scholarly journals Use of capital fertiliser and lime to improve pasture production in Northland

Author(s):  
M.B. O'Connor ◽  
B.J. Hunt

Previous research in Northland identified the requirements for phosphate and lime in pasture development. Large capital inputs were necessary (1.8-2.0 t superphosphate and 2.5-5 t lime/ha in the first 12-18 months). More recently (1990-1993) three trials have been conducted on typical unimproved or improved hill country pasture in Northland to investigate lime (rates and frequencies) and phosphate (rates and forms) requirements. Results show that capital inputs of both fertiliser and lime are still very necessary in Northland. Marked responses occurred in the trials, with an average 40% increase to P and 16% increase to lime. The need for a soluble fertiliser like superphosphate was highlighted. In practice the aim must be to get as much of the potentially high producing land as possible into the soil test ranges for maximising pasture production. Improvement programmes need to be tailored to the individual farm. In dairying, improvement programmes can be completed relatively quickly (l-2 years) given the current economic situation, but in hill country the programme must of necessity be longer term (4-5 years). Emphasis must first be on developing the land with the highest potential. In time, areas with lower productive potential can also be considered for improvement, although alternative sustainable land use options should also be considered. Keywords: capital inputs, fertilisers, lime, optimum soil tests, phosphate, soil fertility

Author(s):  
Robert Hecht ◽  
Martin Behnisch ◽  
Hendrik Herold

AbstractGeospatial analysis and visualisation can be used to gain knowledge about land use structure and its changes on different spatial scales, which in turn is key to unlock the potential for sustainable land use development. This editorial provides a frame to a set of papers of the topical collection “Innovative approaches, tools and visualization techniques for analyzing land use structures and dynamics of cities and regions”, which was initiated in conjunction with the 2017 International Land Use Symposium taken place in Dresden, Germany. It first introduces current, urging land use, development and management challenges. Further on, the editorial presents the individual contributions and reflects their affiliation to the themes “Mapping and Monitoring Approaches” and “Planning, Decision Support and Participation”. Although the objectives, methods and underlying data used in the papers of this topical collection greatly vary, as pieces of a puzzle they contribute to a better analysis and understanding of current and future land use structures and dynamics of cities and regions.


Author(s):  
M.C. Wheadon

Based on research findings and observation, a dairy farm pasture management system is presented that could result in an increased per hectare milkfat production and profitability. In autumn there should be a change away from milk production towards pasture management and cow condition by using strategic drying off of cows relevant to the individual farm situation. This is probably the most important decision made each year. As winter pasture production is inadequate to meet cow maintenance and pregnancy requirements, cow condition should be at the level required for calving by the start of winter. The use of supplements conserved from summer' surpluses to specifically 'in-' crease cow condition in winter is of marginal economic value. They should be used primarily in autumn to produce extra pasture to be available for later use in winter. The matching of correct drying-off date, calving date and stocking rate to the pasture growth curve for the region, and an appreciation of correct feeding levels at the different stages of lactation are important.


2016 ◽  
Vol 16 ◽  
pp. 151-155
Author(s):  
D. Cameron

Key message summary • Farm plans have been an integral part of assisting landowners to manage eroding hill country in the Wellington region • Land Use Capability (LUC) mapping is a key tool in prioritising investment in erosion control and land development programmes • Improving pasture production and management on LUC Class 6 land provides a great opportunity in sustain the productivity of our hill country • Alternatives land uses such as forestry and manuka can provide increased returns from marginal pasture land.


1998 ◽  
Vol 46 (1) ◽  
pp. 109-122
Author(s):  
E.J. Bakker ◽  
H. Hengsdijk ◽  
K. Sissoko

Technical options in crop and animal husbandry to reduce soil nutrient mining and other forms of natural resource degradation in the Sudano-Sahelian zone should be economically attractive, if they are to be adopted. A model is presented in which agronomic and economic information and goals are combined to explore possibilities for agro-ecologically sustainable and economically viable land use in three different climatic regions in Mali and for a situation of non-degraded soils. The time frame of the study is to the year 2010. For each region, an agro-ecologically sustainable land use system (a combination of crop, livestock and pasture production systems) that maximizes income of the agricultural sector and satisfies self sufficiency targets is identified. Special attention is given to the use of chemical fertilizer in crop activities. It is shown that use of chemical fertilizer is an important element of sustainable and economically viable land use, especially in higher rainfall regions. Population size has a marked effect on optimal land use systems in the regions, but self sufficiency is not endangered even if the population is 50% higher than estimated for 2010. It is argued that results should not be used to simulate the actual situation or future developments, but to define priorities for agricultural development in the Sudano-Sahelian region.


Author(s):  
M.B. O'Connor ◽  
C.E. Smart ◽  
S.F. Ledgard

A farmlet grazing trial at the Te Kuiti Research Area (20 km south of Te Kuiti) began in April 1983 to study the effects on production of reducing or withholding fertiliser over a 6-year period. The effects of withholding fertiliser are considered in this paper. The soils on which the trial was conducted are Mahoenui or Mangatea silt loams typical of 1.3 million ha of North Island hill country. Applications of 250 kg/ha/annum of superphosphate had been applied for 10 years before the trial began, leading to Olsen P tests of 14. In spite of moderate soil test levels, declines in both animal and pasture production where fertiliser was withheld were evident from year 2. By years 3-4 onwards, production declines of some 20-30% were evident. Effects on pasture composition where fertiliser was withheld were evident, with less white clover and more moss and weeds. No noticeable increase in scrub weeds or brush weeds occurred. Maintaining a high stocking rate (or stock pressure) was considered a dominant factor in this regard. Keywords grazing trial, fertiliser, hill country, phosphate, animal production, pasture production


Author(s):  
M.B. O'Connor ◽  
M.H. Gray

Soil fertility has a dominant influence on the productivity of many hill country pastures. In the Gisborne-East Coast hill country the dominant soil groups - the yellow-brown earths (YBEs) from mudstone/argillite and the yellow-brown pumice soils (YBPs) from Taupo pumice tephra - show variations in response to fertiliser inputs. Results from a series of eight field trials, commenced in 1980, indicate widespread phosphorus (P) deficiency across both groups with optimum Olsen P soil test values being calculated as 11.5 and 20.1 respectively. Sulphur deficiencies appear less important, in the short term, than previously thought. Lime (L) and molybdenum (MO) deficiencies appear widespread on YEEs with an indication on some sites that lime effects are over and above that due to increased MO availability. Potassium (KI is the dominant deficiency (after P) on YBPs. Element deficiencies in decreasing order of importance were - Y BEs, P > L/MO > S > K; Y BPS, P > K > S > L. Keywords: Fertilisers, hill country, pasture production.


Author(s):  
R.W. Brougham

IN an assessment such as this, one could cover a wide range of topics fairly shallowly or a lesser number in a bit more depth. I have opted for the latter. The topics discussed will embrace some trends in dairying, beef farming, sheep farming, hill country farming, and land use generally, species and variety usage in grassland farming, use of crude protein produced from pasture, and some implications of energy usage.


2020 ◽  
Vol 12 (5) ◽  
pp. 1835
Author(s):  
Anja Schmitz ◽  
Bettina Tonn ◽  
Ann-Kathrin Schöppner ◽  
Johannes Isselstein

Engaging farmers as citizen scientists may be a cost-efficient way to answering applied research questions aimed at more sustainable land use. We used a citizen science approach with German horse farmers with a dual goal. Firstly, we tested the practicability of this approach for answering ‘real-life’ questions in variable agricultural land-use systems. Secondly, we were interested in the knowledge it can provide about locomotion of horses on pasture and the management factors influencing this behaviour. Out of 165 volunteers, we selected 40 participants to record locomotion of two horses on pasture and provide information on their horse husbandry and pasture management. We obtained complete records for three recording days per horse from 28 participants, resulting in a dataset on more individual horses than any other Global Positioning System study published in the last 30 years. Time spent walking was greatest for horses kept in box-stall stables, and walking distance decreased with increasing grazing time. This suggests that restrictions in pasture access may increase stress on grass swards through running and trampling, severely challenging sustainable pasture management. Our study, involving simple technology, clear instructions and rigorous quality assessment, demonstrates the potential of citizen science actively involving land managers in agricultural research.


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