Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 36 checked references that resolve
resolves10.1007/s10457-014-9721-6Vertical root separation and light interception in a temperate tree-based intercropping system of Eastern Canada
resolves10.1007/s11738-012-1051-6Biomass accumulation and partitioning, photosynthesis, and photosynthetic induction in field-grown maize (Zea mays L.) under low- and high-nitrogen conditions
resolves10.1016/S2095-3119(16)61371-0Response of yield, quality, water and nitrogen use efficiency of tomato to different levels of water and nitrogen under drip irrigation in Northwestern China
resolves10.1016/j.agwat.2016.05.011Water use efficiency is improved by alternate partial root-zone irrigation of apple in arid northwest China
resolves10.1016/j.fcr.2007.10.004Yield response of corn to irrigation and nitrogen fertilization in a Mediterranean environment
resolves10.1023/A:1020598110484Competition for light between hedgerows and maize in an alley cropping system in Hawaii, USA
resolves10.1016/j.fcr.2014.07.003Growth, yield, and nitrogen use in the wheat/maize intercropping system in an arid region of northwestern China
resolves10.15835/nbha3723255Study of the Effect of Drought Stress on Yield, Yield Components and Harvest Index of Sunflower Hybrid Iroflor at Different Levels of Nitrogen and Plant Population
resolves10.1016/j.fcr.2012.12.001Coupling effects of urea types and subsoiling on nitrogen–water use and yield of different varieties of maize in northern China
resolves10.1007/s002710000019Soil water distribution, uniformity and water-use efficiency under alternate furrow irrigation in arid areas
resolves10.1016/j.agwat.2015.05.004Yield and quality of sugar beet (Beta vulgaris L.) at different water and nitrogen levels under the climatic conditions of Kırsehir, Turkey
resolves10.1016/j.agwat.2008.06.014Water and nitrogen interaction on soil profile water extraction and ET in maize–wheat cropping system
resolves10.1016/S0065-2113(09)01007-4Chapter 7 Nutrient and Water Management Effects on Crop Production, and Nutrient and Water Use Efficiency in Dryland Areas of China
resolves10.1016/j.proeng.2012.01.679Water use Efficiency and Physiological Responses of Oat under Alternate Partial Root-zone Irrigation in the Semiarid Areas of Northeast China
resolves10.1016/j.agee.2017.06.031Soil water effects of agroforestry in rainfed jujube (Ziziphus jujube Mill.) orchards on loess hillslopes in Northwest China
resolves10.1016/j.still.2015.11.003Coupling effects of plastic film mulching and urea types on water use efficiency and grain yield of maize in the Loess Plateau, China
resolves10.1016/j.fcr.2017.08.006Effects of tillage, mulching and N management on yield, water productivity, N uptake and residual soil nitrate in a long-term wheat-summer maize cropping system
resolves10.1016/j.fcr.2014.02.001Effects of supplemental irrigation with micro-sprinkling hoses on water distribution in soil and grain yield of winter wheat
resolves10.1007/s10457-009-9227-9Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau
resolves10.1080/03650340.2015.1105360Economic water use efficiency of corn (<i>Zea mays</i>L.) hybrids as affected by irrigation regimes: a case study in West Iran
resolves10.1016/j.ecoleng.2006.09.024Effects of tree competition on corn and soybean photosynthesis, growth, and yield in a temperate tree-based agroforestry intercropping system in southern Ontario, Canada
resolves10.3390/agronomy8120280Variation of Fine Roots Distribution in Apple (Malus pumila M.)–Crop Intercropping Systems on the Loess Plateau of China
resolves10.1016/j.fcr.2017.12.021Long-term evaluation of tillage methods in fallow season for soil water storage, wheat yield and water use efficiency in semiarid southeast of the Loess Plateau
resolves10.1007/s11738-017-2451-4The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata
resolves10.1016/j.scitotenv.2015.11.091Reducing environmental risk of excessively fertilized soils and improving cucumber growth by Caragana microphylla-straw compost application in long-term continuous cropping systems
resolves10.1016/j.agwat.2016.12.004Effects of different irrigation water and nitrogen levels on the water use, rose flower yield and oil yield of Rosa damascena
resolves10.1007/s11099-016-0213-yEffects of fertilization on leaf photosynthetic characteristics and grain yield in tartary buckwheat Yunqiao1
resolves10.1016/j.fcr.2018.02.002Coupling effects of water and fertilizer on yield, water and fertilizer use efficiency of drip-fertigated cotton in northern Xinjiang, China
resolves10.1016/j.agwat.2018.02.033Morphological and physiological traits of rice roots and their relationships to yield and nitrogen utilization as influenced by irrigation regime and nitrogen rate
resolves10.1080/15324982.2012.694394Soil Moisture and Soil Nutrient Content in Walnut-Crop Intercropping Systems in the Loess Plateau of China
The 6 references without a DOI — listed, not checked
no DOI — not checkedIntercropping competition between apple trees and crops in agroforestry systems on the Loess Plateau of China
no DOI — not checked10.1016/j.agwat.2019.04.019_bib0130
no DOI — not checkedEffects of irrigation and urea types on N utilization, yield and quality of maize
no DOI — not checkedCoupling effect of water and fertilizer on corn yield under drip fertigation
no DOI — not checkedRoot distribution variation of crops under walnut-based intercropping systems in the Loess Plateau of China
no DOI — not checkedEffect of water and nitrogen spatial coupling under alternate furrow irrigation and fertilizer placement on summer maize
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