| dc.description.abstract | Abstract :
Imbalanced use of chemical fertilizers without replenishment of organic matter
has lead to deterioration of soil health and fertility. This study was done to
quantify the effects of household waste (HW), poultry manure (PM) and cow
dung (CD) on tomato yield, potential supplies and use efficiencies of nutrients
and improvement of soil fertility using 11 treatments in a randomized complete
block design with three replications. Except the control and recommended
fertilizers (RD), remaining nine treatments were composed of HW. PM and CD
where each of the wastes was applied at the rates of 2,0, 3.0 and 4.0 kg m"2. In
waste treated plots nutrients were supplemented by inorganic fertilizers to make
amount of nutrients equal to RD treatment. The treatments containing HW, PM
and CD produced significantly higher yield of tomato over the RD treatment.
Application of HW 4 kg and CD 3 kg m'2 produced the maximum 22 t tomato
ha'1. Different levels of wastes significantly increased carbon and nutrients in
soils and the potential supplies of N, P and K were high enough, which indicated
the fertility enhancement of soil. The nutrient use efficiencies were within the
normal range and higher in some cases. The recovery efficiencies of N, P and K
were found significantly different among treatments where N ranged from 25 to
47, P 10 to 21 and K 28 to 96%. Internal use efficiency of N ranged from 37 to
41, P 361 'to 390 and K. 45 to 49 kg oven dry tomato kg:1 nutrient uptake. | en_US |
