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This paper presents the results of a field study conducted in Spain, to evaluate the efficiency of installing artificial nest boxes for insectivorous ...
Read moreThe design of an instrument for the simultaneous measurement of photosynthetically active radiation and red, far-red and blue light is described. The ...
Read moreThe numbers of Sinapis arvensis plants in 3 permanent quadrats in an arable field were examined over 3 years. Plant size was positively correlated wit...
Read moreSexual reproduction and natural seed production in Eichhornia crassipes was examined in a total of 19 populations from 2 tropical regions (Lower Amazo...
Read moreSeed longevity and germination in various situations were examined in Rumex crispus and R. obtusifolius. The % germination of both spp. was significan...
Read moreAutomatically recording thermocouple sensing elements clipped to potato leaves and thermocouple needles inserted into the midrib of the leaf showed th...
Read moreA technique is described for measuring the time-course of uptake of 32P from soil. Carrier-free 32P was applied to the soil of potted Lolium perenne c...
Read moreDrylands are highly vulnerable to land degradation, and despite increasing efforts, restoration success remains low. Although often ignored in the des...
Read moreIn studies on the low-temp. growth of 13 ecotypes and of the cv. S184 of T. repens at 2 locations, one at 70 m and the other at 230 m alt. in NE Engla...
Read moreDaily stem diameter changes were recorded continuously from June to September on peach trees (cv. Springcrest on GF 305 rootstock) irrigated at 50 and...
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