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Soil organic matter plays a key role to achieve sustainability in agricultural production, because it possesses many desirable properties such as high WHC, CEC, ability to sequester contaminants, and beneficial effects on the physical, chemical, and

analysis of 2013 end-of-season samples was determined by Midwest Laboratories (Omaha, NE) according to common soil analysis methods for this region ( Brown, 1998 ). Organic matter was determined using loss of weight on ignition; available P was extracted as

to prevent this from happening. Although shade tree leaves are rich in C compounds, which build soil organic matter content, the material is relatively low in concentrations of essential plant nutrients ( Table 1 ). On average, community shade tree

sandy-skeletal, mixed, superactive, mesic Aridic Haploxerol), averaging 1% to 2% organic matter with a pH of 7.0. Annual rainfall at the orchard site averages 21.6 cm. The study site was previously planted to sweet cherry; after stump removal and disking

the three true leaf stage were transplanted to 8-L plastic pots containing soil I and soil II ( Table 1 ). Soil I was a fertile, routinely vegetable-cultivated soil and soil II had a high CaCO 3 content, low organic matter content, and high salinity

pure perlite, a low organic-matter substrate, irrigated with quarter-strength nitrogen-free Hoagland’s solution at pH 7.5 during Expt. 2. Four plants were randomly chosen and harvested weekly. Nodules were found at week 5 after experiment initiation

availability, interactions, and predictions of potential problems. Soil analysis also reveals information relative to soil health. Soil organic matter levels in pecan orchards have received little attention. Organic matter can enhance soil productivity in many

Canada since 2009. The soil is categorized as a Harriston loam (USDA textural classification) with 4.6% of organic matter (Walkley-Black method), 18.4 meq/100 g of cation exchange capacity, and 7.4 of pH (based on saturated soil paste from a 1:2 ratio of

retention and infiltration, and soil organic matter and microbial populations ( Franzluebbers, 2002 ; Hungria et al., 2009 ; TerArvest et al., 2015 ; Want et al., 2014 ). Tarping has emerged as a practice used by small-scale organic farmers in the

increasing volumetric proportions (10%, 20%, and 40%) of organic matter plus an industry standard control (Rooflite™) following the ( A ) first, ( B ) second, and ( C ) third 100-mL irrigation events imitating a 1.27 cm 1-h rain event. Means (n = 6) are shown