The analysis of fertilization system in blueberry plantation | Ražojoša krūmmelleņu stādījuma mēslošanas sistēmas analīze
2013
Apse, J., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Karklins, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture
Popularity of highbush blueberry cultivation and area of commercial plantations in Latvia is growing. Many aspects of cultivation, including fertiliser use, are topical. Analysis of literature data shows that among the other factors, nitrogen supply may play an important role for blueberry growth, development, yield formation, winter hardness etc. Besides information coming from different specialised experiments, farmers’ experience is also important. Therefore the aim of this study was to analyse the fertilisation scheme used by a farmer who owns a well-organized and established highbush blueberry commercial (3 ha) plantation since 2004. Farm „Bīsnes” is located in Ogre district. The plantation is established on Haplic Cambisol, loamy sand, formed on moraine deposits. The initial soil reaction was pH KCl 5.37, the organic matter content was 2.5%. During the establishment of plantation, the soil modification (deep ploughing, acid peat moss addition) was done, therefore soil properties were changed. In 2011 the soil and plant analysis was performed to identify the nutrient status of blueberries and to compare it with the fertiliser supply which was typically used on this farm annually. The obtained results were compared with the data from different publications – Latvian, as well as from other countries. Besides fact, that there were no symptoms of nutrient deficiency observed, NPK level in leaves and new shoots was lower as recommended by other authors. Also application of nitrogen and phosphorous fertilizers was not as high as recommended. This gives the idea to organize the field experiments with increasing nutrient (predominantly nitrogen) rates for the establishment criteria for fertilisation planning and plant nutrition diagnosis.
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