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... The ratio of N (urea): P (phosphate): K (leucite): Mg (kieserite) is 25 : 7 : 12 : 3 and the required micro-organism and organic materials is 10% of the amount ameliorant per application [14]. The used microbe is in the liquid form while the organic material is the mixture of the liquid and the solids [15]. Kieserite, phosphate, and leucite are prepared by crushing such the materials using a jaw crusher and followed by grinding them in a ball mill. ...
The research objective was to make a formula for economical complex soil conditioner of bio-organo mineral for tea, coffee and cacao plantations. The soil conditioner (SC) formula for such plantations was made by mixing the urea, phosphate, leucite and kieserite with the ratio of 25:7:12:3. The experiments at Block B5 showed the amount of harvested dormant leaves was 3.37 kg/100 m ² while the control yielded 2.29 kg/100 m ² . There is a difference around 1.08 kg/100 m ² or 47%. The amount of Peko shoots was 19.82 g/100 m ² when using the soil conditioner while the control had 14.89 g/100 m ² performing the difference 33% while at Block A10, the amount of harvested dormant shoot was 3.53 kg/100 m ² . There is a difference around 3.29 kg/100m ² or 7%. The amount of Peko shoot was 18.25 g/100 m ² while the control acquiesced 15,05 g/100m ² – the difference of both was 21%. The Robusta grew from 25.4 cm to 28.5 cm when using the BIOM-SC. but the plant height is only from 24.4 cm to 26.8 when using NPK fertilizer.
A bokashi biofertilizer using phosphate rock at 10% and without its use was developed and assessed during the elaboration process. Once the process finished, the products were analized using a compost analysis methodology. The collected data was put under an analysis of variance (t Student-Fischer test), determining that the application of phosphate rock increased the soluble phosphorus content by 17,7% and calcium levels were doubled. It also was determined that that the finished bokashi has higher ammonium nitrogen levels than a mature compost. The effect of the application of bokashi was evaluated in a Moss Curled variety of curly parsley crop grown in flower pots, which were carried out ten treatments with five repetitions. The soil used was Chacayal series soil. The treatments considered a control without using bokashi, and three different doses of the biofertilizers: 10, 15 and 30%. For each dose there were used three different phosphorus fertilization sources: bokashi without phosphate rock; bokashi made with 10% phosphate rock; and bokashi without phosphate rock plus the addition of 10% phosphate rock in relationship to the added bokashi in the flower pot at the substrate making moment. Chlorophyll index, dry matter weight, leaf phosphorus content and available soil phosphorus content after harvesting were evaluated. The data obtained was put under anylisis of variance with Tukey mean difference. It showed that highest doses of the organic amendment responded positively to these parameters, excepting dry matter weight, that had similar behavior in every treatment that was fertilized. The parameter that responded better was the remaining soil phosphorus content. There were no differences between the available phosphorus that was added by the different biofertilizer mixtures.
Key words: bokashi, phosphate rock, biofertilizer, organic amendment, parsley, phosphorus.
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