Posts tagged Drain
Factors to consider when draining rice (February 2015)


This NSW DPI Primefact sheet is and overview of the guidelines to take into consideration when considering draining rice. The fact sheets covers areas such as the variety selection and time of sowing, the water management after flowering. It covers the key factors such as field layout, crop nitrogen, time when crop maturing , sowing methods, time of draining, grain development stages soil types and who and where to contact for further information. 

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Have I enough water to finish my rice crop? (November 2006)

Monthly water budgets to compare crop water requirements and available allocations are very important.  If crop needs are likely to exceed supply then decisions about buying extra water or reducing the area of rice by draining must be made. The information can help rice growers calculate their water needs and compare this with available supplies.

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Downloading weather data with maNage rice version 5.1 (2002)

This IREC Farmer Newsletter article is information regarding Downloading weather data with manage rice version 5.1.  The latest version of maNage Rice has an option to download temperature an solar radiation data from the internet. The data are used to predict stage of rice development and yield response to topdressed nitrogen, and can also be graphed to show the difference from average. Details are provided on how rice growers and advisers can obtain free copies and the computer requirements for running this program. Future versions are planned with more use of downloaded weather data for example, optimum draining date and grain cracking in relation to harvest date.

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Best bed guidelines for rice on beds (2002)


The possibility of growing rice on beds presents a number of challenges compared with the conventional way of growing rice. Beds have been used in other rice-growing regions in the world to reduce water use but in southern NSW the greatest benefit appears to be the flexibility the system offers for row cropping.  Growing rice on raised beds enables the rice phase to fit easily in a row cropping system Bankless channels, terracing and perhaps 1roof-topping' appears to be the best option to provide good surface drainage for the rice and other crops in the system Bed design of up to 1.8 m width works well, enabling 6 to 7 rows on the bed top.  Total nitrogen rates should be 33% higher for beds compared with conventional rice growing.  Field selection is a major consideration in weed management strategies.  Keep water shallow ponded or in the furrows until physiological maturity.

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Measurements of losses from on farm channels and drains (2001)

This CRC funded project had two main aims including to determine the magnitude of percolation losses attributable to on-farm channels and drains. The second major aim was to consider approaches and for need to identify problem were and to consider likely remediation techniques. The project was undertaken
within selected farms in Coleambally and Murrumbidgee Irrigation Areas in southern NSW during the irrigation seasons of 1997/98, 1998/99 and 1999/00. To undertake the points of infiltration the Idaho Seepage Meter was used as a result of being rapid, direct and cheap. The study investigation were undertaken on farm trials using EM31, Peizometer measurements, soil texture and salinity measurements, channel distribution on farm, channel seepage metres, inflow and out flow and depth of flow channel width. The conclusion of the project indicated that EM31 reading were strongly related to change in seepage rate. It was stated that area’s of low conductivity compared to surrounding areas inferred that the leakage rate was high. It was also stated soil types and water depth in the centre of channels or drains are the most important channel factors with respect to seepage in the on-farm channels and drains. It was indicated that seepage magnitude is affected considerably by the width of the channel. The EM31 measurements provide very good results for the identification and quantification of seepage.  Additionally the combination of the Idaho seepage meter and EM31 measurement provided a good technique for the identification and quantification of seepage from sections of the on-farm channels and drains.

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Microwaving rice may help grain moisture determination (August 2001)


This IREC Farmers Newsletter article presents information on how to undertake the microwaving method and using a microwave to estimate grain moisture. It states a microwave oven and kitchen balance may lead to better decisions for lock up or drainage for rice harvest, by providing a quick and simple estimate for grain moisture. The article concluded that drying grain in a microwave oven has the potential to be rapid measure of grain moisture. The method could be used to track the moisture content of the grain as the grain progresses towards harvest as well as for determining moisture at a particular point in time, eg lock up prior to harvest. 

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Is nitrogen really limiting rice yields (August 2001)

This IREC Farmers Newsletter present information the issue of pre flooded nitrogen verse top dressing and yield comparisons. The article states that trial work and computer models predict that pre flooded nitrogen is more efficient than top dressed nitrogen however grower experience would suggest otherwise. Possible reasons presented by researchers include over sampling at PI, pre flood loss of nitrogen, “insurance” application of nitrogen, poorly drained areas and paddock variation may explain pre flooded nitrogen application are not as efficient as agronomist expect. The article states that research for possible explanation continue. 

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2nd International Rice Conference- A growers perspective (2000)

This IREC Farmers Newsletter article is presents information through a growers perspective of the 2nd Temperate Rice conference. The grower presents  a brief overview of information from the conference on breeding, marketing , drainage, chemical, environmental issues, soil management and stubble. The grower also presents and overview of the post conference tour.

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Why rice check has been so sucessful (June 1997)

This IREC Farmers Newsletter article presents information on the success of Rice check. Rice check commenced in 1986 and after 11 years is still the basis for delivery o recommendations to farmers in the rice industry. According to this article discussion groups have played a key role in the success as has the team effort. The team consisted of farmers, researchers, extension officers, education and agribuisness all who have contributed, learned and shared their skills. 

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Management of rice using saline bore irrigation water. (June 1995)

This IREC Farmers Newsletter article presents information on the management of rice using saline bore irrigation water. The article states that good irrigation layouts and continued monitoring of rice bay water salinity are fundamentally significant in maintaining low water salinity and achieving optimum yields when utilising deep bore water or growing rice on saline soils for rice production. The article discusses area such as ground preparation, water management, monitoring of rice ground, bores, bays and salinity, crop management, rice drainage and herbicide management. 

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