New Zealand Journal of Crop and Horticultural Science (NEW ZEAL J CROP HORT)

Publisher: Royal Society of New Zealand

Journal description

New Zealand Journal of Crop and Horticultural Science is an international research journal published for researchers in research institutes, universities, and other organisations worldwide concerned with all aspects of crop and horticultural science. New Zealand Journal of Crop and Horticultural Science publishes original research papers, review articles, and commentaries on all aspects of the production, protection, handling, and processing of crop and horticultural products. The scope of the journal encompasses agricultural economics, agronomy, biotechnology, entomology, plant nutrition, plant breeding, plant pathology, pomology, postharvest physiology, soil science, and viticulture. Papers on any horticultural crops are appropriate but the journal particularly encourages contributions on kiwifruit, apples, wine grapes and oenology, as well as papers on biosecurity, new crop and horticultural products and descriptions of new cultivar releases. Short communications, Book reviews, and Letters to the Editor are also published.

Current impact factor: 0.27

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.271
2012 Impact Factor 0.481
2011 Impact Factor 0.544
2010 Impact Factor 0.247
2009 Impact Factor 0.481
2008 Impact Factor 0.303
2007 Impact Factor 0.248
2006 Impact Factor 0.173
2005 Impact Factor 0.341
2004 Impact Factor 0.338
2003 Impact Factor 0.292
2002 Impact Factor 0.394
2001 Impact Factor 0.431
2000 Impact Factor 0.225
1999 Impact Factor 0.273
1998 Impact Factor 0.122
1997 Impact Factor 0.297
1996 Impact Factor 0.292
1995 Impact Factor 0.313
1994 Impact Factor 0.273
1993 Impact Factor 0.152
1992 Impact Factor 0.231

Impact factor over time

Impact factor

Additional details

5-year impact 0.57
Cited half-life 0.00
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.18
Website New Zealand Journal of Crop and Horticultural Science website
Other titles New Zealand journal of crop and horticultural science
ISSN 0114-0671
OCLC 20346537
Material type Government publication, National government publication, Periodical
Document type Journal / Magazine / Newspaper

Publisher details

Royal Society of New Zealand

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 2 years embargo
  • Conditions
    • On author or institutional server only
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
  • Classification
    ​ yellow

Publications in this journal

  • Wu, Li, Wang, Shi, Zhao, Ren, Guo
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    ABSTRACT: Allene oxide synthase (AOS), which is a cytochrome P450 (CYP74A), catalyses the first step in the biosynthesis of jasmonic acid from lipoxygenase-derived hydroperoxides of free fatty acids. The full-length cDNA of an AOS-like gene was cloned from Brassica oleracea using rapid amplification of cDNA ends and was designated as BoAOS. The BoAOS expression level was higher in alabastrums and flowers than in other tissues of cabbage, as determined by real-time reverse transcription polymerase chain reaction (RT-PCR). To characterize the BoAOS gene, Arabidopsis was transformed via Agrobacterium tumefaciens with a vector to express the gene under the control of a strong constitutive promoter, CaMV35S (Cauliflower Mosaic Virus). Based on analyses of tolerance to drought stress, compared with control plants, the overexpression of BoAOS in transgenic plants increased the endogenous jasmonic acid level and conferred higher tolerance to drought stress. Therefore, we suggest that BoAOS may be a suitable candidate gene to produce transgenic plants with tolerance to drought stress.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.940982
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    ABSTRACT: In China, apple (Malus × domestica Borkh.) nursery stock is generally of low quality because of extremely high planting density. The objective of this study was to determine the optimum planting density of 2-year-old grafted apple trees. Tree growth (height, trunk diameter, leaf area index) increased as density decreased. Trees grown at high densities (14.3–50 plants/m2) were the shortest with the smallest trunk diameters and leaf areas, whereas trees grown at lower densities (4.8–10 plants/m2) were generally largest in terms of height, diameter and leaf area. Trees grown at lower densities tended to have higher bud dry weight, leaf dry weight, nitrogen content, total soluble sugar concentration and total non-structural carbohydrate content. Higher levels of these parameters were generally observed with tree densities at or below 10 plants/m2. Therefore we conclude that 10 plants/m2 is the optimum density for maximizing the number of trees produced per unit land area while maintaining tree quality of nursery stock.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.900093
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    ABSTRACT: In this study, the possibility of enhancing water stress tolerance of pepper during early growth stages by foliar application of glycinebetaine (GB) was investigated. Pepper seedlings with four true leaves were sprayed with three different concentrations (0, 5 or 25 mM) of GB after which they were subjected to water stress for 10 days. Water stress caused substantial reductions in shoot dry weight, leaf area, chlorophyll content, leaf water potential, gas exchange characteristics and efficiency of photosystem-II while increasing membrane permeability and lipid peroxidation. However, foliar application of GB significantly counteracted the water stress-induced adverse effects by increasing chlorophyll content, stomatal conductance, efficiency of photosystem-II and proline content, while reducing visual damage symptoms, membrane permeability and lipid peroxidation. GB application also improved leaf water potential, relative water content and antioxidant enzymatic activity. Among the GB concentrations applied, enhanced water stress tolerance was obtained with 5 mM GB pre-treatment. Results, therefore, indicate that GB, applied as foliar spray, could be used as an ameliorative agent for pepper seedlings against the deleterious effects of water stress.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.936945
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    ABSTRACT: The effect on annual konjac corm production of planting heavier corms and increasing plant density was investigated at Pukekohe Research Station, New Zealand. Corm yields were 2.2 times the planted corm weights giving a mean corm weight of 741 g harvested from large corms (325 g) and 334 g from small corms (150 g). The mean corm yield increased 1.5 t ha−1 for every 10 g increase in planted corm weight in the 150–330 g range. Increasing the plant density from 33,330 to 106,670 plants ha−1 had a strong linear effect on corm yield. The total yield of corms and offsets from large planted corms increased by 7.2 t ha−1 for each additional plant m−2 to lift yields from 34.9 t ha−1 to 88.1 t ha−1. For small planted corms, total yields rose from 13.7 t ha−1 to 43.9 t ha−1 giving an increase of 4.1 t ha−1 for each plant m−2 increase. Offset production was 12% of the total corm yield grown from large corms and 20% when grown from small corms with no effect from plant spacing.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.898313
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    ABSTRACT: Zygotic embryos of three herbaceous peony (Paeonia lactiflora Pall.) cultivars (‘Fen Yu Nu’, ‘Zhong Sheng Fen’ and ‘Zhu Sha Pan’) were used to study embryo germination and optimum plant growth regulator (PGR) combinations for in vitro propagation and root initiation. Mature zygotic embryos (>90 days after flowering [DAF]) gave better germination and survival than immature zygotic embryos (50–70 DAF). A protocol for initiating shoot growth and axillary shoot proliferation was established using mature embryos. The best results were obtained when using excised zygotic embryos (EZEs) obtained by removing the testa and endosperm from the seed. The best medium for EZE germination (an embryo with cotyledons) was half-strength Murashige and Skoog (MS) medium (with double-strength CaCl2) supplemented with 0.5 mg L−1 6-benzyladenine (BA) and 0.5 mg L−1 gibberellic acid (GA3). The best medium for axillary shoot proliferation was half-strength MS medium (including double-strength CaCl2) supplemented with 1 mg L−1 BA and 1 mg L−1 GA3. PGR-free half-strength MS was the best medium for promoting root development on seedlings (a germinated EZE with tender leaves) and for robust in vitro seedling establishment. The acclimatization of herbaceous peony remains the most challenging step of the in vitro protocol.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.944548
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    ABSTRACT: Control methods for tomato-potato psyllid (TPP; Bactericera cockerelli) are currently dominated by the use of synthetic biocides. A non-chemical alternative for TPP management is crop mesh, which forms a physical barrier between crop and pest. This study examined the ability of TPP adults to penetrate, or lay eggs through, 22 commercially available crop meshes using a laboratory bioassay. Adult TPP were prevented from moving through the mesh if the mesh complied with any one of the following criteria: shortest pore length 2. Eggs were found on foliage only when TPP adults had penetrated the mesh, suggesting that eggs could not be laid through the mesh. The results indicate that crop meshes may provide non-chemical control for TPP that can be used by organic growers, and producers attempting to reduce chemical inputs as part of integrated pest management.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.949800
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    ABSTRACT: Fruit rots are some of the most important diseases of grape and strawberry. With recent public concern regarding pesticide residues on fruit, there is a need for alternative disease management practices that will reduce the risk to consumers. The main aim of this study was to investigate the effectiveness of the commercial product BOTRY-Zen (active ingredient Ulocladium oudemansii [U3 strain]) to control strawberry and grape fruit rots. BOTRY-Zen at 6 g/L reduced significantly the percentage of rotted fruit in comparison with the untreated control. However, its effectiveness was significantly less than that of the fungicide Switch 25/37.5 WG (fludioxonil: cyprodinil) at a rate of 1 g/L (recommended by producer). There was no significant difference between the BOTRY-Zen at rate of 4 g/L and untreated plants. The results of this study showed that the commercial product BOTRY-Zen, at 6 g/L, could be a useful tool to control fruit rots of strawberry and grape in biological fruit production systems.
    New Zealand Journal of Crop and Horticultural Science 01/2015; 43(1). DOI:10.1080/01140671.2014.958502
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    ABSTRACT: A study over two growing seasons evaluated the efficacy and cost effectiveness of azoxystrobin (Amistar® SC), applied at different action thresholds and plant growth stages, on the incidence and severity of common rust of maize grown in the Pukekohe, New Zealand. Azoxystrobin applied as a preventative before disease symptoms appeared, or at the onset of disease symptoms, gave equal or better control than fungicide applications applied at 3% and 6% rust thresholds. However, using a 3% disease threshold up to the tasselling stage to time the application of azoxystrobin, controlled common rust in the more severe rust season (2008–09) and saved fungicide application costs associated with preventative (calendar) or disease-onset applications of azoxystrobin in the less severe rust season (2007–08) when the rust levels did not reach 3% by the tasselling stage. The maize hybrid 34D71 used was classified as moderately susceptible to common rust and, from the research presented here, it appears that although azoxystrobin applications reduced common rust severity, the lack of yield gains suggests that azoxystrobin applications in northern New Zealand may be economic only when growing highly susceptible maize varieties.
    New Zealand Journal of Crop and Horticultural Science 12/2014; 42(2). DOI:10.1080/01140671.2013.860040
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    ABSTRACT: Inheritance of the rapeseed (Brassica napus L.) white flower has not been extensively studied previously at the gene level, although it is a unique and useful marker trait. In this paper, rapeseed white flower inheritance was investigated by crossing/backcrossing a white flower inbred line with two different yellow flower inbred lines. We found that the white flower was monogenic and the white flower character was controlled by a pair of incomplete dominant genes. More importantly, by employing amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) technologies, we have identified three AFLP markers and two SSR markers that were closely linked to the white flower gene. The closest markers, EA06MG08 and EA11MG12, were mapped to be located at the either side of the white flower gene at a distance of 3.0 and 3.2 cM, respectively. In order to use the markers for white flower breeding, EA11MG12 was converted to a sequence-characterized amplified region (SCAR) marker. Furthermore, BLAST searches revealed that the sequences of the three AFLP markers showed good collinearity with their homologs on the Arabidopsis chromosome 5, indicating that the homolog of rapeseed white flower locus might exist between At5g49780 and At5g58230. Our results allow the formation of a gene map for the rapeseed white flower, providing further understanding about rapeseed white flower inheritance.
    New Zealand Journal of Crop and Horticultural Science 12/2014; 42(2):111-117. DOI:10.1080/01140671.2013.863211
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    ABSTRACT: Red light (10–12 lx) has been shown to induce the accumulation of steroidal glycoalkaloids (SGA) in potato (Solanum tuberosum) tubers. This study was to analyse the impact of genotypes, red light illumination and duration of incubation on SGA biosynthesis at the transcriptional level. The microtubers of wild species S. chacoense and cultivated potato varieties Shepody, Favorita, Longshu-3 and Zhuangshu-3 were tested. After 24 h incubation in the dark, the genes coding for hydroxymethylglutaryl coenzyme A reductase (hmg1, hmg2) and squalene synthase (pss1) remained relatively stable in S. chacoense and Longshu-3. The gene coding for vetispiradiene synthase (pvs1) was significantly induced in Favorita and Longshu-3. The expressions of sgt1 (solanidine galactosyl transferase) and sgt3 (rhamnosyltransferase) were induced in all tested varieties except S. chacoense. The transcript abundance of hmg1, hmg2, sgt1 and sgt3 was increased with red light illumination and incubation duration, but pvs1 was decreased. The results imply a feedback regulation system at the transcriptional level in SGA biosynthesis during red light illumination.
    New Zealand Journal of Crop and Horticultural Science 12/2014; 42(2). DOI:10.1080/01140671.2013.870219
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    ABSTRACT: Pseudomonas syringae pv. actinidiae (Psa) is an emerging disease of kiwifruit (Actinidia sp.). It has the potential to cause considerable production losses; therefore the ability to monitor and map the disease is important for industry-wide disease management. Using industry-collected infection data and an archived time-series of high-resolution satellite imagery, Psa disease monitoring in kiwifruit orchards was attempted for the 2010–11 growing season in the Bay of Plenty, New Zealand. Multiple vegetation indices were generated from imagery and a binomial logistic regression used to relate these vegetation indices to the Psa disease response. Results showed that the early season (2 October) photosynthetic vigour ratio was the most effective for differentiating infected and non-infected orchards. Omission and commission errors were observed, but were in part due to issues with data quality. The results were encouraging for the potential timely use of satellite imagery for monitoring and mapping Psa infections in kiwifruit.
    New Zealand Journal of Crop and Horticultural Science 12/2014; 42(4):303-311. DOI:10.1080/01140671.2014.894543
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    ABSTRACT: A field trial was conducted in 2012–2013 at Pukekohe to determine the efficacy of wettable sulphur, applied as a foliar treatment within a reduced insecticide programme, to control tomato-potato psyllid (TPP). Three of the four treatments included wettable sulphur (Kumulus® DF; at 6 kg/ha), either alone or in combination with other insecticides. The remaining treatment was a standard 7 day insecticide spray programme. Spraying for all treatments began at 60% plant emergence on 29 November 2012, and continued until 14 March 2013. The study demonstrated that although sulphur applications may reduce TPP nymph numbers on potato foliage, especially when used in combination with insecticides, sulphur alone is not an adequate TPP management strategy. The field trial results for sulphur-only treatments support previous work suggesting that although sulphur may slow the build-up of TPP populations by deterring egg-laying, the lack of repellence or anti-feeding properties still results in the transmission of Candidatus Liberibacter solanacearum by TPP. Given the ZC results, it is difficult to draw conclusions from this trial about the efficacy of sulphur/insecticide combinations for TPP management.
    New Zealand Journal of Crop and Horticultural Science 11/2014; 43(1). DOI:10.1080/01140671.2014.953550
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    ABSTRACT: Sour cherries (Prunus cerasus L.) are rich in anthocyanins and have a correspondingly high antioxidant activity and potential health benefits with respect to the prevention of many diseases, including cancers and diabetes. As one of the centres of origin of the subgenus Cerasus, Iran is rich in cherry germplasm resources. The aim of this research was to evaluate promising Iranian sour cherries for different fruit quality characteristics. Generally, significant differences (P ≤ 0.05) were observed across the sour cherry genotypes for characters such as fruit weight (FW) (1.89–5.51 g), firmness (0.17–0.37 Nmm−1), total sugars (14.57–21.54 °Brix), titratable acidity (0.91%–2.81% malic acid), total organic acids (381.04–1742.50 mg 100 g−1), total phenolic content (184.10–625.38 mg GAE 100 g−1), total anthocyanin content (17.49–123.80 mg cy-3-gly 100 g−1) and total antioxidant activity (10.09%–28.79% FW). In addition, a wide variation in fruit colour and sensory quality were observed within the studied genotypes. It was found that Iranian selections such as KaThLaSSGe21, Hamedan, KaTaJo2Ge9, KrRIV4C20, EsASC1V1SS1 and KaThLa3Ge23 generally scored higher for desirable fruit characteristics across this range of parameters than existing commercial genotypes used as the control comparisons. Thus, they can be considered as promising genotypes for further evaluation in cherry breeding programmes, as well as being potentially useful for the cherry juice/concentrate industry.
    New Zealand Journal of Crop and Horticultural Science 09/2014; 42(4):275-287. DOI:10.1080/01140671.2014.918044
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    ABSTRACT: Temperature has a key influence on plant growth. Rising temperatures associated with the enhanced greenhouse effect are likely to have important impacts on the plants that humans grow for food. This review examines some of the implications of elevated temperature on pome fruit in Australia, where the pome fruit industry is a valuable contributor to economic and social stability in rural regions. Many pome fruit growing regions are likely to become too hot in the future for viable production from existing tree varieties and there are few cooler regions available to establish new orchards. Nonetheless, it is anticipated that economically sustainable production in existing locations could be maintained at least in the short term by deploying adaptive strategies such as on-farm practices that help cool and protect fruit crops. Under predicted climate change scenarios the need for adaptation is clear if the Australian pome fruit industry is to survive.
    New Zealand Journal of Crop and Horticultural Science 08/2014; 42(1). DOI:10.1080/01140671.2013.838588
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    ABSTRACT: The efficacy of the plant growth regulator uniconazole (Sumagic®) for manipulating pyrethrum canopy architecture and enhancing yield was evaluated in each of 3 years across northern Tasmania, Australia. Trials examined the efficacy of, and factors influencing, reliability and magnitude of responses, including product rate, application timing, the benefits of adding a non-ionic organosilicone surfactant (Activator®) and combining application with urea. Results suggested that a rate of 100 g L−1 uniconazole (2 L ha−1 Sumagic®) was the most efficacious and that the addition of Activator® was unnecessary. However, at the highest rate, the cost of using the product became prohibitive and therefore trials in the latter 2 years of the study were conducted using the lower rate. Timing of application was not critical for efficacy and yield enhancements were observed when uniconazole was applied when stem length ranged from 16 to 36 cm, coinciding with a 30-day period in spring. Physiological effects of uniconazole were significant reductions in the height of stems (approximately 6 cm at flowering), increases in green leaf area and the number of flowers produced per unit area; the effects were independent of field age. This information has formed the basis for a cost-benefit analysis for the adoption of uniconazole into pyrethrum production in Australia.
    New Zealand Journal of Crop and Horticultural Science 08/2014; 42(1). DOI:10.1080/01140671.2013.846919
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    ABSTRACT: Blackcurrant (Ribes nigrum L.) beverages are a popular product, largely consumed for their distinctive flavour profile and the perceived health benefits associated with their vitamin C and anthocyanin content. Blackcurrant breeding programmes generate large numbers of offspring, which are generally screened by the breeders to select candidates that meet the specific industry requirements for flavour typicality. To investigate the effectiveness of this approach, four commercial genotypes with varying degrees of typicality and five Plant & Food Research genotypes selected based on breeder evaluations of typicality or novelty were profiled by a trained sensory panel, quantifying potential differences in aroma, flavour and mouthfeel attributes. The sensory profiles generally confirmed the breeder selections for typicality, supporting the use of the breeders' screening protocol. Implementing a pectin rinse protocol helped to decrease sensory fatigue and carryover effects during sensory profiling, therefore using this protocol may also be helpful during breeder assessments.
    New Zealand Journal of Crop and Horticultural Science 07/2014; 42(4):247-264. DOI:10.1080/01140671.2014.894920