ROLE OF ORGANIC WASTES ON ABSORBTION OF N,P,K AND THE GROWTH AND YIELD OF SUNFLOWERS ON SOIL IRRIGATED WITH SALINE WATER
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2010, Volume 8, Issue 4, Pages 91-102
AbstractTo study the effect of some organic wastes and method of its application on absorption of NPK and growth and yield of sunflowers that was irrigated by salty water. A field experiment was conducted in clay-loam soil for the spring season 2007 with Randomized complete block design in a factorial experiment to study two main factors, first was the some organic sources of wastes which were sheep wastes A , wastes of poultry B , wheat hay C as well as a treatment no addition A0. the second factor was the way of their addition which were direct application to soils indirect application by passing drainage water through wastes W. the plots were irrigated with drainage water with a salt average of 4.15dS.m-1 by surface irrigation. Upon fall maturity, plant were harvested after measuring their length, diameter of flowers vegetative dry weight and the total yield in M.g.h-1 and the uptake of NPK in plants; results showed the following:
The addition of the various organic wastes significantly increased N,P, and K absorbed by plants; poultry wastes gave a significantly increase for absorbed Nitrogen 8.0 g.plant-1, The sheep wastes gave the highest phosphorus and potassium absorption 10.84 and 6.22 g.plant-1 respectively. The direct addition S increased N, P, and K absorption and this increased was significant for the absorbed N: 7.17, 0.77, 5.56 g.plant-1 respectively. The addition of different organic wastes showed significant effect in the average of plant length, diameter and the total yield poultry wastes were superior for all mentioned characters 129.17 cm, 27.97 cm, and 7.65 M.g.h-1 respectively. The indirect addition W was significantly superior increasing the average of flower diameter 25.67 cm and the total yield 7.25 M.g.h-1. that results we conclude that addition of different sources of organic wastes increased absorption N,P,K.
From these results we conclude that addition of different sources of organic wastes in creased N, P and K absorbed by plants averages of plant height, flower diameter and the total yield. The indirect addition of wastes is better than direct addition, so recommend to use organic wastes at the indirect addition to reduce the effects of salty water which is use for irrigation.
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