Volume 3 Issue 1
Relative performance of complex and straight chemical fertilizer in
conjunction with and without organic manure in Potato-Jute crops
sequence
Author(s): BIJOY KUMAR MAHAPATRA, S. MAITI AND MANORANJAN SATPATHI
Abstract: Field experiments were carried out during 1999-2002 in Entisol soil of nearly neutral reaction (pH 6.8), sandy clay
loam in texture, of the instructional Farm of the Bidhan Chandra Krrishi Viswavidyala, West Bengal, India to
evaluate the relative performance of two complex fertilizers and one straight nitrogenous fertilizer in conjunction
with and without farm yard manure under potato jute crop sequential cropping system. Seven manurial treatments
were applied to potato crop and two fertilizer doses given to jute crop in sequence. Altogether 14 treatment
combinations replicated thrice in split plot design. Seven manurial treatments given to potato crop were in main
plot and two fertilizer doses given to jute crop were in subplot. Except control treatment, all treatments of Potato
crop received 150 kgN, 100 kg P2O5 and 100 kg K2O ha-1. Experiment was started with potato crop during 1999-
2000. In potato-jute sequential cropping maximum yield of potato tuber (24.96 t ha-1) and jute crop (4.63 tha-1) was
recorded where potato crop received IFFCO NPK (10:26:26) along with 25% N as farm yard manure and jute crop
was fertilized with 40 kg N, 20 kg P2O5 and 20 kg K2O ha-1. Both the crops in sequence when fertilized with same
manual treatment earned maximum net return (Rs 48,578.00 per year) and return per rupee investment (Rs. 2.21). In
addition to that total uptake of nitrogen, phosphorus and potassium by jute and potato crops in sequence per annum
was also maximum (390.3 kg ha-1 year-1) under the same treatment conditions. Addition of farm yard manure in
conjunction with complex (IFFCO NPK) mineral fertilizer tested in improvement of nitrogen (10.5%), phosphorus
(6.4%) and potassium (4.3%) status of soil over the initial value after fifth crop in the cropping sequence.
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