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March 2011

February 2011

Turf Science Seminar 2011 at Tokyo and Osaka

Osaka_seminar
Yesterday's seminar at Osaka was last of six seminars I've done this winter in the Turf Science Seminar 2011 series (ターフ・サイエンス・セミナー2011) at Tokyo and Osaka. These intensive full day seminars covered topics such as the effect of temperature on photosynthesis and photorespiration, the role of nitrogen in controlling the growth rate of the grass, the development and application of growth potential models for turfgrass, and a review of the most interesting new turfgrass research from the past year. 

Yukio Ueno provided his usual excellent translation of the seminars, seminar workbooks, and presentation slides. The seminars were supported by Toro, Syngenta, and Simplot, allowing us to offer this educational program at a subsidized cost to the more than 240 greenkeepers who attended.

The seminar workbooks are available to download here:

I would like to thank all the greenkeepers who took time out of their busy schedules to attend these seminars. And I look forward to more seminars next winter when we can cover more turfgrass science subjects.


Honda LPGA Thailand and Asian Turfgrass Field Day

This week brings the season-opening event on the LPGA Tour to Thailand's Siam Country Club. Defending champion Ai Miyazato and #1-ranked Yani Tseng headline the stellar field. The tournament is being contested over seashore paspalum fairways (Salam variety) and hybrid bermudagrass greens (Novotek variety).

Siam_cc

Sittichai Dusadeeporn is the Director of Golf Course Maintenance at Siam CC and will be speaking at the Sustainable Turfgrass Management in Asia 2011 conference about how he prepares the course for an LPGA tournament. And our first stop on the Asian Turfgrass Field Day will be Siam CC where we will see these grasses and just a few weeks after the tournament.

Field_day_test_plots
From Siam CC, we will proceed to other area golf courses to look at test plots of products and maintenance techniques applied to different grasses. Some of the highlights include:

  • Control of zoysiagrass seedheads with imazapic
  • Conversion to new grass using glyphosate or dazomet
  • Playability of different grass types and practical use of measuring equipment
  • Are pre-emergent herbicides useful in the management of turfgrass in SE Asia?
  • Control of bermudagrass in seashore paspalum
  • Control of seashore paspalum in bermudagrass
  • Evaluation of new herbicides for weed control
  • Comparison of different types of zoysiagrass
  • Organic matter management in sand rootzoones

The field day will conclude at Laem Chabang International CC with a look at different nozzle types for effective spraying and the use of water-sensitive paper (always interesting!) to demonstrate that, along with a few other turfgrass equipment demonstrations and then a fun golf game around the chipping course. Michelle Wie is in Thailand now for the LPGA tournament and said "Everyone is so nice and welcoming in Thailand. I love it!" You will too, so if you are planning to attend this fun and educational conference, get your registration form submitted now to hold your place.

Chipping_laem_chabang


Speaking at Philippine Turfgrass Association Meeting March 3

Fairways_bcay I'm really looking forward to the upcoming first quarterly meeting of the Philippine Turfgrass Association to be held at Sta. Elena Golf Club in Laguna on March 3. I'll be speaking on the topic of Application of Turfgrass Science Principles to Improve Grass Conditions. The morning seminar program will be about the modifications that golf course superintendents can make to the growing environment for bermudagrass, seashore paspalum, zoysiagrass, or carabao grass in order to produce the desired playing surface. Click here to register for the meeting.


Collecting Dollar Spot With Dr. Tredway in Southeast Asia

Lane_khao_yai Turfgrass pathologist Dr. Lane Tredway from North Carolina State University recently made a visit to Southeast Asia for the purpose of collecting dollar spot samples. From ATC's Thailand base, we went to Vietnam, Malaysia, and the Philippines to collect dollar spot from many different grass types: bermudagrass, zoysia, seashore paspalum, carpetgrass, creeping bentgrass — even from some sedges. There is not much creeping bentgrass in Southeast Asia but we traveled to high elevations to find it at Dalat in Vietnam, at the spectacular Mount Kinabalu Golf Club in Sabah (below), and at Camp John Hay in Baguio.

Lane_kinabalu

Dr. Tredway has chronicled this trip in a post entitled Dollar Spot Expedition to Southeast Asia on the Turf Diseases website

Dollar_paspalum_khaoyai Dollar spot is ubiquitous and is especially so on seashore paspalum turf. This project looks at the different strains of dollar spot as they are found on different grass types and in different geographical and climatic areas. The idea is that a better understanding of the dollar spot pathogen itself will allow for the development of better control measures for this disease in the future.


Research on Weed Populations in Malaysia

Weed_malaysia One of the papers I found most interesting last year was Characterizing Weed Populations in Different Turfgrass Sites throughout the Klang Valley of Western Peninsular Malaysia (Uddin et al., 2010). Weeds are one of the biggest challenges facing turfgrass managers in tropical Asia. Uddin's survey of 53 sites in the Klang Valley included seventeen athletic fields, six sod farms, nineteen residential lawns, and eleven golf courses.

In total, 79 different weed species were identified in this survey, with 63 of the species being found in lawns, 29 on athletic fields, 25 on sod farms, and 23 on golf courses. Some of the most pervasive weeds were the sedges Cyperus aromaticus and Cyperus compressus along with grasses Chrysopogon aciculatus, Eleusine indica, and Digitaria fuscescens.

In three bermudagrass fields, 37 weed species were found. In three manilagrass (Zoysia matrella) fields, there were less than half as many species present. Only seventeen weed species were found in the manilagrass fields compared with 37 in the bermudagrass fields. Wiecko (2000) wrote about the challenges of growing bermudagrass in tropical Asia and this survey confirms quantitatively what turfgrass managers in Asia see every day: bermudagrass is easily infested with weeds, while manilagrass produces a dense sward that has comparatively few weeds.