241. Winter crop variety experiments 2000.

• Authors:
  • Powell, C.
• Source: New South Wales Department of Agriculture
• Year: 2001
• Summary: Variety trials conducted in New South Wales, Australia in 2000 are reported for winter crops of barley, canola [rape], chickpeas, faba beans, field peas, lentils, lupins ( Lupinus albus and L. angustifolius), mixed cereals, oats, triticale and wheat.

242. Farm Budget Handbook, Northern NSW - Winter Crops 2001.

• Authors:
  • Scott, F.
• Source: Farm Budget Handbook, Northern NSW - Winter Crops 2001
• Year: 2001
• Summary: This handbook presents gross margin budgets for annual winter crops and pasture establishment to assist landholders in northern New South Wales, Australia, plan for the 2001 winter cropping season.

243. A plant community method of controlling the level of weeds in young crops and soils with the use of rape as an intermediate crop (using an example of the forest steppe zone of Chelyabinskaya Oblast').

• Authors:
  • Zybalov, V.
• Source: Mezhdunarodnyi Sel'skokhozyaistvennyi Zhurnal
• Issue: 5
• Year: 2001
• Summary: Field trials were carried out at 2 sites in Russia to assess the effectiveness of rape as a weed-removing crop in different rotations. Rotations were fallow-wheat-barley-maize-wheat, and vetch-oat mixture and rape-wheat-barley-maize-wheat, with a control involving pure fallow. The degree of weediness (number of weeds/m 2) and species composition of weeds in young crops of wheat and barley was assessed twice (at tillering stage and before harvest). Before harvesting, weed mass was also assessed and the numbers of weed seeds in soil samples were determined. The substitution of rape crops for fallow in rotations resulted in significant reductions in weed numbers and weed seeds in soil. It is concluded that rape is effective in reducing levels of weeds in young crops and soils, even when minimal or no soil preparation is carried out.

244. P and K fertilizer; yield performance and development of soil nutrient content as influenced by differentiated P and K inputs in a long-term study over 20 years.; P + K-Dungung: Ertragsleistung und Entwicklung der Bodennahrstoffgehalte in Abhangigkeit differenzierter P + K-Dungung, in einem Dauerversuch uber 20 Jahre.

• Authors:
  • Roggenstein, V.
  • Fischbeck, G.
  • Dennert, J.
• Source: Getreide Magazin
• Issue: 3
• Year: 2001
• Summary: A study was initiated in 1980 in Germany on a soil with 4% humus and 18.2 mg P 20 5/100 g soil and 35.7 mg K 20/100 g soil. Crops included winter wheat, barley, rye, oats, rape, and maize. Annual soil analyses showed an unexpectedly large variation following inputs of up to 60 kg P/ha and 80 kg K/ha. The difference in P and K supply between fertilized and unfertilized plots was around 20%. However, the effect on yields was less than might have been expected. Non-application of P did not influence yield, while non-application of K resulted in 5% decrease (despite high K availability). No direct relationship was found between soil analysis and yields.

245. Farm Budget Handbook, Southern NSW - Irrigated Winter Crops 2001.

• Authors:
  • Faour, K.
• Source: Farm Budget Handbook, Southern NSW - Irrigated Winter Crops 2001
• Year: 2001
• Summary: This handbook presents gross margin budgets for irrigated winter crops and pasture establishment to assist landholders in the Murrumbidgee and Murray valleys (southern New South Wales, Australia) plan for the 2001 winter cropping season.

246. Pocket guide to varieties of cereals, oilseeds and pulses for Spring 2002.

• Authors:
  • UK, National Institute of Agricultural Botany
• Source: Pocket guide to varieties of cereals, oilseeds and pulses for Spring 2002
• Year: 2001
• Summary: This edition presents information on the spring sown varieties of wheat, barley, oats, oilseed rape, peas and beans. Individual information on each variety is given, including variety notes, yield performance, relative ranking position in different environments and a summary of the important character ratings from the Recommended Lists. General information is also given on minor spring sown oil crops.

247. Weed control in winter crops 2000.

• Authors:
  • Tonkin, C. J.
  • Dellow, J. J.
  • Mullen, C. L.
• Source: Weed control in winter crops 2000 Weed control in winter crops 2000.
• Year: 2000
• Summary: This guide provides information on chemical weed control in New South Wales, Australia, for the following winter crops: wheat; barley; oats; rye; triticale; canola [rape]; safflower; lentils; linseed; lupins; chickpeas; faba beans; field pea; and fallows.

248. Regional on farm experiments 1999: Albury, Cootamundra, Lockhart, Tumut & Wagga Wagga agronomy districts.

• Authors:
  • Powell, C.
• Source: New South Wales Department of Agriculture
• Year: 2000
• Summary: This report presents tabulated yield data from variety trials held in New South Wales, Australia, for barley, rape, faba beans, field peas, lentils, lupins, mixed cereals (barley, oats, triticale and wheat), oats, triticale, wheat.

249. Winter crop variety experiments 1999.

• Authors:
  • Powell, C.
• Source: New South Wales Department of Agriculture
• Year: 2000
• Summary: Tabulated data on yield are presented from variety trials conducted in New South Wales, Australia, during 1999 for barley, rape, chickpeas, faba beans, field peas, lentils, lupins, mixed cereal (barley, oats, rye, triticale and wheat), oats, triticale and wheat.

250. Potential crop growth assessment from remotely sensed images compared to ordinary yield maps.

• Authors:
  • Soderstrom, M.
  • Rydberg, A.
• Source: Proceedings of the 5th International Conference on Precision Agriculture, Bloomington, Minnesota, USA, 16-19 July, 2000
• Year: 2000
• Summary: This study investigates the potential of using SPOT multispectral images of agricultural fields to distinguish spatial variation in crop-growth patterns that can be used for site-specific agricultural management. Four years of SPOT data from 1995 to 1997 and 1999 are used in this study over south-western Sweden where satellite derived yield maps are compared to data from commercial yield mapping systems. The crops included rape, wheat, barley, meadow fescue [Festuca pratensis], oats, peas and rye. Our concept of crop growth maps is intended for use in areas where yield mapping, soil sampling and ground spectral measurements are not available. Maps of crop growth variability produced by clustering processes applied to images of the Normalized Difference Vegetation Index are compared to clustering of yield maps from the same years. Qualitative yield estimation is derived by dividing each field into several thematic classes, going from lowest to highest potential yield within a particular field. Qualitative comparisons are made within each field. For one year, the satellite data are also compared to three traditional yield maps derived from the same set of yield data. For a few fields where the time of image acquisition coincides with stages of optimum grain fill, high correlations were obtained between yield and NDVI. This study illustrates that satellite images can be a useful tool in precision agriculture management. The clusters created from the NDVI images show similar patterns as clusters created from the yield maps.