THE EFFECT OF TILLAGE SYSTEM AND HERBICIDE ON LOSSES OF NUTRIENT AND ORGANIC MATTERS DUE TO EROSION IN LABORATORY OF LAPANG TERPADU FACULTY OF AGRICULTURE UNIVERSITY OF LAMPUNG

Authors

  • Burhannudin Burhannudin

Abstract

Land degradation is a serious problemwhich can reduce the land fertility and productivity. Themain cause of the
degradation is due to erosion phenomenon. It causes the fertile top soil losses which is good for plant growth.
Tillage farming is particularly convinced as the prime cause on soil erosion. This research aims to determining
the effect of tillage systemand herbicide to predict the losses of nutrients and organicmatter due to erosion. This
experiment was conducted at the Laboratory of Lapang Terpadu and Laboratory of Soil Science, Faculty of
Agriculture, University ofLampung inMay toAugust 2014. The experimentwas design as a factorial in completely
randomized block design (RCBD) consisting of two factors, namely the tillage systemand herbicidewith 4 (four)
repetitions. The results showed that the treatment of soil tillage, herbicides, and the combination of themdid not
significantly affect the concentration ofN (total), K (exchangable), Ca (exchangable),Mg (exchangable), and the
C (organic)matter in sediment.While theP (available), only the tillage systems that provided significant effect. At
a minimum tillage system P (available) concentration was significantly higher than the conventional tillage
system. This was due to the nature of the immobil phosphorus, itmean the phosphorus in the soil remains in the
top soil otherwisemechanically inserted into the sub soil. The limited tillage onminimumtillage systems causes
phosphorus remain inthe top soil, so thatwhen erosion occurs phosphorus losses inminimumtillage system will
be higher thanin conventional tillage. The conventional tillage systemcauses loss of P (available) of 0,016 kg/ha
and the minimumtillage systemcauses loss of P (available) of 0,01 kg/ha.

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Published

2015-01-30

Issue

Vol. 3 No. 3 (2014)

Section

Articles

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