Soil Science Commons^™

Soil Nitrate Level Variation Under Intensive Nitrogen Fertilized Coastcross Pasture, O. Primavesi, A. C. Primavesi, L. A. Corrêa, H. Cantarella, A. G. Silva

IGC Proceedings (1993-2023)

Nitrate levels in soil profile after the first N application on coastcross pasture, grown on a dark red latosol (Hapludox), in São Carlos, SP, Brazil, under tropical altitude climate, were measured at 7-day intervals, to monitor possible losses in depth. Soil nitrate rates varied with high rates of N-ammonium nitrate (200 kg ha^-1 per cutting) in surface layers. Danger of environmental impact was low in the studied conditions.

Soil Carbon And Nitrogen Dynamics After Pasture Installation In The Amazon Region, C. C. Cerri, M. Bernoux, C. E. P. Cerri

IGC Proceedings (1993-2023)

The objective of this paper is to present the soil carbon (C) and nitrogen (N) dynamics in a chronosequence made of a forest and pastures of different ages established in a Oxisol in the Western Brazilian Amazon Basin. The results of soil Carbon and Nitrogen stocks and gases fluxes were discussed. Stable ¹³C isotopic technique was used to calculate for a determinate age of pasture installation, the proportion of soil C remaining from the forest system and the proportion of soil C introduced by the grasses of the pasture system. The C lost from the original pool under the …

Pasture Seed Production Technology In Brazil, Ronaldo Pereira De Andrade

IGC Proceedings (1993-2023)

Efficient and low cost production systems, which rely on the use of cultivated pastures, are the basis of beef and milk production in Brazil. The success of these pasture-based systems would not be possible without the support of an aggressive and dynamic pasture seed production sector to supply the internal demand, which is estimated to be around 90000 tons per year. The market is dominated by grass species and among them, Brachiaria. brizantha cv. Marandu accounts for more than 80% of the total seed volume in the market. Seed production systems in Brazil vary from highly specialized to opportunistic accordingly …

Dry Matter Production Response Of Coastcross (Cynodon Dactylon (L.) Pears) To Sources And Rates Of Nitrogen, L. De A. Corrêa, H. Cantarella, A. C. Primavesi, O. Primavesi, A. R. Freitas, A. G. Da Silva, E. B. Pott

IGC Proceedings (1993-2023)

Dry matter production of a coastcross pasture grown on a dark red latosol (Hapludox), in São Carlos, São Paulo State, Brazil, under tropical altitude climate, was evaluated. The goal was to verify the efficiency of N rates as urea and ammonium nitrate: 0, 25, 50, 100 and 200 kg ha^-1 per cutting, in five periods. Both sources were equally efficient. The mean N rates, which produced 80% of maximum forage yield, were 78 and 58 kg N ha^-1, respectively, for urea and ammonium nitrate, and were related to dry matter yields of 2,769 and 3,347 kg ha …

Ammonia Losses By Volatilization From Coastcross Pasture Fertilized With Two Nitrogen Sources, H. Cantarella, L. De A. Corrêa, A. C. Primavesi, O. Primavesi, A. R. De Freitas, A. G. Da Silva

IGC Proceedings (1993-2023)

Ammonia losses by volatilization from five rates of urea or ammonium nitrate surfaceapplied to coastcross pasture, grown on a dark red latosol (Hapludox) in São Carlos, SP, Brazil, under tropical altitude climate, were measured. Volatilized ammonia was absorbed in traps placed on soil surface. The mean losses from urea applied after five successive cuttings of the grass were 15, 24, 34, and 40% for N rates of 25, 50, 100 and 200 kg N ha-1 per cutting, respectively.

Screening Brachiaria Introductions For Resistance To Spittlebugs (Homoptera: Cercopidae), José R. Valério, Cacilda Borges Do Valle, A. P. De Souza, M. C. M. Oliveira

IGC Proceedings (1993-2023)

Spittlebugs are the most evident and damaging pests of Signal grasses (Brachiaria) in tropical America. Damage caused by these insects can result in the complete loss of available forage, thereby reducing the carrying capacity of infested pastures. Host plant resistance is a low-cost method of controlling insects. High level of spittlebug resistance is found in the cultivar Marandu (B. brizantha), but it requires more fertile soils. Brachiaria germplasm provided by the International Center for Tropical Agriculture (CIAT) is available at National Beef Cattle Research Center of the Brazilian Agricultural Research Corporation (Embrapa Beef Cattle) and it …

Panicum Maximum Seeds From Sugarcane Plantations Improves Household Incomes In Uganda, P. Lusembo, C. Ebong

IGC Proceedings (1993-2023)

No abstract provided.

Companion Crops For Pasture Establishment In The State Of Minas Gerais, Brazil, I. F. Andrade, P. Schmidt

IGC Proceedings (1993-2023)

No abstract provided.

Simulating Options For Managing Seasonal And Annual Variations In Feed Supply Of Mixed Crop/Livestock Systems In Sub‐Tropical Australia, Lindsay W. Bell

IGC Proceedings (1993-2023)

No abstract provided.

Effect Of The Pasture On Milk Production From Cinisara Cows Over The Seasons, M. Alabiso, C. Giosuè, M. L. Alicata, V. Ilardi, D. Giambalvo, G. Maniaci

IGC Proceedings (1993-2023)

No abstract provided.

Effect Of The Pasture, In Different Seasons, And Of The Ripening Time On The Caciocavallo Palermitano Cheese, C. Giosuè, M. Alabiso, M. L. Alicata, V. Ilardi, D. Giambalvo, G. Maniaci

IGC Proceedings (1993-2023)

No abstract provided.

Non‐Co2 Greenhouse Gas Emissions Associated With Winter Management And Farm Effluent Application In Grazed Grassland Systems In New Zealand, Jiafa Luo, Surinder Saggar, Sterwart F. Ledgard

IGC Proceedings (1993-2023)

No abstract provided.

Growth Characteristic, Productivity And Nutritive Value Of Forages By Reseeding Methods In Forest Fire Burnt Pasture, J. K. Lee, S. H. Yoon, Y. C. Lim, H. C. Ji, B. S. Jeon, K. Y. Kim, K. J. Choi, H. S. Park, S. Seo

IGC Proceedings (1993-2023)

No abstract provided.

Application Of Nuclear Techniques In Improving Pasture/Range Management, Majid Ajorlo, Ramdzani B. Abdullah

IGC Proceedings (1993-2023)

No abstract provided.

Using Microhistological Techiques To Predict Botanical Composition Of Horse Diets On Cool‐Season Grass Pasture, Jesse Ira Morrison, S. Ray Smith, Glen E. Aiken

IGC Proceedings (1993-2023)

No abstract provided.

Measurement At Pasture Of Intake, Digestibility And Chemical Composition Of The Diet Of Nursing Ewes, Using Faecal Nirs, Maryline Boval, A. Fanchone, E. Ortega‐Jimenez, G. Alexandre

IGC Proceedings (1993-2023)

No abstract provided.

Response Of An Improved Pasture To Different Phosphoric Fertilisation Strategies In Basaltic Soils, D. F. Risso, R. Cuadro, A. Morón

IGC Proceedings (1993-2023)

No abstract provided.

Fertilisation Strategies For Sown Organic Pasture In The Mediterranean Mountains Of Northeast Portugal, J. M. Pires, M. Rodrigues, M. Arrobas, J. Pires, N. Moreira

IGC Proceedings (1993-2023)

No abstract provided.

Physical Soil Quality In The Main Areas Of Pastures In Dairy Production In Uruguay, A. Morón, J. Molfino, Jorge Sawchik, A. Califra, E. Lazbal, A. La Manna, E. Malcuori

IGC Proceedings (1993-2023)

No abstract provided.

Response Of Natural And Cultivated Hay Meadows To Fertilizer Applied By Small Scale Livestock Farmers In The Mountainous Sandzak Region Of Serbia, Ian R. Lane, M. V. Stosic, G. Topisirovic, S. Reynolds

IGC Proceedings (1993-2023)

No abstract provided.

Correction Of Sulphur Deficiency On Naturalized Pastures Of Western Patagonia (Chile), Christian Hepp

IGC Proceedings (1993-2023)

No abstract provided.

The Successional Dynamic Changing Process Of Vegetation Steppe From Central Asia And Mongolian Pasture, Erdenejav Guriin Proffessor

IGC Proceedings (1993-2023)

No abstract provided.

Methane Emission Estimated From Different Cattle Intake Data In Heifers Grazing A Tropical Pasture, José Augusto Imaz, O. Hernández, D. Dos Santos, A. Radrizzani, J. I. Arroquy

IGC Proceedings (1993-2023)

The quantification of methane (CH₄) from enteric fermentation related to cattle diet is a useful tool to identify strategies to mitigate greenhouse gas emissions. This is even important in tropical and subtropical regions due to the lack of CH₄ estimations in beef cattle, particularly from Bos Indicus breeds grazing tropical grasses (Kurihara et al., 1999). Several modelling approaches have been developed in order to predict CH₄ emission. However, the use of these models has limitations associated with uncertainty information required such as feed intake (FI), composition of the selected diet and animal responses (Gonzalez et …

Feasibility Of Buffalo Rearing On Pasture In Tropical Climate Of Andaman And Nicobar Islands, M. S. Kundu, A. Kundu, S. Dam Roy

IGC Proceedings (1993-2023)

The Andaman and Nicobar group of Islands form the Southern most tip of the Indian subcontinent, located (6-14° N latitude and 92-94°E longitude) in the South Eastern part of the Bay of Bengal .There are 572 Islands of which only 37 are currently inhabited. The Islands are beautiful and unique. The indigenous plants, animals, livestock, and marine life contribute to uniqueness of these Islands. The total livestock population has increased to many fold from meager 38.6 thousand in 1961 to 154.75 thousand in 2012. The buffalo constitute 5.08 per cent of the livestock of Andaman and Nicobar Islands. The buffaloes …

Pasture Establishment And Sustainability In Arid Region Of Rajasthan, India: Prospects And Constraints, Surendra Singh Shekhawat, S. M. Kumawat, S. L. Godara

IGC Proceedings (1993-2023)

Rajasthan is the largest state of India and covers nearly 10.4 per cent (342.65 lakh ha) of total geographical area of the country. About 65 per cent of its population is dependent on agriculture. According to livestock census-2007, Rajasthan ranks at the third place (56.663 million) in the country for total livestock population after Uttar Pradesh (60.272 million) and Andhra Pradesh (60.175 million). The large livestock population of the state shows importance of fodder in the state. Western part of Rajasthan state covers the area of the state towards western side of Aravali range of hills, which divides the state …

Policy Measures For Extensive Farming Systems In Southwest Norway, Lief Jarle Asheim, Pål Thorvaldsen, Odd J. Øvreås

IGC Proceedings (1993-2023)

The open landscapes produced over centuries by farming in southwest Norway are threatened by agricultural abandonment, raising public concern for maintenance of the species rich and valuable coastal grasslands. A study in two municipalities revealed that semi-natural grasslands, traditionally grazed in spring and fall and mowed in-between, are most affected. Two linear programming models, one for part time sheep farms and one for larger mixed dairy and meat farms, were developed to study measures for stimulating production, in particular effects on grazing and land utilization of altering support between leys, farm pasture, and grazing animals. Yields and fertilization level in …

Endozoochorus Seed Dispersal By Jalauni Sheep In Tropical Climate: Recovery And Germinability Under Natural Pasture Grazing, Nityanada Das, S. B. Maity

IGC Proceedings (1993-2023)

Herbivores can play an important role in seed dispersal. Climate, available vegetation for grazing, pasture situation can determine the seed dispersal trends by the grazing animals. Tropical climate of India with wide climatic variation leads to fluctuating herbage quality and available biomass. Ruminants spread plants through fecal pellets after grazing at one place and fecal voiding at another. Herbivores can play an important role in seed dispersal. Climate, available vegetation for grazing, pasture situation can determine the seed dispersal trends by the grazing animals. Tropical climate of India with wide climatic variation leads to fluctuating herbage quality and available biomass. …

Animal Behaviour And Pasture Depletion In A Pasture-Based Automatic Milking System, Nicolas A. Lyons, Kendra L. Kerrisk, Sergio C. Garcia

IGC Proceedings (1993-2023)

In an automatic milking system (AMS) feed is used as an incentive to encourage voluntary and distributed cow traffic to the milking unit (Prescott et al. 1998). Therefore the timing, placement and size of feed allocations need to be managed in order to achieve targeted milking events per day.

Behavioural studies allow the construction of time budgets (Gibb et al. 1998), and aid understanding of how cows modify their behaviour under different management regimes (Johansson et al. 1999). To date there are no published reports on how different location of feed incentives affect cows’ behaviour upon arrival at …

The Effect Of Planting Date On The Dry Matter Production Of Italian And Westerwolds Ryegrass In The Southern Cape Of South Africa, Philip R. Botha, Janke Van Der Colf, Lethukuthula B. Zulu, Pieter A. Swanepoel

IGC Proceedings (1993-2023)

Perennial pasture species such as lucerne (Medicago sativa), kikuyu (Pennisetum clandestinum), perennial ryegrass (Lolium perenne) and perennial clovers (Trifolium spp.) make an important contribution to the fodder flow programmes for dairy production in the southern Cape. One of the main challenges when these species make up the primary pasture base within a pasture system is the mutually low growth rates during winter (Van Heerden et al., 1989; Swanepoel et al., 2014). In order to bridge pasture shortages during the critical winter months, producers establish annual Italian (Lolium multiflorum var. italicum …

Production And Quality Assessment Of Pasture Crop In Red Lateritic Wasteland Of Central Chhattisgarh, Mahendra Nath Naugraiya, G. S. Tomar

IGC Proceedings (1993-2023)

The livestock constitutes a very important component in rural economy, as in agriculture. Our country largely depends on livestock for manure and power. The availability of fodder is short from the requirement and an estimate of several agencies, there is more than 300 per cent gap between availability and requirement (Anon, 1980). Most of the livestock depend either partially or completely on natural and developed pastoral system, but the existing practices of utilization of range lands, grasslands and forest areas natural resources and increasing land degradation. In the improved pastoral system in wastelands, the carrying capacity of grass-legumes pastoral field …