Options for management of saline groundwater in an irrigated farming system

2004 ◽  
Vol 44 (2) ◽  
pp. 181 ◽  
Author(s):  
M. Bethune ◽  
O. A. Gyles ◽  
Q. J. Wang

Groundwater pumping is used to control salinity problems in many irrigation regions of Australia. Options for managing the pumped groundwater are required to be consistent with achieving high farm production levels and minimising salt export from irrigation regions. In this study, pasture production and economic aspects of 6 options for managing pumped groundwater are compared. The 6 options include (i) complete farm reuse of pumped groundwater for irrigation; (ii) complete export to river system; (iii) complete disposal to evaporation basin; (iv) partial farm reuse with reduced salt export; (v) partial farm reuse with reduced disposal to evaporation basin; and (vi) partial farm reuse with disposal to a salt tolerant forage crop. The comparison between the 6 options is made for a hypothetical 100 ha dairy farm that has a perennial pasture based production system. Complete farm reuse was the most economic option in areas where groundwater salinity is low (<5 dS/m). Partial farm reuse with disposal of surplus groundwater to a salt tolerant forage species was the most economical option for managing higher salinity groundwater.

1986 ◽  
Vol 26 (6) ◽  
pp. 669
Author(s):  
AF Heuperman ◽  
AP Repsys ◽  
AH Mehanni

The introduction of watertable control by groundwater pumping on a salt-affected dairy farm in the Goulburn Valley resulted in large increases in butter fat production. Since intensive pumping started, in 1981, watertable levels showed an overall downward trend but were still subject to major fluctuations caused by irrigation and rainfall. During this period butterfat production increased from about 300 to 390 kg/ha (of productive land) and yearly pasture production rose from about 560 to 650 t/ha DM. These productivity increases are attributed to both a reduction in average soil salinity in the top 60 cm of the profile from 2400 to 1200 mg total dissolved salts per kg dry soil and an increase in irrigation water use from less than 10 M litre/ha before to nearly 12 M litre/ha after pumping started.


Author(s):  
W.N. Reynolds

Following the 2007/08 drought, we experienced poor pasture production and persistence on our dairy farm in north Waikato, leading to decreased milksolids production and a greater reliance on bought-in feed. It is estimated that the cost of this to our farming operation was about $1300 per hectare per year in lost operating profit. While climate and black beetle were factors, they did not explain everything, and other factors were also involved. In the last 3 years we have changed our management strategies to better withstand dry summers, the catalyst for which was becoming the DairyNZ Pasture Improvement Focus Farm for the north Waikato. The major changes we made were to reduce stocking rate, actively manage pastures in summer to reduce over-grazing, and pay more attention to detail in our pasture renewal programme. To date the result has been a reduced need for pasture renewal, a lift in whole farm performance and increased profitability. Keywords: Focus farm, over-grazing, pasture management, pasture persistence, profitability


Author(s):  
C. Van der Geest

I am a 30-year-old sharemilker on my parent's 600 cow developing farm near Blackball on the western side of the Grey Valley. Earlier this year I competed in the National Young Farmer of the Year competition and finished a close third. So what is information? There are two types of information that I use. There is data gathered from my farm to help fine tune the running of the day to day operations on the farm And directional information This is the information that arrives in papers and directs the long-term direction and plans of the farm and farming businesses. Due to the variability in weather on the Coast there is a greater need to monitor and adjust the farming system compared to an area like Canterbury. This was shown last year (2001/02) when the farm was undergoing a rapid period of development and I was under time restraints from increasing the herd size, building a new shed as well as developing the farm. The results of the time pressure was that day to day information gathering was lower resulting in per cow production falling by 11% or around $182 per cow. So what information was lacking that caused this large drop in profit. • Pasture growth rates • Cow condition • Nitrogen requirements • Paddock performance • Milk production • Pre-mating heat detection As scientists and advisers I hear you say that it is the farmer's responsibility to gather and analyse this information. You have the bigger topics to research and discover, gene marking, improving pasture species, sexing of sperm and ideas that I have not even contemplated yet. This is indeed very valuable research. Where would farming be without the invention of electric fences, artificial breeding and nitrogen research? But my problem is to take a farm with below average production to the top 10% in production with the existing technology and farming principles. I have all the technical information I need at the end of a phone. I can and do ring my consultant, fertiliser rep, vet, neighbour and due to the size and openness of New Zealand science, at present if they do not know I can ring an expert in agronomy, nutrition, soils and receive the answer that I require. I hope that this openness remains as in a time of privatisation and cost cutting it is a true advantage. I feel that for myself the next leap in information is not in the growing of grass or production of milk but in the tools to collect, store and utilise that information. This being tied to a financial benefit to the farming business is the real reason that I farm. Think of the benefits of being able to read pasture cover on a motorbike instantly downloaded, overlaying cow intake with milk production, changes in cow weight, daily soil temperature and predicted nitrogen response. Telling me low producing cows and poor producing paddocks, any potential feed deficits or surpluses. This would be a powerful information tool to use. The majority of this information is already available but until the restraints of time and cost are removed from data gathering and storage, this will not happen.


2019 ◽  
Vol 121 (12) ◽  
pp. 3062-3075 ◽  
Author(s):  
Morgane Millet

Purpose The purpose of this paper is to understand how a geographical indication (GI) is built through time and how its (non)appropriation by local producers shapes it. The reciprocity of such process is also considered: how the creation of a GI changes local relationships between producers, within the GI and out of it? The case of Ossau-Iraty is relevant: in south-west of France, this protected designation of origin (PDO) has been based on two distinct regions: Bearn (Ossau) and Pays Basque (Iraty). Since then, most producers of Bearn have rejected this PDO. Design/methodology/approach The author adopts a diachronic perspective: the trajectory of the local dairy ewe sector is described, focusing on the trajectory of on-farm cheese makers from Bearn and Pays Basque and the trajectory of Ossau-Iraty. Based on different methods (qualitative interviews and archive research), this paper aims at analyzing the interactions within such heterogeneous networks. Findings When the PDO was created (1980), the opposition between producers of Bearn and Pays Basque was based on strong senses of place, which would be translated in a different perception of tradition: to Bearn producers, PDO Ossau-Iraty would be an industrial cheese, in which they did not recognize their product and themselves. With time, the producers who have been involved in the PDO worked on its specifications. The recognition of symbolic practices such as on-farm production or Summer pasture production, the recognition of differences between Basque cheese and Bearn cheese are changes that contribute to the evolution of perceptions within the local producers’ community. The author observes a recent convergence between Basque producers and Bearn producers, as their distinct products share common and strong qualifications within PDO Ossau-Iraty that contribute to their respective valorization. However, it seems to occur at an institutional level and the adhesion of the local producers might still be at stakes. Research limitations/implications A statistical study could reinforce the author’s exploratory and historical research. Furthermore, it would have been relevant to take local inhabitants and local consumers into account, as they have participated in the products’ qualifications as well. Originality/value A long-term analysis (40 years) contributes to better understand how cheeses are valorized and how such process is based on controversial processes. It contributes to root GIs into local histories, which are nor as consensual neither as uniform as we would primarily think, and to identity levers for sustainable local development.


Author(s):  
Thomas Koutsos ◽  
Georgios Menexes

Precision agriculture (PA) as an integrated information- and production-based farming system is designed to delivery high-end technology solutions to increase farm production efficiency and profitability while minimizing environmental impacts on the ecosystems and the environment. PA technologies are technology innovations that incorporate recent advances in modern agriculture providing evidence for lower production costs, increased farming efficiency and reduced impacts. However, the adoption of the precision agriculture technologies has encountered difficulties such as additional application or management costs and investment on new equipment and trained employees. Some of these PA technologies were proven efficient, providing tangible benefits with lower costs and as a result they quickly gained scientific interest. To investigate further the economic, agronomic, and environmental benefits from the adoption of PA technologies a systematic review was conducted, based on the systematic search and evaluation of related eligible articles.


2008 ◽  
Vol 24 (1) ◽  
pp. 25-37 ◽  
Author(s):  
Caroline Brock ◽  
Bradford Barham

AbstractAlthough the emergence of large confinement operations out of a system previously dominated by mid-sized confinement has been one major structural trend in Wisconsin dairy farming since the 1990s, a second structural trend has been the significant emergence of moderate-sized dairy farms using alternative management strategies: management-intensive rotational grazing (MIRG) (25% of Wisconsin's dairy farms), organic production (3%) and Amish farm production practices (5–7%). This paper presents the first systematic and representative comparative study on the structure, behavior and performance of multiple pasture-based dairy farm strategies. Wisconsin is an ideal site for this study given the prevalence of pasture-based farms, yet many of the findings here should be relevant for other traditional dairy states where similar types of alternative farm management systems are also emerging. Divergence with respect to farm strategy has implications for structure, technology and management adoption patterns as well as farmer satisfaction levels. Our findings suggest that alternative dairy farming systems are likely to become more prevalent on the agricultural landscape of Wisconsin.


Author(s):  
Pushpendra Saroj ◽  
Ranjay Kumar Singh ◽  
Dharma Oraon ◽  
Zunaid Alam

The study was conducted on purposively selected Mardanpur village of Chatra block in Chatra district where Sri. Danbhushan Lakra, Progressive farmer has developed a unique model of integrated farming system (IFS) in his 5 acres of the farm. He has designed the farm and segregated the land as per the crops and animal requirement. The IFS model comprised of field crops in 2 acres, vegetables in 1 acre, fruit plants in 0.5 acres, a pig farm in 0.25 acre, a dairy farm in 0.25 acre, Poultry in 0.25 acre, composite fish farming in 0.75 acres. Sri Danbhushan Lakra has adopted the best practices of farming under technological support of Krishi Vigyan Kendra, Chatra. The productivity and economic return of different enterprises and commodities were calculated and compared with previous productivity and economics. The result indicated that Sri. Danbhushan Lakra has got more than 80 per cent additional yield and profit on different enterprises, which are integrated into the farming system. He has reduced 60% external input like the feed of animal, chemical fertilizer requirement, overall he earns the annual net income Rs. 94430.75 that is 68.6% more as compared to his previous income. It happens due to the interrelation set of enterprises used so that the waste from one component became input for another part of the system, which reduced cost and increased productivity.


Author(s):  
T.K. James ◽  
A. Rahman ◽  
M.J. Cornwell

Trials were carried out in spring and autumn at two locations in New Zealand to measure the effects of metsulfuron-methyl on pasture production and composition. Metsulfuron-methyl at 3-12 g/ha resulted in 20-45% loss of herbage production. This was particularly evident for two months after spraying, with no significant reduction in dry matter yield 3 months after treatment in spring. The effect on pasture composition was more persistent. Metsulfuron-methyl, along with clopyralid and picloram + 2,4-D completely removed the clover for the three month duration of the trial. The consequences of broadcast application of these herbicides in pasture need to be considered in the context of the overall farming system.


Author(s):  
R.N. Jensen ◽  
D.A. Clark ◽  
K.A. Macdonald

The aim of the Resource Efficient Dairying (RED) trial is to measure the productivity, economic and environmental effects of different feed inputs and management processes on a dairy farm. This is a longterm systems trial located at Scott Farm (Dexcel Research Farm) established on 1st June 2001 and expected to continue until 2006. Trial design was based on six systems that have an allowance of up to 200 kg nitrogen (N)/ha (excluding the low input treatment). They are: low input (no N fertiliser, heifers grazed-on and 2.3 cows/ha); control (3 cows/ha); standoff (3 cows/ha); low supplement input (5 t dry matter (DM) maize silage/ha, 3.8 cows/ha); moderate supplement input (10 t DM maize silage/ha; 5.2 cows/ha); and high supplement input (15 t DM maize silage + 5 t soymeal/ha; 6.9 cows/ha). The last two systems have irrigation available to boost pasture production. All systems were designed to operate at a common comparative stocking rate (CSR) of 85 kg liveweight (LW)/t DM. Two seasons' data have shown that increasing the stocking rate (SR) by 1.5 cows/ha from 3.8 to 5.3 cows/ha, plus extra feed, increased output by 90 and 184 kg milksolids (MS)/total ha in the two years, when the extra area required to supply the extra feed is included in the calculation of kg MS/ha. However the further increase to 6.9 cows/ha plus extra feed produced less MS/total ha than the system stocked at 3.8 cows/ha. Calculations of economic farm surplus (EFS) and return on assets (ROA) reveal that when the payout is $3.50/kg MS the low input system is competitive irrespective of land price ($18000 or $37000/ha) or supplement cost (18 c or 24 c/kg DM). Conversely at a higher payout of $4.50/kg MS the treatment supplemented with 10 t maize silage DM/ha is competitive over the range of land prices and supplement costs tested. Keywords: dairy cows, economic evaluation, maize silage, milksolids, nitrogen fertiliser, stocking rate


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