Browsing by Author "Wahab, J."
Now showing 1 - 11 of 11
Results Per Page
Sort Options
Item Agronomic research on commercially important herbs(2000-02-22) Wahab, J.; Larson, G.Natural products are becoming increasingly popular as food flavouring and cosmetic and as health supplements in Europe and North America. Presently, the herb and spice industry is expanding very rapidly in Canada, and Saskatchewan is one of the provinces in the forefront. To address the needs of this developing industry, the Canada-Saskatchewan Irrigation Diversification Centre (CSIDC) has expanded the herb research and development program with the objective of developing cost effective and labour saving production practices for commercial scale production of important herbs. This project is being conducted with financial support from the Canada-Saskatchewan Agri-Food Innovation Fund and with market directions from the Saskatchewan Herb and Spice Association. The main goals of the CSIDC’s herb research and development program include (i) evaluating the adaptability of promising herbs to Saskatchewan growing conditions, (ii) developing labour saving management practices for mechanized commercial production, (iii) comparing the effects dryland and irrigated production on yield and quality, and (iv) identifying appropriate production and harvest methods to increase yield and improve quality. The herb species included in the agronomic studies include Echinacea angustifolia, feverfew, German chamomile, milk thistle, stinging nettle, and St John’s wort. Many other aromatic, culinary, and medicinal herbs are also being evaluated in observational plots. Preliminary results from the various studies on Echinacea angustifolia conducted at the CSIDC are summarized in this paper.Item Controlled-release urea, is it a viable nitrogen source for irrigated potato?(1995-02-23) Wahab, J.; Hogg, T.Item Do potatoes respond to nitrogen and phosphorus placement?(2003-02-18) Wahab, J.; Larson, G.Potato requires large amounts of fertilizer. Proper fertility management is essential to optimize potato yield and quality under the relatively cool and short growing conditions in Saskatchewan. Important aspects of fertility management include rate, placement, and timing of fertilizer. This study examined the effects of placement (broadcast, side-band) of nitrogen and phosphorus fertilizer on productivity for contrasting potato cultivars (Atlantic, Norland, Ranger Russet, Russet Burbank, Russet Norkotah, Shepody) grown under dryland and irrigated conditions. Three pre-plant nitrogen rates (50, 100, 150 kg N/ha) and three pre-plant phosphorus rates (40, 80, 120 kg P2O5/ha) were tested in separate trials. In the nitrogen study under dryland, the average ‘seed’ and ‘consumption’ grade yields were 25 and 19 t/ha respectively. Under irrigation, ‘seed’ and ‘consumption’ grade yields averaged 40 t/ha. Nitrogen application method or rate had no effect on ‘seed’ or ‘consumption’ grade yields under both dryland and irrigated production. In the phosphorus study, the average dryland yields for ‘seed’ and ‘consumption’ grade tubers were 24 and 19 t/ha respectively. Under irrigation, ‘seed’ and ‘consumption’ grade yields averaged 38 and 34 t/ha respectively. Under irrigation, the rate and method of phosphorus application had no effect on tuber yields. Under dryland, there was no significant effect of rate of phosphorus on tuber yield. Side-banding tended to produce higher ‘seed’ and ‘consumption’ grade yields than broadcast application. Cultivars responded differently under dryland and irrigated production. The various cultivars responded similarly to rates and methods of nitrogen and phosphorus application under both production conditions. Further work is necessary to verify the effects of rate and method of nitrogen and phosphorus application on yield and quality of potato cultivars grown commercially under dryland and under irrigation in Saskatchewan.Item The effect of phosphorus and potassium fertilization on irrigated pea production(1994-02-24) Hogg, T.J.; Wahab, J.Item Effects of canola, wheat and faba bean on yield and nitrogen use efficiency in potato production systems(2018-03-06) Verburg, E.; Lemke, R.; Farrell, R.; Wahab, J.; Tomasiewicz, D.Item Growing irrigated lentil(1994-02-24) Wahab, J.; Vandenberg, B.; Hogg, T.; Buchwaldt, L.Since 1987, research was conducted at the Saskatchewan Irrigation Development Centre (SIDC), Outlook, to develop technology suitable for irrigated lentil (Lens culinaris Medikus) production. Diverse germplasm and various management practices were evaluated. Under irrigation, Eston, CDC Richlea, and Rose lentil produced higher seed yield than Laird. Supplemental irrigation of Eston produced marked yield increases in the low rainfall years. For example, in 1988 which received 95 mm (3.8 in) of precipitation during the growing season, addition of 130 mm (5.1 in) and 225 mm (8.9 in) of water produced approximately a 5-6 fold yield advantage. Excessive irrigation in wet years or at flowering reduced yield, likely through excessive vegetative growth and increased disease incidence. Under excess moisture conditions, Eston and Laird were more susceptible to diseases than CDC Richlea, or 458-57. Seeding rates (100 plants/m2, i.e. 9-10 plants/ft2) and row-spacing (20 em, i.e. 8 in) recommended for dryland production appeared suitable for irrigation although in one year, positive yield responses were obtained up to a population density of 175 plant/m2.Item Herb development program: Saskatchewan irrigation development centre(1998-02-19) Wahab, J.; Burns, C.Item Irrigation and seed piece spacing effects on potato seed-tuber yield(1997-02-20) Wahab, J.; Waterer, D.; Hogg, T.The seed potato industry is the most rapidly growing sector in the horticultural industry in Saskatchewan. The phenomenon of ‘Northern Vigour’ and the reduced levels of tuber-borne diseases and pests on the prairies make the Canadian prairies, including Saskatchewan, producers of high quality seed potato. This is reflected in the increasing exports of seed potato to the USA, Mexico, and other markets. In Saskatchewan, seed potatoes are grown both under dryland and irrigated conditions. Small tubers are preferred as seed potato relative to processing or table stock. Cultural practices suited to produce maximum yields of seed grade tubers (30-80 mm diameter tubers) are different from producing larger table or processing potatoes (>45 mm diameter tubers). The effects of moisture stress vary among cultivars. The different growth and tuberization characteristics of potato cultivars can further complicate management considerations such as fertility practices, plant population, etc. With steadily increasing input and other production costs, it is essential to develop appropriate, cultivar(s) specific, management practices to produce high quality (physiologically vigorous and disease-free) seed potato and to maximize economic returns. The Saskatchewan Irrigation Development Centre (SIDC) and the Department of Horticulture Science, University of Saskatchewan are jointly developing management practices to optimize yields of high quality seed potato. This project includes cultivars targeted for both domestic and export markets. Various aspects such as, land preparation, fertility requirement, seed piece spacing, irrigation scheduling, seed piece form/type, and plant population are being studied. This paper summarizes data from preliminary studies conducted during 1994 and 1995 at SIDC designed to examine irrigation and in-row seed piece spacing effects on seed grade tuber yield.Item Potatoes respond to irrigation and seed piece spacing(1998-02-19) Wahab, J.; Hogg, T.The Potato industry is expanding very rapidly in Saskatchewan. It is a high value crop that requires intensive management and significant inputs. Profitable potato production demands suitable agronomic practices including careful water management and appropriate plant stand. Proper stand establishment and water management is critical to maximize yields and ensure tuber quality for seed, processing, or table potato. Excess or deficient moisture conditions can significantly affect both yield and quality. Water requirement and plant density can vary for different cultivars depending on the intended market class. A study was conducted at the Saskatchewan Irrigation Development Centre to examine the effects of seed piece spacing (15,20,30 cm) for five potato cultivars (Atlantic, Norland, Russet Burbank, Russet Norkotah, and Shepody) on ‘seed’ and ‘consumption’ grade tuber yield when grown under different moisture levels. Standard management practices were used to raise the crop. The desired soil moisture levels were maintained through supplemental irrigation based on tensiometer readings (60 cm depth). Growing season soil moisture status was monitored using a neutron moisture meter. The crop was harvested at maturity. Grading was done according to tuber diameter. ‘Seed’ grade included tubers <90 mm diameter, and ‘consumption’ grade included tubers > 45 mm diameter. This poster summarizes the effects of irrigation and seed piece spacing on water use and tuber yields (‘seed’ and ‘consumption’ grade) for the five potato cultivars.Item Seed potato! A “vigorous” proposition for Saskatchewan(1996-02-22) Wahab, J.; Waterer, D.; Hogg, T.Item What is new in herb agronomy: the Saskatchewan experience(1999-02-25) Wahab, J.