Abstract:
Field experiments were carried out to examine the effect of increasing the crop yield on soil
fertility in cassava-based cropping systems. The experiment was also aimed at showing that with
proper soil fertility, soil enhancer the planting of cassava cropping system The experiment was
done in a farmer's fields in Batu, about 15 km south east of Malang, East Java, Indonesia. The
soils are Alfisols with a surface slope of about 8%. There were 8 experimental treatments with
two replications. Experimental results showed biochar application can be improve soil physical
and chemical properties in cultivation of intercropping of cassava and maize. At the beginning of
the application showed different uptake, higher uptake in corn, also observed that nutrient uptake
of cassava is lower than maize. In high yield, only K uptake from cassava is higher than corn,
while N and P uptake is more or less the same. Plant management can be a symbiotic mutualism
between cassava and maize. However, this only happens when there is appropriate crop
management. Plant management, such as biochar applications, can significantly improve soil
properties, both physical properties and soil chemical properties, even root uptake. The results
of this study reveal that proper management can be increase the soil organic C, the weight of soil
content and the aggregate stability of the soil. In addition, the role of soil fertility improvements,
increased nutrient uptake of N, P, K, Ca, Mg and cation exchange capacity. |
