Organic Versus Conventional Methods of Fertilization and Weed Control in a Long Term Rotation of Cereals in Semiarid Spain

Sanclemente, Gabriel Pardo; Aibar, J.; Ciria, P.; Lacasta, C.; Lezáun, Juan Antonio; Zaragoza, C.

doi:10.4067/s0718-58392011000200002

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…In this line, Pardo et al . () indicated that the nutrient content increases for legume rotations in semi‐arid conditions, and we found similar results (Table ) (the nutrient contents increased for OF especially in LV and LP). For subsoil horizons (Bt and C), the SOC‐S was higher in all studied soils in OF (Table ).…”

Section: Resultssupporting

confidence: 86%

“…Furthermore, in soils under no till, crop residues are deposited on the soil surface, with slower decomposition as a result of drier conditions and reduced mineral nutrient availability. In this line, Pardo et al (2011) indicated that the nutrient content increases for legume rotations in semiarid conditions, and we found similar results (Table III) (the nutrient contents increased for OF especially in LV and LP). For subsoil horizons (Bt and C), the SOC-S was higher in all studied soils in OF (Table IV).…”

Section: Soil Organic Carbon and Total Nitrogen Stockssupporting

confidence: 86%

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Management Effects on Soil Organic Carbon Stock in Mediterranean Open Rangelands—Treeless Grasslands

2014

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Soil organic carbon (SOC) is subject to relatively rapid changes. In grasslands soils, the management system influences these changes. Therefore, these soils play a crucial role in climate change mitigation. Current research has developed strategies and methodologies to help us understand their role as a carbon sink. In this study, the SOC and total nitrogen contents and stocks (SOC‐S) and their variation with depth were evaluated in annual crop rotations (cereal–fallow). Fifty soil profiles were sampled in the Los Pedroches Valley (southern Spain). This area consists of Mediterranean open rangelands—treeless grasslands with cereal–fallow rotation, under two management systems: long‐term (20 years) organic farming (OF) and conventional tillage (CT). The studied soils were Cambisols (CM), Leptosols (LP) and Luvisols (LV). The objective of this research was to determine any management system effects (OF vs CT) on SOC and total nitrogen contents and stocks and their variation with profile depth. It was observed that SOC concentration decreased with depth (Ah–Ap > Bw > C). The SOC concentration was higher in the top soil for all studied soils in OF compared with CT. The highest totals of SOC‐S were found in LV‐OF (66·01 Mg ha−1) and the lowest in LP‐CT (21·33 Mg ha−1). Significant differences (p < 0·05) between soils types and management practices were found in carbon stocks, increasing the SOC‐S in OF compared with that in CT in all studied soils; this increase was 75·25%, 85·73% and 234·88% for CM, LV and LP, respectively. The results indicated that management practices significantly influence SOC‐S in the Los Pedroches Valley and, consequently, OF in annual crop rotations (cereal–fallow) is an excellent alternative to CT that increases the SOC content in Mediterranean open rangelands—treeless grasslands environments. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Resultssupporting

confidence: 86%

Section: Soil Organic Carbon and Total Nitrogen Stockssupporting

confidence: 86%

Management Effects on Soil Organic Carbon Stock in Mediterranean Open Rangelands—Treeless Grasslands

2014

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“…Integrated production deploys biological pest control as a useful tool for decreasing the use of pesticides and making production more environmental-friendly, and it is used by over 80% of growers. Today, farmers are increasing their interest in introducing a next step in ecological production, moving toward organic farming, being aware that a reduction in agrochemicals can improve the sustainability of the system (Pardo et al 2011). However, the strict EU organic farming and production regulation in effect since 1991 requires a considerable effort.…”

Section: Introductionmentioning

confidence: 99%

Effect of Organic and Synthetic Fertilizers on the Crop Yield and Macronutrients Contents in Soil and Pepper

Ortega

Meca²,

Gázquez³

et al. 2016

Communications in Soil Science and Plant Analysis

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Nowadays farmers are interested in moving to organic cultivation. The purpose of this experiment was to compare two organic, with or without effective microorganisms (EM), and one conventional greenhouse pepper cropping systems. We focused on the study of the macronutrients nitrogen, phosphorus, and potassium (N, P, K) concentrations in leaves plants, soil, and soil solution during the full production cycle to detect any plant nutrient deficiencies and differences in crop yield for the three different treatments. Foliar analyses showed good concentrations of nutrients with conventional treatment, but P was low with organic ones. However, P content in soil was high, because this element is easily precipitated in carbonated soil. Pepper yield was higher in conventional treatment and no differences in productivity were found between the two organic treatments. The role of EM was not clear on the development of plants and fruits; however it seems to influence the N mineralization in organic treatments. ARTICLE HISTORY

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“…Other studies in dryland wheat systems have shown little or no response of dryland winter wheat to compost, at least in the short-term (Calderón et al, 2018;Lyon et al, 2012;Pardo et al, 2009;Pardo et al, 2011). While all were conducted in arid and semi-arid dryland wheat systems, these studies represent a range of soil fertility, management history, precipitation levels, and soil type, indicating the importance in teasing out potentially complex interactions between yield response and environmental variables.…”

Section: Discussionmentioning

confidence: 99%

Nutritive and non‐nutritive effects of compost on organic dryland wheat in Utah

et al. 2021

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Organic dryland wheat (Triticum aestivum L.) is an important crop in Utah and the intermountain western United States; however, growers face numerous challenges maintaining yield, grain quality, soil fertility, and health. Wheat yields in the West are severely constrained by lack of rainfall, so dryland organic wheat farmers generally do not grow cover crops due to the risk of subsequent crop failure or apply soil amendments due to the inability to recoup application costs in the short term. Compost may have significant non‐nutritive as well as nutritive effects on soil processes, however, potentially changing calculations of perceived costs vs. benefits. The goal of this study was to quantify the effects of a one‐time compost application on soil health, yield, and crop quality in an organic dryland wheat–fallow system in northern Utah. Four rates of compost, applied once, (0, 12.5, 25, and 50 Mg ha−1 dry weight, DW) were compared to anhydrous ammonia (50 kg N ha−1) applied at planting. Mineralizable C, microbial biomass, and phosphatase enzyme activity increased significantly at all compost rates, while available soil P increased at the 25 and 50 Mg ha−1 rates and total soil N at the 50 Mg ha rate−1. Soil moisture was generally no different between treatments. Wheat yield was significantly greater 3 yr after application at the 50 Mg ha−1 compost rate only, with no response to conventional fertilizer. A lack of yield response to conventional fertilizer suggests that non‐nutritive benefits of improved soil health were responsible for improved yields at the high compost rate.

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Organic Versus Conventional Methods of Fertilization and Weed Control in a Long Term Rotation of Cereals in Semiarid Spain

Cited by 8 publications

References 16 publications

Management Effects on Soil Organic Carbon Stock in Mediterranean Open Rangelands—Treeless Grasslands

Management Effects on Soil Organic Carbon Stock in Mediterranean Open Rangelands—Treeless Grasslands

Effect of Organic and Synthetic Fertilizers on the Crop Yield and Macronutrients Contents in Soil and Pepper

Nutritive and non‐nutritive effects of compost on organic dryland wheat in Utah

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