| Nitrogen availability from high-nitrogen-containing organic fertilizers TK Hartz, PR Johnstone HortTechnology 16 (1), 39-42, 2006 | 167 | 2006 |
| Managing fruit soluble solids with late-season deficit irrigation in drip-irrigated processing tomato production PR Johnstone, TK Hartz, M LeStrange, JJ Nunez, EM Miyao HortScience 40 (6), 1857-1861, 2005 | 149 | 2005 |
| Processing tomato yield and fruit quality improved with potassium fertigation TK Hartz, PR Johnstone, DM Francis, EM Miyao HortScience 40 (6), 1862-1867, 2005 | 149 | 2005 |
| Adapting crop rotations to climate change in regional impact modelling assessments EI Teixeira, J de Ruiter, AG Ausseil, A Daigneault, P Johnstone, A Holmes, ... Science of the Total Environment 616, 785-795, 2018 | 101 | 2018 |
| Climate adaptation pathways for agriculture: Insights from a participatory process NA Cradock-Henry, P Blackett, M Hall, P Johnstone, E Teixeira, A Wreford Environmental Science & Policy 107, 66-79, 2020 | 97 | 2020 |
| Establishing lettuce leaf nutrient optimum ranges through DRIS analysis TK Hartz, PR Johnstone, E Williams, RF Smith HortScience 42 (1), 143-146, 2007 | 92 | 2007 |
| Mustard cover crops are ineffective in suppressing soilborne disease or improving processing tomato yield TK Hartz, PR Johnstone, EM Miyao, RM Davis HortScience 40 (7), 2016-2019, 2005 | 90 | 2005 |
| Sources of variability in the effectiveness of winter cover crops for mitigating N leaching EI Teixeira, P Johnstone, E Chakwizira, J de Ruiter, B Malcolm, N Shaw, ... Agriculture, Ecosystems & Environment 220, 226-235, 2016 | 86 | 2016 |
| Radiation capture and radiation use efficiency in response to N supply for crop species with contrasting canopies AL Fletcher, PR Johnstone, E Chakwizira, HE Brown Field Crops Research 150, 126-134, 2013 | 69 | 2013 |
| Unparalleled coupled ocean-atmosphere summer heatwaves in the New Zealand region: drivers, mechanisms and impacts MJ Salinger, E Diamond, HJl Behrens, D Fernandez, BB Fitzharris, ... Climatic Change, 2020 | 65 | 2020 |
| Resilience achieved via multiple compensating subsystems: The immediate impacts of COVID-19 control measures on the agri-food systems of Australia and New Zealand V Snow, D Rodriguez, R Dynes, W Kaye-Blake, T Mallawaarachchi, ... Agricultural Systems 187, 103025, 2021 | 61 | 2021 |
| Lettuce response to phosphorus fertilization in high phosphorus soils PR Johnstone, TK Hartz, MD Cahn, MR Johnstone HortScience 40 (5), 1499-1503, 2005 | 47 | 2005 |
| Catch crops after winter grazing for production and environmental benefits. B Malcolm, E Teixeira, P Johnstone, S Maley, J Ruiter, E Chakwizira | 33 | 2016 |
| Soil calcium status unrelated to tipburn of romaine lettuce TK Hartz, PR Johnstone, RF Smith, MD Cahn HortScience 42 (7), 1681-1684, 2007 | 29 | 2007 |
| Effects of nitrogen rate on nitrate–nitrogen accumulation in forage kale and rape crops E Chakwizira, P Johnstone, AL Fletcher, ED Meenken, JM de Ruiter, ... Grass and Forage Science 70 (2), 268-282, 2015 | 28 | 2015 |
| Impacts of climate change on land-based sectors and adaptation options RAC Nottage, L Wilcocks, JM Lee, C Burke, E Kalaugher, J Roche, ... Ministry for Primary Industries: Wellington, New Zealand, 2012 | 28 | 2012 |
| Making sense of yield trade-offs in a crop sequence: a New Zealand case study AL Fletcher, HE Brown, PR Johnstone, JM de Ruiter, RF Zyskowski Field Crops Research 124 (2), 149-156, 2011 | 27 | 2011 |
| Relationship between soil phosphorus availability and phosphorus loss potential in runoff and drainage TK Hartz, PR Johnstone Communications in soil science and plant analysis 37 (11-12), 1525-1536, 2006 | 26 | 2006 |
| Organic matter amendments can reduce nitrate leaching losses from winter-applied urine under simulated fodder beet grazing Malcolm BJ, Cameron KC, Curtin D, Di HJ, Beare BH, Johnstone P, Edwards GR Agriculture, Ecosystems & Environment 272, 10-18, 2019 | 25* | 2019 |
| Small-scale spatial variability of plant nutrients and soil organic matter: an arable cropping case study W Qiu, D Curtin, P Johnstone, M Beare, G Hernandez-Ramirez Communications in soil science and plant analysis 47 (19), 2189-2199, 2016 | 25 | 2016 |
