M.R. Islam
Department of Soil Science, Bangladesh Agricultural University Mymensingh-2202, Bangladesh.
M.M. Rahman
Department of Soil Science, Bangladesh Agricultural University Mymensingh-2202, Bangladesh.
A. Huda
Department of Soil Science, Sylhet Agricultural University, Sylhet-3100, Bangladesh.
H. Afroz
Department of Soil Science, Bangladesh Agricultural University Mymensingh-2202, Bangladesh.
S. Bilkis
Department of Soil Science, Bangladesh Agricultural University Mymensingh-2202, Bangladesh.
M. A. Matin
Department of Soil Science, Bangladesh Agricultural University Mymensingh-2202, Bangladesh.
Fertilizer, Compost, Tillage, Infiltration, Wheat and yield.
Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh
Crop-Soil-Water Management
Water management
The experiment was carried out at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during the winter (Rabi) season of 2012-2013. The study was performed to evaluate the integrated application of fertilizer and compost on water transmission behavior and yield of wheat under the different tillage systems. The soil of the experimental site belongs to the Sonatala series under the AEZ of Old Brahmaputra Flood plain. The soil was silty loam in texture having particle density 2.55 g/cm3 and it was medium high land, fairly level topography and moderately well drained. The experiment was laid out in a split-plot design with three replications. There were two sets of experimental treatments viz. (i) three tillage treatments arranged as main plot and (ii) fertilizer and compost treatments were allocated into the two sub-plots. The main plot treatments include T1 = 1 passing of a power tiller, T2 = 2 passing of a power tiller and T3 = 3 passing of a power tiller and sub plot treatments include F = Recommended dose of fertilizers at 100kg N, 18kg P, 50kg K, 20kg S, 3kg Zn and 1kg B ha-1 and FC = 70% of N + Compost at 6 t ha-1. The sources and nutrient content of N, P, K, S, Zn and B were urea (46%N), TSP (20%P), MoP (50%K), Zypsum (18%S), Zinc oxide (78%Zn) and Boric acid (17%B) respectively. The compost contains of 2.9%N, 0.05%P, 1.55%K, 0.165%S and 58 ppm Zn. Thus, the numbers of plots were eighteen and the size of unit plot was 4 m × 2.5 having spacing of plot to plot 0.5 m and block to block 1.0 m.The recommended high yielding wheat variety, Shatabdi was used as a test crop. The total amount of compost, TSP, MoP, gypsum, zinc oxide and boric acid was applied during final land preparation and urea was applied in three equal splits. The first split was applied during final land preparation, the second split at heading growth stage (30 days) and the third split at panicle initiation growth stage (55 days). Compost was applied in the plot and mixed with the soil by spade before sowing of wheat seed. Seeds of wheat were sown on 29 November, 2012 at 120 kg ha-1 in lines and covered with soil by hand. The line to line distance was 20 cm and the depth of furrow was about 6 cm. A strip of wheat crop was established around the experimental field as border crop. Different intercultural operations such as irrigation, weeding, pest control etc. were done as and when required. The crop was harvested on 24 March, 2013 at full maturity and the data on plant height, number of tillers plant-1, spike length, number of spikelets spike-1, and number of grain spike-1 and weight of 1000 grains. The grain and straw yields were recorded and expressed as t ha-1 and 1000 grains in g on 14% moisture basis. All the data were statistically analyzed by F-test and the mean differences were adjudged by Duncan’s Multiple Range Test (DMRT). Infiltration Rate and Cumulative Infiltration: Generally the infiltration rate is the velocity or speed at which water enters into the soil. It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour. The infiltration of soil water in the field was determined with the help of double ring infiltrometer method. The cumulative infiltration was calculated and plotted on a log-log paper against the time interval to find the intercept “a” and slope “b” of the most widely used infiltration equation given by Kostiakov (1932) IC = at b ……. (1)
Where, IC =cumulative infiltration, t = cumulative time, a = intercept, b=slope and d(Ic)/d(t) = abt b-1 = the rate of infiltration.
After computing all necessary parameters the data on the rate of infiltration were then plotted on an ordinary graph paper to get the infiltration rate curve accordingly. Mean and standard deviation values were calculated and used for the infiltration curves.
International Journal of Agricultural Policy and Research Vol.3 (7), pp. 287-292, July 2015
(ISSN 2350-1561)
Journal