Journal of Vegetable Crop Production最新文献_第9页

Growth and Flowering of Five Lettuce Cultivars as Affected by Planting Date 播期对5个生菜品种生长和开花的影响

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_05

A. Al-harbi

引用次数: 13

THE EDITOR'S FIELD 编辑的领域

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/j068v07n01_01

M. Robbins

引用次数: 0

Improvement of Vegetable Quality and Water and Fertilizer Utilization in Low-Tech Greenhouses Through a Decision Support Management System 基于决策支持管理系统的低技术温室蔬菜品质与水肥利用改善

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_09

H. Passam, A. Sideridis, C. Yialouris, M. T. Maliappis

{"title":"Improvement of Vegetable Quality and Water and Fertilizer Utilization in Low-Tech Greenhouses Through a Decision Support Management System","authors":"H. Passam, A. Sideridis, C. Yialouris, M. T. Maliappis","doi":"10.1300/J068v07n01_09","DOIUrl":"https://doi.org/10.1300/J068v07n01_09","url":null,"abstract":"ABSTRACT A comprehensive decision support management system for the cultivation of six vegetable crops (tomato, cucumber, melon, eggplant, pepper and lettuce) in low technology plastic-covered greenhouses is described. The system consists of: (1) an irrigation and nutrition management module that defines the daily water and fertilizer requirements of each crop primarily on the basis of information derived from a simple evaporimeter, (2) a diagnostic expert system for the identification and confrontation of pests, diseases and nutritional disorders, and (3) a number of information modules that provide the grower with advice on specific cultivation procedures (e.g., propagation, greenhouse preparation, plant care, harvest, post-harvest packaging, storage and marketing). The system utilizes a core of knowledge base (core KB), which contains information common to all crops, supplemented by individual KB's containing knowledge that is specific to each particular crop. This interaction of core and crop-specific KB's enables maximum economy of information storage and minimizes redundancy. The system is simple to operate and does not require hardware other than a personal computer and a simple, inexpensive evaporimeter. It has been tested over a period of three years during which time a saving of 15–30% in irrigation water and fertilizer consumption was achieved.","PeriodicalId":169819,"journal":{"name":"Journal of Vegetable Crop Production","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133943427","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}

引用次数: 8

Effect of Sowing Date on the Incidence and Severity of Okra Mosaic Tymovirus 播期对秋葵花叶Tymovirus发病及严重程度的影响

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_04

M. Alegbejo

引用次数: 12

Biomass Yield and Flower Production in Sunn Hemp: Effect of Cutting the Main Stem 太阳麻生物量产量和花产量:主茎剪断的影响

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_10

A. Abdul-baki, H. Bryan, G. Zinati, W. Klassen, M. Codallo, N. Heckert

{"title":"Biomass Yield and Flower Production in Sunn Hemp: Effect of Cutting the Main Stem","authors":"A. Abdul-baki, H. Bryan, G. Zinati, W. Klassen, M. Codallo, N. Heckert","doi":"10.1300/J068v07n01_10","DOIUrl":"https://doi.org/10.1300/J068v07n01_10","url":null,"abstract":"ABSTRACT A field experiment was conducted at the Tropical Research and Education Center, University of Florida, Homestead, to determine the effects on plant morphology, biomass yield, and flower production. of cutting the main stem of sunn hemp (Crotalaria juncea L.) plants at different heights. Seeds treated with cowpea (Vigua unguicalata)-type rhizobium were sown on 15 April 1999. The main stems were cut at 30, 60, and 90 cm above soil surface 100 days after seeding when the plants were about 1.5 m tall. Control plants were left uncut. Biomass that had been cut from plants was included in the total biomass yield. Seventy days following stem cutting, individual plants were evaluated for: plant height; main stem diameter; fresh and dry weights of roots, main stems, primary branches, secondary branches, leaves, open flowers, and unopened flowers. Leaf area and nutritional analyses of the plant parts were determined. Cutting the main stem at 30 and 60 cm above soil surface reduced total plant biomass, whereas cutting at 90 cm height increased biomass yield. Cutting at 30 cm produced the highest quality of biomass by increasing the leaf yield and reducing the weights of root and main stem both of which are low in N and high in C/N. Cutting the main stem at 90 cm produced the highest biomass yield, increased the number and weight of primary and secondary branches and, consequently, increased the number of flowers per plant. Nitrogen was highest in flowers and lowest in roots and main stems. Flowers were highest in K, P, Zn and Cu, whereas roots were highest in Fe content. We conclude that cutting the main stem at 30 cm height and allowing the plants to grow for an additional 70 d result in the highest quality biomass for use as green manure, windbreaks, and mulch. Cutting at 90 cm produced the largest biomass yield and increased flower production.","PeriodicalId":169819,"journal":{"name":"Journal of Vegetable Crop Production","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128145779","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}

引用次数: 34

Utilization of Wild Forms of the Mushroom Coprinus comatus (Müll.) S. F. Gray in Breeding of Commercial Strains 野生型鸡茸的利用S. F. Gray在商业品系育种上的研究

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_02

M. Siwulski, K. Sobieralski, R. Pawlak

引用次数: 4

Mineral Nutrition of Leafy Vegetable Crops Irrigated with Saline Drainage Water 含盐排水灌溉叶菜作物的矿质营养

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_06

C. Grieve, M. Shannon, J. Poss

{"title":"Mineral Nutrition of Leafy Vegetable Crops Irrigated with Saline Drainage Water","authors":"C. Grieve, M. Shannon, J. Poss","doi":"10.1300/J068v07n01_06","DOIUrl":"https://doi.org/10.1300/J068v07n01_06","url":null,"abstract":"ABSTRACT Nine leafy vegetable crops were grown in outdoor sand plots to determine the effects of salinity and the timing of salt stress on leaf-ion concentration. Vegetable species were: radicchio (Cichorium intybus L.), curly endive (C. endivia L.), pac choi (Brassica rapa L., chinensis group), tatsoi (B. rapa L., narinosa group), kale (B. oleracea, acephala group), cooking greens (B. rapa L.), mustard greens (B. juncea (L.) Czerniak), spinach (Spinacia oleracea L.), and Swiss chard (Beta vulgaris L.). All species were planted at the same time and irrigated with a complete nutrient solution. Three weeks after planting, six saline treatments were imposed on half of the plants; the remaining plants were salinized four weeks later. Saline solution compositions were prepared to simulate the high-sodium, high-sulfate drainage waters typically found in the San Joaquin Valley of California. Electrical conductivities of the irrigation waters (ECi) were 3 (control), 7, 11, 15, 19, and 23 dS.m−1. Mineral ion concentrations in leaves were significantly affected by increasing salinity, but not by the stage of growth when salinity was applied. With increasing salinity, Ca2+ and K+ decreased in the leaves of all species, whereas Na+ and total-S significantly increased. Magnesium in leaves of the composites and the crucifers also increased with salinity, but treatment had no effect on Mg2+ concentration in the chenopods. Increases in salinity caused significant increases in Cl− in leaves of the crucifers and spinach but had no influence on the Cl− relations in Swiss chard and the composites. The use of moderately saline irrigation waters for the production of these leafy vegetable crops did not adversely affect crop quality as rated by color, texture and the mineral nutrient content available to consumers.","PeriodicalId":169819,"journal":{"name":"Journal of Vegetable Crop Production","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116251614","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}

引用次数: 27

Pretransplant Nutritional Conditioning Effects on Seedling Growth and on Fruit Yield in Muskmelon 移栽前营养调节对甜瓜幼苗生长和果实产量的影响

Journal of Vegetable Crop Production Pub Date : 2001-05-30 DOI: 10.1300/J068v07n01_07

M. Edelstein, H. Nerson

引用次数: 4

Broadcast vs. Band Fertilizer Applications on Summer Squash 夏南瓜撒播与带状施肥

Journal of Vegetable Crop Production Pub Date : 2000-12-29 DOI: 10.1300/J068v06n02_04

R. L. Parish, R. Bracy, J. E. Mccoy

引用次数: 2

American Society of Agricultural Engineers Annual Meeting 2000 2000年美国农业工程师学会年会

Journal of Vegetable Crop Production Pub Date : 2000-12-29 DOI: 10.1300/J068V06N02_11

R. L. Parish

引用次数: 1