Results 61 to 70 of about 63,448 (193)

Winter Wheat Nitrogen Content Prediction and Transferability of Models Based on UAV Image Features

open access: yesAgriculture
Accurate and timely monitoring of plant nitrogen content (PNC) is essential for precision agriculture (PA) and food security. While multispectral unmanned aerial vehicle (UAV) imagery has shown promise in PNC estimation, the optimal feature combination ...
Jing Zhang   +11 more
doaj   +1 more source

INFLUENCE OF INTEGRATED USE OF POULTRY MANURE ALONG WITH MINERAL FERTILIZER ON SOIL PROPERTIES, GROWTH TRAITS, AND WHEAT YIELD

open access: yesPakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences
Soil quality and health, in the environment of agrarian ecosystems, pose significant enterprises due to environmental decline and overreliance on chemical inputs.
N. K. Katyar   +4 more
doaj   +2 more sources

Effects of sewage sludge application on the yield of different crops and the uptake of some heavy metals

open access: yesAgricultural and Food Science, 1981
An account is given of two pot experiments with sewage sludge. H/73. Sewage sludge was added in amounts of 0, 50 and 200 g of dry matter per pot of 5 litres =0, 20 and 80 tons per hectare respectively, given at the start of the experiment.
Asbjørn Sorteberg
doaj  

Soils & Fertilizers for Master Gardeners: Glossary of Soil and Fertilizer Terms

open access: yesEDIS, 2009
Revised! SL277, a 4-page illustrated fact sheet by Shawna Loper and Amy L. Shober, contains the definitions of important soil and fertilizer terms used throughout the Soils and Fertilizers for Master Gardeners EDIS series. Published by the UF Department of Soil and Water Science, January 2009.
Shawna Loper, Amy L. Shober
openaire   +3 more sources

Fertile Soil for Structural Funds? [PDF]

open access: yes, 2002
Structural funds are the most intensively used policy instrument by the EuropeanUnion to promote economic growth in its member states and to speed up the process ofconvergence. This paper empirically explores the effectiveness of European Structural Fundsby means of a panel data analysis for 13 countries in the European Union.
Sjef Ederveen   +2 more
openaire   +3 more sources

Effects of some heavy metals on oats in pot experiments with three different soil types

open access: yesAgricultural and Food Science, 1978
An account is given of two pot experiments, of which one has included all combinations of 5 heavy metals (cadmium, cobalt, lead, mercury and nickel), 3 rates of each metal, 2 rates of lime, and 3 types of soil (clay soil, peat soil and sandy soil).
Asbjørn Sorteberg
doaj  

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