Download Agricultural Field Experiments by Roger G. Petersen PDF

By Roger G. Petersen

This article offers statistical and biometrical strategies for designing, undertaking, studying and studying box experiments. It addresses an important learn themes in agriculture, together with agronomy, breeding and pasture trials; farming structures study; and intercropping learn.

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The recordings were done by inserting little rings or coloured pins next to each individual. e. not introduced seedlings were recorded in five replicate plots (10 x 10) cm 2 at each site and in some cases sods of the same area were investigated closely in the laboratory (ct. Linkola,1930). PART TWO Land use dynamics CHAPTER III The Drenthe Plateau A. Introduction .................................. B. Land use of the Drenthe plateau ................ 1. Geomorphological and hydrological conditions 2.

Therefore, the village is often older than the 'es' since the former found its definite location in the ninth century (Waterbolk, 1982). A number of fieldnames or toponymes refer to the characteristic features of the 'esdorpen' landscape. The meaning of the toponyme 'woert' is troublesome. It might be associated with the allotments of the original farms (Waterbolk, 1973A) or an arable field enclosed with a wooded bank (Wieringa, 1979). Glasser (1976) suggested that they even might represent the oldest, irregular arable fields from the period before the medieval establishment of regular formed lots.

65 from November to February (Penman, 1948). The average rainfall surplus over the study period and its standard deviation were calculated in order to recognize dryer or wetter than average (half)years (Both & Van Wirdum, 1981). D. I. Terrain-use or occupancy Direct observations of animal presence and behaviour were carried out every ten minutes in ten plots (25 x 25) m2 laid down systematically in each of four plant communities in the salt marsh study area. The plots were marked with plastic sticks to enable direct observation from a watch-tower.

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