| Mehlich 3 soil test extractant: A modification of Mehlich 2 extractant | 1984/12/01 | English | 3,675 |
| Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid | 1975/01/01 | English | 2,153 |
| A rapid and precise method for routine determination of organic carbon in soil | 1988/10/01 | English | 1,359 |
| A wet oxidation procedure suitable for the determination of nitrogen and mineral nutrients in biological material | 1975/01/01 | English | 918 |
| A comprehensive system of leaf analyses and its use for diagnosing crop nutrient status | 1982/01/01 | English | 692 |
| Soil analysis procedures using 0.01 M calcium chloride as extraction reagent | 2000/05/01 | English | 639 |
| Nitric acid digestion and multi‐element analysis of plant material by inductively coupled plasma spectrometry | 1987/01/01 | English | 562 |
| A new soil test for simultaneous extraction of macro‐ and micro‐nutrients in alkaline soils | 1977/01/01 | English | 484 |
| Determination of total organic‐C in soils by an improved chromic acid digestion and spectrophotometric procedure | 1984/09/01 | English | 435 |
| Microscale determination of inorganic nitrogen in water and soil extracts | 1995/01/01 | English | 400 |
| A novel digestion technique for multi‐element plant analysis | 1983/06/01 | English | 387 |
| Potential use of dehydrogenase activity as an index of microbial activity in degraded soils | 1997/01/01 | English | 369 |
| A micro‐pipette method for soil mechanical analysis | 1987/01/01 | English | 366 |
| A manual colorimetric procedure for measuring ammonium nitrogen in soil and plant Kjeldahl digests | 1989/05/01 | English | 325 |
| Plant adaptation to acid, aluminum‐toxic soils | 1988/05/01 | English | 323 |
| Digestion of plant tissue for analysis by ICP emission spectroscopy | 1985/09/01 | English | 303 |
| Role of Cover Crops in Improving Soil and Row Crop Productivity | 2005/10/01 | English | 292 |
| Soil testing for heavy metals | 2000/06/01 | English | 292 |
| A rapid nitric‐perchloric acid digestion method for multi‐element tissue analysis | 1977/01/01 | English | 277 |
| Comparison of corn leaf nitrogen concentration and chlorophyll meter readings | 1992/11/01 | English | 267 |
| A simple high sample volume ashing procedure for determination of soil organic matter | 1984/06/01 | English | 259 |
| Use of ammonium bicarbonate DTPA soil test to evaluate elemental availability and toxicity | 1985/03/01 | English | 258 |
| Comparison of three wet digestion methods for the determination of plant sulphur by inductively coupled plasma atomic emission spectroscopy (ICP‐AES) | 1994/02/01 | English | 254 |
| Effects of Nutrient Antagonism and Synergism on Yield and Fertilizer Use Efficiency | 2017/09/08 | English | 251 |
| Rare Earth Elements in Soils | 2006/06/01 | English | 249 |
| Extraction of phosphorus, potassium, calcium, and magnesium from soils by an ion‐exchange resin procedure | 1986/05/01 | English | 246 |
| New extractant for soil test evaluation of phosphorus, potassium, magnesium, calcium, sodium, manganese and zinc | 1978/01/01 | English | 242 |
| Determination of organic matter content in arid‐zone soils using a simple “loss‐on‐ignition” method | 1989/09/01 | English | 235 |
| Ammonium determination in soil extracts by the salicylate method | 1986/07/01 | English | 233 |
| The determination of boron in soil extracts, plant materials, composts, manures, water and nutrient solutions | 1971/01/01 | English | 224 |