As amostras de solo foram coletadas por seis semanas (0, 7, 14, 21, 28 e 35 dias em relação à semeadura do

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Section: Upland Rice Yieldmentioning

confidence: 90%

Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Nascente

Crusciol

2013

Sem. Ci. Agr.

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“…where potential ADG is a maximum potential value of ADG, which we set at 0.86 kg/day, slightly lower than the observed maximum season-long values for steers grazing OWB and small grains [17], since small grains are higher quality than OWB.…”

Section: Cattle Growthmentioning

confidence: 95%

“…The Southern High Plains (SHP) of North America was covered by grasses and grazed by wild herbivores before European settlement converted much of the land to annual crops, and returning Southern High Plains land to perennial grasses is compatible with objectives of soil and water conservation [1]. The perennial grass, "WW B. Dahl", an old world bluestem (OWB), has been used for this purpose [1], and is well-suited for dryland cultivation on the Southern High Plains [2].…”

Section: Introductionmentioning

confidence: 99%

“…The perennial grass, "WW B. Dahl", an old world bluestem (OWB), has been used for this purpose [1], and is well-suited for dryland cultivation on the Southern High Plains [2]. As the Ogallala Aquifer, which provides much of the irrigation water on the SHP, reaches the end of its productive life, farmers and other agricultural producers who rely on Ogallala water need more complete information on dryland production alternatives.…”

Section: Introductionmentioning

confidence: 99%

“…Martin [10] simulated OWB and stocker steer production based on data from Allen et al [1], but restricted her simulation to 10 years, somewhat limiting the resulting yield distributions. Mean stocker gain was 283 kg/ha.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Bioeconomic Model for Sustainable Grazing of Old World Bluestem under Uncertainty

Benson¹,

Zilverberg²

2013

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"WW B. Dahl", a perennial old world bluestem (OWB) grass, has been promoted as a forage suitable for dryland grazing. Dryland grazing of OWB is however inherently risky economically and ecologically, and may not be sustainable while remaining profitable. In this paper, we develop a biological and economic single-season model of dryland grazing given production and price uncertainty, and identify a stocking rate that maximizes expected net revenue, subject to a sustainability constraint. We then simulate the distribution of net revenues, and find that probability of loss is greater than 35%, and median profit is roughly $30/ha.

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Water‐ and Nutrient‐Use Efficiency in Food Production in South America

Fageria¹,

Stone²

2013

Improving Water and Nutrient‐Use Efficiency in Food Production Systems

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Integrating Cotton and Beef Production to Reduce Water Withdrawal from the Ogallala Aquifer in the Southern High Plains

Cited by 90 publications

References 11 publications

Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

A Bioeconomic Model for Sustainable Grazing of Old World Bluestem under Uncertainty

Water‐ and Nutrient‐Use Efficiency in Food Production in South America

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