Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425567
D. Wardle
Abstract The research (performed both locally and abroad) on the allelopathic potential of most common New Zealand pasture plants (including important weeds) is reviewed. The bioassay techniques usually used for demonstrating allelopathic influences have several drawbacks, often making the observed inhibitory effect of the donor plant a possible artefact of the method used. Other criteria required for the demonstration of allelopathy in the field have been sparingly satisfied, including the chemical identification of toxins, demonstration of concentration of toxins in the field, and the elimination of other possible factors explaining interference in the field. It is concluded that, to unequivocally prove allelopathy, one must first demonstrate that toxins from one plant are taken up by neighbouring plants and produce an inhibitory response. Studies of interference phenomena (including allelopathy) between plants in pastures might be potentially useful for weed control, or for determining mutual compatibi...
{"title":"Allelopathy in the New Zealand grassland/pasture ecosystem","authors":"D. Wardle","doi":"10.1080/03015521.1987.10425567","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425567","url":null,"abstract":"Abstract The research (performed both locally and abroad) on the allelopathic potential of most common New Zealand pasture plants (including important weeds) is reviewed. The bioassay techniques usually used for demonstrating allelopathic influences have several drawbacks, often making the observed inhibitory effect of the donor plant a possible artefact of the method used. Other criteria required for the demonstration of allelopathy in the field have been sparingly satisfied, including the chemical identification of toxins, demonstration of concentration of toxins in the field, and the elimination of other possible factors explaining interference in the field. It is concluded that, to unequivocally prove allelopathy, one must first demonstrate that toxins from one plant are taken up by neighbouring plants and produce an inhibitory response. Studies of interference phenomena (including allelopathy) between plants in pastures might be potentially useful for weed control, or for determining mutual compatibi...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"15 1","pages":"243-255"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85258234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425556
S. Rājan
Abstract A field trial was conducted for two years to determine the effectiveness of partially acidulated phosphate rock (PAPR) — in this instance, a reactive North Carolina rock acidulated with 20, 30, and 50% of the phosphoric acid needed for complete acidulation. The soil was a yellow-brown loam (Typic Vitrandept), and triple superphosphate (TSP) was used as the standard fertiliser. The fertilisers were applied at four rates to a ryegrass-white clover permanent pasture. The soil was highly P retentive and the dominant clay was allophane. The trial design enabled measurement of the residual effectiveness of the fertilisers in the second year. The ability of soil tests (namely, Olsen, Bray-I 1 min, Bray-I 30 min, and anion exchange resin) to indicate soil P availability to plants was assessed. The rate of dissolution of unacidulated rock phosphate in PAPR was calculated from inorganic P fractionation in soil samples collected at intervals. Dry matter yields and P uptake indicated that, as a maintenance f...
{"title":"Partially acidulated phosphate rock as fertiliser and dissolution in soil of the residual rock phosphate","authors":"S. Rājan","doi":"10.1080/03015521.1987.10425556","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425556","url":null,"abstract":"Abstract A field trial was conducted for two years to determine the effectiveness of partially acidulated phosphate rock (PAPR) — in this instance, a reactive North Carolina rock acidulated with 20, 30, and 50% of the phosphoric acid needed for complete acidulation. The soil was a yellow-brown loam (Typic Vitrandept), and triple superphosphate (TSP) was used as the standard fertiliser. The fertilisers were applied at four rates to a ryegrass-white clover permanent pasture. The soil was highly P retentive and the dominant clay was allophane. The trial design enabled measurement of the residual effectiveness of the fertilisers in the second year. The ability of soil tests (namely, Olsen, Bray-I 1 min, Bray-I 30 min, and anion exchange resin) to indicate soil P availability to plants was assessed. The rate of dissolution of unacidulated rock phosphate in PAPR was calculated from inorganic P fractionation in soil samples collected at intervals. Dry matter yields and P uptake indicated that, as a maintenance f...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"45 1","pages":"177-184"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74932487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425559
J. Burgmans, R. Lill
Abstract Seven cultivars of supersweet corn (Zea mays L.) were tested in Hawke's Bay, New Zealand. The cultivar ‘Temptation’, a shrunken-2 mutant had a kernel yield of 14.6 and 15.1 t/ha in the two seasons of observation and appeared to be the most suitable for both fresh market and processing. ‘Sugar Loaf’, a synergistic type, performed better than the shrunken-2 mutants in drying tests, but was not preferred in taste panel assessment. Some early maturing cultivars had a low plant height and may be unsuitable for processing because of a lack of suitable machine harvesters at present. Based on cob appearance, shelf-life of fresh cobs of ‘Temptation’ was eight days, but soluble solids content declined rapidly during this period.
{"title":"Sweet corn : observations on supersweet cultivars for processing and fresh-market use in New Zealand","authors":"J. Burgmans, R. Lill","doi":"10.1080/03015521.1987.10425559","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425559","url":null,"abstract":"Abstract Seven cultivars of supersweet corn (Zea mays L.) were tested in Hawke's Bay, New Zealand. The cultivar ‘Temptation’, a shrunken-2 mutant had a kernel yield of 14.6 and 15.1 t/ha in the two seasons of observation and appeared to be the most suitable for both fresh market and processing. ‘Sugar Loaf’, a synergistic type, performed better than the shrunken-2 mutants in drying tests, but was not preferred in taste panel assessment. Some early maturing cultivars had a low plant height and may be unsuitable for processing because of a lack of suitable machine harvesters at present. Based on cob appearance, shelf-life of fresh cobs of ‘Temptation’ was eight days, but soluble solids content declined rapidly during this period.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"11 1","pages":"199-203"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83496908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425557
D. J. Beever, C. Yearsley
Abstract New Zealand kiwifruit (Actinidia deliciosa (A. Chev.) C. F. Liang et A. R. Ferguson var. deliciosa) were treated with methyl bromide or hydrogen cyanide fumigants at dose rates similar to those used to treat insect-infested fruit on arrival in Japan. Methyl bromide treatment (48 g/m3 for 3 h at 12°C) stimulated fruit respiration and increased the rate of fruit softening at 20°C. In contrast, fruit softening in storage at 0°C was delayed by methyl bromide treatment. Hydrogen cyanide fumigation (1.8 g/m3 for 30 min at 12°C) had no effect on fruit quality as indicated by the parameters measured.
摘要新西兰猕猴桃(Actinidia deliciosa (A. Chev.))C. F. Liang和A. R. Ferguson var. deliciosa)用甲基溴或氰化氢熏蒸剂处理，其剂量率与抵达日本时用于处理虫蛀水果的剂量率相似。甲基溴处理(48 g/m3，在12°C下处理3 h)刺激果实呼吸，提高果实在20°C下的软化速度。相反，甲基溴处理延缓了0°C贮藏过程中果实的软化。结果表明，12℃下1.8 g/m3、30 min的氰化氢熏蒸对果实品质无影响。
{"title":"Kiwifruit: Effect of post-harvest fumigation on fruit quality","authors":"D. J. Beever, C. Yearsley","doi":"10.1080/03015521.1987.10425557","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425557","url":null,"abstract":"Abstract New Zealand kiwifruit (Actinidia deliciosa (A. Chev.) C. F. Liang et A. R. Ferguson var. deliciosa) were treated with methyl bromide or hydrogen cyanide fumigants at dose rates similar to those used to treat insect-infested fruit on arrival in Japan. Methyl bromide treatment (48 g/m3 for 3 h at 12°C) stimulated fruit respiration and increased the rate of fruit softening at 20°C. In contrast, fruit softening in storage at 0°C was delayed by methyl bromide treatment. Hydrogen cyanide fumigation (1.8 g/m3 for 30 min at 12°C) had no effect on fruit quality as indicated by the parameters measured.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"28 1","pages":"185-189"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73227117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425549
C. M. Bennett, T. Webb
Abstract Close linear correlations were obtained between yield of spring-sown crops and evapotranspiration calculated for each of four soil types and irrigation treatments in Canterbury. Available soil water storage, derived from soil depth (which was the only soil factor used to represent soil types), was shown to be the major soil factor determining crop yield. Under dryland conditions, barley and pea yields were greatly affected by each soil's available water storage capacity. In the two driest seasons, crops grown on the deep soils yielded 2–3 times higher than those on the shallow soils. Under irrigation, soil type differences were less important and, where adequate water was supplied, crops grown on shallow soils produced yields equivalent to those from deep soils. Relative crop responses to irrigation of the different soils were dependent upon the nature of the season and the timing of irrigation. In drier seasons, whenever irrigation treatments failed to eliminate severe water deficit stress in cr...
{"title":"Influence of soil type and irrigation on yield of spring-sown barley and peas and autumn-sown greenfeed in Canterbury","authors":"C. M. Bennett, T. Webb","doi":"10.1080/03015521.1987.10425549","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425549","url":null,"abstract":"Abstract Close linear correlations were obtained between yield of spring-sown crops and evapotranspiration calculated for each of four soil types and irrigation treatments in Canterbury. Available soil water storage, derived from soil depth (which was the only soil factor used to represent soil types), was shown to be the major soil factor determining crop yield. Under dryland conditions, barley and pea yields were greatly affected by each soil's available water storage capacity. In the two driest seasons, crops grown on the deep soils yielded 2–3 times higher than those on the shallow soils. Under irrigation, soil type differences were less important and, where adequate water was supplied, crops grown on shallow soils produced yields equivalent to those from deep soils. Relative crop responses to irrigation of the different soils were dependent upon the nature of the season and the timing of irrigation. In drier seasons, whenever irrigation treatments failed to eliminate severe water deficit stress in cr...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"104 1","pages":"123-133"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79814645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425555
V. Orchard, D. J. Ross, C. Ross, P. Rankin, J. Reynolds, A. Hewitt
Abstract A product described by the manufacturer as an “organic liquid soil conditioner” that “improves soil conditions and promotes healthy grass and plant growth” has been investigated. These and other claims warranted study because sports clubs and local bodies were querying its value as a tool in the management of sports turf. In co-operation with the Dunedin City Council we monitored 2 sites chosen for treatment. We tested the ability of the product to (a) increase the activity of soil micro-organisms, (b) improve soil structure, and (c) increase the water infiltration rate of the soils. Enzymes were present in the product, but in low concentrations compared with those of native enzymes in the soil. No gross effects were observed for any of the indices of soil biological activity or for any of the physical and chemical properties measured after treatment with the product. There are other solutions to sports turf problems, and we would commend them as preferable to the use of this product.
{"title":"Some biological, chemical, and physical properties of two sports ground soils after treatment with an enzyme soil conditioner","authors":"V. Orchard, D. J. Ross, C. Ross, P. Rankin, J. Reynolds, A. Hewitt","doi":"10.1080/03015521.1987.10425555","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425555","url":null,"abstract":"Abstract A product described by the manufacturer as an “organic liquid soil conditioner” that “improves soil conditions and promotes healthy grass and plant growth” has been investigated. These and other claims warranted study because sports clubs and local bodies were querying its value as a tool in the management of sports turf. In co-operation with the Dunedin City Council we monitored 2 sites chosen for treatment. We tested the ability of the product to (a) increase the activity of soil micro-organisms, (b) improve soil structure, and (c) increase the water infiltration rate of the soils. Enzymes were present in the product, but in low concentrations compared with those of native enzymes in the soil. No gross effects were observed for any of the indices of soil biological activity or for any of the physical and chemical properties measured after treatment with the product. There are other solutions to sports turf problems, and we would commend them as preferable to the use of this product.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"81 1","pages":"163-176"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73420600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425560
W. Bussell, P. Falloon, A. Nikoloff
Abstract In seven replicated cultivar assessment trials of asparagus (Asparagus officinalis L.) carried out at Levin, Lincoln, and Hastings, and harvested for 4–6 years, accumulated saleable yield from the first two seasons was highly correlated with accumulated saleable yield for the remainder of each trial. Yield ranking of cultivars after two years and at the end of each trial was nearly the same. Yield correlation coefficients and Spearman rank correlation coefficients were high in all trials, and significant when a large number of cultivars were tested. Two years of harvesting is considered to give a reliable evaluation of yield performance of new cultivars in New Zealand conditions.
{"title":"Evaluation of asparagus yield performance after two years' harvesting","authors":"W. Bussell, P. Falloon, A. Nikoloff","doi":"10.1080/03015521.1987.10425560","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425560","url":null,"abstract":"Abstract In seven replicated cultivar assessment trials of asparagus (Asparagus officinalis L.) carried out at Levin, Lincoln, and Hastings, and harvested for 4–6 years, accumulated saleable yield from the first two seasons was highly correlated with accumulated saleable yield for the remainder of each trial. Yield ranking of cultivars after two years and at the end of each trial was nearly the same. Yield correlation coefficients and Spearman rank correlation coefficients were high in all trials, and significant when a large number of cultivars were tested. Two years of harvesting is considered to give a reliable evaluation of yield performance of new cultivars in New Zealand conditions.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"53 1","pages":"205-208"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74894952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425564
R. Beresford, R. Mulholland
Abstract The disease cycle of mint rust (Puccinia menthae Pers.) was studied for 2 years in peppermint (Mentha × piperita L.) crops in Canterbury. Pycnia and aecia were present from August to late October, and the uredinial stage appeared in early October. Teliospores were produced in association with the uredinial stage in spring (September–December), but production of overwintering teliospores commenced in late February, as urediniospore production decreased. The uredinial stage persisted through one of the two winters, but its importance as a means of overwintering was not assessed. Autumn cultivation reduced the incidence of rust infection in the following spring. From observations on the timing of the disease cycle, the optimum time to flame for rust control in Canterbury would appear to be September, when the aecial stage is present, but before the uredinial stage appears. The latent period of the uredinial stage decreased with increasing mean air temperature, reaching a minimum of 12 days at c. 20°...
{"title":"Mint rust on cultivated peppermint in Canterbury: Disease cycle and control by flaming","authors":"R. Beresford, R. Mulholland","doi":"10.1080/03015521.1987.10425564","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425564","url":null,"abstract":"Abstract The disease cycle of mint rust (Puccinia menthae Pers.) was studied for 2 years in peppermint (Mentha × piperita L.) crops in Canterbury. Pycnia and aecia were present from August to late October, and the uredinial stage appeared in early October. Teliospores were produced in association with the uredinial stage in spring (September–December), but production of overwintering teliospores commenced in late February, as urediniospore production decreased. The uredinial stage persisted through one of the two winters, but its importance as a means of overwintering was not assessed. Autumn cultivation reduced the incidence of rust infection in the following spring. From observations on the timing of the disease cycle, the optimum time to flame for rust control in Canterbury would appear to be September, when the aecial stage is present, but before the uredinial stage appears. The latent period of the uredinial stage decreased with increasing mean air temperature, reaching a minimum of 12 days at c. 20°...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"41 1","pages":"229-233"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88114689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425562
J. Klein, T. G. Thorp
Abstract Feijoas (Feijoa sellowiana Berg.; ‘Apollo’, ‘Gemini’, and ‘Triumph’) have a commercial storage life of c. 4 weeks at 4°C, with 5 days subsequent shelf-life at 20°C. Fruit stored for 3–8 weeks developed chilling injury (CI) at 0°C but not at 4°C. CI increased in severity during 7–10 days shelf-life. External CI appeared as sunken spots at the stem end, while internal CI manifested itself as browning of the vascular elements. Pre-storage dips in water at 50°C or in CaCl2 did not prevent either skin or pulp browning or rots. Soluble solids concentrations and titratable acidity declined 10–20% and 30–60%, respectively, during 10 days shelf-life at 20°C after storage, regardless of pre-storage treatment and length of storage.
{"title":"Feijoas: Post-harvest handling and storage of fruit","authors":"J. Klein, T. G. Thorp","doi":"10.1080/03015521.1987.10425562","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425562","url":null,"abstract":"Abstract Feijoas (Feijoa sellowiana Berg.; ‘Apollo’, ‘Gemini’, and ‘Triumph’) have a commercial storage life of c. 4 weeks at 4°C, with 5 days subsequent shelf-life at 20°C. Fruit stored for 3–8 weeks developed chilling injury (CI) at 0°C but not at 4°C. CI increased in severity during 7–10 days shelf-life. External CI appeared as sunken spots at the stem end, while internal CI manifested itself as browning of the vascular elements. Pre-storage dips in water at 50°C or in CaCl2 did not prevent either skin or pulp browning or rots. Soluble solids concentrations and titratable acidity declined 10–20% and 30–60%, respectively, during 10 days shelf-life at 20°C after storage, regardless of pre-storage treatment and length of storage.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"48 1","pages":"217-221"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90509416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-04-01DOI: 10.1080/03015521.1987.10425558
R. Blank, H. Dance, R. Hampton, M. H. Olson, P. Holland
Abstract A regular field spray programme of captafol reduced the incidence of fungal rots and enhanced storage longevity of tamarillo (Cyphomandra betacea (Cav.) Sendt.) fruit. Captafol and benomyl field sprays in combination with a prochloraz + imazalil post-harvest dip treatment enhanced fruit appearance after storage by preventing breakdown of the calyx. The prochloraz + imazalil post-harvest dip was the most effective single treatment, giving complete control of tamarillo rots after 6 weeks cool storage followed by 1 week at ambient temperatures. Bitter rot (Glomerella cingulata (Stonem.)) was responsible for most rejection of fruit. Diaporthe phaseolorum (Cke. & Ell.) and Phoma exigua Desm. became increasingly important in causing the rejection of dipped fruit as the storage interval was increased.
{"title":"Tamarillo (Cyphomandra betacea): Effect of field-applied fungicides and post-harvest fungicide dips on storage rots of fruit","authors":"R. Blank, H. Dance, R. Hampton, M. H. Olson, P. Holland","doi":"10.1080/03015521.1987.10425558","DOIUrl":"https://doi.org/10.1080/03015521.1987.10425558","url":null,"abstract":"Abstract A regular field spray programme of captafol reduced the incidence of fungal rots and enhanced storage longevity of tamarillo (Cyphomandra betacea (Cav.) Sendt.) fruit. Captafol and benomyl field sprays in combination with a prochloraz + imazalil post-harvest dip treatment enhanced fruit appearance after storage by preventing breakdown of the calyx. The prochloraz + imazalil post-harvest dip was the most effective single treatment, giving complete control of tamarillo rots after 6 weeks cool storage followed by 1 week at ambient temperatures. Bitter rot (Glomerella cingulata (Stonem.)) was responsible for most rejection of fruit. Diaporthe phaseolorum (Cke. & Ell.) and Phoma exigua Desm. became increasingly important in causing the rejection of dipped fruit as the storage interval was increased.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"415 6","pages":"191-198"},"PeriodicalIF":0.0,"publicationDate":"1987-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91521006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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