Utilization of cassava peels as substrate for crude protein formation     

S. P. Antai  P. M. Mbongo 《Plant foods for human nutrition (Dordrecht, Netherlands)》1994,46(4):345-351

Mash prepared from cassava peels was inoculated with eitherSacchromyces cerevisiae orCandida tropicalis and then left to ferment for 7 days. Chemical analysis of the fermented mash showed substantial increase in crude protein content and decrease in carbohydrate content of the mash. The results also revealed slight increases in the ash, fibre and lipid content of the fermented mash. It was further observed that, when the mash was supplemented with inorganic nitrogen sources (urea, ammonium sulfate or sodium nitrate) before commencement of fermentation, the amount of crude protein formed was almost doubled. This enhanced crude protein production was highest in the mash supplemented with urea. Temperature of 30 °C, pH of 5.5 and moisture concentration of 130% were found to be optimum for crude protein formation by the organisms growing on the mash.  相似文献   

不同间作绿肥替代化肥模式对木薯性状和产量的影响     

唐红琴  李忠义  董文斌  韦彩会  何铁光  蒙炎成  汤海玲  莫永诚 《作物杂志》2021,37(4):184-168

通过探讨秸秆还田与化肥减施下间作绿肥对木薯产量性状的影响,着力解决连作木薯土壤肥力提高与改良相关技术的协调增效。于2019-2020年,以木薯品种“南美1号”为供试材料,设置8个处理,调查每个小区的木薯茎径、叶绿素（SPAD）、块根直径、块根长、单株茎秆鲜重、单株块根鲜重、株高、单片叶重、单株块根数以及小区产量等农艺性状。结果表明,处理5（木薯秆还田+化肥减量12.5%+12.5%营养元素当量黑豆绿肥还田）的木薯产量最高,并得到拟合方程。绿肥秸秆还田以及间作绿肥从整体上改良了土壤肥力,并通过显著影响木薯块根、单片叶重以及单株块根数而影响最终产量。  相似文献   

Dry heat treatment of Andean lupin seed to reduce anthracnose infection     

《Crop Protection》2016

The potential of dry heat treatment of Andean lupin seed to reduce seed–borne infection of the anthracnose pathogen, Colletotrichum acutatum, was investigated. First, the effect of dry heat (65 °C) over duration times of 0–96 h on germination and disease incidence after germination was evaluated for artificially– and naturally–infected seed. Dry heat treatment from 8 to 96 h reduced disease incidence after germination to undetectable levels in four cultivars compared with 7.5% disease incidence after germination in seed maintained at room temperature. Moreover, heat treatments of 4–12 h showed seed germination rates that were equivalent to the non–treated control. Under greenhouse conditions, dry heat treatments for 8 or 12 h reduced transmission of the pathogen from seed by 75 or 85%, respectively and dry heat treatment increased emergence of seedlings in comparison the non-treated control. Dry heat treatment is an environmentally friendly alternative for reducing anthracnose infections in Andean lupin seed.  相似文献   

芒果采后炭疽菌Colletotrichum asianum鉴定及生物学特性研究     

孙珊  谭丽玲  庞小婧  吴文嫱  黄东益  黄小龙 《热带作物学报》2016,37(12):2392-2397

采用组织块分离法从采后发病芒果果肉中分离病原菌,通过形态学观察、r DNA-ITS序列和系统发育树分析对其进行鉴定,并初步研究其生物学特性。结果表明:从发病芒果中分离到的病菌T0408鉴定为Colletotrichum asianum Prihastuti,L.CaiK.D.Hyde。该菌菌丝生长的适宜温度为20~30℃、适宜pH值为5~8;环境湿度在75%~98%范围内,湿度越大,菌丝生长速度越快,在3 000 lx日光灯的光照强度下连续光照有利于菌丝的生长和产孢;孢子萌发的适宜温度为25~30℃、适宜pH值为6~8,环境湿度为75%~98%,湿度越大、在3 000 lx日光灯的光照强度下连续光照有利于孢子的萌发。  相似文献   

6种杀菌剂对西瓜炭疽病的防效试验     

李汉丰  杜公福  党选民  戚志强 《蔬菜》2017,(8):41-44

采用6种杀菌剂对西瓜炭疽病进行田间药效试验。3次药后试验结果表明:50%咪鲜胺锰盐可湿性粉剂和25%吡唑醚菌酯乳油效果最好,防效在73%以上;10%苯醚甲环唑水分散粒剂和25%溴菌腈可湿性粉剂防效次之,防效在67%以上;50%多菌灵可湿性粉剂和80%代森锰锌可湿性粉剂防效较差,防效为50%左右。药剂处理后,50%咪鲜胺锰盐可湿性粉剂、25%吡唑醚菌酯乳油和对照,中心可溶性固形物含量分别为11.8%、12.0%、9.8%;两种药剂比对照分别增产30.96%、28.26%,增产效果显著。因此,推荐50%咪鲜胺锰盐可湿性粉剂和25%吡唑醚菌酯乳油为目前防治西瓜炭疽病的理想药剂。  相似文献   

木薯渣与甜菜颗粒粕组合效应对奶牛瘤胃发酵特性的影响     

郑宇慧  张新雨  李胜利 《中国畜牧杂志》2021,(2):130-136

本试验旨在通过体外产气法研究木薯渣与甜菜颗粒粕组合用作泌乳中后期奶牛饲料的可行性及适宜组合比例。试验设计7个处理:木薯渣分别以0%(对照组)、5%、10%、15%、20%、25%和30%与甜菜颗粒粕(风干物质基础)组合,使用AGRS-Ⅲ型微生物发酵产气系统进行体外瘤胃微生物发酵试验,监测体外培养3、6、12、24、48h后的发酵液pH、氨态氮(NH3-N)、微生物蛋白(MCP)含量和体外培养48h后干物质消失率(IVDMD)、累积产气量(GP)及挥发性脂肪酸(VFA)含量等指标。结果表明:体外培养48 h后,GP和底物的最大降解率(RmaxS)随木薯渣占比增加呈线性或二次增加(P<0.05);发酵液各VFA和TVFA含量均随木薯渣占比增加呈线性或二次降低(P<0.05);根据多项组合效应值,以0%组为对照时,5%组和10%组表现为正组合效应,其余组合均表现为负组合效应。在本试验条件下,当木薯渣与甜菜颗粒粕组合使用,且木薯渣为5%~10%较为适宜,但此结果仍需奶牛饲养试验进一步验证。  相似文献   

木薯渣发酵饲料及其发酵工艺与应用     

白秀梅  范彧  王丹玉  毕璐璐  刘雪连 《猪业科学》2021,38(5):86-89

文章旨在研究木薯渣发酵饲料及其发酵工艺与应用。将木薯渣、玉米面、豆粕、玉米皮、麸皮按照质量比50∶5∶10∶10∶25的比例混合,然后将乳酸菌和酵母菌按比例与一定量的水混合,再与木薯渣饲料混匀,装入带有呼吸阀的发酵袋中,密封,室温条件下发酵4 d即生产得到木薯渣发酵饲料。结果表明：乳酸菌和酵母菌混合比例为1∶2,接种量为0.1%,水分为40%～45%时,木薯渣发酵饲料pH<4.5,酸溶蛋白和总酸含量明显增加,具有明显的酸香气味,可提高适口性;可抑制霉菌生长,确保产品安全性;还可提高饲料的营养水平和猪只消化率,提高饲料利用率;提高猪只生产性能,降低圈舍氨气浓度,改善舍内环境;同时还为木薯渣资源化利用提供良好的前提条件。  相似文献   

云大-120浸种对木薯种茎发芽及某些生理生化特性的影响   总被引：2，自引：0，他引：2  

罗兴录 《种子》2004,23(1):18-20

本试验对云大-120浸种对木薯种茎发芽及某些生理生化特性的影响进行研究.结果表明,用云大-120 2000～4000倍液浸种,均可促进木薯种茎根芽萌发,提高发芽势和发芽率;促进种茎淀粉水解,提高种茎可溶性含量:增强抗坏血酸氧化酶的活性;提高幼苗呼吸强度;促进幼苗根系发育,增强根系活力;促进叶绿素形成,提高幼苗叶片叶绿素含量.不同浓度的云大-120溶液浸种的作用效果有明显差异,其中以3 000倍液浸种效果最好.  相似文献   

The Nutrient Quality of Cassava by Addition of Cow Rumen Fluid Enzyme     

S. Sandi  E. B. Laconi  A. Sudarman  K. G. Wiryawan  D. Mangunwijaja 《农业科学与技术》2011,(8):1122-1125

  相似文献   

Anthracnose of centipede grass caused by Colletotrichum caudatum     

Kazunori Fuke  Naofumi Hozumi  Yoshinari Enami  Kazuho Matsuura  Akitoshi Tajimi 《Journal of General Plant Pathology》2006,72(1):74-75

Anthracnose disease was found on centipede grass [Eremochloa ophiuroides (Munro) Hack.] planted as a ground cover on paddy field levees in Shiga Prefecture in 2004. The symptoms were ear blight, stalk blight, and leaf spots. The causal fungus was morphologically identified as Colletotrichum caudatum (Sacc.) Peck. This is the first report of centipede grass anthracnose caused by C. caudatum.  相似文献